amp crackling/farting? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 15th March 2005, 08:10 AM   #1
twizza is offline twizza  United States
diyAudio Member
 
Join Date: Mar 2005
Location: pac NW
Default amp crackling/farting?

I recently got a Randall RG 200 Amp
It gets very crackly when I give it any amount of volume and I have to turn the Bass EQ way down. What's going on? It also doesn't seem to get that loud.
  Reply With Quote
Old 15th March 2005, 09:05 AM   #2
Enzo is offline Enzo  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Lansing, Michigan
Unless the speaker is bad, it sounds like you might be clipping. First, I would verify all the power supplies. Both the power amp supplies and the preamp supplies. One could be missing or the filter might have failed on one resulting in seriously reduced voltage and the addition of hum or distortion.

And certainly an op amp might have failed and is squeezing the signal over against one of the rails.
  Reply With Quote
Old 15th March 2005, 09:16 AM   #3
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
I've also had this from a bad driver or output transistor. They kind of half worked, measured OK with diode test.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 16th March 2005, 07:45 AM   #4
twizza is offline twizza  United States
diyAudio Member
 
Join Date: Mar 2005
Location: pac NW
thanks for the help guys.
I am leaning towards it being a bad voice coil. here is some more info. It seems to be good through my headphones. Also I ran it out to my reciever (similar to what I do with my POD) and it did sound better..
  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
quad 303 Crackling tony_ives Solid State 7 21st March 2008 10:10 PM
Crackling when using a RAKK DAC Jitterbug Digital Source 0 4th April 2006 08:04 PM
Help me stop my preamp from farting! Buckeye Sound Tubes / Valves 14 26th October 2005 03:21 AM
Help with crackling noise Free0 Digital Source 0 15th June 2004 02:37 AM
Crackling/Static on my GC. azira Chip Amps 2 25th May 2004 10:48 PM


New To Site? Need Help?

All times are GMT. The time now is 12:10 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