Splitting turntable signal


Hi, here's what I am trying to achieve, please let me know if this is feasible at all.

I have a Rotel RP900 and Rega arm turntable, which goes into a Parasound P-100 amplifier. After this amplifier I would like to split the signal so that it goes to two different amplifiers in separate rooms:

(1) can this be done and what kind of splitter would I need? Assuming that I would not need both systems to be on at the same time, should I look into a switch rather than a splitter?

(2) what are the maximum recommended lengths after the amplifier (assuming this split which should be roughly...-3 dB?) that I could run?

Thanks a lot for all the help!
dantm

Showing 2 responses by viridian

The output of your phono preamp is at line level, so you can split the signal after the phono preamp as you have asked. A switch will be preferable. If you do not use a switch, the phono preamp will see the impedances of both preamps, this can end up being a complex interaction with the output impedance of the phono preamp not being low enough to drive the impedance presented by the combined input impedances of the two preamps. I think that Radio Shack has a basic switch that should be of help. You will still have the long cables loading down the phono preamp, but you would have had that either way.
In the good old days, when everyone used tape machines, some tape outs were buffered, they had their own amplifiers to drive just that output. Unfortunately, this is very rarely the case today, the signal just being passed along passively to the tape out, so you are still at the mercy of both input impedances. But, if you make the cables yourself from bulk wire, it won't cost too much to find out. I still think that the switch, while more inconvenient and costly, may be preferable, but you can certainly give it a try without and it won't cost you very much money.