Want a simple power-off mute option - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

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
Reply
 
Thread Tools Search this Thread
Old 8th April 2008, 10:05 PM   #1
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
Default Want a simple power-off mute option

Hi,
I'm thinking of using relays to work a mute feature or speaker disconnect (no power-off noises).

I'm wondering if I can make a "one round knob" setup with an SPST + stereo dual gang potentiometer? Oh, and where on earth to buy one of those things?

Thanks!
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  Reply With Quote
Old 8th April 2008, 11:38 PM   #2
MartyM is offline MartyM  United States
diyAudio Member
 
MartyM's Avatar
 
Join Date: Oct 2006
Location: Monroe, North Carolina, USA
Send a message via Yahoo to MartyM
You won't have to use relays unless you want to. I eliminate the bulk and somewhat large current draw of relays by using NPN and PNP BJT transistors on the mute pins to hold the MUTE pins at 0V, thereby muting it.

I've seen the dual-gang pots with a switch on eBay, in a seller's eBay store when searching for knobs. (Asian seller).

Hope this helps some.

Marty
  Reply With Quote
Old 9th April 2008, 12:38 PM   #3
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi,
the volume control with ON/OFF switch used to be very common.
This switch type is still available, but may be less popular and so less easy to find a stockist.
Keep searching.
__________________
regards Andrew T.
  Reply With Quote
Old 9th April 2008, 06:41 PM   #4
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
I'll do just that.
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  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
lm3886 no mute option rtill Solid State 8 24th August 2009 02:32 PM
Power transformers versus amplifier output power..what is your option? destroyer X Solid State 38 9th May 2009 06:23 PM
Pass B1 Passive Buffer Preamp. A good and simple option for chipamps?. A Sanchez Chip Amps 5 2nd January 2009 06:34 PM
Best option to attenuate the signal in this simple cct HankMcSpank Solid State 28 7th August 2008 10:20 AM
Power On Mute for PLH FYC Pass Labs 3 4th April 2007 09:08 AM


New To Site? Need Help?

All times are GMT. The time now is 10:02 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