I have been thinking of building a preamp with a subwoofer output (tube of course), but wanted to do something better than tying the two channels together with resistors.
I came across some data on the UTC LMI-500 band pass transformer about a week ago and was wondering if that would be a good application. The transformer blocks anything above 500hz (at least this model does).
I am pretty sure that this was intended for use in RF, but I don't know if it is applicable to audio use. Has anyone here tried something like this just using a band pass device such as this "transformer"? I put that in quotes because it has to be more inside the potted case than just a coil.
I came across some data on the UTC LMI-500 band pass transformer about a week ago and was wondering if that would be a good application. The transformer blocks anything above 500hz (at least this model does).
I am pretty sure that this was intended for use in RF, but I don't know if it is applicable to audio use. Has anyone here tried something like this just using a band pass device such as this "transformer"? I put that in quotes because it has to be more inside the potted case than just a coil.
These are not transformers, but low-pass interstage LC filters. They are for use with audio frequencies and are essentially low power units with three terminals. (in-com-out) I suspect they are high impedance filters, but another catalog (1966 Radio Master) leaves it unclear as they could be 500/600 ohms like some models are. I use a type BMI-1000 bandpass unit in my large industrial tube tester to eliminate hum in the amplified 1KHZ signal.
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