LJM L25D volume control - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 7th September 2012, 06:22 PM   #1
diyAudio Member
 
Join Date: Sep 2012
Default LJM L25D volume control

Hi.
Did anyone build volume control for l25d amp?
Are 50k LOG pots ok?
Does anybody have schematic for volume control?
I am new to this,so can somebody help me?
Thanks
  Reply With Quote
Old 8th September 2012, 08:18 PM   #2
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
If its like the 2092 amp it has a low input impedance.
A 4k7 should be about right.
__________________
PCBCAD50 software. http://www.murtonpikesystems.co.uk
  Reply With Quote
Old 8th September 2012, 08:24 PM   #3
Banned
 
Join Date: Jan 2005
The low impedance can be fixed with a input buffer.
  Reply With Quote
Old 10th September 2012, 06:12 PM   #4
diyAudio Member
 
Join Date: Sep 2012
And how do i do that?tekko
  Reply With Quote
Old 10th September 2012, 07:19 PM   #5
Banned
 
Join Date: Jan 2005
A input buffer is simply an opamp with the output and inverting input connected together. This is also called a unity gain amplifier.
  Reply With Quote
Old 22nd September 2012, 07:47 PM   #6
diyAudio Member
 
Join Date: Sep 2012
Thanks for reply.I we used 5 k pot(LOG) and it works great.
  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
Volume control on DVD player remote. Lose resolution at low volume? Circlotron Digital Source 2 10th June 2011 07:20 PM
Remote control Passive Volume Control with Display ua100k Swap Meet 2 31st May 2011 03:01 PM
Replacing broken volume control with digital volume control Gunawan W Solid State 19 15th December 2010 10:46 AM
i need preamp schematics w/o tone control or volume control hernanstafe Parts 7 30th January 2008 03:12 AM
remote control motorised control for volume pot/knob CharlesY Parts 0 25th July 2005 11:12 AM


New To Site? Need Help?

All times are GMT. The time now is 07:32 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