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Schematic help for a Pilot 505 amp please
Schematic help for a Pilot 505 amp please
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Old 14th July 2012, 05:18 PM   #1
oldtexasdog is offline oldtexasdog  United States
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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, 08:35 PM   #2
Eli Duttman is offline Eli Duttman  United States
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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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Old 14th July 2012, 09:00 PM   #3
directdriver is offline directdriver  United States
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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.
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Old 15th July 2012, 01:31 AM   #4
oldtexasdog is offline oldtexasdog  United States
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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, 01:33 AM   #5
oldtexasdog is offline oldtexasdog  United States
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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, 06:10 AM   #6
directdriver is offline directdriver  United States
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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, 03:27 PM   #7
oldtexasdog is offline oldtexasdog  United States
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Thanks again directdriver. This looks to be very close!
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Old 18th July 2021, 01:57 AM   #8
old n in the way is offline old n in the way
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I believe I have schematic for that. Purchased some time ago. I will have to look for the right file, if you are still interested.
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Old 19th July 2021, 02:36 AM   #9
Tom Bavis is offline Tom Bavis
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Sams 632-10 covers it, I believe. As I read it, 505 is same as 500 amp except for power supply, shown in second sheet with preamp.
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File Type: gif Pilot_500_amp.gif (377.5 KB, 78 views)
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Old 19th July 2021, 02:39 AM   #10
Tom Bavis is offline Tom Bavis
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Preamp and power supply:
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File Type: gif Pilot_4505_preamp.gif (241.9 KB, 81 views)
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