MTX Audio Subwoofer Boxes and Enclosures

Sealed or Ported for an MTX Driver

On most brands this is a genuine toss-up. On MTX it is not, and the reason is the driver rather than the cabinet: a total Q of 0.58 or above means a sealed box is already working against the alignment before you shrink it. Here is the same driver in both.

Shared across both: Langboard Elite MDF cut on ShopSabre routers in Tullahoma, Tennessee. Plush black carpet. A gloss black acrylic baffle insert, or a plain baffle for twenty dollars less. One side-mounted Proline X ABS and carbon fibre terminal cup with stainless hardware, pre-wired in 12-gauge OFC. A threaded insert kit with stainless machine screws, not pre-installed, because MTX publishes no bolt hole circle for any model.

Every MTX Line We Cut For

MTX names its subwoofers by line and coil, and the coil is part of the model number. Each cabinet here is cut for one of them. If the model you own is not listed yet, the cabinet is still cuttable, because everything is machined to order.

35 Series, including the 04S shallow

The 3510-02, 3510-04, 3512-02 and 3512-04 all take a ported wedge, and the 3510-02 has a sealed one as well. The 3510-04S and 3512-04S are the shallow-mount versions with their own frame and mounting depth, so they get their own cabinets rather than sharing with the deep models. The 3510-04S has both alignments.

55 Series

The 5510-22, 5510-44, 5512-22 and 5512-44 are the dual-coil 10s and 12s. All four have a ported wedge, and the 5510-22, 5510-44 and 5512-22 have sealed too. The 55 Series 15s are the one gap here and it is deliberate: at the size a Proline X wedge can reach, their total Q of around 0.8 against a Vas near 6 cubic feet produces an alignment we are not willing to sell, so they are not listed.

75 Series

The 7512-22 and 7512-44 have both alignments. The 7515-22 and 7515-44 are the only 15s here, ported, and they are the deepest-reaching cabinets in the range at 2.56 cubic feet net tuned to 30 Hz.

S65 Series and Terminator

The S6510-44 and S6512-44 take ported wedges, with sealed for the S6510-44. The TN10-04, TN12-02 and TN12-04 are the Terminator line, all ported, with sealed for the TN10-04. The Terminators are the lowest-powered drivers here at 150 to 200 watts RMS, so the cabinet does proportionally more of the work.

Where These Sit in the Range

Every MTX cabinet is a wedge in the Performance Optimized series, which is the driver-matched build on a 1.5 inch double baffle. Browse by alignment in ported enclosures or sealed enclosures, or by size in 10 inch, 12 inch and 15 inch boxes. The full catalogue is on the subwoofer box hub and the enclosure finder.

We do not carry MTX drivers, but we do stock subwoofers in the same sizes if you are still choosing: 10 inch, 12 inch and 15 inch. A monoblock amplifier is the usual pairing for any of these cabinets.

Working From a Spec Sheet

If you want to check our arithmetic, or you are weighing a driver we have not built for yet, the subwoofer airspace calculator takes MTX's published figures directly. The EBP calculator and what EBP actually tells you cover the sealed against ported question from the driver's side, and what Qes means is worth reading before trusting any published Q figure.

One warning specific to this brand. The field MTX's website labels Volume Displacement is the swept air of the cone, not the displacement of the basket that a box calculation has to subtract. On the 5510-22 that is 0.02 cubic feet against a true 0.06, so a builder taking the webpage figure at face value undersizes the box. Take it from the Tech Data Sheet's displacement row instead, and where MTX publishes none, our product page says so.

If the MTX model you own is not listed, send us the model number, the alignment you want and the space you have. We cut to order, so it is usually a question of whether the alignment is worth building rather than whether we can build it.