Performance Optimized Down Fire Wide Sealed 10" Shallow Sub Enclosure Rockford Fosgate T1 Slim · Single 10" Sealed enclosure

Because it is only 12 inches deep. The standard Performance Optimized Down Fire platform is 30 wide by 15 deep, and under a rear seat or on a narrow cargo floor there is often not 15 inches to give.

The airspace lost from the depth is recovered from the length, so the cabinet runs 41 inches instead of 30 and stands 6.6875 inches tall, with the same driver specific chamber. If you do have 15 inches of depth, the standard 30 by 15 cabinet is the better pick.

The standard cabinet is 30 by 15 by 7 inches and gives the driver 0.99 cubic feet net. This one is 41 by 12 by 6.6875 inches and gives the driver 1.003 cubic feet net. The height was solved to hold the same airspace as the standard box, so the two sit on essentially the same air.

The choice is about shape: the standard box if you have 15 inches of depth, this one when depth is the limit and you have 41 inches of run.

No. The high Qtc comes from the driver, not the box. Free-air Qts is 0.95 on the T1S1-10 and 1.04 on the T1S2-10, and system Qtc can only approach Qts as the box grows, never drop below it. Because Qts is already above 0.707, no sealed volume of any size gives this driver a textbook flat alignment. A smaller box would make it worse, which is why this cabinet carries 1.003 cubic feet net.

A peak just above the corner frequency, roughly 2 dB on the 1 ohm model and 3 dB on the 2 ohm, followed by a steeper rolloff below it. In practice that reads as punch and impact rather than flat, deep extension. The peak is also why F3 lands low here, 37.9 Hz on the T1S1-10 against an Fc of 50.8 Hz. In a vehicle, firing into the floor, it lands where cabin gain is already rising.

Both are single voice coil and both fit this cabinet identically. In 1.003 cubic feet net the T1S1-10 lands at Qtc 1.148 with Fc at 50.8 Hz and F3 at 37.9 Hz; the T1S2-10 lands at Qtc 1.257 with Fc at 52.6 Hz and F3 at 38.2 Hz. The 1 ohm model is the better damped of the two. Choose by the load your amplifier is stable into first, then take the damping difference as a secondary consideration.

Straightforward, because both T1 Slim models are single voice coil, so there is no series or parallel decision at the driver. The one side mounted Proline X terminal cup is pre-wired in 12 gauge OFC, and the impedance your amplifier sees is the model you install: 1 ohm for the T1S1-10, 2 ohm for the T1S2-10. Rockford rates both at 500 watts RMS; target 350 to 500 watts RMS and confirm your amplifier is stable at that load.

V-groove and dado joinery, CNC cut on ShopSabre routers from Langboard Elite MDF, so every panel joint locks mechanically before adhesive is applied. The front baffle is a 1.5 inch double layer with the outer layer machined as a flush recess, and the driver lands on 8/32 threaded inserts with stainless machine screws. A windowed U-brace ties the long 41 inch panels together, polyfill is installed as a light wall lining, and corners are square, the Down Fire series standard. The terminal cup is side mounted so it stays accessible with the baffle facing the floor. Assembled and inspected in Tullahoma, Tennessee.

No. This listing is for the enclosure only. Bring your own Rockford Fosgate T1S1-10 or T1S2-10; the cutout and mounting depth are direct fit for either model. We also sell the current Gen-2 Rockford Fosgate T1S2-10S, which uses the same 9.13 inch cutout. The 1.75 inch feet ship uninstalled, for an installed height of 8.4375 inches.