Sub 12s: 12S subwoofer for high performance

12S subwoofer for high performance

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12S subwoofer

Subwoofers

Installation specific compact subwoofer

• Components 12″
• Dispersion Omni directional
• SPLmax 127 dB
• Weight 16 kg / 35 lb

Article number Z1630

Where to buy

Overview

Overview

Product description

The 12S-SUB is a compact high performance subwoofer for use with the xS-Series loudspeakers. The cabinet houses a long excursion 12” neodymium driver in a bass-reflex design and it can be used stand-alone, stacked or individually flown. The enclosure is constructed from marine plywood with an impact resistant black or white paint finish and is Ball Impact Resistant according to DIN 18032-3 for schools and sports halls. The front of the loudspeaker cabinet is protected by a rigid metal grill backed by an acoustically transparent foam. Incorporated into the side panels are a pair of M10 threaded inserts and into the rear panel are two NL4 connectors as well as a two pole screw terminal block. The loudspeaker cabinets and most accessories are also available with the Special Colour (SC) option that can be executed in all RAL colours, whilst the Weather Resistant (WR) option provides an IP55 rating, and enables operation of loudspeakers in changing ambient conditions.

Amplifiers

The following amplifiers can be used to drive the 12S-SUB.

Mobile

Installation

Technical data

Technical data

System data

Frequency response (-5 dB standard)

45 – 130 Hz

Frequency response (-5 dB 100 Hz mode)

45 – 100 Hz

Max. sound pressure¹

with 10D

with D20/5D/30D

with D40/D80/40D

124 dB

127 dB

127 dB

Cabinets per amplifier channel

2

Loudspeaker data

Configuration

Installation specific compact subwoofer

Nominal impedance

8 Ω

Power handling capacity (RMS/peak 10 ms)

300/1600 W

Components

12″ driver with neodymium magnet

Connections

2 x NL4

screw terminal block

Dimensions / weight

Dimensions (H x W x D)

354 x 530 x 448 mm

13. 9 x 20.9 x 17.6″

Weight

16 kg

35 lb

¹ 1 m, free field, SPL max peak, test signal: pink noise with crest factor 4, one speaker driven. For possible performance deviations when using multiple loudspeakers, check 5D Powershare Calculator tool.

Downloads

Downloads

Accessories

Accessories

Applications

Applications

Nightclubs and Bars

d&b performance only a touch away at iconic Greek restaurant.

Greek restaurant, bar and club Shark Bar in Thessaloniki upgrades with d&b and chooses the R90 touchscreen remote control to enable easy audio management of all areas of the venue as well as seamless changeover from restaurant to…

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Other applications

d&b serves electrifying audio for the Hard Rock hotel, restaurant & bar at Hyde Park London.

The d&b x-S-Series guarantees the ultimate Rock’n’Roll experience at the recently refurbished Hard Rock Hotel Hyde Park, London with an installation covering not only the stage area but the bar, restaurant, VIP lounges and bathrooms.

…

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Nightclubs and Bars

Bien Trucha Group serves up auditory ambrosia with d&b audiotechnik

For the Bien Trucha Group, Music plays a big role in offering the best dining and entertainment experience. After hearing d&b loudspeakers on an art cart at Burning Man festival, Rodrigo Cano, COO and partner for Bien Trucha Group, knew he…

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Live performance venues

3TEN and Moody: another Texan tale of less is more

What Big House Sound Inc. has done at Moody is a two-fold d&b solution, providing a dual purpose audio system for Moody’s basement club venue 3TEN, and revamping the main system in the theater proper with ArrayProcessing.

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Nightclubs and Bars

d&b provide a quality ingredient at Le Bernardin

The deliberate stimulation of the senses sets the human experience apart from the rest of the animal kingdom. At Le Bernardin restaurant, just off Broadway, New York, there is a policy of no compromise when it comes to producing a dining…

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More from the xS-Series

RSL Speedwoofer 12S Subwoofer Review – True 16Hz Extension!

In
our review of RSL’s Speedwoofer 10S MK2, we were delighted to find an outstanding
combination of performance, features, and usability, and we subsequently
declared it to be the most well-rounded sub in our 2023 subwoofer round-up. It packed a great punch for such a modestly sized
subwoofer, and it didn’t have any significant shortcomings. Together, those
factors made it a terrific value. However, its small size does give it some
inevitable performance limitations, since size is a major factor in determining
performance for any subwoofer. This begs the question: if RSL can squeeze that
kind of performance out of an already small cabinet, what can they do when the
enclosure size limitations are significantly relaxed? That brings us to today’s
review of the Speedwoofer 12S. This subwoofer fully doubles the size of the 10S
as well as substantially increasing the driver size (12″ compared to the 10″ in the Speedwoofer 10S MK II) and amplifier power. That
should bring about large gains, especially in deep bass, thereby giving RSL a
formidable offering for those putting together a serious home theater. The
questions we will be asking in today’s review are how competitive is the
Speedwoofer 12S in this segment of larger but affordable subs for deep bass,
and how well does RSL’s unique subwoofer design scale for this larger size?
Let’s now dig in to find out…

RSL Speedwoofer 12S Subwoofer- Product Details Revealed!

