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how 'bout a remote volume control option ?-jim
I guess there is just 1 input and how many outputs in the back?
If there are any questions regarding our new preamplifier. please ask!
Quote from: Niteshade on 28 Mar 2009, 01:37 amIf there are any questions regarding our new preamplifier. please ask! Hi Blair,Thanks for the info on the volume pot.So what is the output impedance of the preamp? Is this inverting or non-inverting? Is it cap coupled at the output? Just curious why the different tube types? I always like to know what the engineer is thinking. Ray Bronk
Hello Ray, I forgot to answer your other questions:The volume pot tracks very well and provides excellent volume 'selection'. What I mean is, it's easy to dial in the exact volume you want. There are no rapid jumps, the volume doesn't become too loud with just a 1/4 turn as is the case with some equipment. Output impedance is 10K and it is non-inverting. The output is capacitor coupled. I can build this amp with either 12AU7's or 6SN7's. This is a customer's choice and doesn't effect the overall design much. More tubes can be added in parallel for a lower output impedance. Blair
Most amps I am aware of have an input impedance of 50K to 200K on average. You said yours is variable? I like the 100K's range. It seems to work the best.
Output impedance is 10K and it is non-inverting. The output is capacitor coupled. I can build this amp with either 12AU7's or 6SN7's. This is a customer's choice and doesn't effect the overall design much.
Quote from: Niteshade on 12 Apr 2009, 10:15 amOutput impedance is 10K and it is non-inverting. The output is capacitor coupled. I can build this amp with either 12AU7's or 6SN7's. This is a customer's choice and doesn't effect the overall design much. 10k output, 25dB gain... non-inverting... one tube per channel... interesting Is this a cathode-coupled circuit?