Crown D-Series Bridge Mono Modification - diyAudio
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Old 5th February 2009, 12:03 PM   #1
dakine is offline dakine  United States
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Default Crown D-Series Bridge Mono Modification

Hello,

Anyone know how to change a Crown D-series amp (like D-45) from stereo mode to bridged mono?

According to the manual, this must be done by a crown service center.

Thanks!
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Old 5th February 2009, 03:08 PM   #2
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essentially you connect a resistor from one channels o\p to the other channels - i\p, and short this amps +i\p to ov, how its done in a particular model depends on the layout etc, the resistor value is the f\b resistor that sets the gain of each channel, you would need service\circuit datails unless someone has done it before
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Old 5th February 2009, 04:53 PM   #3
llwhtt is offline llwhtt  United States
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Try checking the Crown website, all discontinued products service manuals are available online for free. The stereo to mono conversion should be in the manual.

Craig
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Old 5th February 2009, 05:34 PM   #4
HK26147 is offline HK26147  United States
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http://www.fullcompass.com/common/fi...UserManual.pdf

Check Appendix A:
( I guess it's up to you if you want to void any warranty )
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Old 5th February 2009, 06:50 PM   #5
dakine is offline dakine  United States
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Thank you!

I found the same manual on Crown's web site, but it did not contain the appendix A, which describes the jumpers.

I also emailed Crown, who sent me a response in less than 5 minutes describing the same procedure.

-David
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