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|25th August 2006, 12:04 PM||#1|
Join Date: Aug 2006
Croft Super Micro meets Acoustat TNT200
Hello DIY fans,
I'm just changing power amps from a Sugden AU51P to a Acoustat TNT200 and I want to match the input impedance of the TNT200 to the output impedance of my Croft Super Micro - hopefully to give best power throughput / sound.
Can I please ask a few amateur questions?
What are the current output impedance of the Croft and input impedance of the TNT200? (I have no manuals).
How can one measure the values?
There is a specification for doing output impedance for a car amplifier at http://www.bcae1.com/outptimp.htm and a circuit for the Croft at http://www.soton.ac.uk/~apm3/diyaudi...I_circuit.gif. I can't see anything for thr TNT200's input impedance.
How would one change the output impedance of the Croft. I assume it would be done in the circuit after the ECC82? or is this a function of the valve itself?
Totally seperately does anyone know a source of high quality (e.g. PEC, Alps) 1M ohm pots as I can't find anything at that value and mine are "crunchy".
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