Passive line filter (Oris Horns)

by diy martin , Sunday, December 09, 2007, 21:43 (5976 days ago) @ Bert
edited by unknown, Sunday, December 09, 2007, 21:56

Bert,

I came to this set-up because I was so stupid to buy a set of expensive
output transformers for my new tube amp with a bandwide of up 100hz
The pre-amp has an extra gain of 10 for the bass amps, gain is no problem.
Mattijs advised 20x resistor value and of course 20 times less for the capacitors.
If I put the filter between the buffer and the bass amp the output impedance of the buffer is 600 ohm, the input impedance of the bass amps are approx. 20K ohm , but there is a possibility to increase this to 50Kohm.

Martin.

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