Packing and Appearance

The
Speedwoofer 12S arrived at my home in a worrisome large cardboard box. I knew
it would be a good-sized sub, but the box made it look like it would be huge.
This was not the case, because the packing was very formidable and gave the
subwoofer a lot of protection from rough shipping. Indeed, this is one of the
best-packed subs I have seen at any price. It is double-boxed, and inside the
inner box, the polyethylene foam packing pieces had thick edge protectors and
corner protectors on every edge and corner of the unit. What is more, the
polyethylene foam pieces didn’t just sandwich the top and bottom of the sub but
covered the entire surface area. The top foam piece even had the letters “RSL”
etched in it. The sub itself was covered with a soft foam sack to prevent it
from moisture contact or getting scuffed. This packing had to have been
expensive, but it shows that RSL cares about getting their product to end users
in good condition. Parcel companies will have to really put in extra effort to
damage this sub during transit (but I do not doubt that they will give it their
best try). As someone who deals with a lot of speaker and subwoofer packing, I
have to tip my hat to RSL here!

Once
unpacked, we are faced with a fairly typical sub with a few minor stylistic
flourishes. The finish is a dark textured vinyl that we often see in subwoofers
and speakers in this price range. It doesn’t reflect a lot of light and doesn’t
scuff or scratch easily. It also doesn’t show fingerprints like a satin or
gloss finish would. With the grille on, the Speedwoofer 12S is a nearly
featureless black box. The grille does round the front edges and corners which
helps to soften up the appearance somewhat. It gently curves over a lower base
piece that is finished in a plastic gloss and has the model name printed on it.
With the grille removed, the woofer is exposed, but I think it’s a cool-looking
cone. It is basically a larger version of their 10S cone, a smooth concave
aluminum piece held in by a beefy half-roll surround. There is an RSL logo
tooled into the bottom of the die-cast frame. There is an LED indicator meter
mounted in the top left of the front baffle, and when active, its light is
visible through the grille fabric. With the grille off, the edges are all hard
ninety-degree turns, and the corners are hard angels too. For this reason, I
think a lot of people are going to be using the grille; tripping and falling on
the uncovered edges or corners of this sub could be pretty nasty. Overall, the
Speedwoofer 12S doesn’t look bad but it isn’t going to win beauty contests
among subs in this class either. This is very much a function-over-form design,
so then let’s now talk about the design…

Design Analysis

The
Speedwoofer 12S shares a lot of the design of the 10S albeit scaled up a bit,
but it does take some engineering departures from RSL’s popular 10” sub. Let’s
start our analysis of the design with the driver. The 12S, as its name
suggests, uses a 12” driver. The cone material of the 12S driver is the same as
the 10S: a Kevlar-reinforced paper cone with an aluminum dustcap. The cone
attaches to a beefy cast aluminum frame by a nitrile rubber surround and two
Nomex spiders. The dual spider suspension system is interesting and is not
something seen on the 10S. The spiders face each other in a mirrored
configuration, and the advantage that brings is any non-linearities on one side
of the spider’s travel are negated by an inverse motion, and this design should
help to reduce even-order harmonic distortion products. This suspension system
should offer very even motion for both inward and outward travel of the moving
assembly. By using two spiders, the former should also be much more restricted
to a single plane of motion, and unwanted lateral movement should be greatly
reduced. The moving assembly should be much more difficult to knock out of
alignment, so this driver should be more durable than typical drivers.

The
FEA-optimized motor uses a large 2 3/4” diameter multi-layer copper voice coil.
It is surrounded by a 6.5” diameter stack of two magnets with a combined
thickness of 1 ⅝”. While the magnet dimensions don’t fully answer the question
of how much magnetic force it generates, I would guess it is pretty powerful.
Venting is done under the spiders as well as through the pole piece. The back
plate is bumped out to allow for greater excursion distances. Altogether, this
is an extremely hefty-looking driver for a sub at this price point.

The
driver is powered by a 500-watt Class-D amplifier called the XDR amp (where XDR
stands for eXtended Dynamic Range) with some sophisticated digital signal
processing onboard. It uses a double-precision 56-bit, 50 million-instructions-per-second
DSP processor that has four different preset response curves: Reference (has
the least equalization), Music (places more emphasis on music-band
frequencies), Movies (boosts the deep bass response), and Boundary (filters out
deeper frequencies so as not to bother neighbors). Class-D amplification gives
the 12S very high efficiency, and the standby power consumption is only 1 watt
as well. What’s more, the amplifier of the 12S uses a new heatsink technology
for greater thermal efficiency and capacity. Input connectivity consists of
left and right RCA connectors, as well as speaker-level connectivity. It also
has left/right RCA outputs. There is a USB power port for easier integration of
a wireless receiver. The controls are fairly standard: Volume knob, variable
phase knob, low-pass filter (30Hz to 250Hz with a 24dB/octave slope), and
auto-on power switch. The 12S also has a chassis ground screw on the amp plate
that can help those trying to get rid of a ground loop hum. 

