Line Level / dual power supply

Hardware questions and issues with the FV-1

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amongstmyselves
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Line Level / dual power supply

Post by amongstmyselves » Wed Dec 13, 2017 10:54 pm

Howdy all,

I'm a little confused. (Nothing new). I'm wanting to incorporate a SKRM module into a line level project but I'm getting a little lost. Correct me if I am wrong but the mixer applications on the Spin web site ie: 3k , 16_24, don't have any biasing for the audio whereas the schematics for the SKRM-C8-xxx all have biasing of the audio signal.

Any ideas why this is ?

Which reference should I use ?

The project that I am plan to use the SKRM module in runs with a dual 12v opamp arrangement. From my calculations I'll need rebias the output from the SKRM. Any hints ?

Any leads will be greatly appreciated,

Steve.

frank
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Post by frank » Thu Dec 14, 2017 9:10 am

It really depends on your target product. The SKRM example schematics assume that the input is a signal that needs a bias to be in range for the FV-1, other schematics may assume no bias is needed. You need to look at your application and the sources to the device and decide how to handle it. Generally I add bias.
Frank Thomson
Experimental Noize

amongstmyselves
Posts: 11
Joined: Thu Oct 08, 2015 2:59 pm
Location: Blackwood, South Australia
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Post by amongstmyselves » Thu Dec 14, 2017 2:57 pm

thanks for the reply Frank, your info helps. I also read up some more on biasing so I should be able to figure this all out.

Steve.

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