MARTIN LOGAN BALANCEDFORCE 212

Two 12-inch drivers, leading-edge technology and a unique force-canceling driver configuration yield deep, powerful, yet controlled bass that perfectly complements all speakers.

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Ultimate Subwoofer Performance
BalancedForce™ subwoofers are the realization of years of engineering
by the MartinLogan team combined with the latest innovations in advanced
Digitial Signal Processing (DSP), amplification, electrical system designs and
room correction (PBK). They are specifcally 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
MartinLogan.com) 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 tBalancedForce™ 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

» Tekniske data

Frequency Response
18–120 Hz ± 3 dB. Anechoic through the LFE effects input.
Low Pass Filter Frequencies
30Hz–80Hz
Phase
0°, 90°, 180°, 270°
25Hz Level Control
± 10 dB
Power Control
On, Auto (12V Trigger), Off
Room Correction
Perfect Bass Kit (PBK) Ready (sold separately)
Woofers
2 x 12” (30.5 cm) cast-basket, high excursion, aluminum cone with
extended throw driver assembly, sealed non-resonant asymmetrical
chamber format
Amplifiers
2 x 850 watts RMS (3,400 watts peak system total)
Impedance
Left & Right/LFE RCA: 20,000 Ohms
Inputs
RCA: Left, Right and LFE.
XLR: Left, Right and LFE.
Speaker Level: Left and Right banana jacks.
12V Trigger: 3.5mm.
Mini USB: for PBK
USB: for crossover & firmware updates
Output (RCA)
Multi Out (for multi-sub connection)
Input Impedance
RCA: 10k Ohms
XLR: 15k Ohms per phase
Speaker Level: 10k Ohms per phase (20k Ohms red to black)
Power Draw
Typical: 250 Watts; Idle: 30 Watts
Cabinet
Sealed
Weight
63.5 kg
Size (H x W x D)
57.4cm H x 57.4cm W x 58.2cm D

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