Alpha potentiometers are among the world's most widely used guitar tone and volume controls. These are the familiar pots we've supplied for years in 25K, 250K, 500K, and 1 meg-ohm versions, plus a long-shaft 500K version for Les Paul style carved-top solidbodies. Great prices, too—luthiers and repair shops can save big on orders of 50 or more.
Each pot has an aluminum split shaft that fits a coarse-knurled (18-spline) knob.
See details below
Alpha pots are audio taper with standard ±20% resistance tolerance. Each pot includes a flat washer, lock washer, and two hex mounting nuts for custom height adjustment on a pickguard or control plate.
#3755 25K-ohm For controlling the volume or tone of active pickups, or for use after the preamp of a piezo-saddle transducer bridge.
Shaft diameter
6mm split shaft, coarse knurling
Thread
M8 x 0.75
Threaded portion height
3/8"
(9.52mm)
Required mounting hole diameter
5/16"
(7.94mm)
#0128 250K-ohm & #0130 500K-ohm 500K pots are standard controls for humbuckers, and 250Ks are usually used for single-coil pickups. A 250K gives a slightly warmer tone than a 500K, and bleeds off (attenuates) some of the high frequencies to ground. A 1-meg pot attenuates even less than a 500K—try one if you want to hear your guitar "wide open."
Shaft diameter
6mm split shaft, coarse knurling
Thread
M8 x 0.75
Threaded portion height
3/8"
(9.52mm)
Required mounting hole diameter
5/16"
(7.94mm)
#3482 500K-ohm, long shaft pot
For Les Paul and similar solidbody guitars.
Shaft diameter
6mm split shaft, coarse knurling
Thread
3/8" x 32
Threaded portion height
3/4"
(19.05mm)
Required mounting hole diameter
3/8"
(9.52mm)
#3481 1 Meg-ohm Get the most out of your guitar with a 1 Meg-ohm pot. All pots bleed a certain amount of the signal to ground, this "attenuation" can be used to warm the sound of your guitar's pickups, but you can also run your guitar "wide open" with these 1 Meg-ohm pots!
Shaft diameter
6mm split shaft, coarse knurling
Thread
3/8" x 32
Threaded portion height
3/8"
(9.52mm)
Required mounting hole diameter
3/8"
(9.52mm)
Which pot value should you choose?
500K pots are standard controls for humbuckers, and 250Ks are usually used for single-coil pickups. A 250K gives a slightly warmer tone than a 500K, and bleeds off some of the high frequencies to ground. A 1-meg pot bleeds off even less than a 500K—try one if you want to hear your guitar "wide open."
1-meg pots are also ideal for piezo pickups, as the ultra high impedance piezo element is more adversely effected by conventional, lower-value pots than magnetic pickups.
25K pots are for controlling the volume or tone of active pickups, or for use after the preamp of a piezo-saddle transducer bridge.
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