While
the 12S doesn’t have app control, it does come with a remote control that can
change the DSP mode and volume level and also has a mute function. There is
also a front-mounted multi-segment LED meter that can show levels for volume as
well as display muting or DSP modes. This is useful because the user can easily
see what adjustments are being made on the sub itself when using the remote.
One quirk of the system is that the ‘auto-on’ can be overridden on the remote
control so the sub is ready to reproduce any signal without needing to be
activated by an amplitude threshold, but the remote is also needed to undo that
to go back to ‘auto-on.’

The
one non-standard control is very cool: a high-pass filter knob for the RCA
outputs that have a 30Hz to 250Hz range with a 24dB/octave slope. This is very
useful for simpler systems that have no bass management such as two-channel
rigs with a simple stereo preamplifier. You can route the signal from the
pre-amp to the sub and then to the amplifier, and the sub can do all the bass
management with the user simply setting the high-pass filter at the same
frequency as the low-pass filter. It does make me wish that the 12S had
balanced XLR or ¼” inputs and outputs, since balanced connectivity combined
with adjustable high-pass filtered outputs would be especially useful in small
‘prosumer’ studio systems.

The
12S has a 1” thick laminated front baffle and ¾” thick side panels. The
enclosure features RSL’s ‘compression guide technology’ that divides the
interior space into three different chambers where the backwave pressure from
the rear of the cone can compress and expand in a manner that reduces
resonances. it seems to borrow from transmission line theory, which can get
quite complex. Within the sub, there is a solid diagonal piece that stretches
from the lower front of the enclosure to the upper rear, so there are two
larger compartments in the enclosure. The upper rear of the sub is open so that
the backwave goes over it into the lower compartment. There is an opening in
the front of the lower compartment that opens up to a slot port that extends to
the back of the sub. The larger chambers divided by the diagonal piece are
filled with a thick batting material for damping internal waves. I don’t know
how well it works with respect to traditional ported enclosure designs, but it
does add a lot of internal bracing to the sidewalls of the 12S. It also has two
braces running along the top panel, as well as a plethora of corner bracing to
reinforce the edges. This sub is very sturdy, and it feels like it in both
weight and also a knock test on the panels.  

The
grille is a thick frame with fabric stretched over it. It is held on by some
sturdy plastic pegs that squeeze into rubber-lined grille guides. It’s a stout
grille and wouldn’t be easy to break. The feet are some rubber cylinders that
thankfully give fingers enough clearance to lift and lower the sub by hand.
Some heavy subs just don’t leave enough clearance to safely lower the unit to a
carpeted floor without the risk of crushing some fingers. RSL provides two sets
of furniture sliders for both hard surfaces and soft surfaces. The hard surface
furniture sliders have a soft, slippery bottom that enables the 12S to be slid
over hard flooring without the risk of scratching it. The soft surface
furniture slider enables the 12S to be slid over carpeted surfaces easily. It’s
a big and heavy sub, but RSL has provided means of moving it into position
without needing to strain back muscles. 

Overall,
it looks like the 12S is going after deeper bass extension and a bit more
overall output than the 10S from comparing the size of the driver versus the
enclosure size. The ingredients are there to make it happen. Let’s see how it
pans out in practice…

Listening Sessions

The best placement for a single sub in my
room gives me a relatively flat response for an un-EQ’d single subwoofer, with
a window of +/- 4 dB from 25 Hz to 100 Hz with no broad dips in important
ranges. This location trades low-end room gain for a relatively flat response,
a worthwhile trade for my tastes. The processor used was a Marantz AV7705. The
crossover was set to 80Hz. The speakers used were some Philharmonic BMR HT
Towers powered by a Monoprice Monolith 5×200-watt amplifier.

As always, I will note here that since
room acoustics have a huge effect on low frequencies, the way these subwoofers
sound in my room at my listening position is not necessarily going to be the
way they sound anywhere else for anyone else, so readers would do well to keep
that in mind, and not just for this subwoofer in this review but for any
subwoofer in any review.

Music Listening

Those who want
to give their music a cinematic quality would do well to invest in
a sub as good as the Speedwoofer 12S. 

As
always, I spin up a pipe organ album with some strong deep bass, since it is
one of the few acoustic instruments that can really take advantage of
subwoofer-band frequencies. Toward this end, I selected “The American Symphonic
Organ,” a 2013 release from the Brilliant Classics label. This recording
features an epic instrument in the form of the EM Skinner Symphonic Organ of
the Cincinnati Museum Center. This colossus has 5,000 pipes capped off by 32’
stops that can dig down to 16Hz with serious muscle. The music program is a
spread of traditional pieces selected by Jean Baptiste-Robin, a talented young
organist who studied under some of the most prominent modern organists. While
this album doesn’t dwell on the deeper registers constantly, it is not afraid
of deep bass and so serves as a great test for the low-frequency ability in
audio systems. I streamed this album from Qobuz.

