Go Back   Home > Forums > Commercial Sector > Swap Meet

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

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 23rd July 2004, 11:30 PM   #1
diyAudio Member
 
Join Date: Feb 2003
Location: CA
Default zen v4 PCB needed

If someone of you have those PCB and doesn't need them, I would gladly buy them. I'm interested in ZEN amp v4, both channels. I know I could get them at passdiy but I try here first. Expecting nice price

Thanks

thomi@speakeasy.net
  Reply With Quote
Old 24th July 2004, 05:41 PM   #2
diyAudio Member
 
kilowattski's Avatar
 
Join Date: Aug 2003
Location: Long Island, New York
If I were you I would just purchase it from Pass Labs. You won't save enough money to justify the wait for one to become available here, if one ever becomes available. Even if it did, you will only save $5 or $10. Nobody is going to give it away.
__________________
-----------------------------------------------
Kilowattski
  Reply With Quote
Old 24th July 2004, 07:51 PM   #3
diyAudio Member
 
Join Date: Feb 2003
Location: CA
Yeap I made same conclusion and I'm going to buy them from PASSDIY.
However it would be good to get some IRFP044. They offer it also at PASSDIY but this time I think it's a little overpriced. Unless they put some effort to match devices.
  Reply With Quote
Old 25th July 2004, 08:50 AM   #4
diyAudio Member
 
kilowattski's Avatar
 
Join Date: Aug 2003
Location: Long Island, New York
Yup, if you buy the Pass Labs Q pack, the transistors are matched, probably to much tighter tolerances than you or I can achieve. The Q pack includes (10) 1N4739 zener diodes, (6) matched IRFP044's, the silpat transistor insulators for the IRFP044's, (2) 1N4004 diodes, (2) ZTX450 bipolar transistors and (2) ZVP3310 mosfets. Not a bad deal for 50 bucks. It could cost you more than $50 just to match two sets of 3 transistors. Like I said before, nobody gives it away. This is, after all, high end audio.



PS: It's a nice amp to build. Build it properly and it will work the first time. Burn it for a while, set the bias and you are all set. I think it has a sound flavor similar to the Aleph 3. Here are some pictures of my Zen V4 during the build process.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
__________________
-----------------------------------------------
Kilowattski
  Reply With Quote
Old 25th July 2004, 02:59 PM   #5
diyAudio Member
 
Join Date: Feb 2003
Location: CA
Hey, Kilowattski
This is one piece of good job you've got there. I wish I could do such a masterpiece. I think you wouldn't mind if asked what kind of trafos you use? What is the secondary voltage ? What are those nice big caps ?
Did you measure temp of heatsink after full warm up ? I wanted to go with smaller ones (half of yours) but looking at your photos I just can't decide

Thanks

P.S. I didn't realize that Q pack is more than only Q devices. It seems to be a good deal, ..." This is, after all, high end audio. "....
Hope it doesn't require high-end money
  Reply With Quote
Old 25th July 2004, 10:44 PM   #6
diyAudio Member
 
kilowattski's Avatar
 
Join Date: Aug 2003
Location: Long Island, New York
The heat sinks came from M&M Metals. Their website is http://www.mmmetals.com. The heatsinks were about $120. Don't forget that each channel has to dissipate 100 watts. My heatsinks get to about 45 degrees C at their hottest. The transformers came from Coil Winding Specialists. Their website is http://www.coilws.com. I used P/N PT-110-325-218 at $50 each. The transformer has (2) 18v secondaries at 9 amps each giving you 36v @ 9 amps when putting the windings in series. The transformer gives me almost exactly 50 vdc under load. The capacitors are Nipon Chemicon 63000uF at 63v. I bought the 4 of them off ebay for $15.
__________________
-----------------------------------------------
Kilowattski
  Reply With Quote
Old 26th July 2004, 01:31 AM   #7
diyAudio Member
 
Join Date: Feb 2003
Location: CA
Thanks for the info !!!
  Reply With Quote
Old 26th July 2004, 05:55 AM   #8
jajabin is offline jajabin  United States
diyAudio Member
 
Join Date: Jun 2004
Location: CA
Hi Kilowattski,

Did you buy the whole chassis from M&M Metals?


Thanks
Wing
  Reply With Quote
Old 27th July 2004, 02:24 AM   #9
diyAudio Member
 
kilowattski's Avatar
 
Join Date: Aug 2003
Location: Long Island, New York
No, I built it, but you are perceptive in that the chassis was built around the heatsinks. A friend and neighbor owns a machine shop. He taught me how to operate a Bridgeport Milling Machine and let me use it on Saturdays. I basically came up with a design on AutoCad and fabricated the chassis over about 10 Saturdays. I have been lazy though, because the project is virtually done. The heatsinks need to go to the anodizer and the rest of the chassis needs to go to the powder coater. I just can't bring myself to take it out of the system for a long time to get this done. With efficient speakers it sounds sweet.
__________________
-----------------------------------------------
Kilowattski
  Reply With Quote
Old 27th July 2004, 03:41 AM   #10
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
That is some superb Chassis work.. soon to have posted some photo's of mine : O )
  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
Help needed ! Inter M R300 schematics needed ! alexclaire Solid State 30 9th September 2009 06:14 AM
LT1964-adj Help Needed or Part Needed lgreen Parts 2 29th June 2007 02:50 PM
PSU Help Needed ardo Power Supplies 4 26th June 2006 05:15 PM


New To Site? Need Help?

All times are GMT. The time now is 09:34 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