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Old 1st May 2013, 09:58 PM   #11
philj is offline philj  United Kingdom
diyAudio Member
Join Date: Dec 2003
Location: england
Basically yeah the 550 is the better amp, but doesn't have the 5.1 rca input. The 500d only has this input, so I need to remove that section and fit it to the 550 if its possible without having to enter software and rework that?
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Old 1st May 2013, 10:49 PM   #12
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Join Date: Mar 2013
You would need the schematic, probably have to cut the proper circuit traces, add a six pole double throw switch or relays as well as adding or commandeering RCA's on the back of the 550. IOW a lot of work.

The only solution I can think of is to hook up the sound card to the 5.1 inputs on the 500. Hook up everything else to the 550 and then use a speaker level A/B amp selector. Something like using three Niles ABA-1D.
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Old 30th October 2013, 02:14 AM   #14
philj is offline philj  United Kingdom
diyAudio Member
Join Date: Dec 2003
Location: england
Finally picked up the 550 amp. Quite eager to get this sorted if it is possible.

Anyone have any ideas? Or anyone in the UK who could do this for me?
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