Infinity Modulus MSW-II 12″ Powered Subwoofer – 600W Peak

Infinity Modulus MSW-II 12″ Powered Subwoofer – 300W RMS, Silver

The Infinity Modulus MSW-II is a high-performance 12-inch powered subwoofer designed to anchor Infinity’s Modulus II home theater system, combining a 300-watt RMS amplifier, a CMMD ceramic-cone driver, and the proprietary R.A.B.O.S. room optimization system in a compact, silver-trimmed enclosure. This example is in very good condition and has been fully tested to confirm strong, clean output and proper operation of all controls.

At the heart of the MSW-II is a 12″ CMMD (Ceramic Metal Matrix Diaphragm) woofer — the same driver material Infinity employed in its higher-end reference lines — driven by a dedicated 300-watt RMS (600-watt peak) internal amplifier. The sealed-box, magnetically shielded cabinet focuses on accurate, low-distortion bass rather than exaggerated output, delivering a rated frequency response of 27 Hz to 100 Hz (±3 dB) — genuine deep bass that extends well below most program content.

R.A.B.O.S. (Room Adaptive Bass Optimization System) is among the MSW-II’s most practical features: it provides parametric EQ adjustment that allows the user to identify and tame the primary bass resonance of their room, producing tighter, more natural low frequencies rather than the bloated one-note bass that afflicts many rooms and subwoofers. The crossover is fixed at 100 Hz (12 dB/octave), integrating cleanly with most small satellite and bookshelf speakers. The silver / platinum finish with complementary trim was designed to match the Modulus II satellite and center speakers, but it looks equally at home alongside other brands in a modern or vintage home theater setup.

Key Specifications – Infinity Modulus MSW-II:

Driver: 12″ CMMD (Ceramic Metal Matrix Diaphragm) magnetically shielded woofer

Amplifier power: 300 W RMS / 600 W peak

Frequency response (±3 dB): 27 Hz – 100 Hz

Crossover: Fixed 100 Hz, 12 dB/octave

Room EQ: R.A.B.O.S. (Room Adaptive Bass Optimization System) parametric EQ

Enclosure: Sealed, magnetically shielded

Finish: Platinum/silver

Dimensions (H × W × D): 16¾” × 14½” × 18⅛” (425 × 368 × 460 mm)

Weight: 44 lbs (20 kg)

Cosmetic condition:
This silver MSW-II is in very good cosmetic condition. Cabinet and trim show only light signs of careful home use, with no significant dents, scratches, or damage. All controls, connections, and indicators are clean and fully functional, and the unit has been thoroughly tested to confirm proper amplifier operation and strong, controlled bass output.

A substantial, CMMD-driven Infinity Modulus MSW-II delivering 300 W RMS with genuine 27 Hz bass extension and R.A.B.O.S. room optimization — a serious powered subwoofer for enthusiasts seeking accurate, deep bass from a proven Infinity design.

Backed by Radique Audio’s 90-day warranty and our perpetual trade-back policy, you can purchase with confidence.