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Monitor Audio Silver RXW-12 (Mod) Subwoofer Monitor Audio RXW-12 Subwoofer + 1200W Class D Amplifier (DIY Passive Setup)Selling a Monitor Audio RXW-12 subwoofer that has been converted to a passive subwoofer. The original built-in amplifier at the back failed, so it was removed and the unit was modified to run with an external power amplifier.A 1200W Class D subwoofer amplifier included in the sale(solid build, about 10+ kg). I purchased the amplifier from AliExpress. The amplifier works very good with the subwoofer and has no issues driving it. It can also power two subwoofers at the same tim
Very good condition makes A$350 look like a fair-to-strong buy rather than a stretch. Similar used RXW-12 listings have shown up around A$390 equivalent, and a new-price reference in the UK lands well above that, so this asking price sits comfortably in the sensible zone for a working example.
What keeps it interesting is that the RXW-12 is a proper 12-inch Monitor Audio sub: quick, tidy, and more about controlled bass than showroom boom, which suits music systems well. If it’s complete and the amp is healthy, the upside is a solid, brand-name sub that still has real punch without paying current-new money.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Monitor Audio, a British hi-fi mainstay, traces its origins to 1972 when founder Mo Iqbal established the company in a modest factory near Cambridge, England. Starting with hands-on loudspeaker assembly in a garage-like setting, it quickly professionalized, moving to Rayleigh, Essex, in 1976 for in-house manufacturing. This heritage of meticulous British engineering has endured through expansions, including a 2004 shift of production to China while retaining design leadership in Essex, alongside strategic acquisitions like Roksan in 2016 and Blok in 2019.
The brand excels in loudspeakers across diverse categories, from high-fidelity two-channel stereo models to advanced home cinema systems, architectural installations, outdoor speakers, and lifestyle solutions. Signature innovations like the patented C-CAM Gold Dome tweeters, introduced in the 1980s and continually refined, define its sound. Complementing these are amplifiers, streamers, and integrated audio systems, reflecting a broad portfolio that prioritizes proprietary driver technologies and precise enclosure design over peripheral gear like turntables or headphones.
Positioned as a mid-to-high-end powerhouse, Monitor Audio commands respect for delivering audiophile-grade performance at accessible price points, blending relentless innovation with timeless British craftsmanship. Over five decades, it has solidified its status as a global juggernaut, appealing to discerning buyers seeking refined, dynamic sound without boutique exclusivity or vintage nostalgia.
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