My latest Patek rip-off GC. - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 7th December 2003, 02:45 AM   #1
matjans is offline matjans  Netherlands
diyAudio Member
 
matjans's Avatar
 
Join Date: Aug 2003
Location: Utrecht, NL
Send a message via MSN to matjans
Default My latest Patek rip-off GC.

hello all,

I've been looking for a place to show off my newest gainclone . Couldn't really find any ongoing threads for it so I thought I'd start a new one. Well, here it is.

A blatant rip-off of a Peter Daniel "Patek" clone (hmm, a rip-off of a clone ).

Anyway, I finally understand what all the fuss about those clones is about; it sounds surprisingly good. After having built a couple of amps for testing purposes I came up with this one. Or actually, I agreed on the opinion of many other people that the following specs are pretty good.

2x Rubycon BG 1000uF 50V
1x rubycon BG 4.7uF bipolar input cap
Riken Ohm for setting gain: 22K/1K
-> I've just ordered some 22K Caddocks
Standard carbon 1W for the rest.

It's been playing for about 8 hours now and already it outperforms my previous GC's.

A few pic's.

(mods: if you guys think this shouldn't be a separate thread move it somewhere else !)
Attached Images
File Type: jpg dsc00133.jpg (41.6 KB, 2004 views)
  Reply With Quote
Old 7th December 2003, 02:46 AM   #2
matjans is offline matjans  Netherlands
diyAudio Member
 
matjans's Avatar
 
Join Date: Aug 2003
Location: Utrecht, NL
Send a message via MSN to matjans
Default 2nd pic

.
Attached Images
File Type: jpg dsc00136.jpg (58.0 KB, 1980 views)
  Reply With Quote
Old 7th December 2003, 02:49 AM   #3
matjans is offline matjans  Netherlands
diyAudio Member
 
matjans's Avatar
 
Join Date: Aug 2003
Location: Utrecht, NL
Send a message via MSN to matjans
Default 3d picture

The interior: a copper bar (heatsink) and some silver-plated copper wire. Haven't isolated the case yet but there's absolutely NO rf noise. No humming either, it's just dead quiet.
Attached Images
File Type: jpg dsc00138.jpg (48.3 KB, 1994 views)
  Reply With Quote
Old 7th December 2003, 04:50 AM   #4
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
I see, in some ways, you even improved on the original Patek concept. Well done.

From all resistors I tried, Caddocks seem to be the best for feedback loop.
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 7th December 2003, 10:46 AM   #5
matjans is offline matjans  Netherlands
diyAudio Member
 
matjans's Avatar
 
Join Date: Aug 2003
Location: Utrecht, NL
Send a message via MSN to matjans
thank you peter.
(what ways are you referring to btw?)

well, with this amp being my standard amp for the time being i'm looking for an active pre. Does anyone have any ideas what goes well with a GC? I'm actually looking for a simple tube preamp... No phono stage needed (as i won't be using any vinyl)

sorry analogue fans but those things are way out of my budget for now...
  Reply With Quote
Old 7th December 2003, 11:42 AM   #6
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Hi Matjans, nice little GC there!

As regards a 'simple valve preamp' THIS is what I built earlier this year based on suggestions to a similar request.

I'm still working on it (mainly hum issue now, I may have to go to DC for the heaters) but it does sound good!) BTW - I used the Stephen Robinson circuit.
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 7th December 2003, 01:17 PM   #7
ronc is offline ronc  United States
diyAudio Member
 
Join Date: Mar 2003
Good job!
All mine look like black boxes?
Have you tried battery P/S? Try it , the results will surprise you.
ron
  Reply With Quote
Old 7th December 2003, 01:22 PM   #8
matjans is offline matjans  Netherlands
diyAudio Member
 
matjans's Avatar
 
Join Date: Aug 2003
Location: Utrecht, NL
Send a message via MSN to matjans
thanks nuuk, i was thinking about something like this . most of the site is in dutch though so here's another link (schematics) .

Triodedick has a *lot* of tube amps on his site -hence the name- (some stories are in english) including some very nice 300B's (and a 211 whoo!!).

ron: haven't tried it yet, maybe i'll rip the battery out of my car (and my dad's car.... and my mom's car...)
  Reply With Quote
Old 7th December 2003, 01:30 PM   #9
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Quote:
Originally posted by matjans

(what ways are you referring to btw?)
Nicer wood panels and more pleasing proportions

I see you still use regular bridges. Try MUR 860.

Also, the footing on the amp is quite critical. Try to use one foot on each site, and then a spike (at one point only) under the central copper bar.
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 7th December 2003, 01:40 PM   #10
matjans is offline matjans  Netherlands
diyAudio Member
 
matjans's Avatar
 
Join Date: Aug 2003
Location: Utrecht, NL
Send a message via MSN to matjans
hi peter.

in my previous amps I used onsemi mur840's and mbr840's. Can't really decide which i like best. the regular bridged sound a little soft (which is nice), the mur840's sound a little harsh (which is nice when playing rock music) and the mbr840s sound somewhere in between the previous two. Which is nice aswell.

dilemma

I don' really know what's going on btw but sound sound quality is varying with the hour. Bass was sloppy all of a sudden and now it's tight as hell. blackgates burning in ??
  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
Patek gainclone, upgraded wiring and posts Ang Swap Meet 0 6th July 2008 01:12 PM
Patek & Fostex 166e pwan Chip Amps 2 6th May 2007 02:48 AM
Gaincard vs. Patek listening comparison on 6moons.com KT Chip Amps 28 16th December 2005 12:47 AM
YAP - yet another Patek Stabist Chip Amps 18 25th October 2004 08:29 AM
patek or monoblocks? travis Chip Amps 0 9th December 2003 06:42 AM


New To Site? Need Help?

All times are GMT. The time now is 09:27 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