AKG 0021E05940 - AKG SPR4500 Volume Potentiometer

AKG 0021E05940 - Volume Potentiometer for SPR4500 (IVM4500) Bodypack Receiver

AKG reference 0021E05940 corresponds to the original volume potentiometer ( Volume-Pot ) used in the SPR4500 bodypack receiver of the AKG IVM4500 monitoring system. It is the part that governs the central on/off and volume control of the bodypack, so its replacement returns the feel, precision and attenuation travel to factory specifications. Being an OEM replacement, it ensures mechanical and electrical compatibility with the chassis and electronics of the SPR4500 (and the previous SPR4 model), fitting with the original nut and knob.

According to service documentation and technical distributors, this is a 10 kΩ stereo potentiometer with a logarithmic ( audio ) potentiometer and integrated switch , specifically designed for the receiver's stereo architecture. This is the recommended solution when the control exhibits noise, level jumps, mechanical looseness, or switch failure, typical of intensively used units.

Main features

• Original AKG replacement part for the ON/OFF + volume control of the SPR4500 belt-pack receiver.
• Electrical specification : 10 kΩ , logarithmic (audio), stereo , with integrated switch .
• Mechanical compatibility : shaft and fixing thread compatible with the original 3051Z11010 nut and 3051Z12010 knob .
• Board fit and wiring according to the SPR4500/SPR4 design, without modifications.
• Manufactured to factory tolerances to maintain linearity and balance between channels.

Compatibility and related references

• Compatible models : SPR4500 (IVM4500) and SPR4 (previous generation).
• Related knob : 3051Z12010 – associated volume knob.
• Fixing nut : 3051Z11010 .
• Display cover/color code and other front parts: see official parts list if a complete repair is required.

Product benefits

• Restore precise level control and ON/OFF switch operation.
• Eliminates noise and false contacts typical of fatigued potentiometers.
• Extend the lifespan of your IEM system by maintaining genuine AKG components.

Use cases

• Repair of SPR4500/SPR4 receivers with a hard potentiometer, with jumps or no ignition.
• Maintenance in rental companies, theaters , and broadcasting to ensure consistency between units.

Frequently Asked Questions

Does this potentiometer include the knob?
No. The handle is sold separately as 3051Z12010 ; the locking nut is 3051Z11010 .

Is it really stereo?
Yes. The SPR4500 is a stereo IEM receiver and the volume control is dual (two tracks) with logarithmic law , and integrates the power switch .

Can I assemble it myself?
Installation by qualified personnel is recommended to preserve tightness, welding and shaft alignment.

Description for projects

AKG 0021E05940 – Volume potentiometer ( Volume-Pot ) for AKG SPR4500 receiver ( SPR4 compatible); 10 kΩ , logarithmic , stereo , with integrated switch ; OEM replacement for the central ON/OFF + volume control of the IEM bodypack.