Negative Feedback Bogen CHB100 - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 August 2006, 02:50 AM   #1
diyAudio Member
 
Join Date: Aug 2006
Default Negative Feedback Bogen CHB100

Hi guys, I have a Bogen CHB-100 that I am working on. According to the schematic it has a Negative Feedback resistor of 33k. I can't find it in the amp. That is to say that there is no 33k resistor anywhere along the line that it is supposed to be attached to. For that matter there is not even a line that looks like what's on the schematic. All I want to do is change the value of that resistor but I can't find it. Anyone know anything about it?

Thanks
  Reply With Quote
Old 9th August 2006, 04:05 AM   #2
diyAudio Member
 
sorenj07's Avatar
 
Join Date: May 2006
a schematic and/or some pics might be nice... saves us the hassle of trying to find them online..
  Reply With Quote
Old 9th August 2006, 09:27 AM   #3
diyAudio Member
 
Join Date: Aug 2006
Default Here you go

I thought someone might have done one of these amps and would know exactly what I was talking about.

http://www.schematicheaven.com/hifia...gen_chb100.pdf
  Reply With Quote
Old 9th August 2006, 03:36 PM   #4
diyAudio Member
 
Join Date: Aug 2006
Default Found it

Apparently there are at least two slightly different manufacturers schematics out there and I was looking at the one that didn't quite match my amp. Looked at a different schematic and voila I found it. Thanks anyway.
  Reply With Quote
Old 2nd August 2014, 07:52 PM   #5
diyAudio Member
 
Join Date: Jul 2014
old post. there are at least two schematics out there. one, which no doubt matches the OP here, is the manufacturers. the other is a modded chb-100 by someone wanting a guitar amp.
  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
Bogen chb100 input conversion suggestions Jukelemon Tubes / Valves 13 21st April 2009 04:38 AM
Bogen CHB100 Power Supply Question rollei35guy Tubes / Valves 2 14th October 2008 02:12 PM
Modding a Bogen CHB100... jzahos Tubes / Valves 0 11th February 2008 12:48 AM
Get away from negative feedback ? N-Well Pass Labs 3 1st March 2006 11:17 PM
7868 tubes in Bogen CHB100 thedoctor Tubes / Valves 6 22nd July 2005 06:36 PM


New To Site? Need Help?

All times are GMT. The time now is 06:40 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