AKG 3051Z12010 - Volume Knob for the SPR4500

AKG 3051Z12010 - Volume Knob for the SPR4500 (Original Replacement)

The AKG 3051Z12010 is the original volume knob/controller for the AKG SPR4500 bodypack receiver, part of the IVM4500 in-ear monitor system. Identified in the service documentation as “Knob” , it appears in the SPR4500 exploded view in position 9 , associated with the Volume-Pot (volume potentiometer) in position 8. Being an OEM replacement, it guarantees total compatibility, exact fit and the correct turning feel, restoring volume control when the original knob has been lost, broken or worn through use.

The SPR4500 is a professional diversity IEM receiver with dual antennas, so maintaining the level control in perfect working order is essential for reliable use in live, touring, and rental environments. This knob mounts on the shaft of the unit's volume potentiometer and does not include other control components (e.g., the potentiometer or locking nut), which are supplied separately according to the parts list.

Main features

• Official AKG replacement for the SPR4500 IEM receiver (IVM4500 family).
• Part number: 3051Z12010.
• Exploded view: Position 9 of the SPR4500 (Volume knob ).
• Associated with: Volume-Pot (Pos. 8, ref. 0021E05940) and Nut (Pos. 12, ref. 3051Z11010) as related control parts.
• Precise fit: fits directly onto the volume potentiometer shaft, respecting factory tolerances.
• Supply unit: 1 volume knob (does not include potentiometer or hardware).
• Recommended installation: by qualified personnel following the service procedure.

Product benefits

• Immediate restoration of level control when the original control is missing or damaged.
• Guaranteed compatibility as it is an AKG OEM replacement specific for the SPR4500.
• Finish and feel consistent with original equipment, maintaining the professional user experience.
• Documented maintenance according to the official parts list, useful for inventories and rental fleets.

Use cases

• Replacing lost or damaged knob on SPR4500 receivers.
• Tune-up of rental or touring equipment with wear on mechanical controls.
• Technical service repairs following the official parts list.

Frequently Asked Questions

• Is the volume potentiometer included? No. This reference refers only to the knob . The potentiometer (item 8, ref. 0021E05940) and nut (item 12, ref. 3051Z11010) are separate parts.
• Does it work with other AKG models? It's documented for the SPR4500 . There's no official confirmation of compatibility with other devices.
• Is it necessary to open the receiver for mounting? Depending on the damage, it can be mounted externally on the potentiometer shaft. If there are additional deformations or damage, service is recommended.

Description for projects

Volume knob for AKG SPR4500 IEM receiver; reference 3051Z12010 ; SPR4500 exploded view position 9 ; associated with volume potentiometer 0021E05940 (position 8); original AKG spare part; supplied: 1 unit.