Piston Change RE-CONE KIT | MTX Audio JackHammer specification

PISTON CHANGE (RE-CONE KIT)

Along with the excessive SPL, MTX has created a replaceable cone assembly so the competition level of bass (done with the dual 2Ω voice coils) can be switched out with a dual 4Ω voice coil for every day listening with increased sonic quality and still be the same speaker with excessive high SPL. But since the installation of the JackHammer is a large investment in time and resources, the cone can be removed without removing the entire sub or enclosure.

Re-coning the woofer is surprisingly easy. No glue is needed, just bolts, and if you followed the enclosure design it can be done without taking the woofer out of the enclosure. Directions for either procedure follow.

To Re-cone the Woofer when Removed from the Enclosure

To remove the cone, unscrew the twelve 3⁄16" hex screws from the front gasket of the woofer and remove the gasket. Next remove the six 5⁄32" hex screws from the back of the spider plateau and loosen the tinsel leads at the terminal. The tinsel leads are the four 3mm hex screws at the top of the terminal that hold the voice coil wires. Gently pull on the cone under the surround and the cone assembly should pull away from the woofer motor. Be sure and pull evenly to prevent the assembly from binding in the basket. You are now ready to put in the new re-cone kit.

Place the new cone assembly into the woofer motor. Make sure to align the tinsel leads from the re-cone kit with the terminals and line up the large notches in the surround with the largest holes in the basket. Insert the tinsel leads into the terminal ensuring the red lead is going into the positive (+) position and the black lead is going into the negative (–) position. Tighten the four set screws and then slightly tug in the tinsel leads to make sure they are tight in the terminal.

Next, insert the six 5⁄32” hex screws back into the spider plateau and tighten. Replace the top gasket over the surround on the top of the woofer. The counter-bore holes in the gasket need to align with the smaller threaded holes in the basket. Insert the twelve 3⁄16" hex gasket screws into the counter-bored holes and tighten. Your new cone is now installed and you are ready to once again experience the JackHammer’s extreme bass!

To Re-cone the Woofer when Installed in the Enclosure

If you have made the back removable, as suggested earlier in this manual, you can remove the cone without removing the woofer from the enclosure. To remove the cone, unscrew the twelve 3⁄16" hex screws from the front gasket of the woofer and then remove the top gasket. DO NOT remove the T-30 wood screws because the gasket can be removed with these still in place. Next, remove the six 5⁄8" bolts from the back with a 15⁄16" wrench and pull off the back of the enclosure. Then, remove the six 5⁄32" hex screws from the back of the spider plateau and loosen the tinsel leads at the terminal. The tinsel leads are the four 3mm hex screws at the top of the terminal that hold the voice coil wires. Gently pull on the cone under the surround and the cone assembly should pull away from the woofer motor. Be sure and pull evenly to prevent the assembly from binding in the basket. You are now ready to put in the new re-cone kit.

Next, insert the six 5⁄32" hex screws back into the spider plateau and tighten. Replace the top gasket over the surround on the top of the woofer. The counter-bore holes in the gasket need to align with the smaller threaded holes in the basket. Insert the twelve 3⁄16" hex gasket screws into the counter-bored holes and tighten. Finally, replace the back of the enclosure and re-attach the 5⁄8" bolts to support the back of the woofer. Your new cone is now installed and you are ready to once again experience the JackHammer’s extreme bass!

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JackHammer specifications

The MTX Audio JackHammer is a powerhouse in the world of subwoofers, known for its sheer size, impressive performance, and engineering excellence. Developed for those who demand deep, thunderous bass, the JackHammer has carved a niche for itself among audiophiles and car audio enthusiasts alike.

One of the most striking features of the JackHammer is its massive 18-inch diameter. This size isn’t merely for show; it enables the subwoofer to move a significant amount of air, which is crucial for producing the deep bass that many listeners crave. The JackHammer is designed to handle high power levels, boasting an impressive RMS power handling capability, which ensures that it can deliver the loud bass without distortion even at high volumes.

Another standout characteristic of the JackHammer is its innovative design. The subwoofer features a high-temperature voice coil, which allows it to handle substantial power without overheating, thereby increasing the system's durability and reliability. The subwoofer also utilizes a dual voice coil configuration, allowing for flexibility in wiring and impedance that can be adapted to suit various system setups.

MTX Audio has equipped the JackHammer with advanced materials to enhance its performance. The cone is constructed from durable materials that resist flexing and distortion, ensuring that the sound produced is clean and precise. The heavy-duty rubber surround plays a vital role in maintaining the integrity of bass production, allowing for greater excursion and improved sound quality.

Additionally, the JackHammer is engineered for optimal efficiency with its specially designed magnet structure. The powerful magnet increases sensitivity and overall output, enabling it to produce maximum sound even with lower power input. This feature is particularly useful for those looking to integrate the subwoofer into different audio setups without compromising on sound quality.

For those who are serious about their car audio experience, the MTX Audio JackHammer stands out as an emblem of raw power and performance. Whether for competition use or personal enjoyment, this subwoofer combines size, innovative technology, and robust construction to create a bass experience that is truly dynamic and engaging. The JackHammer exemplifies MTX’s commitment to delivering high-performance products that cater to the needs of bass enthusiasts around the world. With its unmatched features and capabilities, the JackHammer proudly continues to set benchmarks in the world of subwoofers.