The
first track, “La cathedrale engloutie,” set the stage for the rest of the
album, at least in the use of low frequencies. Deep bass notes serve as the
background for a gentle melody giving the composition a quiet sense of
grandeur, and the 12S was able to project the immensity of the organ and its
acoustic environment. The second track, another by Debussy, is more energetic
and punctuates a playful melody with counterpoints of deep bass seriousness
which were dispensed with a solemn weight by the 12S. I could hear that the
performance space was a very large one through the lingering reverb, and the
12S relayed this acoustic effect with a subtle but lengthy decay. Act II of
Bizet’s “Carmen” showed that the 12S could affect a light touch as opposed to
beating the listener over the head with powerful bass. Barber’s “Adagio for
Strings” was beautifully rendered by both speakers and sub. Most people
probably associate “Adagio for Strings” with Oliver Stone’s “Platoon,” but I
think its best use to date remains in “The Elephant Man. ” The spell left by the
serene resolution of “Adagio” was shattered by the bombastic opening from
Rachmaninoff’s “5 morceaux de fantaisie, Op.3: No.2,” with the 12S delivering a
startling wallop coming out of a moment of stillness. By the album’s end, I
could be certain that the 12S was a subwoofer that pipe organ enthusiasts would
enjoy a great deal.

Hans
Zimmer can be counted on to deliver orchestral music with lots of bass, and his
new release, “Hans Zimmer Live,” is a testament to that fact. Zimmer and a
group of artists he liked to term the ‘Disruptive Collective’ went on tour in
2022 and filled huge venues to capacity. They played rearrangements of many of
Zimmer’s most popular themes from movies like “Wonder Woman,” “Dune,” “The Lion
King,” and “Interstellar.” This album is a recording of one of these
performances, and it’s a good chance to show what a subwoofer can do with
large-scale music.

the 12S gave all of this sonic imagery a concrete foundation that made these
musical scenes that much more vivid.

The
12S was given a chance to shine early in “Hans Zimmer Live” when a mass of percussion
burst forth after a solitary vocal in “Dune: House Atreides.” The percussion
was formed from both a rock drum kit as well conventional orchestral
percussion, and the 12S had no problem keeping up with the attacks of the
multitude of percussive instruments. Many low-frequency sounds also came from
strings, brass, and synths, and Zimmer uses it all in famously bass-heavy
pieces from “Interstellar,” “The Dark Knight,” and “Man of Steel,” among
others. The pensive bass strings and synths from “The Dark Knight Suite” were
given a solid heft by the 12S which made me want to rewatch the film. Likewise,
the beefy organ sound from the second suite to “Interstellar” made me recall
the Imax experience where I last saw that movie. Although not as over-the-top, the
complex rhythm of bass guitar in the “No Time to Die Suite” was deftly
reproduced by the 12S. The deep yet soft strings from the “Gladiator” suites
were also expressed with enough finesse to be present without being
overbearing. I hadn’t actually intended to listen to the full 2+ hour running
time of “Hans Zimmer Live”, but the time flew by fast because of how fun it
was, and the Speedwoofer 12S was an integral part of making that happen.

For
something a lot less grandiose in musical style, I streamed “Mercury Mission
Diaries” from Qobuz. This new release comes from the genre of dark ambient from
the Cryo Chamber label and is a collaboration of many of their regular
contributing artists. The tracks here form an abstract narrative and allude to
the last days of a doomed spaceship mission. The music is highly atmospheric
and sounds like the soundtrack for a very dark science fiction movie. Deep bass
is pervasive but not in-your-face, and it is used with subtlety and nuance. It
takes a competent subwoofer to hit all the notes in this music without
overdoing it or underdoing it.

Bass
in the first track consists of atmospheric drones underscoring an undulating
arpeggiated bass line, and the 12S balances these separate elements nicely. The
second track, “Caloris Crash,” calms things down to minimalist levels, and
finds the subtle music of a spaceship’s engine bay. The steady rhythmic hum of
machinery gives way to a build-up of mechanical stress and climaxes in a
thunderous implosion. Tineidae’s “Prominence Forms” cranks things up a notch
with a more conventional composition (at least by the standards of this genre)
by including some actual percussion and a bassline in an urgent piece that
imparts a sense of crisis. The following track, “Suspended in Emptiness,”
sounds like the aftermath of a space catastrophe and is almost entirely
atmospheric. Even darker ambiance is encountered in “Red Hot Harvest” by
Onasander, which portrays a colossal alien landscape through cold, reverberant
pads and unnerving drones. The music throughout these tracks is intended to
evoke scenery for a narrative that the listener can supply if they want, and
the 12S gave all of this sonic imagery a concrete foundation that made these
musical scenes that much more vivid. Ominous drones, shuddering machines, and
otherworldly thunderstorms are reproduced by the 12S with a physical texture
that can only really be had from a high-performance subwoofer. Those who want
to give their dark ambient music a cinematic quality would do well to invest in
a subwoofer as good as the Speedwoofer 12S.  

To
see how the 12S could withstand being pushed hard, I threw on “Still
Contagious,” a compilation of heavy dubstep tracks from Wonk#ay Records. While
the music on this particular album is on the harder end of dubstep, it is a lot
more inventive and artful than the run-of-the-mill SoundCloud content in this
genre, and it is a lot of fun to listen to. The bass is massive on this album,
and, at high volumes, will be a tough load for any subwoofer.

