ZXPC Diaphragm Replacement for P Audio BMD 740/750 - Titanium Repair

In this review the ZXPC Diaphragm Replacement for P Audio BMD 740/750 is evaluated as a direct repair option for owners of compatible compression drivers and Turbosound horn drivers. The bottom line: this replacement diaphragm is for technicians and DIY audio enthusiasts who need a durable, precise diaphragm with a titanium cone and correctly sized voice coil to restore high-frequency performance. Our review finds it especially useful when rebuilding series 1 P Audio drivers or refreshing worn Turbosound TXM units where original specifications matter.

Key Features

• Titanium diaphragm: provides a rigid, lightweight radiating surface that helps retain clarity and transient response when replacing an aged diaphragm.
• Overall diameter 4.31 in: matches the original flange size for straightforward mounting in compatible drivers and minimizes installation fit issues.
• Voice coil diameter 2.87 in: maintains the intended magnetic coupling and excursion behavior to preserve the driver tuning and tonal balance.
• Nominal impedance 8 ohms: ensures electrical compatibility with the original crossover and amplifier expectations in typical PA and monitor setups.
• DCR 6.2 ohms: gives a concrete DC resistance value for technicians checking continuity and matching replacement parts during repair.

Who It's For

This replacement is aimed at audio technicians, live sound engineers, and informed hobbyists who service P Audio BMD-740/750 series 1 drivers or a range of Turbosound TXM and RD series mid/high units. If a compression driver shows signs of torn or fatigued diaphragm material and the measurements match, this part restores mechanical integrity and acoustic performance.

Those who should look elsewhere include owners of non compatible series or drivers with different mounting dimensions, or users seeking a complete driver swap rather than a diaphragm repair. It is not a universal part and requires basic speaker repair experience to install correctly.

Pros & Cons

Pros

• Direct replacement for multiple P Audio and Turbosound models, reducing downtime for repairs.
• Titanium construction offers a good balance of stiffness and low mass for clear high-frequency response.
• Exactly listed mechanical and electrical dimensions help ensure compatibility for technicians.

Cons

• Compatibility is model- and series-specific, so incorrect ordering is possible if measurements are not verified first.

Specifications

Diaphragm material	Titanium
Overall diameter	4.31 in (110 mm)
Voice coil diameter	2.87 in (73 mm)
Nominal impedance	8 ohms
DCR	6.2 ohms
Compatible P Audio models	BMD-740, BMD-750, BM12CX38, BM15CX38 (series 1)
Compatible Turbosound models	TXM-15M, TXM-252, TXD-15M, CD 210, CD 212, RD 210, RD 212

Our Verdict

The ZXPC titanium diaphragm is a pragmatic, cost-effective repair part for those maintaining P Audio series 1 and many Turbosound horn drivers. It preserves the original electrical and mechanical characteristics and is a sensible choice when dimensions match; technicians will appreciate the clear specs and durable titanium construction for restoring high-frequency clarity.

Frequently Asked Questions

Will this diaphragm fit my BMD-750?
It is listed as compatible with BMD-750 (series 1); confirm the overall and voice coil diameters match your driver before buying.

What material is the diaphragm made from?
The diaphragm uses titanium, selected for stiffness and low mass to maintain transient response.

Is this a full driver replacement?
No, this is a diaphragm replacement only and requires installation into an existing compression driver or horn driver assembly.