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Topic: A-B 500K J type pot |
Keith Bolog
From:
Wisconsin, USA
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Posted 22 Sep 2021 5:56 am |
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Not happy with the quieter smoother Dunlop taper maybe one of you is hoarding a pile and has an extra tnx
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Say what you mean. Mean what you say. |
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Ricky Davis
From:
Bertram, Texas USA
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Jerry Overstreet
From:
Louisville Ky
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Posted 22 Sep 2021 6:59 am
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FWIW, Those are only 500 ohm, not 500K ohms. [500,000 -- 1/2 meg.] I look for these regularly online, but have not really found anything except for a few used ones and I've got used ones already.
Be sure and read the descriptions thoroughly as they are sometimes confusing. Also the I.D. number stamp on the housing which I don't have handy at the moment.
Good luck and happy hunting. |
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Ricky Davis
From:
Bertram, Texas USA
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Cartwright Thompson
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Posted 22 Sep 2021 1:07 pm
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Which taper is preferred for a volume pedal, audio or linear ?
Seems to me it should be audio. |
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Ricky Davis
From:
Bertram, Texas USA
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Posted 22 Sep 2021 1:29 pm
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| Quote: |
Explanation of AB Type J part numbers, to aid in identification of surplus pots:
Example from above post: JA1N200P504AA
JA = Single section type J
(JS = single with switch, JD = dual, JB = dual with switch, JE = triple)
1 = Standard locating lug location
Facing the shaft, with solder lugs at bottom:
1 = Lug at 9 o'clock
2 = Lugs at 9 and 3 o'clock
3 = Lug at 3 o'clock
4 = No lugs
N = Plain bushing, 0.375" long
(Other options are for different bushing lengths, locking bushings, watertight bushings, etc.)
200 = Shaft length in inches (2) and 64ths (00)
056 would be 56/64" (7/8")
P = Plain round shaft ending
(S = slotted, F = flatted)
504 = Resistance 500,000 ohms (500k)
(The 4 indicates the number of zeros following the first two numbers. 254 is 250k; 105 is 1 meg.)
AA = The first A indicates taper and tolerance:
A = Clockwise modified logarithmic, +/-10%
R = Clockwise modified logarithmic, +/-20%
B = CounterCW modified logarithmic, +/-10%
T = CounterCW modified logarithmic, +/-20%
D = Clockwise exact logarithmic, +/-10%
K = Clockwise exact logarithmic, +/-20%
U, M, S, Y, C, and F are linear tapers
The last A just indicates what mounting hardware comes with the pot.
A = one mounting nut and one lockwasher
This info is from the 1981 AB catalog. |
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Ricky Davis
Email Ricky: sshawaiian2362@gmail.com |
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Keith Bolog
From:
Wisconsin, USA
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Posted 22 Sep 2021 6:01 pm Correct
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yes Ja1nxxxxx etc the real thing. The arent common but they exist. I onl want 1
Can cannabalize from lo time hi quality VP but prefer NOS. It shold last rest of mm natural life
keyboard fail the yoo not working
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Say what you mean. Mean what you say. |
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