Stacked Quad ESL 57 - Page 5 - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 3rd February 2014, 05:36 PM   #41
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Quote:
Originally Posted by Unison845 View Post
How much does it cost to rebuild a pair of ESL57? Why arching is no longer a concern? Is it duetu adding protection circuit?
contact the other Wayne ..

Welcome - Quads Unlimited
  Reply With Quote
Old 3rd February 2014, 09:11 PM   #42
diyAudio Member
 
Join Date: Apr 2004
Location: California
My bronze Quad SN dated 1960, my black one dated 1982. Both are in great condition, the panels looked fine too. None of them has protection circuit, all my single ended amp 6C33C/845/211/GM70/WE212E are below 25W, so I think they will be fine. Some day when I have time , I will put protection circuit on them.
__________________
Unison845
  Reply With Quote
Old 4th February 2014, 06:08 PM   #43
diyAudio Member
 
Join Date: May 2006
Location: Netherlands
Quote:
Originally Posted by a.wayne View Post
Arching only happens on old panels, have the panels rebuilt by a competent person and arching is a thing of the past, no need for clamping ...
Do you have any evidence or arguments to support that theory? Because I don't think there is anything you can do to prevent these panels from arcing once enough voltage is applied.

From the top of my head Quad specified maximum of 33 Volts input before arcing. The Quad 303 amplifier was limited to that voltage and it will not blow up a treble panel that is in good condition. You go higher than that without a limiter in place and the thing *will* arc at some point.

@Unison845 what amp did you like best on the Quads? I have good memories about a GM70 SE amp driving those Quads.. just magic.
__________________
my Quad ESL website.
  Reply With Quote
Old 5th February 2014, 05:56 AM   #44
diyAudio Member
 
Join Date: Apr 2004
Location: California
All my amps use different input/driver/tube/transformer, the power supply is identical though. The stacked quad has additional Janszen panels for the highs. The amp that I tried on this system are 845/211/GM70/WE212

The stacked quad/Janszen system are so revealing that the sound of each amp is dependent on what you feed into it. My analog player is Micro Seiki 1500 with 4 different arm and cartridge combination. The Phono preamp is Aesthetix IO with dual supply drive the amp which has volume control at the input. I have found that certain cartridge/amp combination sounded better than other.

For casual listening I used GM70 amp since the tubes are cheap and sounded quite good. For serious listening I used the WE212, I dont want to put mileage on this tube because they are expensive to replace. For classical music I like 211. For jazz I like 845.

Yes the GM70 tube is very good, it has a warm sound but the high is a bit roll off. But then I did not tried the copper plate version yet, from what I heard when compare 845 graphite/ 845 metal tube, I am very tempted to buy the copper version.

So my conclusion here does not mean that any of the tubes are superior in sound compared to other, since they are built so different from each other, with different interstage/output transformer (845/Tango, 212/Tango, 211/Tamura, GM70/James).


Quote:
Originally Posted by arend-jan View Post
Do you have any evidence or arguments to support that theory? Because I don't think there is anything you can do to prevent these panels from arcing once enough voltage is applied.

From the top of my head Quad specified maximum of 33 Volts input before arcing. The Quad 303 amplifier was limited to that voltage and it will not blow up a treble panel that is in good condition. You go higher than that without a limiter in place and the thing *will* arc at some point.

@Unison845 what amp did you like best on the Quads? I have good memories about a GM70 SE amp driving those Quads.. just magic.
__________________
Unison845
  Reply With Quote
Old 5th February 2014, 07:14 PM   #45
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Quote:
Originally Posted by arend-jan View Post
Do you have any evidence or arguments to support that theory? Because I don't think there is anything you can do to prevent these panels from arcing once enough voltage is applied.

From the top of my head Quad specified maximum of 33 Volts input before arcing. The Quad 303 amplifier was limited to that voltage and it will not blow up a treble panel that is in good condition. You go higher than that without a limiter in place and the thing *will* arc at some point.

@Unison845 what amp did you like best on the Quads? I have good memories about a GM70 SE amp driving those Quads.. just magic.
I should have been more specific with my previous response, yes you are correct if you want to arch the panels you can , what i meant to say, was when the panels are rebuilt and modified , arching takes place at a much higher level of drive. The arching in original 57's happens due to a defective process in their manufacturing ..
  Reply With Quote
Old 17th February 2014, 11:58 PM   #46
diyAudio Member
 
Join Date: Jan 2014
I'm kind'a new here....I've a set of dubl-stacked Quads with Decca ribbons....running them with a pair of Nobis Convigore's. The amps are based off a Dyna 70 with a fet front end, running AB with 6550's.....I kicked them up a bit. Never had an arc problem but I don't play them loud. I mainly use the system for classical and light jazz, piano, female vocals etc. Even the dubl-stacks won't do a large room,,,,but they are something quite special.
  Reply With Quote
Old 23rd March 2014, 10:07 AM   #47
diyAudio Member
 
Join Date: Jan 2014
So if I want to sell my quads....where is a good place to list them?
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stacked pair of Quad ESL 57 arend-jan Planars & Exotics 61 4th January 2014 07:48 AM
Quad ESL 57 panels? Simon T Planars & Exotics 5 8th February 2012 06:09 AM
Quad ESL 57 connection discurio Planars & Exotics 3 20th April 2011 02:25 AM
QuAD ESL 57 Question dude007 Planars & Exotics 30 5th March 2010 07:45 PM
Quad ESL-57 (pair) TimA Swap Meet 2 14th November 2005 11:34 AM


New To Site? Need Help?

All times are GMT. The time now is 06:36 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2