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RE: Clarification of terms on Quad ESL-63s and their progeny

Posted by cawson@onetel.com on March 5, 2017 at 12:32:44:
> Aren't peoples' references to "bass panels" in the later Quads simply incorrectly informed? Or am I?

As I understand it (and I'm not a Quad expert), the newer big Quads (2905 and 2912) have 2 centre panels that are dedicated to mid and high frequencies and 4 bass panels - 2 above and 2 below the centre ones - that are dedicated to low frequencies. The newer smaller Quads (2805 and 2812) have just 2 bass panels. As far as I understand it, there are no crossover circuits, but how the panels know what to do remains a mystery to me!

No doubt there are Quad experts here who can offer chapter and verse. All I can say, after buying a pair of used 2905s last week is that the bass is a lot better and fuller than I was expecting. They really do offer serious wellie when called upon to do so. The twin 10" drivers in the subs of my Avantgarde horns give more grunt still but not with more delicacy.