Re: Audio baluns for sound card input?

From: J M Noeding (la8ak_at_online.no)
Date: 03/26/05 

Date: Sat, 26 Mar 2005 17:04:49 +0100

On Sat, 26 Mar 2005 15:35:11 GMT, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

>1: I did this because it was usually the only decent audio transformer
>available when I needed to build another interface in a hurry. I just
>use the pair of pots when there is no hum problems. BTW, the highest
>wattage tap on the transformer has the lowest voltage. If you use the
>16 ohm winding and a 5 watt tap the voltage doesn't go up very much.
>The highest voltage is on the lowest tap, or 25 volts. Not only that,
>but the voltage only reaches 25 volts at the full rated output of the
>amplifier.
>
>2: A good 600 ohm to 600 ohm transformer can be expensive and hard to
>find in a hurry. I have a pile of crappy mil spec 600 ohm to 600 ohm
>transformers that roll off a little over 2.5 KHz and others that aren't
>much higher quality.

useful transformers are not difficult to find if you know how an audio
transformer looks like, you probably have a lot of equipment where
they are without considering it. Impedance is not important when the
equipment hasn't been made to a specific impedance

Jan-Martin 

---
J. M. Noeding, LA8AK, N-4623 Kristiansand
http://home.online.no/~la8ak/91n.htm

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