With
the volume cranked high on the 12S, “Still Contagious” had a club-like sound
except with home audio acoustics, so I was given the best of both worlds. The
beats in this album are fat to the point of being morbidly obese, and the 12S
made them sound like the footsteps of Godzilla. Each kick drum hit had a
visceral thump that could be felt in my chest. The rolling basslines buzzed
with a palpable thickness. “Yuck Bucket” by Teniak was a low-frequency delight
with a growling bassline that danced on top of some very broken breakbeats. The
beats and bassline of GrymeTyme’s “36” felt like an oversized dump truck
unloaded a bed full of cinder blocks on my ears. The beats in “Colossus” by
Crowdad Sniper felt utterly concussive at a high volume by the 12S. The fattest
beats and grimiest sound have to be awarded to ADDL’s “Also Syphilis,” which,
on the 12S at a high level, could only be described as a bowel-churning
experience. The Speedwoofer 12S was certainly capable of delivering the brutal
bass of “Still Contagious.”

In
one passage, I pushed it really hard, and after a certain point it didn’t get
any louder, but it never audibly distorted. This was at an extremely loud
level; so loud in fact that I turned off the amp to the main speakers just to
get a sense of the sub’s own limits without going deaf. I would say that a
single 12S would be enough for most people in any medium-sized room, or maybe
even a large room if the user doesn’t need extreme loudness levels. To fill a
large room, two will likely suffice for all but the most ardent bass heads. The
good news is that these are so inexpensive that a multi-sub 12S system isn’t a
hugely expensive proposition. Multiple subs are pretty much required to get a
smooth in-room low-frequency response anyway, so long as the user has the
freedom of placement to spread the subs out. Among the multiple articles that
Audioholics has published on this subject: History of Multi-Sub
& Sound Field Management for Small Room Acoustics and Early Reflections and
Bass for Small Room Acoustics. Another advantage of a multi-sub system is that the
subs will last longer if they are not driven hard frequently. A multiple
Speedwoofer 12S would be a pretty killer system, especially for those who love
bass-heavy music.

Movie Watching

the bass from the 12S
making it sound like the listener is caught in a tornado.

One
movie that I had not yet seen but looked like it could have a wealth of deep
bass in the sound mix was the 2014 sci-fi actioner “Lucy,” helmed by the famous
French action movie director Luc Besson. The plot of this movie concerns a young
American student in Taiwan who is forced to become a drug carrier of high-tech
designer drugs for an international cartel. She smuggles a large quantity of an
experimental drug in her stomach, but when one of the cartel thugs kicks her in
the abdomen, the seals for the drug break, and its effect is that her intellect
radically increases thereby making her a threat to her cartel captors. The
trailer promised lots of fighting and gunplay, and with a music score by Eric
Serra, this movie should give the subwoofer a lot to do.

The
premise for the movie ended up being quite a bit more absurd than I bargained
for, but the bass quality and quantity did not disappoint. Much of the bass
sound came from the music and the ‘metamorphosis’ scenes of the main title
character. Lucy’s intake of the experimental drug and its effects on her
physiology was kaleidoscopic brain-bending journeys, with the bass from the 12S
making it sound like the listener is caught in a tornado. Much of the gunfire
and fistfights weren’t mixed to be bass-heavy, but one action scene that did
compel ample subwoofer usage was a lengthy car chase through the streets of
Paris. Much of the chase was a car racing the wrong way against the flow of
traffic, and the resultant carnage kept the sub busy with satisfying crunches
and crashes of vehicles rolling over in the wake of the recklessly driven car.
Most of the bass in the sound mix comes from Eric Serra’s music score. Serra is
a frequent collaborator with Besson, and his scores always utilize lots of deep
bass: see “La Femme Nikita,” “Leon the Professional,” and “The Fifth Element.”
He brings that same sound signature to “Lucy” with a brooding, tense score.
Pulsating synth bass sound drives the action, and massive koto-esque drums
punctuate plot developments with thunderous declaration. The Speedwoofer 12S
reproduced this bruising score without strain, and everything sounded larger
than life and cinematic. “Lucy” was ridiculous fun, and the 12S helped to make
its preposterousness bearable.

Another
movie that looked like a bass fest which I hadn’t seen but was interested in
was a newer release on Netflix titled “Day Shift.” It concerns a Los Angeles
man, played by Jamie Foxx, posing as a pool cleaner as a cover for his real
occupation as a unionized vampire hunter. The movie looks to be a fun blend of
comedy, action, and supernatural thrills, and it promised loads of
low-frequency mayhem.

“Day
Shift” did indeed have its fair share of powerful bass, and that was
demonstrated in the opening scene when our protagonist fought a vicious vampire
with a plethora of weapons. The main character’s preference for a short-barrel
pump-action shotgun as his primary weapon gave the 12S plenty to do, and it
gave each blast a tactile punch. Other firearms kept the 12S busy as well, including
a variety of pistols, automatic rifles, and a small chain gun. Likewise, the
super-human strength of the vampires was exhibited by the subwoofer with a
brawny oomph as they kicked and punched our hero through the air and against
walls. There was also plenty of low-frequency carnage in a requisite car chase
where the protagonist’s 60s Chevy 4×4 is chased through a run-down L.A.
district (including the obligatory detour through L.A.’s canal system) by a
Baja race truck, Dodge Charger, and a fleet of motorcyclists. Roaring V8s and
head-on collisions were given a visceral grunt by the 12S which lent the mass
and weight of these vehicles a bit more reality. The music score by Tyler Bates
was mostly rock with a pinch of orchestral, and the sub was given a lot more to
do with the various rap songs thrown in with tracks by Ice Cube, Snoop Dogg,
and Ol’ Dirty Bastard. The 12S energized my room with hip-hop beats and bass
with at least as much power as any of the action scenes. “Day Shift” was a
perfect breezy movie for a Saturday afternoon matinee, and the Speedwoofer 12S
helped to make it feel like a true movie-going experience.

