Speedwoofer 12S

Features:

500 watts RMS / 1550 watts peak
Die-cast aluminum frame 12” woofer w/ dual-mirrored true Nomex™ spiders
Proprietary multi-function PCB Heat Sink/EMI Shield
Deep bass extension down to 16Hz! (anechoic)
4 DSP Modes - Movie, Music, Reference, Boundary
New rear-vented Compression Guide™ tuning
Convenient IR remote control functionality
New AR4 - External Wireless option available
Independent adjustable line-level high-pass outputs (30-250Hz)
Warranty: 5-year woofer / 3-year electronics
ALL SPEEDWOOFERS INCLUDE A COLOR-MATCHED GRILLE

Terms & Conditions:

Free shipping within the 48 states!
Highly discounted international shipping available
30-day in-home trial period
Cancellations must be requested prior to shipping
A 3.5% cancellation fee will apply
$150 flat-rate return fee per Speedwoofer 12S from the 48 states. (measure your space!)

NOTE FROM RSL TEAM

Note from RSL Team

Help us to reduce or eliminate the return fee!
Our return fee is in place for the sole purpose of protecting the Speedwoofers’ industry-leading performance and pricing. The cost of one-way shipping for a Speedwoofer ranges from $40 to $150. Double that and add a substantial cost for repackaging and recertification, and it becomes obvious why returns have such an impact. This holds true for ALL consumer-direct products. So please keep this in mind wherever you shop, and support us in the fight to eliminate the Speedwoofer return fee.

The two leading causes of Speedwoofer returns continue to be simple over-ordering and spatial constraints. As such, we would like to ask you to kindly consider the following before ordering:

Measure twice, order once! Please measure your intended subwoofer locations to ensure the Speedwoofer will fit. Then measure again!
Check with your family members! Make sure the Speedwoofer’s aesthetics are acceptable for your home.
Order LESS! That might sound strange, but if you aren’t sure how many Speedwoofers you’ll need, start with just one. We know that the affordable price makes multiples even more compelling. However, we would rather build your system to where it needs to be, than have you pay return fees later.
Ask for guidance! We are always happy to answer questions and make recommendations. No question is too big or small.

We’d love to see the return fees disappear. Together, we can make it happen!

Thank you and best regards,
The RSL Team

Color: Black (Matte)

$799each

Condition

Factory New A. Just like new B. Minor blemishes C. Noticeable blemishes

View Specifications

Product variants

Speedwoofer 12S

Product Preview

Size

Frequency Response

Unboxing

UNBOXING YOUR SPEEDWOOFER12S

Everything I was hoping for !

I bought the RSL 12S because I always wanted a true subwoofer at a fair price, and oh boy, did RSL deliver. Thank you to Audioholics and the many other stellar online / YT reviews. The cabinet is big but RSL warns everyone before purchase to Measure Twice and Cut Once, as one says, and get buy-in from other family members, but it fits the space once occupied by my old Velodyne DLS-5000R (amp developed a hum and was too expensive to fix) perfectly. I don't miss it one bit though. I am amazed by my new subwoofer, and it's so much better in every way than what I've owned before.

And it fits perfectly on top of my "SubDude-HT Subwoofer Isolation Pad" like it was made for it, so needed in my space because of the wood floor over a crawlspace. The whole house would shake and rattle otherwise.

I have the 12S set to Reference and at 5/10 bars. I ran YPAO on my Yamaha RX-3900 receiver and now the 12S is matched wonderfully in my 5.1 system with my old Polks (L/R: RT1000p, C: CS400 Rears: FX500).

Thanks again RSL for answering all my questions before purchase and for braving the terrible Dec 2024 / Jan 2025 LA fires.

awesome sub woofer

This is my first expensive sub woofer. Had a dayton 12 inch sub and this one is a huge leap. This sub truly disappears from the sound stage ( no unwanted boom sounds). After experiencing movies with this sub you cant watch them on any other sub!

12S upgrade

Upgraded from dual 10S mkII to dual 12S. My 10S were great. But the 12S are monsters. They really fill in the room. It’s not that they’re a lot louder. It’s just a better balanced sound throughout the whole volume range. If you crank it up they really rumble the room! Really happy with these speakers.

