Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 13th August 2003, 03:46 PM   #1
rabbitz is offline rabbitz  Australia
diyAudio Member
 
rabbitz's Avatar
 
Join Date: Jul 2003
Location: Newcastle, Australia
Default Is there a way of doing this?????

Is there a way to mix stereo speaker outputs from an amp into a mono speaker output????????

I have searched high and low - any ideas?
  Reply With Quote
Old 13th August 2003, 03:50 PM   #2
sajti is offline sajti  Hungary
diyAudio Member
 
Join Date: Apr 2003
Location: Vác, Hungary
This is only possible if You drive the amps with absolutely same signal, and set the output level equal. Some small series resistors at the outputs helps to equal the output current.

Sajti
  Reply With Quote
Old 13th August 2003, 03:52 PM   #3
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
Do you want to bridge the amp, or do you merely want a single channal monaural output? For the latter you just need a summing circuit at the input. Check out Rod Elliot's site.
  Reply With Quote
Old 13th August 2003, 04:10 PM   #4
rabbitz is offline rabbitz  Australia
diyAudio Member
 
rabbitz's Avatar
 
Join Date: Jul 2003
Location: Newcastle, Australia
Thanks for the responses.

I have a stereo source going into a stereo amp and want one of the stereo speaker outputs mixed to mono. I hope that clarifies it.
  Reply With Quote
Old 13th August 2003, 04:42 PM   #5
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
Donīt even think about mixing the output signals!!!!
Mix the input signals as tiroth suggest
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com
  Reply With Quote
Old 13th August 2003, 07:06 PM   #6
rabbitz is offline rabbitz  Australia
diyAudio Member
 
rabbitz's Avatar
 
Join Date: Jul 2003
Location: Newcastle, Australia
Point taken.

Thanx
  Reply With Quote
Old 13th August 2003, 10:11 PM   #7
haldor is offline haldor  United States
diyAudio Member
 
Join Date: Aug 2001
Location: Columbus, Ohio
Quote:
Originally posted by rabbitz
Thanks for the responses.

I have a stereo source going into a stereo amp and want one of the stereo speaker outputs mixed to mono. I hope that clarifies it.
You can do this easily, at the input to the amp. Use resistors to sum the signals (don't just jumper the two channels together. Be aware that some music is not mixed to sound good when summed to mono (only real reason for mono sum compatibility was AM radio and AM is not for music anymore). If you notice a hollow kinda-of sound the recording is not mono-compatible.

Here is more than you probably wanted to know about summing audio signals. http://www.rane.com/note109.html

Phil
  Reply With Quote
Old 14th August 2003, 03:18 AM   #8
Diode is offline Diode  United States
diyAudio Member
 
Join Date: Feb 2003
Location: Oklahoma USA
Interesting proposition.......

I wouldn't try this at home... LOL AND I'd try it on a junk amp but you may be able to connect some DC blocking caps in SERIES with the speaker. Then there is no "DC path" and maybe it would work but I have never done it and wouldn't try it either. The amps may also oscillate and blow up too. I just don't think it will work as the signals driving the speaker may blow it up too. I think I understand what you're trying to do though. I'm with the rest of the world.... Mix at the preamp level.

Let us know what happens!!!!!

Chris
__________________
The best audio is clean audio!
  Reply With Quote
Old 14th August 2003, 02:38 PM   #9
rabbitz is offline rabbitz  Australia
diyAudio Member
 
rabbitz's Avatar
 
Join Date: Jul 2003
Location: Newcastle, Australia
Thumbs down Bad idea..........

Thanks for all your replies and help - much appreciated.

Bad idea - I'll throw it in the bin. At least I know now. I don't want to try it and give my amp a heart attack.

I can't do it at input as I need the stereo output at the same time - stereo speakers + passive mono woofer. I'll continue drive it of one channel.

Thanx, thanx, thanx.

Rabbitz
  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



New To Site? Need Help?

All times are GMT. The time now is 07:39 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2