Proline X PO 10D-S W T1 sealed wedge enclosure, product photos pending. Placeholder graphic reading Photos Coming Soon.

Performance Optimized · Datasheet

Performance Optimized Wedge Sealed Dual 10" Enclosure | Rockford Fosgate T1D210 Dual 10" Sealed enclosure

Net volume
1.500 cu ft total, 0.750 per driver
Max mounting depth
6.375 in required
Cutout
9.0625 in
External dimensions
31.34 in W × 15 in at the seat face H × 13.28 in at the base D
Front baffle
1.5 in, double baffle
Buy at Audio Intensity
  • Best For: Dual Rockford Fosgate T1D210 Trunk-Fit Builds
  • Net Volume: 0.750 cu ft per driver (0.85 cu ft Gross)
  • Alignment: Qtc 0.709, fc 45.3 Hz, F3 45.2 Hz
  • Driver Match: Rockford Fosgate T1D210, dual 2 ohm
  • Impedance: dual 2 ohm pair, 2 or 0.5 ohms
  • Construction: Dual Chamber | Rear-Firing Wedge | V-Groove/Dado | Double 1.5" Baffle | Threaded Inserts

Technical specifications

SpecificationValue
SeriesProline X Performance Optimized Wedge
Compatible DriverRockford Fosgate T1D210, quantity 2. Direct fit
ConfigurationDual 10 inch, dual chamber sealed wedge
Mounting PositionTrunk or cargo area, tall face against the rear seat back
Firing DirectionRearward into the trunk. Not a down fire design, no feet included
External Width31.34 in
External Height15 in at the seat face
External Depth13.28 in at the base, tapering to 7.82 in at the top
Internal Volume, Gross1.70 cu ft total, 0.85 per chamber
Internal Volume, Net Acoustic1.500 cu ft total, 0.750 per driver
AlignmentQtc 0.709, fc 45.3 Hz, F3 45.2 Hz anechoic
Driver Cutout9.0625 in
Driver Mounting Depth6.375 in required
Power Handling1200 watts RMS total across the pair
ImpedanceDual 2 ohm per driver
MaterialLangboard Elite MDF
ConstructionCNC cut, V-groove and dado joinery
Panel Thickness0.75 in
Front Baffle1.5 in, double baffle
Internal BracingFull chamber divider
Driver MountingThreaded inserts at every mounting location, stainless machine screws included
Terminal CupsOne Proline X ABS and carbon fiber composite, side mounted, pre wired 12 gauge OFC
DampingLight polyfill wall lining, does not alter acoustic volume
CarpetPlush black
Weight44.4 lb
Warranty1 Year Limited
Built InTullahoma, Tennessee

Performance in this enclosure

Net airspace
0.75
cu ft per chamber
System Qtc
0.71
sealed
Half power
45.2
Hz · F3
Xmax at
557
W RMS · no filter
With 25 Hz subsonic
760
W RMS · +36%
Amplifier
600
W RMS recommended
This enclosure holds 0.75 cu ft net per chamber. In it the Rockford Fosgate T1D210 runs a system Qtc of 0.71 with half power at 45.2 Hz, and the cone reaches its 16.0 mm travel limit at 557 W, below the driver’s 600 W thermal rating, so travel is what stops you here, not heat. Run a subsonic filter at 25 Hz and that becomes 760 W — +203 W, or 36 percent more power for the same 16.0 mm of travel.

01Is it a sealed driver?

Efficiency bandwidth product places the motor before anything else is decided.

EBP = Fs ÷ Qes = 58.5
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 D2 58.5
D2 · EBP 58.5
At 58.5 the T1D210 sits in the transition band, not the sealed band. That is not a mismatch: a transition motor works in either alignment, and sealed buys a smaller box and a gentler roll-off at the cost of some low-end output. Stage 02 shows what this airspace actually does with it.

02What the box does to it

0.75 cu ft against a 15.4 L Vas.

α = Vas ÷ Vb = 0.73  ·  Fc = Fs√(α+1) = 45 Hz  ·  Qtc = 0.71
20 30 50 70 100 150 200 +6 +0 -6 -12 -18 -24 FREQUENCY · Hz LEVEL · dB −3 dB
D2 · Qtc 0.71, Fc 45 Hz, F3 45.2 Hz
The box lifts resonance from 34.5 Hz free-air to 45 Hz and half power lands at 45.2 Hz, anechoic, before any cabin gain.

