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Pre Amp to drive BeoLab 8002

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StephenH
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StephenH Posted: Mon, May 13 2013 11:25 AM

We've got a Cyrus ACA7 Pre amp connected to our BeoLab 8002.  Unfortunately, even though it works we cannot get the potential power from the speakers.  Has anybody got any ideas why not?  Any help would be appreciated.

 

Steve

stefan
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stefan replied on Mon, May 13 2013 11:52 AM

Would you tell us, how your preamp is connected?

Cyrus has different outputs with different levels as far as I know. BL8000 has Powerlink input and line in....

Stefan

StephenH
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StephenH replied on Mon, May 13 2013 12:05 PM

The Cyrus is connected using the line input to the speakers, with RCA plugs on the Cyrus output.

 

Steve

stefan
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stefan replied on Mon, May 13 2013 1:15 PM

As you can see in the manual the Cyrus outputs max. 380 mV via RCA - I think, BL8000 expects more than that:

http://archivedarchivedforum2.beoworld.org/forums/t/31655.aspx

So, I`d try the balanced output with 775 mV. You will have to short circuit pin 1 and 3 (negative and ground) because BL8000 inputs are unbalanced.

If your Cyrus is able to output a 4-5 V trigger signal you can use the Powerlink inputs of BL8000.

See http://www.beoworld.org/beotech/wiring2.htm

Hope this helps

Stefan

kallasr
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kallasr replied on Mon, May 13 2013 1:28 PM

stefan:

If your Cyrus is able to output a 4-5 V trigger signal you can use the Powerlink inputs of BL8000.

And there are cables (RCA + Trigger) to Powerlink as well.

Ralf

Living Room: Beosystem 4, Beolab 7-2 (Center), Beolab 9 (Fronts), Beolab 8000 (Rears), no Subwoofer. Screen: Sony KD-85XH9096
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