RE: all of them wired in parallel - yes

Posted by kentaja (M) on October 16, 2023 at 06:04:58

In Reply to: RE: all of them wired in parallel - yes posted by 6bq5 on October 13, 2023 at 10:26:40:

Every original Quad should be equipped with the protection circuit this will prevent arcing no matter the output of the amp. Cheap, easy to install and has no sonic impact. Kind of a no brainer.

The impedance at 100Hz is well above 2 ohms more like 30-40 ohms. It is at 20kHz that it drops to 1.9 ohms as I recall. Its impedance curve is the typical electrostatic roller coaster.

Maximum SPL is well above 88dB if working properly. We easily achieve 100dB levels C-weighted. Stack them 4 high? We are in horn territory in terms of maximum SPL and efficiency.

The bump at 80-90Hz is quite small perhaps a couple dB. It will of course be compounded when stacking just one of several reasons why I not a fan of stacking. Pluses for sure when stacking but also some minuses. No free lunch here.

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Follow Ups Full Thread

Topic - Questions of stacked four Quad ESL-57 - pushpulltriode 06:53:39 10/13/23 (24)

RE: Questions of stacked four Quad ESL-57 - kentaja 08:45:41 10/15/23 (0)

RE: Questions of stacked four Quad ESL-57 - hahax@verizon.net 20:47:16 10/13/23 (0)

RE: Questions of stacked four Quad ESL-57 - David Yost 15:25:02 10/13/23 (10)

And... - grantv 22:36:51 10/13/23 (9)

RE: And... - David Yost 02:11:13 10/14/23 (8)

RE: And...another - David Yost 02:15:34 10/14/23 (7)

That's about the diaphragm area - E-Stat 06:22:59 10/16/23 (3)

RE: That's about the diaphragm area - kentaja 14:47:20 10/16/23 (2)

I was being generous - E-Stat 14:57:57 10/16/23 (1)

RE: I was being generous - kentaja 15:12:52 10/17/23 (0)

RE: And...another - kentaja 08:47:30 10/15/23 (0)

RE: And...finally - David Yost 02:19:33 10/14/23 (1)

Thanks. - grantv 21:42:19 10/14/23 (0)

RE: Questions of stacked four Quad ESL-57 - Zombie 12:15:17 10/13/23 (2)

RE: Questions of stacked four Quad ESL-57 - pushpulltriode 08:24:09 10/15/23 (0)

RE: Questions of stacked four Quad ESL-57 - 13th Duke of Wymbourne 16:41:07 10/13/23 (0)

all of them wired in parallel - yes - Story 09:13:18 10/13/23 (6)

RE: all of them wired in parallel - yes - pushpulltriode 09:47:04 10/13/23 (5)

RE: all of them wired in parallel - yes - 6bq5 10:26:40 10/13/23 (4)

RE: all of them wired in parallel - yes - kentaja 10/16/2306:04:58 10/16/23 (0)

RE: all of them wired in parallel - yes - pushpulltriode 16:54:15 10/15/23 (1)

RE: all of them wired in parallel - yes - louie3 07:41:28 10/16/23 (0)

RE: all of them wired in parallel - yes - 6bq5 10:30:06 10/13/23 (0)

RE: Questions of stacked four Quad ESL-57 - louie3 08:40:17 10/13/23 (0)

Follow Ups

RE: all of them wired in parallel - yes - kentaja 10/16/2306:04:58 10/16/23 (0)

RE: all of them wired in parallel - yes

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