Parts for the Quad ESL 63 - Page 2 - 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 9th February 2003, 08:46 PM   #11
diyAudio Member
 
Audiofanatic's Avatar
 
Join Date: Oct 2002
Location: The Netherlands, Utrecht
Hi Hans,

I live in the Netherlands and have a friend that has two type of Mylar foil, 4 and 6 micron and can send it to you by mail. The 4 micron is 80cm wide and the 6 micron is 100cm wide! Both original Dupont Mylar.(transparent) For more information take a look at www.eslcircuit.nl at DIY and materials!

Good luck! I know you will succeed, cause he even send foil and coating to guys in china, polland etc.

AF.

Martin-Jan Dijkstra

Name: Martin-Jan Dijkstra
E-mail: mj-dijkstra@zonnet.nl
Homepage:
Address: Netherlands
Tel:
Fax:
In our search for the perfect membrane for ESLs, we were able to get custom made, tensilized Mylar. We have two different types of Mylar®:

Mylar® , thickness: 4 micron, width: 80 cm
Mylar®, thickness: 6 micron, width 100 cm
This Mylar® can easily be coated with our specially developed high resistance and fully transparent coating.

Prices

Product Price
Mylar® 4 micron € 3,50 /meter
Mylar® 6 micron € 3,00 /meter
Coating € 11,50 /100 ml

Package and transfer: € 7,00 within the Netherlands. Outside the Netherlands but within Europe: € 17,00

http://www.audiocircuit.com/9041-esl...041IMAI-DI.htm
__________________
Be nice to animals.
  Reply With Quote
Old 9th February 2003, 08:48 PM   #12
diyAudio Member
 
Audiofanatic's Avatar
 
Join Date: Oct 2002
Location: The Netherlands, Utrecht
Hans,

www.eslcircuit.nl does not work! My mistake!

AF!
__________________
Be nice to animals.
  Reply With Quote
Old 10th February 2003, 08:27 AM   #13
Buhl is offline Buhl  Denmark
diyAudio Member
 
Buhl's Avatar
 
Join Date: May 2002
Location: Aalborg, Denmark
Default Rescue of the Quad....

Hi Audiofanatic & Ignatz

Thnx for the replys - seems that testing the High Voltage Diodes will be a good place to start, so I will try that soon.
I have just come home from a prolonged vacation in the french alpes, so i have not had the time to work on the speakers before now.

Ignatz - for 6 KV, what should the diodes have as a safe rating - anything above ??

Audiofanatic - will the eslcirciut bee up again ??


Thanx again for your time.....


Cheers !
Hans
  Reply With Quote
Old 10th February 2003, 05:23 PM   #14
diyAudio Member
 
Join Date: Oct 2002
Location: pittsboro, NC
Click over to:
http://www.quadesl.com/quad_main.shtml

he has a good write up about how to referb the diodes. Look under the "references" section and then "my Rectifier Block Design". He is using 1N4007 diodes.

I will need to do mine soon.
  Reply With Quote
Old 10th February 2003, 05:45 PM   #15
diyAudio Member
 
Join Date: Apr 2002
Location: Toronto
Default high voltage diode type

I replaced 10 of the stock diodes with the following in my two sets of ESL63s.

Diodes Inc.
High Voltage Fast Recovery A567438
I also see another part number which is 20 E R3000F.
I still have 5 spares.

These diodes have been working great since their installation about 10 years ago. They are much smaller in size than the original stock diode.

I think any high voltage diode will work because the diodes are in series so the maximum voltage they see is about 1,000 volts rather than the full 6,000 volts to panels.

Good luck
  Reply With Quote
Old 11th February 2003, 08:13 AM   #16
Buhl is offline Buhl  Denmark
diyAudio Member
 
Buhl's Avatar
 
Join Date: May 2002
Location: Aalborg, Denmark
Default High voltage diodes

Hi Ignatz

Ok, I have searched my local dealers website, and have come up with this diode:

25BY584 BY584 ENSRETTERDIODE 1.8KV/85mA


It is 1800volts, and 0,085A - this should be enough current as well as voltage (when in series) ?