Jump to:

Introduction
RSL Speedwoofer 12S Measurements and Conclusion

Next Page ⇨

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Pump LOTOS 80SA

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ZOTA stainless manifold, with flow meters 6 outlets

Stainless ZOTA manifolds are designed for distribution of flows along the contours of underfloor heating, radiator heating and other climate systems, their manual or automatic (when installing servomotors) shutdown, hydraulic balancing of the system, automatic removal of air from coolant and, if necessary, emptying the system. The flowmeters are made of nylon manufactured by the Swiss company Grilamid TR. It is transparent, hard, durable. Resistant to cracks under high stress and bending, does not decompose with chemically active solutions.
The drain group and the air vent have a thicker wall (2.4 mm) and are 100 grams heavier than the main competitors. Stainless ZOTA manifolds are equipped with adjustable brackets (175-240 mm) for fixing them to a wall or in a manifold cabinet. The use of ZOTA stainless steel collectors saves money and time of installation, the ability to minimize the likelihood of design and installation errors. The equipment is compact, reliable, easy to operate and install. Stainless manifolds are presented in two types: Stainless steel manifold assembly: the kit includes a flow meter, air vent, drain cock, adjustable bracket.
Stainless steel manifold with flow meters: the kit includes a flow meter, adjustable bracket. This manifold is not equipped with a drain group.

Electric heating boiler ZOTA Econom-9 kW

Electric boiler ZOTA SMART SE 27 kW is a reliable and economical solution for home heating. It provides fast and efficient operation.

Electric boilers of the ZOTA “Econom-9” series are designed for independent heat supply of residential and industrial premises up to 480 m2 and can be used in systems with natural (ZOTA “Econom” 3-15) and pumped circulation.

All boilers are equipped with heating elements (block heating elements) of various capacities of a special design made of stainless steel tubes. The main difference from the ZOTA “Lux” series is the placement of the boiler and the boiler control unit in different housings. Econom electric boiler control panels operate both on silent power relays and on magnetic starters.

Advantages of electric boilers of the ZOTA “Econom-9” series»

Control panels with automatic control of the air temperature in the room from +10 to +35°C and the heat carrier at the outlet of the boiler from +40 to +90°C ensure optimal operation of the system in the specified modes.

The presence of automatic power levels (only for ZOTA “Econom” 18-48) allows you to use the consumed electricity more economically. Electric boilers ZOTA “Econom” are simple and reliable in operation, as well as in electric boilers ZOTA “Lux”, they have a self-diagnosis system and a rotation system for heating elements and power units.

Electric heating boiler ZOTA Balance-7.5 kW

Electric boiler ZOTA Balance-7.5 kW is an efficient and reliable solution for home heating. Economical and easy to operate.

The ZOTA Balance 7.5 electric boiler is a novelty in the ZOTA electric boiler range. Five models with power from 3 to 9 kW. Economical, simple, compact model with a small power range. Balance electric boilers are no less reliable than their “big brothers”, they use the same heater blocks as in the best ZOTA boilers. They are very easy to install and operate.

The main features of the product:

– the use of heating elements of a special design with a reduced watt load made of stainless steel; – the possibility of using non-freezing coolants; – thermal insulation of the case; – ease of maintenance; – three power levels for efficient energy consumption; – silent operation of the power unit due to the use of electromagnetic relays in the switching scheme; – adjustment of the water heating temperature up to 90°С; – working pressure 6 atmospheres; – connecting dimensions of branch pipes 1 1/4”.

Advantages of electric boilers of the ZOTA “Balance 7.5″ series

The main features of the product:

– the use of heating elements of a special design with a reduced watt load made of stainless steel; – the possibility of using non-freezing coolants; – thermal insulation of the case; – ease of maintenance; – three power levels for efficient energy consumption; – silent operation of the power unit due to the use of electromagnetic relays in the switching scheme; – adjustment of the water heating temperature up to 90°С; – working pressure 6 atmospheres; – connecting dimensions of branch pipes 1 1/4”.

Pump LOTOS 80LA

Pump stations ZOTA “LOTOS 80LA” are designed for pumping clean water from wells, wells and other sources of water supply, as well as for supplying water under constant pressure in automatic mode. At the same time, water heaters, gas water heaters, washing machines and dishwashers, automatic irrigation systems can be connected to the pumping station.

Pumping stations are designed for use only in domestic hydraulic systems and are not to be used for commercial and industrial purposes.

Electric heating boiler ZOTA Econom-7.5 kW

Electric boiler ZOTA SMART SE 33 kW is a reliable and energy-efficient solution for home heating. It ensures smooth operation and delivers maximum performance.

