Basic Guitar Transistor Amplifier - Page 4 - diyAudio
Go Back   Home > Forums > Live Sound > Instruments and Amps
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Instruments and Amps Everything that makes music, Especially including instrument amps.

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
Thread Tools Search this Thread
Old 18th May 2012, 09:09 PM   #31
diyAudio Member
Join Date: Nov 2010
Location: England Hertfordshire
Cook Your Own Distortion
I'l post this here too, i though it was great to start off with. some op-amp and transistor ideas.
  Reply With Quote
Old 18th May 2012, 09:37 PM   #32
diyAudio Member
Join Date: May 2012

In terms of controls, really just master volume to start with,and probably a treble, mid and bass later. Maybe a gain control eventually.
  Reply With Quote
Old 18th May 2012, 11:12 PM   #33
diyAudio Member
Join Date: Nov 2010
Location: England Hertfordshire
well have you ever seen a typical guitar amp schematic? alot of the tone controls are the same (FMV) with treble mid bass and volume. gain is just a volume control at the start of a circuit. I wouldnt make a pre-amp just with 2 transistors though, personally i prefer an op-amp with diodes as distortion than overdriven transistors. and you have alot more control in terms of frequency response with an op-amp
  Reply With Quote
Old 18th May 2012, 11:17 PM   #34
diyAudio Member
Loudthud's Avatar
Join Date: Nov 2007
Location: Near Dallas Texas USA
The schematic linked below has a fairly simple descrete power amp. The preamp uses a dual opamp.
  Reply With Quote
Old 19th May 2012, 05:41 PM   #35
diyAudio Member
Join Date: May 2012
Thanks guys
  Reply With Quote
Old 19th May 2012, 08:52 PM   #36
Simon B is offline Simon B  United Kingdom
diyAudio Member
Join Date: Dec 2011
Location: North-East England
The bottom half of that Marshall schematic, the power amp section, is what you could do with a chip amp. In fact, I think that there are Marshall practice amps that do use such an arrangement.

You can get kits on ebay for a pcb with components for just a couple of quid. They're from china of course, so myself, I'd get another chip from a known good source.
Engineer: One who can do for 10 shillings what any fool can do for 10 pounds.
  Reply With Quote
Old 21st May 2012, 08:46 AM   #37
diyAudio Member
Join Date: May 2012
Thanks Simon
  Reply With Quote
Old 27th May 2012, 03:25 PM   #38
Chronus is offline Chronus  United States
diyAudio Member
Chronus's Avatar
Join Date: May 2012
Location: New York
Originally Posted by Simon B View Post


Yeah , that's what happens when you are tired. I forgot a schematic to illustrate what I was saying. I have built a number of these 3 or 5 transistor amps. They are all basically the same configuration save for a few mods here and there.

This one is from another forum, but is what I was thinking of at the time except for the single ended power supply which of course simplifies things.

Simple 40 Watt Power Amplifier

Well that certainly saves on tone controls.....

Should have specified radio frequency signals and caps in the pf range. RF could be a problem in any high gain amp.

Not convinced that this is appropriate advice to be offering to this member.
  Reply With Quote


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
Basic Guitar Amplifier Using the Hitachi HA13118 analog forever Chip Amps 0 17th October 2010 04:36 PM
Question regarding basic transistor circuit 300b Solid State 13 15th September 2009 04:22 AM
Will this design work for a basic Discrete Guitar Preamp?? Minion Instruments and Amps 11 18th September 2007 03:24 PM
Basic OPA134 amplifier amirmk Solid State 5 5th November 2004 09:56 PM
Basic Amplifier Question RobPhill33 Solid State 22 6th October 2002 11:22 AM

New To Site? Need Help?

All times are GMT. The time now is 10:02 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2