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RSL Debuts Speedwoofer 10E for Only $299

RSL Speakers undercuts its own pricing by offering a new 10-inch, 300-watt powered subwoofer for music and home theater.

RSL Speakers Speedwoofer 10E Subwoofer Front

If your stereo or home theater system could use some additional low end support but your budget right now is rather limited, RSL Speakers has something surprisingly affordable which is likely to overachieve for its surprisingly low asking price. Based on our experience with their other subwoofers, we suspect this might be one of the best values in their lineup. Their new 300-watt subwoofer, the RSL Speakers Speedwoofer 10E, debuts this week for only $299.

The Speedwoofer 10E is the newest and least expensive member of the award-winning Speedwoofer family, joining the Speedwoofer 10S MKII ($449) and Speedwoofer 12S ($799). The original Speedwoofer 10S ($429) we reviewed a few years ago has been discontinued.

E is for Everyone

According to RSL, the subwoofer is named the Speedwoofer 10E to be “the subwoofer for everyone”.

The company said the 10E is actually a bit more powerful than the 10S original. Sonically, the 10E will have the classic “Speedwoofer Sound”; maintaining tight accurate bass, while still being able to provide an effortlessly low end extension with oomph! The 10S MKII will still dig deeper and hit higher SPLs than the 10E. As well, the 10S MKII has more connection options for the user than the 10E.

The 12S is the 10S MKII on steroids and can dig substantially deeper at even higher SPLs with pinpoint accuracy and effortless delivery.

RSL Speakers Speedwoofer 10E Subwoofer Rear
Speedwoofer 10E

What’s New?

Although the cabinet dimensions are the same between the 10E and 10S MKII, the internal port and external port areas are different. The 10S MKII has a flared/radiused rear port to reduce chuffing, while the 10E’s rear port does not. Yet, both still feature Compression Guide tuning for improved bass output and transient performance.

The Speedwoofer 10E driver has been re-designed and is now a stamped steel basket as compared to the cast frame on the MKII.

On the back panel, the amp on the 10E no longer has Speaker Level Inputs or any Low-Level Outputs. It does not come with the AR4 Wireless receiver built in but customers can add the wireless kit for an additional $80 when purchased at the same time as the 10E.

There is no longer the painted MDF Speedwoofer Logo panel on the front of the cabinet. Instead it includes a color matched grille that covers the entire front baffle with a metal RSL Logo at the bottom.


Speedwoofer 10ESpeedwoofer 10S MKIISpeedwoofer 12S
Woofer 10-inch10-inch12-inch
Lowest Frequency ± 3db26 Hz22 Hz16 Hz
Highest Frequency200 Hz200 Hz200 Hz
Selectable Crossover30-200 hz40-200 hz30-250 Hz
Amp modelXDR-300WXDR-400WXDR-500
Amplifier typeClass DClass DClass D
RMS <1% THD300 watts400 watts500 watts
Peak Power800 watts1020 watts1550 watts
Phase Control0 to 180 continuously variable0 to 180 continuously variable0 to 180 continuously variable
Low Pass Crossover / Slope30-200 Hz variable @12dB/Octave40-200 Hz variable @ 24dB/Octave30-250 Hz variable @ 24dB/Octave
High Pass Crossover / Slope30-250 Hz variable @ 24dB/Octave
DSP Processor56-bit, 50 MIPS DSP56-bit, 50 MIPS DSP
DSP ModesLFE, MusicReference, Music, Movies, Boundary
Crossover Bypass SwitchYes (embedded with low pass control)Yes (embedded with low pass control)
Removable cloth grilleYesYes
Front LEDYes
Remote ControlYes
3.5mm IR inputYes
USB InputFor power only
Wireless readyRequires AT-4/AR-4 KitYes, Requires AT-4 TransmitterRequires AT-4/AR-4 Kit
Wireless Adapter (optional)RSL AT-4/AR-4 Kit ($100) 
Transmitter & Receiver
RSL AT-4 ($50)
Transmitter only
RSL AT-4/AR-4 Kit ($100) 
Transmitter & Receiver
Wireless range50 feet50 feet50 feet
Standby power1 watt0.5 watt1 watt
Fuse15V (T5.0AL/250V) – 230V (T2.5.0AL/250V)115V (T5.0AL/250V) – 230V (T2.5.0AL/250V)115V (T6.3AL/250V) – 230V (T3.15AL/250V)
Dimensions (HxWxD)15 1/2” x 15” x 15 3/4”15 1/2” x 15” x 15 3/4”22 1/4” x 18 7/8” x 22 1/8”
Warranty5 years on woofer
2 years on electronics
5 years on woofer
2 years on electronics
5 years on woofer
3 years on the electronics
ColorBlackBlack or WhiteBlack
Weight40 lbs40.6 lbs82 lbs

Price & Availability

The RSL Speedwoofer 10E will be available Friday, March 29, 2024 for $299 at

Tip: Which RSL Speedwoofer is the Right Subwoofer For You?

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Related: 7 Affordable Hi-Fi Gift Ideas That Make Music Sound Better

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