600:600 mic input?

This is a little unclear to me......

Would using a 1:1 input transformer degrade noise performance much in a BJT input mic pre?

Seems to me like the "non transformed" impedance of a BJT input is already a pretty good match.... :?

A Neve mic in is only 1:2, right?
So I do not think you would suffer much with a 1:1.
UTC has the dual coil-humbuckers, but not in Ni.
Triad and Peerless have the Ni, but not the humbucking.
So open up a UTC and relam it with some 31 DU in Supermaloy.
Or just get a Marinair input.

If your trying to see if something you have laying under the coffee table will work, just plug it in.

Was that Tamura I took apart a 600:600?
If so, that would be the ticket.
Ni dual coil jobby.
Big L lams, like UTC LS series.

If your trying to see if something you have laying under the coffee table will work, just plug it in.

Click to expand...

Now that i think about it, i do have some crappy transformers in the drawer.......

WAIT..... what about shielding?

I´m gonna need that Mu-metal regardless, right?

If you mount the transformers far away from the PSU/power transformers, and use some big steel to shield both the mic trans and the power trans, you could get away with no mumetal...

Look into the spectrasonics for a nice mic preamp using 1:1 trafo.

Thanx, rafafredd.

The spectrasonic is.....interesting.......to say the least.

http://www.technicalaudio.com/a2z/S/SpectraSonics/SpectraSonics_110A_sch.pdf

Common base. :shock:

I wonder why......