Average Room - Great Bass

Until about a week before I made my purchase, I knew nothing about RSL and their speakers. After a few online reviews, I decided to give them a shot. The 12s is a great sounding sub!

Let there be Bass!

I love my 2 12S Speedwoofers even though my neighbors don't.
Thank You Joe and the RSL Team

SPECIFICATIONS

Speedwoofer 12S

Frequency Response:
- Reference Mode (anechoic): 16 Hz-200 Hz ± 3db (SEE GRAPH FOR VARIOUS DSP RESPONSES)
Woofer:
- 12” 500+ watt rated woofer
- 4 ohm nominal Impedance
- Proprietary RSL Die-cast aluminum frame with dual spider integration
- Klippel optimized linear magnet motor and matched suspension
- High-Excursion FEA optimized design motor structure
  - Integral VC Heat Sink/Inductance Control Sleeve
  - 1008 low-carbon steel motor parts (T-yoke and field plate)
  - Premium grade dual-stacked ceramic magnets
  - Ultra-high Temp (>200° C), Multi-layer Copper Voice Coil
- Dual-mirrored, High yield fatigue-resistant Nomex™ spiders
- Integrated Dual Spider spacer clamp ring
- Kevlar™ reinforced paper cone with full anodized aluminum dust cap
- High durability NBR surround
- High duty cycle periodically stitched flexible tinsel lead wire with strain relief features
Enclosure:
- Scratch and fingerprint resistant textured matte finish
- Front multi-segment LED display/indicator (Volume, Mute, & DSP MODE)
  - Display sleeps after ~10 sec. of inactivity
- Rear-vented Compression Guide™ tuning with turbulent free slot port
- Internal structural reinforcement (Side to side, front to back, and top cross-bracing)
- ¾” thick MDF panels with dado reinforced joints plus corner bracing
- Laminated 1” front woofer baffle
- Internally optimized damping
- Removable cloth grille
XDR Series Amplifier:
- IR Remote Control (Power Toggle, Volume +-, Mute, DSP Mode direct select (Reference, Music, Movies, Boundary)
- External 3.5mm IR input for wiring external IR sensor (eye)
- 500 watts RMS < 1% THD
- 1550 watts peak
- Patent Pending HSS™ Heat Sink/Shield Technology for greater thermal efficiency and capacity
- DSP Modes – Reference, Music, Movies, Boundary (Rear LED indicator matches front display)
  - Reference – Minimal EQ processing, “natural” response for ideal transient performance
  - Music – Shelved response for extension, but with good upper bass impact
  - Movies – Enhanced output between 25-35Hz to augment low frequency content at low levels
  - Boundary – “Neighbor friendly”…Reduced lower frequencies to limit rumble through walls
- Integrated double-precision 56-bit, 50 MIPS DSP processor
- Intelligent class D topology, >85% Efficiency
- Signal to noise ratio: >85dB
- Auto-ON Threshold: 3mV
- Auto-OFF: ~20 minutes (no signal)
- Stand-by power consumption: ~1 watt
- Power Input: Selectable 110/230VAC 50-60Hz switch
- Low EMI design, CE & C-Tick compliant
- Gold-plated RCA Line level inputs and RCA High-pass signal outputs (high-pass is adjustable and can be bypassed)
- Speaker level inputs (Gold-plated, 5-way binding posts)
- Chassis ground screw
- USB Power port, easily connect external AR-4 2.4GHz wireless receiver
Low Pass Crossover Frequency: 30-250 Hz variable (with integrated bypass switch)
Low Pass Crossover Slope: 24 db/oct.
High Pass RCA Output Crossover Frequency: 30-250 Hz variable (with integrated bypass switch)
High Pass RCA Output Crossover Slope: 24 db/oct.
Phase Control: 0 to 180 continuously variable
Power Input: 115V, 60Hz, 230V, 50/60Hz AC
Feet: Includes 4 rubber feet
Dimensions with Feet: H: 22 1/4” W: 18 7/8” D: 22 1/8”
Weight: 82 lbs.
Shipping Dimensions: H: 29” W: 25” D: 29”
Shipped Weight: ~106 lbs.
Fuse: 115V (T6.3AL/250V) – 230V (T3.15AL/250V)