|8th May 2004, 10:09 PM||#1|
Join Date: Mar 2004
post your leach amp photos
I would like to see the leach amps built by the people of diyaudio.
Please post it here.
I have already found a few with the search but I want more.
|9th May 2004, 01:34 AM||#2|
Join Date: May 2003
Location: Palatiw, Pasig City
the best advertisement for a good audio design is the number of diy'ers wanting to build it after all the years....never the say so of so called gurus....
|10th May 2004, 03:43 PM||#5|
Join Date: Jan 2002
Location: Livermore, CA
Nice work, Jens! Did you fabricate/etch your actual PCB's, too?
Is your running with high bias, considering the heatsink size?
|10th May 2004, 04:27 PM||#6|
Yes I etched the PCBs myself using the equipment available at the school I studied at when I build the amp.
I was running the amp at about 100W idle for each of the four channels; however I could not perceive any difference when changing this to about 30W so this is the current (no pun intended) itís now set at.
I made some modifications by adding three extra sets of output transistors, and changing the input small signal transistors to BC546/556 because these are commonly available here in Denmark.
The rest of the transistors are:
MJE340/350 for VAS and predrive stage.
MJE15032/15033 for driver stage.
MJL3281/1302 for output.
I noticed a lot of questions from Wagener regarding this amp I hope you donít mind me answering here where more people can read it and hopefully use it.
The caps I used are almost all PP (Polypropylene) or PE (Polyethylene) types, except for the supply decoupling caps witch all are some form of electrolytic that I had I in stock.
The only ceramic caps I used are the ones used in the VAS stage for stability and the one in the feedback compensation network.
I used a large NON polarised electrolytic (470 ĶF) caps for input DC block, and another for the feedback cap that sets the low cut off frequency.
I hope this helps.
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|High Current Leach/leach super amp||bowdown||Solid State||41||2nd March 2011 02:15 PM|
|Not being able to post replies on any post on Parts & Supplies||Mayank||Forum Problems||0||8th June 2007 02:38 PM|
|Not able to post photos||John Medvich||Forum Problems||11||28th November 2006 06:11 PM|
|Leach SuperAmp Photos||BeanZ||Solid State||40||29th August 2006 08:47 AM|
|More CES Photos||roddyama||Everything Else||24||21st January 2003 04:09 AM|
|New To Site?||Need Help?|