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Features:
- Now with 400 watts RMS / 1020 watts peak
- Cast-frame 10” woofer w/ improved thermal capacity
- New LFE mode offers deeper extension (22Hz!)
- Music mode matches original 10S w/ improved dynamics
- New rear-vented Compression Guide™ tuning
- Wireless ready. Option to add during checkout*
- Limited quantity available
- Free shipping within the 48 states!
- 30 day in-home trial period
- Limit of 2 Speedwoofers per customer
- $25 flat-rate return fee from 48 states. NOTE FROM RSL TEAM
Pre-ordered Speedwoofers are now shipping! The next batch of Speedwoofers is due in late June. Sign up to be notified of the next pre-order.
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RSL Speedwoofer 10S MKII - Pre-Order













Features:
- Now with 400 watts RMS / 1020 watts peak
- Cast-frame 10” woofer w/ improved thermal capacity
- New LFE mode offers deeper extension (22Hz!)
- Music mode matches original 10S w/ improved dynamics
- New rear-vented Compression Guide™ tuning
- Wireless ready. Option to add during checkout*
- Limited quantity available
- Free shipping within the 48 states!
- 30 day in-home trial period
- Limit of 2 Speedwoofers per customer
- $25 flat-rate return fee from 48 states. NOTE FROM RSL TEAM
Pre-ordered Speedwoofers are now shipping! The next batch of Speedwoofers is due in late June. Sign up to be notified of the next pre-order.
Sign up below to receive updates



SPEEDWOOFER 10S MKII
The Speedwoofer 10S MKII takes the multi-award-winning and revolutionary performance of the original to the next level. A brand new RSL XDR™ series (extended dynamic range) proprietary DSP amplifier design, delivers even more peak and continuous power than ever before – 400 watts RMS with 1020 watts peak. The XDR™ amplifier now offers selectable dual mode DSP for a more optimized movie and music experience. Select movie mode (LFE) to use the MKII’s extra power for deeper bass extension and higher output. Music mode sets the performance to match the original 10S performance but with more power and greater dynamics. A new rear-vented Compression Guide™ tuning achieves the same class leading performance but with reduced air restriction and port noise.
CUSTOMER TESTIMONIALS
BY THE MOST DISCERNING AUDIOPHILES


WRITE YOUR OWN REVIEW


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SPECIFICATIONS
Speedwoofer 10S MKII
(1 included)


- Frequency Response:
- MKII/LFE mode (anechoic): 22-200 Hz ± 3db
- MKII/LFE mode (+ room gain): ~18-200 Hz ± 3db (varies with room size)
- Woofer:
- 10” 400+ watt rated woofer
- 4 ohm nominal Impedance
- Die-cast aluminum frame
- High-Excursion FEA optimized design motor structure
- 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
- High yield fatigue-resistant Nomex™ spider
- Kevlar™ reinforced paper cone with full anodized aluminum dust cap
- High durability NBR surround
- High duty cycle flexible tinsel lead wire with strain relief feature
- Enclosure:
- Rear-vented Compression Guide™ tuning
- Integrated cross-bracing reinforcement
- ¾” thick MDF woofer panels
- Laminated 1” front woofer baffle
- Removable cloth grille
- XDR Series Amplifier:
- 400 watts RMS < 1% THD
- 1020 watts peak
- Selectable dual-mode DSP – LFE/Music
- 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: ~0.5 watts
- Power Input: Selectable 110/230VAC 50-60Hz switch
- Low EMI design, CE & C-Tick compliant
- Line level RCA inputs and RCA pass-through signal outputs
- Speaker level binding post inputs
- Chassis ground screw
- Wireless Pairing Button: Integrated 2.4GHz wireless receiver compatible with RSL AT-3 & AT-4 Transmitters
- Crossover Frequency: 40-200 Hz variable
- 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: 15 1/2” W: 15” D: 15 3/4”
- Weight: 40.6 lbs
- Shipping Dimensions: H: 20” W: 20” D:20”
- Shipped Weight: 48.6 lbs
- Fuse: 115V (T5.0AL/250V) – 230V (T2.5.0AL/250V)