Proline X Performance Optimized Wedge Enclosure | Fits Dual Kicker Solo X 8" Subwoofers

Performance Optimized Wedge | Dual Kicker Solo X 8 Dual 8" Sealed Wedge Enclosure | Behind-Seat Wedge Design for Two Kicker Solo X L7X 8s 1.22 ft³ Gross0.51 ft³ Net / ChamberQtc 0.707 Butterworth25.25" × 11.75" × 10/14.25"V-Groove / DadoBuilt in Tennessee Two Kicker Solo X 8s in a Purpose-Built Sealed Wedge The Solo X L7X 8 packs Kicker's square-cone SoloX architecture and a high-mass ferrite motor into the 8-inch class, and a matched pair in properly solved sealed chambers delivers serious cone area with small-driver speed. This wedge was computed directly from Kicker's factory Thiele/Small parameters, not adapted from a generic dual 8" box. A 3/4" divider splits the box into two identical sealed chambers, 0.51 cu ft net each after driver displacement. That lands each dual 1-ohm Solo X 8 at a textbook Qtc of 0.707, the true Butterworth alignment, with dual 2-ohm drivers at 0.74 in the same chambers. Behind-Seat Wedge Design Explained This is a front-firing wedge built for behind-seat and rear-wall installs. The rear panel is vertical and sits flat against the cab wall; both woofers mount on the baffle, raked back 20 degrees to follow the seat lean. Vertical Rear Panel Sits flush against the cab back wall or trunk bulkhead, so the full footprint of the box goes to airspace instead of wasted gaps. 20° Raked Baffle Matches the lean of most factory seat backs and fires both Solo X drivers forward into the cabin instead of into the seat. Chambered and Braced The 3/4" dado-locked center divider isolates each driver in its own sealed chamber and doubles as a full-height brace, killing panel resonance in the largest spans. Carpet-Wrap Ledge A recessed perimeter ledge terminates the carpet cleanly at the baffle edge for a finished, factory look. Engineered for the Kicker Solo X 8 Each chamber is built to 0.51 cubic feet net, the airspace that puts the dual 1-ohm 49L7X81 exactly on the Butterworth alignment. Qtc 0.707 delivers the flattest response and tightest transient control a sealed enclosure can produce: no peaking, no overhang, bass that starts and stops with the recording. Dual 2-ohm 49L7X82 drivers run 0.74 in the same chambers, still squarely inside the accurate, musical zone. Because the chambers are identical, both drivers stay perfectly matched. Alignment Numbers (Per Driver) Dual 1-Ohm: Qtc 0.707 · Fc 54 Hz · F3 54 Hz — Dual 2-Ohm: Qtc 0.74 · Fc 54 Hz · F3 52.2 Hz Mounting Geometry Each baffle opening is CNC-cut to 7-5/16" (Kicker spec). Mounting depth required is 7-15/16", cleared with margin at every point of the stroke, including breathing room for the vented motor. 8/32 threaded inserts pressed into the baffle backside. Sealed Alignment Response Predicted anechoic response of each Solo X 8 in its own 0.51 cu ft sealed chamber, computed from Kicker factory T/S parameters. This enclosure ships without drivers, so both coil variants are plotted; they do not load the same chamber identically. −3 dB 20305070100150200 +60−6−12−18−24 FREQUENCY · Hz LEVEL · dB D1 · Qtc 0.707, Fc 54 Hz, F3 54 Hz D2 · Qtc 0.74, Fc 54 Hz, F3 52.2 Hz The dashed line marks the half-power point. Roll-off below F3 is the gentle 12 dB/octave slope characteristic of sealed alignments, which cabin gain in a real vehicle substantially fills in. Run the numbers yourself with our sealed box calculator. Performance Series Construction, Driver-Specific Tuning Langboard Elite MDF Premium 3/4" MDF panels milled to documented spec. V-Groove and Dado Joinery CNC-cut V-grooves at every panel intersection. Dado joints lock the raked baffle, vertical rear panel, and center divider into the side walls. Double-Layer 1.5" Front Baffle Two bonded 3/4" MDF sheets plus a trim layer at the driver mounting face. Two Solo X 8s put serious mechanical load into the baffle; it does not flex. Pre-Wired Terminal Cup Proline X ABS/carbon-fiber composite terminal cup, side-mounted, with 12 gauge OFC pre-wired. Finish and Trim Plush Black Carpet Every enclosure ships wrapped in plush black automotive carpet, the standard finish for the PO Wedge line. Black Acrylic Insert The signature Proline X acrylic insert comes in black. Box-Only This listing is box-only. Bring your own pair of Solo X 8s. Wiring Two Kicker Solo X 8s to Your Amplifier Kicker recommends 400-800 watts RMS per Solo X 8, so plan 800-1600 watts RMS of clean system power across the pair at your wired impedance. Match both drivers to the same coil configuration so the pair loads and wires symmetrically; sealed loading keeps cone travel controlled through the passband. Built in Tennessee, Backed by Audio Intensity Manufactured in Tullahoma, Tennessee on our ShopSabre CNC equipment. 1-year limited warranty. Call or text 931-563-5151. Dual Kicker Solo X 8s: True Butterworth, Twice Over Two identical 0.51 cubic foot sealed chambers, solved from factory T/S to land each Solo X 8 at Qtc 0.707. Double the cone area, the same flat, tight alignment, in a wedge that disappears behind the seat.