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Anyone with Harman A250 integrated- need resistor/pot values

GordonW

Speakerfixer
Subscriber
I'm trying to make sure I'm reading a (somewhat illegible) schematic properly...

Anyone who has a Harman-Kardon A250 integrated amp- would you mind looking under your amp, and let me know what the resistor values are in the cathode-bias circuit (around the balance pot) are? Also, what is the value of the pot itself?

Here's what I THINK they are... just want to make sure

Balance pot- 100 ohms?

Resistors connected from the balance pot to the output tube cathodes- 100 ohms in series with 330 ohms?

Resistors connected from balance pot to the grid pins of the output tubes- 330K ohms?

Also, I have a few in the power supply I'm not sure about.

Resistors between the 125uf/125uf caps and the 20uf/150uf can cap (20uf section)- two 68 ohm resistors in parallel?

Resistors between the 20/150uf can cap and the first stage of the 20/20/20/20 can cap- two 6.8K resistors in parallel?

Thanks for any help!!

Regards,
Gordon.
 
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Email sent. Many thanks, Tom!

I'd still like to hear from anyone who has one of these amps in-hand, though... just to make sure there weren't any "production updates" or whatnot, that changed things from the schematic. I like to know what my good options are, just in case!

Regards,
Gordon.
 
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