Can You Replace the Voice Coil in a TOA TU-652M Driver? Maintenance Tips & Solutions

Overview

The TOA TU-652M is a high-performance compression driver unit widely used in public address systems, factory paging, and outdoor horn speakers. Like all drivers, over time it may develop issues — most commonly related to the voice coil. So, the big question is:

Can you replace the voice coil in a TU-652M?
Yes — the voice coil can be replaced, provided you have a compatible replacement part and follow proper servicing steps.

This blog will guide you through when, why, and how to deal with a faulty coil, along with important tips for prolonging your driver’s life.

 

Common Signs of a Damaged Voice Coil

If your TOA TU-652M is showing these symptoms, it's likely the voice coil needs inspection or replacement:

• No sound output

• Distorted or crackling audio

• Intermittent sound cutoffs

• Unusual heat or burning smell from the unit

These issues typically occur due to overpowering, age-related fatigue, or moisture ingress.

 

 Can You Replace the Voice Coil?

Yes, you can replace the voice coil, but make sure:

1. The replacement coil is genuine or compatible with the TU-652M specs.

2. The driver diaphragm assembly is accessible and not fused to the magnet.

3. You or your technician are familiar with driver disassembly and reassembly.

Pro Tip: If you are unsure, consult a certified TOA service center brian 0163280755

 

Steps for Replacing the Voice Coil (General Guide)

 Disclaimer: Always power off and disconnect the unit before servicing.

1. Remove the driver from the horn or enclosure.

2. Unscrew the back cover of the TU-652M to access the diaphragm assembly.

3. Lift out the diaphragm + voice coil assembly.

4. Inspect for damage (burn marks, deformed coil, open circuit).

5. Replace with a new coil or diaphragm assembly — ensure alignment is perfect.

6. Reassemble and test before mounting back into the horn.
   
   Where to Get Replacement Coils?
   TOA DG30DB Voice Coil – Replacement Diaphragm Coil For TOA Compression Driver Units Selangor, KL, Batu Caves, Malaysia Event Lighting Equipment, Amplifier Speaker BG Sound & Light Sdn Bhd
   
    

   Conclusion

   The TOA TU-652M is a rugged, reliable driver, but like any speaker component, the voice coil can fail. The good news is: you can replace it, extend the driver’s life, and restore its full performance — saving cost and downtime.

   Need help sourcing parts or doing the replacement?
   Contact our team for support, service, or consultation.