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Nice pair of Infinity Q Jr. speakers. One mid-range is not functioning, which is a common issue and is factored into price. Replacements available on eBay. The cabinets are in very good condition as are the grills. Woofers, Emit tweeters, and second mid-range are all good, and the speakers sound ...
It’s a buyer’s market for vintage Infinity at the moment, and A$395 for these is fair rather than a steal. Typical asking levels I’d expect for a clean, working pair land around A$225–A$400, with especially nice examples sometimes touching A$500, so this sits near the upper end of normal but not out of line.
The appeal here is classic Infinity: lively top end, wide soundstage, and that big, open midrange that makes the Quantum line so loved by vintage fans. If the cabinets are tidy and the original drivers are all present, this is the kind of speaker that can be a rewarding long-term keep. The main thing to check is driver integrity and crossover health, since age-related issues matter more than the badge; at this price, originality and working condition should be excellent.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Infinity emerged in 1968 from a Woodland Hills, California garage, founded by Arnie Nudell, John Ulrick, and Cary Christie. Driven by Nudell's passion for classical music and innovative engineering, the trio launched with the groundbreaking Servo-Statik speaker system, featuring electrostatic panels paired with a servo-controlled woofer derived from defense technology. This American brand quickly gained traction through pioneering materials like neodymium magnets, mylar diaphragms, and polypropylene cones, establishing a legacy of pushing audio boundaries before acquisitions by Electro Audio Dynamics in 1974 and Harman International in 1983.
The company has long focused on loudspeakers as its hallmark, from early electrostatic hybrids and the iconic Reference and Kappa series to later EMIT and EMIM drivers in the 1970s. While primarily a speaker specialist, Infinity has ventured into home and mobile audio, including amplifiers and systems under Harman ownership, now part of Samsung since 2017. Turntables, DACs, headphones, and cables remain outside its core expertise.
Positioned as a mid-tier powerhouse with high-end aspirations, Infinity commands respect among knowledgeable buyers for its vintage collector appeal and enduring innovations. Once a darling of audiophiles for transparency and dynamics, it now blends accessible performance with Harman reliability, appealing to those seeking proven heritage without boutique exclusivity.
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