The SA-DR9 replacement diaphragm keeps your Selenium D250-X horn drivers performing at full capacity when the original diaphragm fails or wears out. Built specifically for compatibility with the D250-X driver, this 8-ohm replacement delivers the same performance as the original factory component.

This diaphragm restores full high-frequency output to your PA system, ensuring vocals and cymbals cut through the mix with proper clarity and projection. The 4-inch diameter design with 2-inch voice coil matches OEM specifications exactly, maintaining the driver's original frequency response and power handling characteristics.

The lightweight 0.04-pound diaphragm installs directly into your existing D250-X horn driver assembly without modification. This makes field repairs quick and straightforward, whether you're dealing with a blown diaphragm at a venue or performing routine maintenance in your shop. The 8-ohm impedance matches standard PA system configurations, ensuring proper load matching with your amplifier.

Live sound engineers and touring musicians rely on these replacement diaphragms to keep horn-loaded PA systems operational. Whether you're running line arrays at festivals or point-source rigs at clubs, having spare diaphragms on hand prevents costly downtime when horn drivers fail mid-show.

Installation requires basic tools and takes just minutes per driver. The diaphragm comes ready to install with no additional components needed. Seismic Audio backs the SA-DR9 with a one-year warranty and ships fast so your system gets back online quickly.

Technical Specifications

Frequently Asked Questions

Will this diaphragm work with other horn driver models besides the Selenium D250-X?

No, the SA-DR9 is engineered specifically for the Selenium D250-X horn driver and will not fit other driver models. The mounting dimensions, voice coil diameter, and impedance are matched precisely to the D250-X specifications. Using this diaphragm in non-compatible drivers can result in poor fit, damaged components, or unsafe operation.

How do I know if my horn driver diaphragm needs replacement?

Common signs include distorted high frequencies, reduced output volume, crackling sounds, or complete loss of high-frequency response. If your horn driver sounds muffled or produces rattling noises at normal operating levels, the diaphragm has likely failed. Visual inspection may reveal tears, dents, or separation in the diaphragm material.

What tools do I need to install this replacement diaphragm?

Installation typically requires a Phillips head screwdriver to remove the horn driver's back plate and access the diaphragm assembly. Some D250-X drivers may use different fastener types, so have basic hand tools available. The process takes 5-10 minutes per driver and requires no special equipment or soldering.

Can I use this 8-ohm diaphragm if my system is wired for 16 ohms?

Only use this diaphragm if your original D250-X driver was 8 ohms. Mixing impedances can create load imbalances that damage your amplifier or other drivers in the system. Check your original driver specifications or measure the impedance with a multimeter before ordering replacement parts.

How long can I expect this replacement diaphragm to last?

With proper use within the driver's power rating and frequency range, the SA-DR9 diaphragm should provide years of reliable service matching the original component's lifespan. Factors like excessive power, physical damage, or operating outside specified parameters will reduce service life. Regular system maintenance helps maximize component longevity.

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