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Gordon Anderson
Joined: 16 Apr 2012
Posts: 41
Location: Switzerland
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 Posted: Thu May 26, 2016 11:57 pm Post subject: Fwd: Impedance matching |
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Hi all,
I am trying to hook up audio outputs from a Garrecht TRX-1500 (3Vpp, 8 Ohm) and Dynon Skyview (10V, 50 Ohm, output volume controllable by software setting) into a PMA5000EX (510 Ohm, max 3Vpp input or "damage will occur").
Partial feedback from suppliers is confusing - according to PSE / ACS the Skyview should be OK if I hook it up directly (despite potentially much higher output voltage than the audio panel accepts), but the TRX-1500 is problematic. I am tending towards fitting a 470 Ohm trim pot across each output as a voltage divider using the wiper and common ground as input for the audio panel, more or less as proposed by Garrecht for a line level input. Can anyone tell me if I am on the right or wrong track?
Gordon Anderson
Switzerland, 41015
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Bob Turner
Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA
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| Posted: Fri May 27, 2016 4:31 pm Post subject: Re: Fwd: Impedance matching |
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Sounds like a good plan to me.
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Bob Turner
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