[sdiy] Balanced/unbalanced inputs?

[Dave Magnuson]

At 11:07 AM 3/12/02 -0500, media.nai at rcn.com wrote:
>At 8:30 PM -0500 03/11/02, DTK wrote:
>>
>>> To use an unbalanced line into a balanced input, you
>>> could try attaching the unbalanced line to one of the
>>> balanced lines, and ground the other side. This may
>>> work, but there's a problem: balanced inputs tend to
>>> be higher levels (+4 dBv) than the unbalanced ones
>>> (-10dBv).
>
>So turn up the gain :)
>
>>> Or you could go to Radio Shack and buy a
>>> unbalanced-to-balanced adapter for about $20.



Those Radioshack transformers sound pretty crappy.  The frequency response
is bad: instant telephone-sound.  I have an article somewhere by Scott
Dorsey.  It's a very simple FET-based balanced line driver.  He acutally
builds it on a tiny perfboard and mounts it inside of the case from one of
those Radioshack transformers.   Phantom powered IIRC.  If you need
details, email offlist and I'll try to find the schematics. 






Resonant Frequency:
resfreq at hoohahrecords.com
http://www.hoohahrecords.com/resfreq/index.html