In Reply to: Input transformer and volume control posted by vetmedrobert@gmail.com on September 14, 2009 at 14:56:08:
Most transformers like to work into the load for which they are designed; otherwise the high frequency response can get off kilter. So usually you would us a transformer first (say, 10K to 10K ohms - a "bridging" transformer, in studio parlance), then a pot of matched impedance (i.e. 10K ohms). This also makes it easy to hook it up for a balanced line input.
Now you said "mic transformers" - not sure what you are thinking there. But if you have a low-impedance primary on the transformer, perhaps 600 ohms, you can find matched impedance attenuator which presents a 600 ohm impedance to its source and to its load; such an attenuator can go before or after a 600 ohm transformer winding because its impedance stays fixed.
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Follow Ups
- RE: Input transformer and volume control - Paul Joppa 20:53:09 09/14/09 (0)