Proline X PO 10-S W T1 sealed wedge, front baffle with gloss black insert and pre-wired leads, 20.75 by 13.5 inches.Proline X PO 10-S W T1 sealed wedge, side profile with recessed terminal cup, 13 inch base, 13.5 inches tall.

Performance Optimized · Datasheet

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

Net volume
0.746 Cubic Feet (RF Spec: 0.75 EXACT)
Cutout
9.0625 Inches
External dimensions
20.75 Inches W × 13.5 Inches H × 8.125 Inches / 13 Inches D
Front baffle
Vertical Trunk-Lid-Side Woofer Mounting Face
Buy at Audio Intensity
  • Best For: Rockford Fosgate T1D210 Trunk-Fit SPL-Capable Builds (Compact Sedans, Coupes, Cargo Space Limited)
  • Net Volume: 0.746 cu ft (RF Spec: 0.75 EXACT | 0.95 cu ft Gross)
  • Driver Match: Rockford Fosgate T1D210 (DVC 2Ω) or T1D410 (DVC 4Ω)
  • Construction: Rear-Firing Wedge | V-Groove/Dado | FlexFit Baffle Ready

Technical specifications

Enclosure TypeSealed | Wedge Geometry | Rear-Firing Trunk-Load
Driver-Specific FitmentRockford Fosgate T1D210 (DVC 2Ω) or T1D410 (DVC 4Ω)
Internal Volume (Gross)0.95 Cubic Feet
Internal Volume (Net After Displacement)0.746 Cubic Feet (RF Spec: 0.75 EXACT)
Baffle ConfigurationVertical Trunk-Lid-Side Woofer Mounting Face
MaterialLangboard Elite 3/4" MDF
Front Baffle ConstructionDouble-Layer 1.5" MDF (Two 3/4" Sheets Bonded)
JoineryV-Groove and Dado (CNC-Cut)
ConstructionShopSabre CNC / Angled Seat-Side Compound Cuts
External Width20.75 Inches
External Height13.5 Inches
External Depth (Top)8.125 Inches
External Depth (Bottom)13 Inches
Baffle Angle~20° From Vertical (Seat-Side Face)
Mounting Hole Diameter9.0625 Inches
Mounting Hardware8/32 Threaded Inserts | Stainless Steel Machine Screws Included (FlexFit Compatible)
Terminal CupProline X ABS/Carbon Fiber Composite | 12g OFC Pre-Wired
DampingPolyfill Pre-Installed
Recommended Power400-600 Watts RMS (RF CEA-2031 Rated: 600W RMS Continuous)
Carpet FinishDark Gray Trunkliner (Standard) or Plush Black
Acrylic InsertBlack, Blue, Red, White, or None
Bundle OptionsEnclosure Only (Bring Your Own T1D210 or T1D410)
Warranty1-Year Limited (Enclosure)
ManufacturedTullahoma, Tennessee, USA

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

The T1D210 is the 10" version of Rockford's flagship Power Series subwoofer platform. Same core engineering as the T1D212, VAST surround technology, FlexFit basket, SWIFT terminals, Kevlar-reinforced paper cone, anodized aluminum voice coil former, inductive damping heat sink, Klippel-verified motor characterization. Scaled down to a 10" cone form factor with a proportionally smaller motor structure. 600 watts RMS CEA-2031 rated instead of the 12"'s 800W, 16mm one-way Xmax (same as the 12"), and a substantially smaller cabinet footprint.

The math on this box lands where it should. 0.95 cu ft gross minus the T1D210's 0.204 cu ft total driver displacement = 0.746 cu ft net. RF's published sealed spec is 0.75 cu ft net. Direct hit. Same principle as the 12" T1 build, we're building to RF's actual displacement number (0.204), not the smaller cone-body-only figure (0.078) that appears on Rockford's public spec sheet. Boxes designed to the published 0.078 number end up around 16% oversize.

Wedge geometry is the standard PO trunk-load pattern, sized appropriately for a 10". 20.75" wide, 13.5" tall, 8.125" deep at top, 13" deep at bottom. This is a standard-depth wedge (not shallow like the JL TW3/TW5 series) because the T1D210's 6.375" mounting depth needs real cabinet depth to fit. The 8.125" top face provides enough clearance for the driver's basket flange behind the vertical baffle, and the 13" bottom face gives the motor structure ample room.

Cabinet size relative to the 12" T1 wedge: about 60% of the gross volume, in a footprint that's ~4" narrower and 1.5" shorter. If you're in a compact sedan trunk, a coupe with a shallow parcel shelf, or a hatchback/wagon cargo area where the 12" cabinet would be too big or too tall, the 10" fits where the 12" won't.

Cabinet weight loaded: roughly 45-50 pounds total (25.7 lb driver plus the enclosure). Manageable for one-person install but two-person is still smart if you're threading it around interior trim during the install.

Power target: RF specs 600 watts RMS. Sweet spot is 400-600 watts. If you're building for max SPL, feed it the full 600W from a 1-ohm-stable class D monoblock (SWIFT parallel wiring). If you're building for musical daily-driver use, 400-500W at 1-2 ohms will deliver plenty of impact without pushing the driver's thermal envelope. RF's own T500-1bdCP monoblock is the natural amp match. 1-ohm stable Constant Power design that hits its full rated output regardless of impedance load.

The T1D210 is somewhat surprising musically for a driver in this category. VAST surround technology gives it more effective cone area than a conventional 10" driver, so it moves more air per stroke and reaches lower cleanly. Combined with the Klippel-verified motor and progressive-roll spider design, it has low distortion at typical listening levels, not just at SPL competition volumes. This makes the T1D210 more of a "does both" driver than the SPL-only reputation of the T1 line might suggest.