03The watts that reach Xmax (in this enclosure)

Travel scales with the square root of power, so there is one wattage that puts the cone exactly on 16.0 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.

PXmax = 557 W unfiltered  →  760 W with a 25 Hz subsonic
20 30 50 70 100 150 200 0 4 8 12 16 20 FREQUENCY · Hz CONE TRAVEL · mm PAST LINEAR TRAVEL · Xmax 16.0 mm 557 W reaches Xmax here
D2 · 557 W, no filterD2 · 760 W with subsonic at 25 Hz, 24 dB/octXmax 16.0 mm one-way
Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 16.0 mm. Unfiltered that is 557 W, reached first at 20 Hz. It sits under the 600 W the driver can take thermally, so the enclosure sets the ceiling, not the voice coil. The dashed traces are the same driver behind a subsonic filter at 25 Hz, 24 dB/oct: stopping the cone wasting travel below the passband lets it take 760 W before hitting the same 16.0 mm. That is 36 percent more amplifier for the price of one filter setting.
ParamValueUnitNote
Fs34.50Hzfree-air resonance
Qts0.540D2
Vas15.40Lequivalent compliance
Sd345.0cm²effective piston area
Xmax16mmone-way linear travel
Pe600Wcontinuous RMS
SPL82.2dB1 W / 1 m, derived from T/S

Driver parameters as published by rockfordfosgate.com. Curves computed against this enclosure’s actual net airspace.

Installer's take

0. at Qtc 0.709 and F3 45.2 Hz anechoic, per chamber, computed from published Thiele-Small.

On impedance: Each driver is a dual 2 ohm. Wired in series a driver is 4 ohms, and the pair in parallel gives 2 ohms. All four coils in parallel is 0.5 ohms, which almost nothing is stable into, so 2 ohms is the sensible target.

Measure the base depth. This cabinet is 13.28 inches deep at the trunk floor, 7.82 at the top, and 31.34 wide.

Questions

Will this enclosure fit two T1D210?

Yes. Both positions are CNC cut to 9.0625 in for the T1D210's cutout and the cabinet clears its 6.375 in mounting depth. Threaded inserts are pressed in at every mounting location.

Why 0.750 cubic feet net per driver?

0.750 cubic feet net per driver, the same airspace the single version of this cabinet holds. The alignment is identical: Qtc 0.709 either way. Each chamber is 0.85 cu ft gross before the driver's displacement.

What amplifier power should I run, and what impedance?

The Rockford Fosgate T1D210 is rated 600 watts RMS each, so 1200 across the pair. Each driver is a dual 2 ohm. Wired in series a driver is 4 ohms, and the pair in parallel gives 2 ohms. All four coils in parallel is 0.5 ohms, which almost nothing is stable into, so 2 ohms is the sensible target. Aim for roughly 840 to 1200 watts at the final wired impedance.

How does a wedge enclosure improve the sound in a trunk installation?

The angled seat-side face matches the roughly 20 degree lean of a factory rear seat, so the cabinet sits flat against it instead of leaving a wasted triangle. The vertical trunk-lid-side face carries both drivers, firing rearward into the trunk cavity.

Why two separate chambers instead of one shared one?

A shared chamber lets each cone modulate the other's air load, which makes the pair less predictable under hard excursion. A full divider gives each driver its own sealed volume, so both behave exactly as the single version does.

What is the expected low-frequency extension?

Half power lands at 45.2 Hz anechoic, before any cabin gain. Qtc is 0.709. These figures exclude cabin gain, which in most vehicles adds real output below 40 Hz.

Do I need to add polyfill or damping?

No. Polyfill is already installed as a light wall lining and the quantity is chosen so it does not change the acoustic volume. Do not add more.

Are the drivers included?

No. This is an enclosure only. You receive the cabinet finished in plush black carpet, with threaded inserts at both driver positions, stainless machine screws, one side-mounted pre-wired terminal cup and the polyfill lining already installed.

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