Balanced Isolation Transformers

  • Thread starter Thread starter djchris73
  • Start date Start date
djchris73

djchris73

Backyard DJ
Who knows what they're for? (I do, just found out today.)

Who's got 'em?

How much you pay for 'em?

Where'd you get it from?

Where can I get a cheap one? (not much of a selection on eBay.)

Come on, let's talk about, people.
 
The cheapest ones that pass up to 18khz with no phase shift is the ProCo's. I think around $35 each. You can jump up to Jensen's which will pass 20Khz with no phase shift for around 40% more each!

They are great for splitting a mic signal to two preamps where ground issues might be a problem. There is a good chance that just having a ground lift would solve any ground problems, but a bridging transformer will solve other problems too.
 
djchris73 said:
Who knows what they're for? (I do, just found out today...
Click to expand...
What have you found out about them?

I have a massive snake full of them, but with more modern mixers, I don't know that I really need them anymore.

(Although, the last time I recorded live I wish I had brought it. Just because of the way we patched in prior to the monitor mixer.)

RD
 
I just bought a cheapo Rapco SS100i signal splitter. You can find them for $30 bucks usually. I use it to prevent phantom power from hitting my ribbon mic. My gear isn't top shelf enough for me to hear any signal degradation, so as far as my basement is concerned there is no change in the sound.
 
Ford Van said:
The cheapest ones that pass up to 18khz with no phase shift is the ProCo's. I think around $35 each. You can jump up to Jensen's which will pass 20Khz with no phase shift for around 40% more each!

They are great for splitting a mic signal to two preamps where ground issues might be a problem. There is a good chance that just having a ground lift would solve any ground problems, but a bridging transformer will solve other problems too.
Click to expand...
Is there also a low freq. spec for level or satuation? (Maybe that's for a different application?)
Wayne
 
mixsit said:
Is there also a low freq. spec for level or satuation? (Maybe that's for a different application?)
Wayne
Click to expand...

0dBu for mic level, up to +20dBu line level, at 20Hz.
 
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