AKG 2955M06020 - Circuit board assembly for AKG CHM 21 and CHM 99 pendant microphones

AKG 2955M06020 - Circuit board (PCB) assembly for CHM21 and CHM99 pendant microphones

The AKG 2955M06020 is the original PCB Assembly for the AKG CHM21 and AKG CHM99 pendant microphones. This OEM replacement replaces the microphone's internal electronics when they have been affected by moisture, shock or component failure, maintaining the tolerances, routing and reliability specified by the manufacturer. Its compatibility is documented by official distributors and spare parts catalogues, and is ideal for restoring units used in fixed installations (theaters, auditoriums, houses of worship, conference rooms) without altering the acoustic performance or system response.

The 2955M06020 assembly is part of the condenser microphone's electronics and works in conjunction with the cable and phantom power adapter used with the CHM series. Because it involves handling delicate components, it is recommended that you have it replaced by qualified service personnel following the manufacturer's service guidelines.

Main features

• Original AKG (OEM) replacement for CHM21 and CHM99 hanging microphones.
• Part number: 2955M06020.
• Designation: PCB Assembly.
• Compatibility verified in authorized dealer spare parts lists.
• Complete restoration of the internal electronics associated with the microphone preamplifier.
• Exact fit without modifications, with factory-quality connectors and fasteners.
• Supply unit: 1 assembled PCB (does not include capsule, housing, cable, or external adapter/ac.).
• Recommended installation: qualified technical service.

Product benefits

• Restores the functionality of CHM21/CHM99 microphones with electronic failures or damage due to intensive use.
• Maintains the response and noise level expected from the original AKG design.
• Minimize downtime in fixed installations and rental fleets without having to relocate or reconfigure the system.
• Guaranteed compatibility : specific spare part for these models, avoiding undocumented adaptations.

Use cases

• Repair of CHM hanging microphones in auditoriums, churches, theaters and conference rooms.
• Corrective maintenance for intermittent failures, excessive noise or loss of signal.
• Equipment reconditioning for AV integration and rental companies.

Frequently Asked Questions

• Does this include the capsule or the 10m cable? No. This reference corresponds only to the assembled PCB .
• Does it work with both CHM99 colors (black/white)? Yes. Compatibility is with the CHM99 model in general; the case color does not affect the PCB.
• Is it necessary to recalibrate the microphone after replacing it? Typically, no. Proper installation returns the microphone to factory specifications.
• Does it run on standard phantom power? The CHM21/CHM99 operate on 9–52 V phantom power , according to the product documentation; the PCB is part of that power and audio chain.

Description for projects

Original AKG PCB Assembly for CHM21 and CHM99 pendant microphones; reference 2955M06020 ; supply: 1 unit; OEM spare part for restoring internal electronics; compatible with systems using 9–52 V phantom power (according to CHM microphone specifications).