Q Acoustics Concept 300 LOUDSPEAKER
When I performed the measurements of the Q Acoustics Concept 500 loudspeaker to accompany Thomas J. Norton’s review in March 2019,1 I was impressed by what I found. The floorstanding Concept 500 offers a high level of audio engineering excellence for its price of $5999.99/pair. When I attended a Q Acoustics press briefing a few months back, where the English company announced the US availability of their stand-mounted Concept 300, I didn’t hesitate to ask for a pair to review.
A large sprung plate on the enclosure’s base couples to the top plate of its Tensegrity stand.
Design
The Concept 300 costs $4499.99/pair, including a pair of unique stands: skeletal, 26"-tall Tensegrity supports, each with three tubular stainless-steel legs, pretensioned with wires. A small platform at the top of the tripod formed by the legs engages with a sprung plate in the speaker’s base; more on that later.
The Concept 300 is a fairly large two-way design, deeper than it is high. A 1.1" (28mm) tweeter, using a dome fabricated from “super-fine strands of coated microfiber,” is mounted above a 6.5" (165mm) woofer, this featuring an impregnated/coated paper cone, a rubber surround, and a glass-fiber voice-coil. The tweeter is mounted to the baffle with a rubber gasket to isolate it from vibrations from the woofer, and its front plate has a shallow waveguide profile. Both drive-units are fastened from behind, using spring-tensioned retaining bolts. The woofer is reflex-loaded with a
