IFR513 headphone amp channel mismatch - diyAudio
Go Back   Home > Forums > Amplifiers > Headphone Systems

Headphone Systems Everything to do with Headphones

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 19th May 2009, 09:31 PM   #1
diyAudio Member
 
Join Date: May 2008
Default IFR513 headphone amp channel mismatch

Hi,

I have a headphone amp based on the IFR513 MOSFET which has a noticeable volume difference between the L + R channel outputs. All the resistors have been checked and measured to ensure a close match. All things being equal, could one or both of the MOSFET's be at fault?

Also, do MOSFET's of the same type differ greatly in output?

Regards,

Chris.
  Reply With Quote
Old 20th May 2009, 04:10 PM   #2
diyAudio Member
 
Join Date: May 2008
Any ideas?

I have the amp in bits at the moment (re-wiring the passive pre side of it). Is it worth ordering some more MOSFETS, or would it be worth adding trim pots in the bias cct?

Many thanks,

Chris
  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
impedance mismatch ddoyle Multi-Way 6 17th January 2008 04:06 PM
1 watt per channel tube headphone amp Sal Brisindi Headphone Systems 6 6th April 2007 01:05 AM
2 channel headphone amp impsick Headphone Systems 9 18th February 2007 04:21 AM
DIy tube-headphone amp (only 1 channel) jarthel Headphone Systems 6 13th May 2006 02:34 PM
KG headphone amp, one channel... L Daniel Rosa Swap Meet 8 19th October 2002 12:51 PM


New To Site? Need Help?

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