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Infinity Qb

Three Way Loudspeaker System (1977)

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Infinity Qb


Type: 3 way, 3 driver loudspeaker system

Frequency Response: 42Hz to 32kHz

Recommended Amplifier: 15 to 150W

Crossover Frequency: 600, 4000Hz

Bass: 1 x 250mm

Midrange: 1 x 100mm

Tweeter: 1 x liquid cooled EMIT

Grille: light fabric, removable

Finish: birch wood vinyl veneer

Dimensions: 630 x 370 x 300mm

Weight: 19.5kg


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Reviewed Jun 10th, 2019 by Theodor Nørby-Lassen

Incredibly muscial, and open sounding speakers. They are a bit lacking in the mid frequencies but do incredibly well in highs and lows. Lows have good punch and depth. Highs have superb clarity. I love listening to these. Put them, if possible, at ear level

Reviewed Mar 07th, 2017 by 1marcg

Tweeter is bright but ok, better than modern soft dome tweeters on todays modestly priced boxes (Dali zensor 3 etc.)
Mid driver is week. Probably in need to replace capacitors after 40 years of service.
Bas is good. Suspensions are still ok but I could replace it just for the sake of hearing the diference between old and new suspension. Not the flattest speaker arround but musical. I use them on a home-made stands.

Reviewed Nov 12th, 2015 by jim

Very high quality drivers with good crossover Emit tweeter does a good job with the high end.
Well balanced sound– drivers have rubber surrounds for no foam rot. Sound best on stands with tweeters at ear level.

Reviewed Sep 25th, 2015 by jumpstartbill

Owned the same pair since 1979. The only component failures were due to stupidity (driving too hard). Very natural sound. Have to move up to the Infinity tower to go better.



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