Electric boilers of the ZOTA “Econom-7.5” series are designed for independent heat supply of residential and industrial premises up to 480 m2 and can be used in systems with natural (ZOTA “Econom” 3-15) and pumped circulation.

All boilers are equipped with heating elements (block heating elements) of various capacities of a special design made of stainless steel tubes. The main difference from the ZOTA “Lux” series is the placement of the boiler and the boiler control unit in different housings. Econom electric boiler control panels operate both on silent power relays and on magnetic starters.

Advantages of electric boilers of the ZOTA “Econom-7.5” series

Control panels with automatic control of the air temperature in the room from +10 to +35°C and the heat carrier at the outlet of the boiler from +40 to +90°С ensure optimal operation of the system in the specified modes.

The presence of automatic power levels (only for ZOTA “Econom” 18-48) allows you to use the consumed electricity more economically. Electric boilers ZOTA “Econom” are simple and reliable in operation, as well as in electric boilers ZOTA “Lux”, they have a self-diagnosis system and a rotation system for heating elements and power units.

TENB-15 kW (2″) connection kit for TT boilers (without cable)

About the product

For those who do not want to wake up in the middle of the night to load fuel, this is an additional heat source that provides an acceptable temperature at night. For most, electric heating is an additional and inexpensive insurance against “defrosting” an expensive heating system.

TENB – a block with three stainless steel heating elements. The original shape of the heaters in the form of spirals provides a longer service life and the possibility of trouble-free operation with non-freezing coolants.

PU EVT – control panel, allows you to control the temperature through two temperature channels: by the temperature of the coolant and by the air temperature. Using the control panel is possible not only to ensure the safety function of the heating system, but also to maintain the required and sufficient temperature, which will save you money when paying your electricity bills.

Suitable for

Master

“Master X”

“Topol M”

“Topol-VK”

Carbon

box

“Yenisei”

Bulat

Semi-automatic boiler Bulat Turbo

Semi-automatic boiler Magna

Automatic coal boiler “Stakhanov”

Automatic pellet boiler Pellet S

Universal automatic boiler Optima

Automatic pellet boiler Pony

Automatic coal boiler Forta

Equipment

TENB (3; 4.5; 6; 7. 5; 9; 12; 15 kW) – block of heating elements

PU EVT (3; 6; 9; 12; 15 kW) – heating elements control panel with coolant and air temperature sensors.

Cable connecting copper section – 4 sq.m. mm, length = 2 m

LOTOS 100SA pump

ZOTA “LOTOS 100SA” pumping stations are designed for pumping clean water from wells, wells and other sources of water supply, as well as for supplying water under constant pressure in automatic mode. At the same time, water heaters, gas water heaters, washing machines and dishwashers, automatic irrigation systems can be connected to the pumping station.

Pumping stations are designed for use only in domestic hydraulic systems and are not to be used for commercial and industrial purposes.

Batteries ZOTA AGM 65-12

Two types of four different capacities make up eight positions in the assortment offer. Batteries ZOTA AGM 65-12 meet all international standards. Batteries made using AGM technology (withstand approximately 250 – 400 discharge cycles by 80%) serve up to 10 years in a backup power circuit. GEL batteries in similar operating conditions serve up to 12 years. Withstand approximately 350 – 500 discharge cycles by 80%. Both types of batteries are recommended for uninterruptible power backup. The longest battery life is achieved when operated under the control of the Matrix uninterruptible power supply.

Benefits of ZOTA AGM 65-12 Battery UPS Series

1. Does not require maintenance; 2. The design is sealed and valve-controlled, which prevents acid leakage and terminal corrosion; 3. Safe operation: when the batteries are properly charged, the possibility of gassing and the risk of explosion is eliminated; 4. It is possible to install the battery in almost any position; 5. Increased service life in conditions of high vibration; 6. Extended service life in the buffer mode of operation – 15 years; 7. Stable operation under heavy loads.

Electric heating boiler ZOTA Balance-9 kW

Electric boiler ZOTA Balance-9 kW is a reliable and economical solution for home heating. High performance, reliability and durability.

The ZOTA Balance 9 electric boiler is a novelty in the ZOTA range of electric boilers. Five models with power from 3 to 9 kW. Economical, simple, compact model with a small power range. Balance electric boilers are no less reliable than their “big brothers”, they use the same heater blocks as in the best ZOTA boilers. They are very easy to install and operate.

The main features of the product:

– the use of heating elements of a special design with a reduced watt load made of stainless steel; – the possibility of using non-freezing coolants; – thermal insulation of the case; – ease of maintenance; – three power levels for efficient energy consumption; – silent operation of the power unit due to the use of electromagnetic relays in the switching scheme; – adjustment of the water heating temperature up to 90°С; – working pressure 6 atmospheres; – connecting dimensions of branch pipes 1 1/4”.

Advantages of electric boilers of the ZOTA “Balance 9″ series

The main features of the product:

– the use of heating elements of a special design with a reduced watt load made of stainless steel; – the possibility of using non-freezing coolants; – thermal insulation of the case; – ease of maintenance; – three power levels for efficient energy consumption; – silent operation of the power unit due to the use of electromagnetic relays in the switching scheme; – adjustment of the water heating temperature up to 90°С; – working pressure 6 atmospheres; – connecting dimensions of branch pipes 1 1/4”.

