Features

Enclosure Compatibility

Features

Cone Cosmetics and Materials: The woofer cone is made of Mica-filled polypropylene with an aluminum finish with 12 stiffening ribs for improved cone stiffness and higher mechanical power handling; the ribs increase cone durability and performance. Concentric rings are molded into the cone and dust cap surfaces to give them a machined appearance. "MTX Audio" is embossed on the poly dust cap.

12-leg Die Cast Aluminum Basket: The basket was built with the strength and stiffness required to handle the demands of enormous bass without flex or distortion.

Oversized Magnet Structure: This woofer has an oversized magnet structure, made with a 102 oz. Strontium Ferrite magnet.

NBR Rubber Surround: The woofer is made with a one-piece NBR (Nitrile Butadiene Rubber) surround and gasket combination. When bottom-mounting the woofer, the one-piece surround and gasket make an air-tight seal, to prevent any loss of performance due to air leaks around the woofer. When the woofer is top-mounted, the one-piece surround and gasket combination enhances the overall cosmetic appearance of the woofer. NBR has the added benefit of being resistant to ozone and UV rays for extreme durability.

Computer Optimized Progressive Roll Spider (COPR): A "five roll" spider design is used to maximize the linear region of the speaker's movement.

Four-layer Voice Coil: A 2.5" four-layer voice coil is used for higher power handling.

Spider Plateau Venting: Small vents are located around the base of the frame to prevent hot air from being trapped between the spider and the back plate. The vents help cool the voice coil to increase power handling and reliability.

Asymmetrical Linear Drive: This system improves linearity and permits high output with low distortion.

Extended Pole Piece: The extended pole piece provides a more symmetrical magnetic field.

Spring Post Inputs: The inputs are spring post connectors that will accept bare wire, tinned wire or wire terminated with pin connectors.

Enclosure Compatibility: This woofer can provide extended bass in sealed, vented and bandpass enclosures (see below for more information on enclosures).

Enclosure Compatibility

Recommended Sealed Box Volume: The sealed box sizes recommended by MTX range from 1.0 cu/ft to 2.0 cu/ft. The sealed enclosure MTX highlights on their spec sheet is a 1.0 cu/ft enclosure.

Vented Box Volume: The vented box sizes recommended by MTX range from 2.0 cu/ft to 3.0 cu/ft. The vented enclosure MTX highlights on the woofer specification sheet is a 2.0 cu/ft enclosure with a 4" diameter x 18" long port having a tuning frequency of 30 Hz.

Single Reflex Bandpass Volume: The bandpass box sizes recommended by MTX range from 1.13 cu/ft to 1.99 cu/ft. MTX highlights two bandpass enclosures on the woofer specification sheet. One highlighted enclosure has an "S" value of 0.5 and the other highlighted enclosure has an "S" value of 0.6. The highlighted bandpass enclosure with an "S" value of 0.5 is a 1.33 cu/ft enclosure with a sealed chamber volume of 0.4 cu/ft, a vented chamber volume of 0.54 cu/ft and two 4" diameter x 18.75" long ports. The enclosure with an "S" value of 0.6 is a 1.59 cu/ft enclosure with a sealed chamber volume of 0.48 cu/ft, a vented chamber volume of 0.78 cu/ft and two 4" diameter x 14.75" long ports.