The SA-DR8 is a direct replacement diaphragm for sound engineers and venue technicians maintaining JBL compression driver systems. When your JBL 2425, 2426, 2427, or 2420 compression driver fails, this 8-ohm diaphragm gets your PA system back online without the cost of a complete driver replacement.

This replacement diaphragm restores full high-frequency response to damaged compression drivers, delivering the same performance as the original JBL component. The 2.95-inch diameter diaphragm features a 1.75-inch voice coil that matches JBL's original specifications exactly.

Built with 8-ohm impedance matching JBL's factory specs, the SA-DR8 maintains proper load characteristics for your amplifier and crossover network. The lightweight 0.07-pound construction ensures minimal impact on horn loading while providing reliable high-frequency reproduction. Precise dimensional tolerances guarantee proper fit in JBL compression driver assemblies.

Essential for maintaining church sound systems, concert venues, and mobile DJ rigs that rely on JBL compression drivers for vocal clarity and instrument presence. Whether you're servicing a single monitor wedge or a full line array system, having spare diaphragms prevents costly downtime during critical events.

Installation requires basic compression driver disassembly and reassembly knowledge. The diaphragm includes mounting hardware and connects directly to existing voice coil leads within the driver assembly.

Seismic Audio backs the SA-DR8 with a one-year warranty and ships replacement parts quickly to minimize system downtime when your sound depends on it.

Technical Specifications

Frequently Asked Questions

Which JBL compression drivers is the SA-DR8 compatible with?

The SA-DR8 works as a direct replacement for JBL 2425, 2426, 2427, and 2420 compression drivers. These drivers are commonly found in JBL professional loudspeakers, monitor wedges, and horn-loaded PA systems. The diaphragm maintains the same 8-ohm impedance and dimensional specifications as the original JBL parts.

How do I know if my compression driver needs a diaphragm replacement?

Common signs include distorted high frequencies, reduced output volume, crackling sounds, or complete loss of high-frequency response. If your compression driver produces no sound or sounds muffled compared to other speakers in your system, the diaphragm likely needs replacement. Physical inspection may reveal tears or damage to the diaphragm material.

Can I install this diaphragm myself or do I need professional service?

Installation requires disassembling the compression driver, which involves removing screws and carefully handling delicate components. While technically feasible for experienced technicians, improper installation can damage the driver permanently. If you're not familiar with compression driver internals, professional repair service is recommended to avoid costly mistakes.

Will this diaphragm affect my system's sound quality compared to the original JBL part?

The SA-DR8 is manufactured to match JBL's original specifications for impedance, dimensions, and frequency response characteristics. When properly installed, it should restore your compression driver to original performance levels. The sound quality will be indistinguishable from a factory JBL diaphragm in most applications.

How long can I expect this replacement diaphragm to last?

With proper use within the compression driver's power handling limits, the SA-DR8 should provide years of reliable service similar to original JBL components. Lifespan depends on power levels, duty cycle, and environmental conditions. Avoid overdriving the system and protect from moisture to maximize diaphragm life.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov