Magnetic oil for tweeter and midrange coils. Quantity measured to voice coil size. One required for each driver.

Ferrofluid improves the performance of high frequency and midrange drivers. It works by damping the impedance at resonance to effectively lower distortion, smooth frequency response, and increase thermal power handling. Includes absorbent paper strips for removing old ferrofluid.

Ferrofluid is a functional material attracted to magnets and magnetized by external magnetic fields. In the 1960’s NASA Space Program, it was developed to transport fuel in zero gravity. Currently as used in speakers, ferrofluid improves the performance of high frequency and midrange drivers. It works by damping the impedance at resonance to effectively lower distortion, smooth frequency response, and increase thermal power handling. It should be used to replenish drivers treated previously with ferrofluid. With care, it can also upgrade most drivers that have never contained ferrofluid. The kits listed are approximate fill quantities relative to approximate voice coil diameters. In general, the air gap should be 75% filled prior to inserting a voice coil diaphragm assembly. The kit contains synthetic ester-based ferrofluids and in most cases should not pose any adhesive incompatibility. It is recommended that this is confirmed by contacting the driver manufacturer prior to usage. Adding ferrofluid to a driver not intended for it will, in most cases, void the original manufacturer's warranty. Included in kit: A ferrofluid packet, absorbent paper strips for removing old ferrofluid, detailed instructions, and material safety data sheet.

• Great for retrofit/replacement or new applications.
• Damps impedance at resonance.
• Reduces distortion.
• Conducts heat away from voice coil.
• Increases power handling capacity.
• Comes complete with cleaning strips and instructions.
• Sized to fit approximate voice coil diameters.

Note: The kit contains synthetic ester-based ferrofluids and in most cases should not pose any adhesive incompatibility. We recommend contacting the driver manufacturer prior to usage. As adding ferrofluid to a driver not intended for it will, in most cases, void the original manufacturer's warranty.