ZOTA GSM-Pellet/Stakhanov control module

Advantages ZOTA GSM-Pellet/Stakhanov module

GSM / GPRS module – an option for completing electric boilers of the Lux, MK, MK-S, Smart SE, Solid series, Pellet S, Stakhanov, Maxima and Optima automatic boilers, Magna semi-automatic boilers; in Smart boilers – an element of the basic configuration.

The ZOTA GSM/GPRS Lux/MK and Smart SE/MK-S/Solid control module is designed to control and manage electric water heaters of the Zota Lux/MK/SmartSE/MK-S/Solid series using a mobile phone, via the short message service (SMS), using a mobile application on Android or iOS or through the site control.zota.ru.

Through the short message service (sms), the GSM/GPRS module allows you to set: • Number of power levels from 0 to 3; • Coolant temperature from +30 to +90°С;• Air temperature in the room from +5 to +35°С;• Built-in thermostat operation mode from 0 to 3. Through the short message service (sms), the GSM/GPRS module allows you to control:• Heat carrier temperature;• Air temperature in room temperature;• Outdoor temperature;• Thermostat operating mode;• Set number of power steps;• Set coolant temperature;• Set room air temperature;• Phone numbers stored in the module’s memory;• Cash balance on the SIM card account.

Through a mobile application or website, the GSM / GPRS module allows you to control and manage the following parameters:

• Boiler power;• Room t°С;• Coolant t°С;• Weather regulation;• Thermostat;• Pump 1;• Pump 2;• Valve;• Boiler operating mode.

ZOTA GSM Pellet/Stakhanov/Optima/Maxima control module (for boilers up to 05/31/2022)

GSM / GPRS module – an option for completing electric boilers of the Lux, MK, MK-S, Smart SE, Solid series, Pellet S, Stakhanov, Maxima and Optima automatic boilers, Magna semi-automatic boilers; in Smart boilers – an element of the basic configuration.

The ZOTA GSM/GPRS Lux/MK and Smart SE/MK-S/Solid control module is designed to control and manage electric water heaters of the Zota Lux/MK/SmartSE/MK-S/Solid series using a mobile phone, via the short message service (SMS), using a mobile application on Android or iOS or through the site control.zota.ru.

Through the short message service (sms), the GSM/GPRS module allows you to set: • Number of power levels from 0 to 3; • Coolant temperature from +30 to +90°С;• Air temperature in the room from +5 to +35°С;• Built-in thermostat operation mode from 0 to 3. Through the short message service (sms), the GSM/GPRS module allows you to control:• Heat carrier temperature;• Air temperature in room temperature;• Outdoor temperature;• Thermostat operating mode;• Set number of power steps;• Set coolant temperature;• Set room air temperature;• Phone numbers stored in the module’s memory;• Cash balance on the SIM card account.

Through a mobile application or website, the GSM / GPRS module allows you to control and manage the following parameters:

• Boiler power;• Room t°С;• Coolant t°С;• Weather regulation;• Thermostat;• Pump 1;• Pump 2;• Valve;• Boiler operating mode.

Gas flow regulator RRG-12, DN 4 mm (up to 1800 l/h)

Gas flow regulators model RRG-12 are designed to supply gases to process equipment in several control ranges with upper limits (Qvp) from 0.36 to 1800 nl/h (for nitrogen).

• Nominal diameter DN 4 mm
• Basic gas flow control error no more than 1.2% of the upper limit of flow control (Qvp)
• Gases:
• pure and extra pure gases
• neutral, corrosive, toxic, explosive and flammable gases
• Regulator tightness: < 1. 3*10 ^-9 Pa*m ³ /s

RRG-12 – digital regulator with digital and analog control. To operate the RRG-10 regulator, power supply from a +15V DC source is required, as well as a control program via the computer’s COM port. Exchange protocols: Modbus RTU, Eltochpribor 10M. The RRG-12 regulator can work with the RRG-K controller in digital mode, as well as with BUIP-1M and BUIP-3 units in analog control mode.

RWG MODEL CODE FOR ORDER / REQUEST

“ RRG” – gas flow regulator,

“10” – regulator model,

“900” – upper limit of regulation Qvp, l/h,

“10” – analog output signal (5 or 10 V),

“TM.4” – designation of the fitting at the “inlet-outlet” of the RRG (see the “Nipple connections” tab),

“H ₂ ” – gas*

* – All RWG Eltochpribor are calibrated for nitrogen. If it is necessary to use the regulator on other gases, use the values ​​of the correction factors given in the table: https://eltochpribor.ru/informatsiya/?ELEMENT_ID=204

Mounting kits must be specified separately when ordering.

Additionally, you can order adapters for PVC pipes.

Repair Regulator Requirements:

1. Incomplete regulators (without flanges, etc.) are not accepted for repair,

2. All regulators must be purged with an inert gas before being sent for repair.

3. Describe the problem in detail.

VIDEO:

RRG-12 electronic gas mass flow controller – overview

Control of RRG-12 operation using PC program

Control system for three RRG-12 regulators

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