Professional Series Ported 15" Enclosure Memphis Audio MOJO Pro 15 · Single 15" Ported enclosure

Memphis publish a Qts of 0.650 for the MJP1544, and the figure holds up: their Qes and Qms reproduce it, and Fs, Vas and Sd give back the moving mass they print. An EBP of 42.9 reads sealed on paper, so the vent is placed for the car rather than for an anechoic chart. At 32.5 Hz, F3 is 33.4 Hz with 2.66 dB of passband ripple, and with cabin gain the curve holds within 0.83 dB from 25 to 60 Hz. At 900 watts, 1.2 times the rating, the cone uses 8.3 of its 13.0 millimetres and the port mouth runs 12.2 metres per second, under the 17 where a slot starts to chuff. Tuning is chosen for in-car response rather than an anechoic curve: a vehicle adds roughly 12 dB per octave below about 45 Hz, and this tuning is where that sum comes out flattest across 25 to 60 Hz.

The Professional line is the full-size, front-firing option rather than a trunk wedge. This chassis is a full-size front-firing box on a 2.25 inch baffle built from three 3/4 inch layers with the woofer flush-mounted in the outer layer, a Memphis Audio logo acrylic, and a port and excursion budget checked at 900 W. It carries a 2 year warranty, against 1 year on the Performance Optimized lines.

Memphis Audio does not publish the mounting hole locations for the MOJO Pro 15, so we cannot install the threaded inserts before it ships. The threaded insert kit comes in the box instead: inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, an allen key and woofer gasket tape. You set the inserts when you mount the woofer, and this box ships with one kit.

Yes, at 26 Hz, 24 dB per octave. Below tuning a vented box stops loading the cone and excursion runs away toward DC. With the filter in place this cabinet puts the Memphis Audio MOJO Pro 15 at 64 percent of its usable travel at 900 W.

The two alignments converge at the bottom of the band on this driver rather than crossing cleanly, so there is no meaningful subsonic advantage either way. Above 25 Hz the vent is the louder of the two for the same power. The Performance Graphs tab plots this cabinet, 2.52 cubic feet vented at 32.5 Hz, against the 1.21 cu ft sealed wedge we build for this driver (PO 15-S W Mojo Pro), so you can judge it yourself.

It is a vertical slot beside the woofer, the full height of the cavity, 1.75 inches wide and 28.9 square inches. It runs 7.50 inches to the back wall and turns once along it for 8.30 inches; the fold costs about 1.5 Hz and the port is cut for it. The channel runs at 20.3 metres per second at 900 W, 52 percent of its turbulence limit, and the mouth edges carry a 1/2 inch roundover so the air leaves the face at 12.2 metres per second against the 17 metres per second threshold where a slot starts to chuff.

62 lb, 36.00" W x 18.00" H x 13.00" D external. It ships as a UPS parcel; the price includes shipping in the 48 states. Every Professional cabinet is priced the same way, by its size: this one is 4.88 cubic feet outside. Do not add polyfill; it ships dry on purpose.

No. This is an enclosure only, cut for the Memphis Audio MOJO Pro 15 specifically: the 13.840 inch cutout, the 7.880 inch mounting depth allowance and the 2.52 cubic foot alignment all come from Memphis Audio's published parameters. It fits both coil versions; the alignment published here is the D4. Bring your own driver.