Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Need an input selector and/or volume controller for my amp - Google ain't much help!!
Need an input selector and/or volume controller for my amp - Google ain't much help!!
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 21st September 2010, 09:54 PM   #1
johnalexwarren is offline johnalexwarren  England
diyAudio Member
 
Join Date: Aug 2010
Location: Hereford, UK
Default Need an input selector and/or volume controller for my amp - Google ain't much help!!

Evening all!

Well I've spent the last couple of hours Googling to try and find a 3 or 4 source input selector (well at least 2 source, possibly with integrated volume control) for my amp but so far it's been pretty fruitless.

Can anybody help? Ideally I need one with a PCB layout/component list and I don't need tone or balance controls.

Thanks!

John.

Last edited by johnalexwarren; 21st September 2010 at 10:21 PM.
  Reply With Quote
Old 21st September 2010, 10:12 PM   #2
Tekko is offline Tekko
Banned
 
Join Date: Jan 2005
look on ebay, there are remote controlled input selector and volume control kits out there.
  Reply With Quote
Old 21st September 2010, 10:21 PM   #3
johnalexwarren is offline johnalexwarren  England
diyAudio Member
 
Join Date: Aug 2010
Location: Hereford, UK
There certainly are but at 40 that's almost as much as the amp cost me to make! Maybe the manufacturer will send me a schematic lol!
  Reply With Quote
Old 21st September 2010, 10:35 PM   #4
theAnonymous1 is offline theAnonymous1  United States
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
It can be as simple as a 3 or 4 position 3-pole rotary switch for the selector and a potentiometer for the volume control. You didn't specify whether you need it to be remote controlled or not though.
  Reply With Quote
Old 21st September 2010, 10:48 PM   #5
johnalexwarren is offline johnalexwarren  England
diyAudio Member
 
Join Date: Aug 2010
Location: Hereford, UK
Well those were actually my initial thoughts and I have a dual gang pot for the volume control, however I've read a number of articles and it seems that the general concensus is that rotary switches can introduce noise to the circuits...? I don't need remote controlled but I wouldn't object to it! The simpler/cheaper the better!

Last edited by johnalexwarren; 21st September 2010 at 10:50 PM.
  Reply With Quote
Old 21st September 2010, 11:04 PM   #6
dmx2020 is offline dmx2020  New Zealand
diyAudio Member
 
Join Date: May 2005
Location: auckland
May be this one: 5 way switch

Last edited by dmx2020; 21st September 2010 at 11:15 PM.
  Reply With Quote
Old 22nd September 2010, 01:27 AM   #7
theAnonymous1 is offline theAnonymous1  United States
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Quote:
Originally Posted by johnalexwarren View Post
Well those were actually my initial thoughts and I have a dual gang pot for the volume control, however I've read a number of articles and it seems that the general concensus is that rotary switches can introduce noise to the circuits...?
I don't see why a properly wired selector switch would add any noise; it never has for me anyway.
  Reply With Quote
Old 22nd September 2010, 07:00 AM   #8
johnalexwarren is offline johnalexwarren  England
diyAudio Member
 
Join Date: Aug 2010
Location: Hereford, UK
Well there's nothing like trial and error so I guess the thing to do it give the rotary a try and see what happens. Cheers guys!
  Reply With Quote
Old 6th October 2010, 08:06 PM   #9
johnalexwarren is offline johnalexwarren  England
diyAudio Member
 
Join Date: Aug 2010
Location: Hereford, UK
Default Do I really need a switch?

Been pondering my options over a bottle of Fursty Ferret and it occurred to me that maybe I'm just making things more complicated than they need to be. Would really appreciate your opinions on the below...

My amp will primarily be used for a CD player with the occasional bout of vinyl indulgence, and there's not going to be a lot of source switching, so is it not a viable option to take the switch out of the signal path altogether and wire two inputs into one?

Will there be any detrimental effect to the signal/amp this way, and is it simply a case of connecting both inputs (one via a pickup pre-amp) to the PCB connectors or is there more two it? What would happen if two signals were accidentally played at the same time?

Thanks,

J.

Last edited by johnalexwarren; 6th October 2010 at 08:27 PM.
  Reply With Quote
Old 6th October 2010, 10:34 PM   #10
dave_gerecke is offline dave_gerecke  United States
diyAudio Member
 
Join Date: Dec 2007
Location: Phoenix, AZ
Hello johnalexwarren, it's not a good idea to connect two different outputs from different devices to the same input. You could potentially blow up the output of both devices. I would recommend that you use at least a two way switch for your inputs, if you have switching. You could get away with a common DPDT switch here, as the ground wires should be common, thus don't need switching. If you desire more inputs, you could also try using an old printer switch from a computer. There are ones out there that had 4 positions. They usually have a lot of decks, more than necessary, but you can ignore them.
And last but not least, if you aren't going to be switching inputs often, you could always just build the amp with one input, and then swap the cables from the source as necessary. If you do this, remember to turn the amp off first.

Peace,

Dave
  Reply With Quote

Reply


Need an input selector and/or volume controller for my amp - Google ain't much help!!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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lite Audio MV-01 / MV-06 remote controlled volume/input selector roffe Parts 82 16th March 2016 04:23 PM
help with my volume control, input selector, and other questions jufreese Chip Amps 5 26th March 2009 05:39 PM
Samsung 1602VFD For CDROM Controller & Remote Volume Controller slowgay Swap Meet 2 22nd November 2008 03:44 PM
can I bypass my receiver's input selector and still use volume pot? bonjonno Solid State 9 20th February 2008 03:55 AM


New To Site? Need Help?

All times are GMT. The time now is 04:38 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki