More Power. Deeper Bass. Greater Control.

The Speedwoofer 10S MKII builds on the legacy of the original Speedwoofer 10S - our most popular subwoofer platform - and elevates it with more power, deeper extension, and enhanced dynamic performance; delivering a subwoofer that feels stronger, more responsive, and more versatile.

At its core is RSL’s XDR™ (Extended Dynamic Range) DSP amplifier, delivering 400 watts RMS and over 1000 watts peak power for increased headroom and effortless output . The result is bass that hits harder, reaches deeper, and maintains control even at higher listening levels.

The 10S MKII is ideal for:

Medium to large living rooms and media spaces
Dedicated music and home theater systems
Enthusiasts who want even more output and deeper bass than 10E
Discerning audiophiles, who may also need speaker level connections

The 10S MKII strikes the perfect balance between size, power, and performance.

Features:

400 watts RMS / 1020 watts peak
Cast-frame 10” woofer w/ improved thermal capacity
LFE mode offers deeper extension (22Hz!)
Music mode matches original 10S w/ improved dynamics
Rear-vented Compression Guide™ tuning
Wireless receiver built in. Option to add transmitter during checkout*
Black 10S MKII includes black grille / white 10S MKII now includes heather gray grille

Terms & Conditions:

Free shipping within the 48 states! Discounted international shipping available.
Factory new Speedwoofers include a 30-day in-home trial period.
- $50 return fee applies per 10S MKII from the 48 states. (measure your space!)
Cancellations must be requested prior to shipping. A 3.5% cancellation fee will apply.

White Speedwoofers now include heather gray grilles (white available separately)

GROUPING - Power Buy: 10S MKII

Speedwoofer 10S MKII