SPL Dynamics PRO-10D2 MK4

10″ subwoofer · dual 2 Ω · 500 W RMS

46 HzFs, resonance

0.55Qts

0.49 ft³Vas

0.67″Xmax

500 WRMS

Source	web.archive.org · manufacturer data
Checked against source	October 2026
Thiele/Small parameters	not in the spec sheet: Sd — typical value for the size used
Mounting dimensions	2 of 4 — missing: frame outer diameter, magnet diameter; the designer will use an estimate

Recommended box

For a sedan, one sub, 500 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.

Sealed

smaller, tighter

0.49 ft³ (14 L)

Net volume

Bass character (Qtc)	Flat and accurate · 0.77
Fc	65 Hz
F3 (−3 dB, no cabin gain)	63 Hz
Example box (outside)	12 3/16″ × 12 3/16″ × 9 11/16″

Open sealed box in designer

Ported

deeper, louder

0.85 ft³ (24 L)

Net volume

Tuning (Fb)	38 Hz
Port	slot 1 3/16 × 14 5/16″, 33 9/16″ long
Port velocity at 500 W	69 ft/s
F3 (−3 dB, no cabin gain)	36 Hz
Example box (outside)	15 13/16″ × 15 3/4″ × 13 3/16″

Open ported box in designer

Deeper: 1.31 ft³ (37 L) tuned to 36 Hz, 31 1/2″ × 15 3/4″ × 9 3/4″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size	10″
Voice coils	dual 2 Ω
RMS power	500 W
Fs	46 Hz
Qts	0.55
Qes	0.59
Qms	7.69

Vas	0.49 ft³
Re (one coil)	1.6 Ω
Sd	≈ 52.7 in²
Xmax	0.67″
EBP	78 — sealed or ported calc.
Sensitivity, 1 W / 1 m	85.6 dB calc.

Mounting dimensions

Cutout diameter	9″
Mounting depth	6″

“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.

Data sources

web.archive.org/web/20070718034538/http://www.spldynamics.fi:80/oldmodels/oldsub

Other SPL Dynamics 10″ models

SPL Dynamics PRO-10D2 MK3 10″ · dual 2 Ω
SPL Dynamics PRO-10D4 MK3 10″ · dual 4 Ω
SPL Dynamics PRO-10D4 MK4 10″ · dual 4 Ω
SPL Dynamics PRO-250D2 10″ · dual 2 Ω
SPL Dynamics SW-250D2 10″ · dual 2 Ω
SPL Dynamics V-10S 10″ · 4 Ω
SPL Dynamics V-10S4 10″ · 4 Ω
SPL Dynamics V-250D2 10″ · dual 2 Ω
SPL Dynamics V-250D4 10″ · dual 4 Ω
SPL Dynamics V-250S4 10″ · 4 Ω
SPL Dynamics XTR-250D2 10″ · dual 2 Ω
SPL Dynamics XTR-250D4 10″ · dual 4 Ω

Similar 10″ subwoofers from other brands

Close in Fs, Qts and Vas — a box of similar volume will suit them.

Ground Zero GZUW 10SQX (2x2 Ohm) 0.74 ft³ sealed · 0.85 ft³ ported
Diamond CM310D2 0.46 ft³ sealed · 0.81 ft³ ported
RE Audio SEX10 D2 v2 0.46 ft³ sealed · 0.81 ft³ ported
DD Audio 3510i D2 0.71 ft³ sealed · 0.85 ft³ ported
Kicker CompQ 10" 4-Ohm DVC (42CWQ104) 0.49 ft³ sealed · 0.85 ft³ ported
CT Sounds TROPO-XL-10 D4 0.53 ft³ sealed · 1.27 ft³ ported

FAQ

What box does the SPL Dynamics PRO-10D2 MK4 need?

Recommended net volume: 0.49 ft³ sealed, 0.85 ft³ ported tuned to 38 Hz — for one sub in a sedan at 500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the SPL Dynamics PRO-10D2 MK4 Thiele/Small specs?

Fs 46 Hz, Qts 0.55, Vas 0.49 ft³, Xmax 0.67″.

What is the SPL Dynamics PRO-10D2 MK4 mounting depth?

Mounting depth is 6″, cutout diameter 9″. The inside depth of the box must exceed the mounting depth by at least 1″.

How much power does the SPL Dynamics PRO-10D2 MK4 handle and how do I wire it?

RMS power rating: 500 W. Dual 2 Ω voice coils: series gives 4 Ω, parallel gives 1 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.