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Martin Logan Subwoofer
Martin Logan Subwoofer 0
Martin Logan Subwoofer 1

Martin Logan Subwoofer

Model #: BalancedForce 212
Martin Logan
At a Glance
Martin Logan Subwoofer with top mounted control interface and sealed cabinet enclosure
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Get to know this product.

Ultimate Subwoofer Performance
BalancedForce™ subwoofers are the realization of years of engineering by the MartinLogan team combined with the latest innovations in advanced Digital Signal Processing (DSP), amplification, electrical system designs and room correction (PBK). They are specifically designed to blend with Electrostats without diminishing the wondeful electrostatic snap and midrange clarity. A true no-compromise subwoofer – regardless of application. The most important ahievement in the all-new BalancedForce 212 is driver configuration (yes, that’s where we derived the name!). Two identical 12-inch drivers – high-performance, high-excursion aluminum-cone woofers – are mounted at a “balanced” 180 degrees apart from each other in the cabinet. As a result, their reaction force vectors exactly cancel, virtually eliminating cabinet resonance and vibration. Gone with them are the cabinet-radiation coloration and bass blur that afflict even the best conventional subwoofers.
A New Level of Flexibility to System Integration
BalancedForce 212’s advanced electrical control system brings new levels of flexibility to system integration, allowing listeners to install speaker-specific custom low-pass filters to assure a perfect  match with MartinLogan speakers. Installation is simple - download a custom filter (FREE from and save it on a USB thumb drive. Insert the drive in the subwoofer’s USB input, and the DSP takes care of the rest! Not using MartinLogan speakers? No problem. BalancedForce 212’s robost control system allows the user to dial in the low-pass frequency, phase, and level to match the user’s unique requirements. 
BalancedForce 212 Features Include:
  • Rigid, Low-Mass Aluminum Element Woofers
  • Dual 12-inch BalancedForce™ Woofer Alignment
  • PBK Room Correction (sold separately) and Built-In 25Hz Level Control
  • Custom Low-Pass Filters For Specific Individual Loudspeaker Models
  • Two Proprietary High-Power Amplifiers Delivering a System Peak of 3400 Watts
  • Simultaneous LFE and 2-Channel Connection (via RCA, XLR, and Speaker Level Inputs)
  • Sealed Cabinet Enclosure
  • Top Mounted Control Interface
  • Tone Sweep to Help Identify Room Rattles and Resonances
  • 12-Volt Trigger Control
  • ETC™ (Energy Transfer Coupler) Spikes
Useful Documents


Woofer Composition:Aluminum Cone


Sold As:Each


Color:Black; Dark Cherry

Misc. Specs

Product Weight (lbs.)140
Depth (in.)22.9
Width (in.)22.6
Height (in.)22.6
Woofer Size12
Maximum Power Handling (Watts)250
Speaker Size12
RMS Power Handling (Watts)250
Subwoofer Size12
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