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Old 14th July 2012, 04:18 PM   #1
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Default Schematic help for a Pilot 505 amp please

I have looked in all the usual places and can't seem to find one? Pilot 505. It has a 5AR 4,-4-,EL84's-and 2, 12AX7's.
Thanks for any help you may have.
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Old 14th July 2012, 07:35 PM   #2
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Pilot favored paraphase splitters. Maybe that clue can help you trace things out for yourself.

What sort of features, like tone controls or a phono section, does the unit have?
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Eli D.
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Old 14th July 2012, 08:00 PM   #3
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I have to guess the circuit is similar to the Pilot SA-232 amp minus the 12AU7 input stage. Use the 232 as a reference to see if it's close enough.

Here's schematic of the Pilot SA-232.
Click the image to open in full size.
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Old 15th July 2012, 12:31 AM   #4
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Quote:
Originally Posted by Eli Duttman View Post
Pilot favored paraphase splitters. Maybe that clue can help you trace things out for yourself.

What sort of features, like tone controls or a phono section, does the unit have?
None
I got this as pure amp chassis only.
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Old 15th July 2012, 12:33 AM   #5
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Quote:
Originally Posted by directdriver View Post
I have to guess the circuit is similar to the Pilot SA-232 amp minus the 12AU7 input stage. Use the 232 as a reference to see if it's close enough.

Here's schematic of the Pilot SA-232.

T

Thanks directdriver!!
This at least will give me a starting point as most Mfg. used a lot of similer circuits when using the same tubes.
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Old 15th July 2012, 05:10 AM   #6
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Here's a bigger picture of the schematic of the Pilot SA-232 so it's easier to read:
Click the image to open in full size.
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Old 15th July 2012, 02:27 PM   #7
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Thanks again directdriver. This looks to be very close!
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