In Reply to: Actually, that is not correct posted by E-Stat on July 24, 2012 at 06:50:14:
The description of the original ESL is not absolutely correct.
Something like the KLH-9 used three different drivers covering three discreet ranges. A true 3-way system.
The Quad ESL is not exactly the same even with its multiple panels. The central strip of the ESL runs essentially full range. The strips that flank either side of the central strip roll off the top with a series resistor and full range other wise. What we call the 'tweeter' panel is in fact an essentially full range panel. But it does not have enough surface area to produce adequate bass response.
Add the additional bass panel to reinforce the bottom of the range. The inductance of the transformer rolls of the required topend of the bass panels.
The Quad is a 3-way in a sense. But not really. At least not the classic definition of that term. It is really closer to stats like the Stax F-81, Audiostatics or the late Acoustat Spectra series.
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Follow Ups
- RE: Actually, that is not correct - kentaja 09:28:09 07/24/12 (5)
- The Janszen designed KLH is a two way - E-Stat 10:54:22 07/24/12 (4)
- RE: The Janszen designed KLH is a two way - kentaja 09:24:44 07/25/12 (1)
- If memory serves... - E-Stat 09:41:41 07/25/12 (0)
- The only Sound Labs... - mkuller 20:49:26 07/24/12 (1)
- Bass capability is all about panel area - E-Stat 08:36:42 07/26/12 (0)