Wireless Speakers - Will This Arrangement Ever Work?

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I have a Pioneer VSX-322 and the surround back speakers are connected from the Pre Out connections to the AUX input on a Mitsubishi M-P04 Pre Amp which is then connected to a Mitsubishi M-A04 Power Amp. The speakers are then connected to the Power Amp. This works fine.
However, I have an inexpensive wireless AV transmitter/receiver set which I would like to use for the SB speakers but if I connect the transmitter to the Pre Outs on the Pioneer and the receiver to the AUX input on the Pre Amp I just get a very loud hum from the speakers.
I know that the wireless set works OK because if I connect the transmitter to the AV outputs on my set-top box the audio comes out of the speakers just fine.
I'm sure that there is a very good explanation as to why this won't work. Could you please advise?
 
Solution
alyoshka
OK..... let me figure this out, the Audio Surround Back Pre Out RCA sockets are giving out too much power to the Wireless AV transmitter.... thus the Humm.... you need to get the Voltage down to 2.5mV from 1V....
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alyoshka

alyoshka

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Maybe there's too much of intereference from the Amp and Pre-Amp in that area.....
Also what you need to check is the amount of current that the pre-amp is pushing , could be a little more or a little less than what the "inexpensive wireless AV tramsmitter" needs, check it's documentation too....
Another thing is , the output from the "inexpensive AV receiver" , could be again a liitle too much or a little less than the input needed by the Amp.... check both documentations again....
Confirm.... and reply.

PS: Makes and models of all AV equipment is always an added advantage when requesting a solution since it helps us figure out what exactly may be wrong..... and provide a proper solution.
 
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Thanks alyoshka.

The Wireless AV set is a shop-brand (Dick Smith) and the manual (for what it is worth) gives very little information and certainly nothing about the amount of power it requires or uses to transmit correctly. The RF signal is transmitted at 5.8GHz, but I'm sure that is not the issue.
While I have the manual for the Pioneer, the only ones I can find for the Mitsubishi gear are in German (which I don't speak).
 
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Having posted this question on another Forum, the advice that I got was that Preouts aren't line level and that is why it won't work.

Do you think that there is likely to be any way to use the wireless set to send the sound to the SB speakers?
Using other equipment between the receiver and the speakers, perhaps?
 
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Thanks for the link.
Line Out on the PreAmp is connected to the input on the Power Amp.

Do you mean that I should use the wireless set to transmit from the Line Out on the Pre Amp to the Power Amp? Cos I tried that and only got humming.

 
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alyoshka

alyoshka

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This is the kind of cable you use to connect the line out from the pre-amp to the amp right?
DV020_Jpg_Jumbo_333025_coiled.jpg
 
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alyoshka

alyoshka

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Now instead of that you need to get two cable like this....
1rcamato2rca.jpg


So in the end you'll have 2 Red outputs and 2 white outputs coming out of the Pre-amp, right?
Now you can plug in the two reds into your Amp's line in and the white's into the AV Transmitter input....
 
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With you so far.
 
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Correct

 
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The outputs labelled SURR BACK PREOUT.
 
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Thank you - can you suggest a product that will do this.
 
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Well, for some reason this morning, the hum has gone to be replaced by very low audio from the source and a LOT of 'white noise'.

If I use a cable connection from the receiver to the PreAmp and then put the wireless set between the PreAmp and the PowerAmp, is that likely to work?
 
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alyoshka

alyoshka

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Can we look at this whole setup in a different way....
Let me see if I understand the concept of what you are trying to accomplish , correctly...ok?
You have a set of speakers lying around, you have an Amp and a Pre Amp (M-P04 Pre Amp & M-A04) with it to power them....
You have a source output the Pioneer AV rec..... (Surround )
Now , you don't want cable clutter between the AV Rec and the Surround Speakers which you plan to put at the back or sides of the room? but you want to Wireless'ly send the signal to those two rear surround speakers right? which inturn are being powered by the Mitsu Pre-amp and amp.... right which, I guess you have also planned on placing closer to the rear surround speakers which is across the room from the AV receiver... right?
 
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That is correct. We can leave the PreAmp out of the equation if you like. I only have it there to give me better volume control over the speakers.
 
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