Sealed vs ported: RF supports both. Ported gets you 1.5 cu ft net at ~32-35 Hz tuning, adds 3-4 dB in the 40-50 Hz range, but doubles cabinet volume and loses transient accuracy. If you want SPL, ported is the answer. If you want musical accuracy or if cabin real estate is limited, sealed is the answer. This box is the sealed answer.

Same JL-style crossover approach applies: subsonic filter around 25-30 Hz to protect against below-Fs excursion, low-pass around 80-100 Hz depending on front-stage capability.

This is an enclosure-only listing. Bring your own T1D210 (or T1D410, the 4-ohm variant fits identically, RF publishes the same 0.75 cu ft sealed spec across both). Source the driver from any authorized Rockford Fosgate dealer.

If you want the flagship RF Power Series 10" in RF's exact sealed spec, in trunk-fit wedge form, this is the box.

Questions

What size enclosure does the Rockford Fosgate T1D210 need?

Rockford Fosgate publishes 0.75 cubic feet net internal as the recommended sealed enclosure volume for the T1D210 (and vented at 1.5 cubic feet if you prefer ported). The Audio Intensity Performance Optimized Wedge Sealed 10 for Rockford Fosgate T1 delivers 0.95 cubic feet gross internal, which after subtracting the T1D210's 0.204 cubic foot total driver displacement lands at 0.746 cubic feet net. Essentially exact match to RF's published sealed spec.

What are the dimensions of the Performance Optimized Wedge Sealed 10 for the Rockford Fosgate T1?

The Performance Optimized Wedge Sealed 10 for Rockford Fosgate T1 measures 20.75" wide x 13.5" tall externally, with a wedge-shaped depth of 8.125" at the top and 13" at the bottom. The angled seat-side face sits approximately 20 degrees back from vertical, designed to match the lean of typical sedan and coupe rear seat backrests. Substantially more compact than the 12" T1 wedge, fitting installs where the larger cabinet won't clear.

How does the T1D210 compare to the larger T1D212?

Both drivers share the same Rockford Fosgate Power Series T1 engineering: VAST surround technology, FlexFit basket, SWIFT terminals, Klippel-verified motor, and Kevlar-reinforced paper cone. Key differences: the T1D210 (10") is rated for 600 watts RMS versus the T1D212's 800 watts RMS. The T1D210 uses a smaller motor and lighter magnet (100 oz vs 123 oz on the 12"). Cabinet requirements are proportionally smaller: 0.75 cu ft sealed for the 10" versus 1.25 cu ft for the 12". Choose the T1D210 when trunk or cargo space is limited, or when the 12"'s output isn't required for your application.

How much power can the Rockford Fosgate T1D210 handle?

The Rockford Fosgate T1D210 handles 600 watts RMS continuous (CEA-2031 compliant) with 1200 watts peak. For balanced daily-driver output and long-term reliability in the Performance Optimized Wedge Sealed 10 enclosure, pair the T1D210 with a clean, well-regulated class D monoblock delivering 400-600 watts RMS at your chosen impedance. Rockford Fosgate's own Power T500-1bdCP amplifier is a natural match, featuring 1-ohm stable Constant Power design that hits full rated output regardless of impedance load.

What impedance options are available for the Rockford Fosgate T1 10"

Rockford Fosgate offers the T1 10" in two dual-voice-coil impedance configurations: T1D210 (Dual 2-ohm) and T1D410 (Dual 4-ohm). Both fit this cabinet identically since RF publishes the same 0.75 cu ft sealed spec across both variants. The T1D210 (2-ohm) uses SWIFT terminals to configure as 1-ohm parallel (maximum output) or 4-ohm series. The T1D410 (4-ohm) configures as 2-ohm parallel or 8-ohm series. Choose based on your amplifier's impedance capability, most modern class D monoblocks favor 1-ohm loads, making the T1D210 the higher-output single-driver choice.

What is the mounting depth of the Rockford Fosgate T1D210?

The Rockford Fosgate T1D210 has a mounting depth of 6.375 inches with a cutout diameter of 9.0625 inches. The T1D210 uses Rockford's FlexFit basket, a slot-mounted frame pattern that allows fine-tuning of the driver's rotational mounting position. The Performance Optimized Wedge Sealed 10 cabinet provides ample internal clearance: over 9.5 inches at the driver's mounting center, and 7.375 inches at the top baffle edge (both after 3/4" MDF panel thickness).

Should I use the T1D210 in a sealed or ported enclosure?

Rockford Fosgate supports both alignments for the T1D210. Sealed (0.75 cu ft net per RF spec) delivers tight, controlled bass with excellent transient response. Ideal for musical accuracy and sound quality installs. Ported (1.5 cu ft net per RF spec, typically tuned around 32-35 Hz) delivers 3-4 dB more output in the 40-50 Hz range and is preferred for maximum-SPL builds, but doubles cabinet volume. This cabinet is engineered for the sealed alignment. If you need a ported T1 enclosure, that's a separate build. Contact us for options.

Where is the Performance Optimized Wedge Sealed 10 for Rockford Fosgate T1 manufactured?

The Performance Optimized Wedge Sealed 10 for Rockford Fosgate T1 is manufactured in Tullahoma, Tennessee, USA at the Audio Intensity facility. Every panel is CNC-cut on ShopSabre routers from premium Langboard Elite MDF, with the angled wedge geometry requiring precise compound cuts to maintain both the RF-spec 0.75 cu ft net target volume and the correct 20-degree seat-side mating angle. Assembly begins after your order is placed. Expect a 2 to 5 business day build window before shipment.

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