Velodyne F-1200-B Servo Controlled 12″ Active Subwoofer

Velodyne F-1200-B Servo Controlled 12″ Active Subwoofer – Fully Serviced, Working Perfectly, Very Good Cosmetics

Deliver deep, controlled bass with the Velodyne F-1200-B—a legendary servo-controlled subwoofer from the 1990s that remains a benchmark for tight, musical low-end reproduction. Professionally serviced and working perfectly, this unit is in very good cosmetic condition and ready to anchor any serious audio or home theater system.

The Velodyne F-series represented the pinnacle of servo-controlled subwoofer technology for its era. The servo accelerometer feedback system continuously monitors driver movement and applies real-time corrections, virtually eliminating distortion and lag—resulting in bass that is exceptionally fast, tight, and accurate. Music lovers praise Velodyne’s servo designs for their musicality and precision, making them equally at home with vinyl jazz and orchestral recordings as with movie soundtracks.

This cubic enclosure houses a 12-inch long-throw driver powered by a 100-watt Class A/B amplifier in a sealed-box design that extends down to 20Hz with authority. The servo control delivers output that rivals modern subwoofers with far more amplifier power—a testament to Velodyne’s elegant engineering and the efficiency of proper servo feedback. Adjustable crossover frequency (40–200Hz) and phase control allow perfect integration with any speaker system.

Service Work Completed:

All potentiometers and control circuits cleaned with DeoxIT

Amplifier stage inspected and verified for proper operation

Servo feedback system tested and confirmed operational

Driver and enclosure integrity verified

RCA and speaker-level inputs tested

Complete functional testing across all frequencies

Key Features:

12-inch long-throw driver in sealed cabinet

100W Class A/B amplifier with servo control feedback

Servo accelerometer feedback for ultra-low distortion and tight response

Frequency response: 20Hz–200Hz (±3dB)

Adjustable crossover: 40–200Hz for flexible speaker integration

Phase control switch for optimal room placement

RCA line-level and speaker-level (high-level) inputs

Compact cubic design: 16.6″ × 16.6″ × 16.6″

Heavy cast composite cabinet for rigidity and acoustic control

Black vinyl woodgrain finish, very good cosmetic condition

Fully serviced, working perfectly

Specifications:

Driver: 12″ long-throw resin/fiber cone

Amplifier: 100W RMS Class A/B servo-controlled

Frequency Response: 20Hz–200Hz (±3dB)

Crossover: Switchable 40–200Hz

Phase: 0° / 180° selectable

Cabinet Type: Sealed, servo-controlled

Dimensions: 16.6″ × 16.6″ × 16.6″ (422 × 422 × 422mm)

Weight: 55lbs (25kg)

Inputs: RCA (line-level) and speaker-level terminals

Year: 1990s

Why Audiophiles Still Love the F-1200-B:

Reviewers and owners consistently praise the tight, musical bass, clean transient response, and servo-tight control that makes this subwoofer shine with both music and film. The servo-controlled design means the F-1200-B achieves bass accuracy and distortion levels that modern budget subs struggle to match, even with higher wattage ratings. Bass is described as fast, punchy, and perfectly integrated—never boomy or one-note.

A compact (for a 12″) yet powerful foundation for your system—vintage Velodyne servo engineering at its best, asking $495 for this impressive, serviced subwoofer; buy with confidence and benefit from Radique’s “Bumper to Bumper” warranty and Perpetual trade back policy.