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Re: I agree with Jeff; I think...

Posted by Lew (A) on May 23, 2006 at 07:20:22

In Reply to: Re: I agree with Jeff posted by Analogtheo on May 23, 2006 at 00:18:24:

After stating that I agreed with Jeff and upon further examination of the schematic, I too am a little puzzled by the circuit. Clearly, as you and Ralph suggest, there is a resistor (can't see the label) in parallel with the "coupling" caps. This would mean that some of the DC plate voltage on the EF184 will indeed be seen on the grid of the following 6C33C, depending upon the value of that resistor and the current. On the other hand the schematic also shows that the plate of the EF184 appears to be connected to what I think is the bias supply for the 6C33C, thru that very same resistor and cap, in parallel. Either the schematic has an error, or I don't understand how the amp works, or both. Nevertheless, the caps in question would affect the sound. What is their value (C1L and C2L, I think)?

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