Need help with mono LM4702 Amp - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

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 15th May 2011, 03:33 PM   #1
diyAudio Member
Join Date: Aug 2010
Default Need help with mono LM4702 Amp

I already built an stereo LM4702 amp for my main speakers and i love the sound quality. I want to build one for my subwoofer. If i want to build just one channel can i leave the (comp,sink,source,+,- pins) for the unused channel on the lm4702 floating or do they need to be shorted to ground or something.
  Reply With Quote
Old 18th May 2011, 08:13 PM   #2
diyAudio Member
Join Date: Aug 2010
  Reply With Quote
Old 19th May 2011, 12:41 AM   #3
diyAudio Member
Join Date: Sep 2009
As this will be for subwoofer use, maybe you can consider using both channels in bridged mode for more power?
  Reply With Quote
Old 8th July 2011, 08:42 AM   #4
diyAudio Member
Join Date: Jul 2011
Hi, do you perhaps have the schematic for the amp you built, i would like to build one.
  Reply With Quote
Old 17th July 2011, 01:35 PM   #5
diyAudio Member
Join Date: May 2009
Location: Kumanovo, Macedonia
Send a message via MSN to petrusevski Send a message via Yahoo to petrusevski
benproiii, id really like to see pictures and schematic from your project. Thanks
  Reply With Quote
Old 17th July 2011, 05:52 PM   #6
gootee is offline gootee  United States
diyAudio Member
Join Date: Nov 2006
Location: Indiana
Blog Entries: 1
For opamps that are unity-gain stable, the standard procedure for an unused one in a dual package is to connect the output to the negative input and then ground the positive input.

But the LM4702 is apparently NOT unity-gain stable. You could probably wire the unused one with components like in Figure 1 on page 10 of the datasheet, but connect its input to ground.
  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
Need help with LM4702 Amp benproiii Solid State 14 26th April 2011 10:44 PM
lm4702 power amp darkwind_j Chip Amps 5 30th September 2009 08:39 AM
Help with amp??? LM4702+2SK1530/2SJ201 Dougie085 Solid State 13 1st December 2007 03:25 PM
My 8-channel LM4702 AMP harvardian Chip Amps 4 9th December 2006 07:16 PM
LM4702 - BJT recommends (non-Darlingtons) for amp SpittinLLama Chip Amps 0 4th August 2006 06:02 PM

New To Site? Need Help?

All times are GMT. The time now is 10:03 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