B&C Speakers MMD3A8M
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Information
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Manufacturer Information
B&C Speakers
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An Essential Component in the B&C Compression Driver Ecosystem
The MMD3A8M fits into the maintenance logic of sound reinforcement systems and stage monitors: rather than replacing a complete driver, this diaphragm allows targeted refurbishment after wear, overheating, or accidents (feedback, overload, unfiltered signal). It is designed for the mentioned B&C models and for the high-frequency section of certain coaxials, to restore the expected response and efficiency.
Who and When to Choose This Diaphragm?
This diaphragm is intended for sound technicians, rental companies, integrators, and musicians equipped with B&C horn-loaded speakers or coaxials who want to restore high-frequency performance. It is a relevant solution if you notice a loss of definition, distortion in the high frequencies, or a driver that has gone silent, while keeping the rest of the speaker in good condition.
Compatibility and Design: The "Performance Restoration" Goal
Direct Compatibility
The B&C MMD3A8M is announced as compatible with B&C Speakers compression drivers DE75, DE82, DE85, DE700, as well as with the high-frequency section of the 12CX32 and 15CX40 coaxials. For reliable repair, it is recommended to respect the exact reference and impedance, and to work carefully (centering, surface cleanliness, final low-level testing).
Titanium and 75mm Voice Coil
Thanks to its titanium diaphragm and 75mm voice coil, this model aims to achieve clear and stable high-frequency reproduction, consistent with the expectations of compatible drivers. Once properly installed, it restores tonal balance and intelligibility, essential in both sound reinforcement and fixed installations.
Technical specifications
| Rackable | No |
| Category | speaker |
| Type | Speaker Spare Parts |
| Nominal impedance | 8 ohms |
| Diaphragm material | Titanium |
| Voice coil diameter | 75mm |
| Compatible with | B&C Speakers DE75, DE82, DE85, DE700 |
Questions frequently asked
Is the B&C Speakers MMD3A8M diaphragm compatible with the DE85 driver?
This diaphragm is listed as compatible with B&C Speakers compression drivers DE75, DE82, DE85, and DE700, with a nominal impedance of 8 ohms.
Can this diaphragm be mounted on a B&C 12CX32 coaxial?
The high-frequency section of the B&C 12CX32 coaxial is among the intended applications. The 15CX40 coaxial is also cited as a compatible reference.
What is the voice coil size of the MMD3A8M?
The coil has a diameter of 75 mm. The diaphragm is made of titanium.
What symptoms may indicate that a high-frequency diaphragm needs to be replaced?
A loss of definition in the high frequencies, distortion, or a silent driver may indicate a need for replacement. This diaphragm allows replacing the affected part without changing the complete driver. Feedback, overload, or an unfiltered signal can cause the failure.
How is a replacement diaphragm for a B&C driver installed?
Careful mounting requires centering the diaphragm and cleaning the contact surfaces. A low-level test after installation verifies the driver's proper operation.
