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Old 2nd June 2012, 02:06 PM   #1
Karl71 is offline Karl71  United States
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Default "Tape Out" on DIY Passive Pre

I would like to add "tape out"-like jacks on my diy Goldpoint passive pre for a powered sub. Is it simply a matter of connecting them in parallel with the input jacks? Would there be a problem with impedence?


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Old 2nd June 2012, 02:48 PM   #2
Bonsai is offline Bonsai  Europe
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I suspect you may have loading and/or noise problems.
You need to buffer that thing.

In keeping with your passive pre, a minimalist solution would be a JFET buffer.
https://www.ovationhifidelity.com/ and DIY here http://hifisonix.com/
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Old 2nd June 2012, 02:57 PM   #3
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Feeding the Sub from the inputs of the passive preamp? You'll have no Sub level control.
The Sub should probably be fed from the outputs of the passive preamp.
Get a pair of "Y" cables and see how they work for you. At that time, you can decide whether you need a buffer.
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Old 2nd June 2012, 06:49 PM   #4
Karl71 is offline Karl71  United States
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My sub is self-powered and will accept line-level signals. I had the sub connected to the tape-out jacks on my old tuner-amp.


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