View Full Version : Connecting a compact disk player to 8 integrated amplifiers
Vitopanch 07-03-2007, 12:35 AM Hail,
This is probably unusual to do, however, I want to connect a compact disk player, yet to be purchased, to 8 integrated amplifiers as a permanant thing. I can not think of a reason as to why there would be a signal loss or degradation in doing this, except that I read somewhere that there is a signal loss for every connector/coupler in the cable. To do this with RCA splitters would obviously involve a ton of them, hence my concern and enquiry to yall.
Is this true and if it is, is there a device that I could cable the compact disk player to and then connect the integrated amplifiers to that would maintain signal strength and quality?
Your input will be apreciated.
Vito
Cloth Ears 07-03-2007, 12:39 AM Not exactly sure why you'd be connecting the same CD player to 8 different integrateds, BUT, you could connect each of the integrateds in series using the 'tape out' (into either the CD or Aux input) if it's not already being used for a Cassette deck.
Tapehead47 07-03-2007, 12:50 AM Go to Sam Ash or Guitar Center. They'll have the right stuff I'd bet.
Lefty 07-03-2007, 12:56 AM Hail,
This is probably unusual to do, however, I want to connect a compact disk player, yet to be purchased, to 8 integrated amplifiers as a permanant thing. I can not think of a reason as to why there would be a signal loss or degradation in doing this, except that I read somewhere that there is a signal loss for every connector/coupler in the cable. To do this with RCA splitters would obviously involve a ton of them, hence my concern and enquiry to yall.
Is this true and if it is, is there a device that I could cable the compact disk player to and then connect the integrated amplifiers to that would maintain signal strength and quality?
Your input will be apreciated.
Vito
It's not so much the loss of splitters, that would be minor at worst, as it is a problem of parallel input impedances of the 8 amplifier input circuits as seem by the driver output circuit of the CD player. If you can be assured that you would not have more then a couple of the integrated amp's input function selector switched to CD at any given time then it will not be a problem. However if all 8 amps have the CD selected then the signal will be attenuated greatly due to the then much lower input impedance 'seen' by the CD player.
Lefty
Vitopanch 07-03-2007, 01:05 AM Thank yall for the responses. The intent is to have all eight receiving and playing the signal concurrently. So, that being said, is there a device that will mitigate the attenuation?
Vito
Cloth Ears 07-03-2007, 02:01 AM Thank yall for the responses. The intent is to have all eight receiving and playing the signal concurrently. So, that being said, is there a device that will mitigate the attenuation?
Vito
My method will probably get you almost no attentuation. The only degradation will be due to the leads you use as the tape out is one of the shortest, cleanest signal pathys through any amplifier.
Vitopanch 07-03-2007, 02:18 AM Jonty,
Excellento. Thank you and the rest of yall very much.
Vito
RichPA 07-03-2007, 05:46 AM Using the tape outs as Jonty describes will avoid the impedance/attenuation problem only if those tape outs are buffered; if they are just straight pass-through connections, as is common, there still may be an issue with the 8 paralleled input impedances. But, give it a try - you're not going to hurt anything.
markthefixer 07-03-2007, 11:45 AM Using the tape outs as Jonty describes will avoid the impedance/attenuation problem only if those tape outs are buffered; if they are just straight pass-through connections, as is common, there still may be an issue with the 8 paralleled input impedances. But, give it a try - you're not going to hurt anything.
Almost all integrated amps and recievers just use the pass-through method, thus the paralleled inputs WILL be an issue.
You need one or more distribution amps.
This one from Radio Shack is overkill (http://www.radioshack.com/product/index.jsp?productId=2783643&cp), with all the component video stuff as well, but the component video stages can be ignored. I would loop each of the four outputs through two amps (each).
There are other and older distribution amps out there that just have the red (r.audio), white(l.audio) and yellow (composite video) jacks, most are 1:3 distribution fanout, but they ARE cheaper. Don't be confused by the other type of common distribution amp, which is for antenna systems and RF signals.
stuartk 07-03-2007, 01:25 PM Almost all integrated amps and recievers just use the pass-through method, thus the paralleled inputs WILL be an issue.
In a worst-case scenario, you could even blow up the output section of the CD player.
You need one or more distribution amps.
Agreed. That Radio Shack one looks like just the ticket.
Vitopanch 07-04-2007, 10:12 AM Thanks yall. Very helpful information and support.
Vito
luvvinvinyl 07-04-2007, 10:37 AM Parts Express has some audio distribution amps, up to 1-in, 9-out.
stuartk 07-05-2007, 10:18 AM Parts Express has some audio distribution amps, up to 1-in, 9-out.
The CE Labs ones?
I looked at those, and they're more expensive than the Rat Shack one. They might be better for video, but if you just need audio the RS one seems to be a very good deal.
One nice thing about Rat Shack is that you can get it locally, try it, and return it if it doesn't work. Parts Express is going to cost you the shipping charges both ways if you need to return it.
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