I take that the diodes that should be changed is 8 pr. speaker, named D3-D10 on this drawing:

http://www.quadesl.com/schematics/quad63_schematic.gif


Cheers !

/Hans
  Reply With Quote
Old 11th February 2003, 11:50 AM   #17
diyAudio Member
 
Join Date: Apr 2002
Location: Toronto
Default High voltage diodes

Buhl:

Your choice of diode should be O.K. as the amount of current required is very very low. In fact you will not be able to measure the voltage in this circuit with a normal high quality metre as it will drain the small current off immediately.

If I remember correctly I do not think you can measure whether the diodes are O.K. with a metre unless you put a bit of high voltage through them. I replaced all 8 at once.

The resolution on your schematic is very poor.
I can not make out any text, but I think you have the correct location of the diodes.

Replace the diodes which run in series between the 4 diode bridge which connects to the HV transformer the other end which connects to the neon bulb.
There should be 8 high voltage capcitors as well, one for each diode.

You might also want to check the four diodes in the bridge.
I have never had a problem with these diodes.

Place the little daughter board in a tin foil pan and gently heat it so that the wax just starts to melt. Then you will have the wax to re-pot the board.

Good Luck
  Reply With Quote
Old 21st September 2004, 07:14 PM   #18
diyAudio Member
 
Join Date: Sep 2004
Location: Santa Fe, NM
Question Diode search

Ignatz,

Thanks for the info on diagnosing dead diodes in a Quad ESL-63. I denfinitely have an "always on" neon lamp on the EHT board.

Now I'm having a hard time trying to find replacement diodes.

The Service Manual specifies 1AV30 (1JK30) diodes. The only place I can find these online is a UK Vendor. I'd definitely prefer a U.S. vendor.

On http://www.quadesl.com/quad_ref.shtml Sheldon Stokes specifies 1N4007 diodes on his New rectifier board. But that is a different circuit design with a different number of diodes. So, I don't know if the 1N4007 is a suitable replacement.

I've also tried to find the diodes suggested in other posts, but I'm getting a little tired of "user-surly" electronics parts websites.

Does anyone have the specs for a 1AV30 diode, and/or know the design requirements for the diode in the original EHT board?

Thanks,
Tim
  Reply With Quote
Old 25th September 2004, 10:28 AM   #19
405man is offline 405man  Scotland
diyAudio Member
 
Join Date: Dec 2003
Location: South Lanarkshire near Glasgow Scotland
Should you need panels rebuilt I have found Onething

Audiohttp://www.quadesl.org/Parts/One_Thing/one_thing.html

To provide an excellent service and are always very helpfull and informative. New panels were available from Quad last year but are now £200+

Stuart
  Reply With Quote
Old 24th November 2004, 01:04 PM   #20
Buhl is offline Buhl  Denmark
diyAudio Member
 
Buhl's Avatar
 
Join Date: May 2002
Location: Aalborg, Denmark
Default Still problems

Now, I have changed the high voltage diodes on the voltage multiplier board, but there are still difference in sound level and frequency, one of them beeing loower, and with less treble.
I have tried to check for dead panels, even with a vacumcleaner tube at my ear, so I can narrow the source, but all panels seem to work.

The flash diode goes off every 5-7 sec. on the faulty speaker, and about every second on the "good " one.

One mentioned something about cleaning the panels with a brush on the vacumcleaner - is this done without disassembling the panels ?

How about bad solderings ? - i mean, there are higt frequency, but not as much as the other - could it be that some of the rings does not get hte signal from the delayboard ?

Cheers !

Hans Houmøller
  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
FS- Quad ESL-63 frame parts I_Forgot Swap Meet 4 13th June 2010 10:58 AM
Quad 34 - parts clarification johnm Solid State 23 16th March 2010 04:35 PM
WTB: RGR Model IV parts or parts unit dnewma04 Swap Meet 2 1st January 2010 09:00 PM
PARTS PARTS PARTS!!! Infocus Powerview 820, triplet, ballast, light, power supply!!! marioinla Swap Meet 1 31st August 2004 04:22 PM


New To Site? Need Help?

All times are GMT. The time now is 05:13 PM.


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