Understand that

Planar Speaker Asylum

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In Reply to: Where does that resonance come from? posted by 13th Duke of Wymbourne on February 12, 2017 at 14:54:18:

virtually all full range planars have to address an inherent diaphragm resonance in some way or another. Acoustat's approach was to glue felt sheets across approximately one-third the rear panel area.

Sound Lab takes a completely different approach. The single sheet diaphragm is affixed to a grid of flat cells having a progressively different height thus distributing and canceling the resonance.

I think Quad goes for a felt damping approach similar to Acoustat. If the felt gets loose, then the resonance becomes obvious.

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Follow Ups Full Thread

Topic - Just measured my quad 57's in my 10x 12 man cave - fin1bxn@msn.com 13:00:41 02/11/17 (7)

RE: Just measured my quad 57's in my 10x 12 man cave - Satie 12:36:36 02/12/17 (5)

Where does that resonance come from? - 13th Duke of Wymbourne 14:54:18 02/12/17 (4)

Understand that - E-Stat 13:32:50 02/13/17 (0)

RE: Where does that resonance come from? - Satie 19:41:26 02/12/17 (2)

Thanks nt. - 13th Duke of Wymbourne 12:34:15 02/13/17 (0)

RE: not unlike "baffle step" correction - BigguyinATL 07:27:31 02/13/17 (0)

RE: Just measured my quad 57's in my 10x 12 man cave - neolith 18:00:51 02/11/17 (0)

Follow Ups

Understand that - E-Stat 13:32:50 02/13/17 (0)

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