Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

loud hummmmmmmmmm
loud hummmmmmmmmm
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 1st October 2003, 01:09 PM   #1
moonshow is offline moonshow
diyAudio Member
 
Join Date: Nov 2002
Location: good city
Default loud hummmmmmmmmm

hi

its my first time to build a gainclone, i have wired everything up and plugged the amp into a 220 volts socket. all i hear is a loud humm and a faint sound of the music. im a little confused with regards to the diagram.

where do you put the pot?is it between the 4.7 ufd 35 volts cap. and the phono input?cause thats what i did.

are my speaker busted already?

instead of the 56k filter, you can put the pot right? the pot that i have has 3 solder leads, how do you wire them up?

i seem to be lacking some parts in my gainclone.

i have wired up the ff.

4.7 uf 35v cap=1
1000 uf 50v cap=2
220k resistor, 1/4 wat=1
10k resistor 1/4 watt=

thanks for your help.
  Reply With Quote
Old 1st October 2003, 02:12 PM   #2
miguel2 is offline miguel2  Portugal
diyAudio Member
 
Join Date: Jun 2002
Location: Portugal
Hi,

DONT connect your speakers now! Use first some crap speaker you dont mind to loose.

Measure offset of both channels. Starwire the ground wires. Try it without the pot: input cap (4.7), 10k resistor to -input. +input to ground. 220k on feedback. 1000uF caps on the rails. And youre done!

Miguel
  Reply With Quote
Old 1st October 2003, 03:37 PM   #3
Matttcattt is offline Matttcattt  England
diyAudio Member
 
Matttcattt's Avatar
 
Join Date: Feb 2003
Location: Bristol
Default Re: loud hummmmmmmmmm

Quote:
Originally posted by moonshow
hi

its my first time to build a gainclone, i have wired everything up and plugged the amp into a 220 volts socket. all i hear is a loud humm and a faint sound of the music. im a little confused with regards to the diagram.

where do you put the pot?is it between the 4.7 ufd 35 volts cap. and the phono input?cause thats what i did.

are my speaker busted already?

instead of the 56k filter, you can put the pot right? the pot that i have has 3 solder leads, how do you wire them up?

i seem to be lacking some parts in my gainclone.

i have wired up the ff.

4.7 uf 35v cap=1
1000 uf 50v cap=2
220k resistor, 1/4 wat=1
10k resistor 1/4 watt=

thanks for your help.

Quote:
Originally posted by miguel2
Hi,

DONT connect your speakers now! Use first some crap speaker you dont mind to loose.

Measure offset of both channels. Starwire the ground wires. Try it without the pot: input cap (4.7), 10k resistor to -input. +input to ground. 220k on feedback. 1000uF caps on the rails. And youre done!

Miguel
yes, use a rubbish test speaker.

sorry about the bad quality diagram, i hope you get the idea though...
Attached Images
File Type: gif pot.gif (2.2 KB, 197 views)
__________________
If it aint broke, don't fix it. If it is broke, fix it.
If you can't fix it, take it apart and see how it "worked".
  Reply With Quote

Reply


loud hummmmmmmmmmHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
For those that like it loud RacerXtreme Multi-Way 25 12th September 2007 04:02 AM
How loud can you go? paulspencer Multi-Way 7 28th June 2007 04:12 AM
T-amp, too loud, too soon Mr.Mekulic Class D 16 27th October 2006 04:40 PM
BIG LOUD 3 way? xstephanx Multi-Way 17 4th July 2006 09:43 PM
how loud do i need to go badger Multi-Way 6 8th January 2002 07:24 PM


New To Site? Need Help?

All times are GMT. The time now is 07:59 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki