Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 5th June 2005, 08:14 PM   #1
hrad is offline hrad  United States
diyAudio Member
 
Join Date: Mar 2004
Location: Cleveland, OH
Question Threshold 4000 & Receiver attached to same speakers

I would like to use the same speakers that are connected to my Threshold 4000 for multi channel and surround sound. I am thinking of connecting a quality receiver to a 10 amp. bradley controls electric relay (and then to the speakers) which would open when the 4000 is powered. I am afraid if I use a 10 amp relay between the 4000 and the speakers it will denegrate the sound (I am now using quality cable and connections). Would the output of the receiver through the speakers and then to the non-powered 4000 harm it?
If I set this up, is there an optimal placement of the relay in the curcuit to the speakers (closer to amp. or speaker)?
Some of you may wonder why I do not purchase a new premium multi-channel amplifier; my budget is the answer!
Thanks for any advice!
  Reply With Quote
Old 5th June 2005, 11:01 PM   #2
diyAudio Member
 
Join Date: Feb 2001
Location: Columbia, SC
It's possible that I'm not understanding your post, but...
All things considered, it's not exactly optimal to switch a pair of speaker between two different sources. That said--and assuming that I understood your post correctly--I think you're going about it the wrong way. The thing to do is to put the speakers on the Common contacts of the relay, and put the receiver on the Normally Open contacts and the Threshold on the Normally Closed contacts. That way neither amplifier tries to drive the output of the other.
From your post, I assume that the Threshold is used for stereo listening. If that is the case, you need not actuate the relay at all. The default position for the relay is such that the contacts are set for the Threshold to play.
If you want to listen to the receiver, you'll need to turn on whatever circuit you use to actuate the relay, perhaps a simple power supply hooked to the convenience outlet on the back of the receiver. This will automatically disconnect the Threshold and connect the speakers to the receiver.

Grey
  Reply With Quote
Old 6th June 2005, 06:33 AM   #3
hrad is offline hrad  United States
diyAudio Member
 
Join Date: Mar 2004
Location: Cleveland, OH
Thanks! That sounds like a safer way. I was trying to avoid sending a signal through the relay when useing the Threshold. The relay is rated at 10 amps, but anything in the path may effect the sound. I've got the speakers connected with Levenson cable and gold plated spades silver soldered. I use the Threshold when I want the best sound and have money to pay the electric bill!
  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
Richard Allan speakers. T-S parameters attached. Ouroboros Multi-Way 11 31st May 2013 01:23 PM
LM3875 power up test.. and it crackles w/o speakers attached? Keyoke Chip Amps 9 2nd March 2012 01:39 AM
Clipping/Distortion in a Pioneer QX-4000 Receiver wrlampe Solid State 5 16th August 2011 02:39 AM
Threshold 4000 R-K Rønningstad Pass Labs 10 28th August 2009 04:27 AM
Threshold 4000 "polarity" inertial Pass Labs 2 11th March 2005 11:10 AM


New To Site? Need Help?

All times are GMT. The time now is 11:14 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