Diamond M6 10D2

10″ subwoofer · dual 2 Ω

32 HzFs, resonance
0.49Qts
0.52 ft³Vas
0.59″Xmax
Sourceweb.archive.org · manufacturer data
Checked against sourceOctober 2026
Thiele/Small parameterscomplete
Mounting dimensions0 of 4 — missing: cutout, mounting depth, frame outer diameter, magnet diameter; the designer will use an estimate

Recommended box

For a sedan, one sub, 300 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
0.46 ft³ (13 L)
Net volume
Bass character (Qtc)Flat and accurate · 0.71
Fc47 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 9 3/16″
Open sealed box in designer

Ported

deeper, louder
0.81 ft³ (23 L)
Net volume
Tuning (Fb)43 Hz
Port2 round ports Ø2 1/2″, 15 7/8″ long
Port velocity at 300 W101 ft/s
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)20 3/4″ × 15 3/4″ × 7 11/16″

At 300 W this example’s port will be noisy: air speed 101 ft/s, while the limit is 82 ft/s. It stays quiet up to about 190 W. Full power needs a port of at least 12.2 in², which means a bigger box than this example — size it in the designer.

Open ported box in designer

Deeper: 0.99 ft³ (28 L) tuned to 37 Hz, 24 7/16″ × 15 3/4″ × 7 11/16″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size10″
Voice coilsdual 2 Ω
RMS power—
Fs32 Hz
Qts0.49
Qes0.54
Qms5.29
Vas0.52 ft³
Re (one coil)1.65 Ω
Sd51.2 in²
Xmax0.59″
Vd30.2 in³ calc.
Mms261 g calc.
BL12.7 T·m calc.
EBP59 — sealed or ported calc.
Sensitivity, 1 W / 1 m81.5 dB calc.

Mounting dimensions

Ø≈ 10 5/16″cutout ≈ Ø9 1/8″mounting depth ≈ 5 1/8″magnet Ø≈ 5 15/16″
Cutout diameter≈ 9 1/8″
Mounting depth≈ 5 1/8″

“≈” 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

Other Diamond 10″ models

Similar 10″ subwoofers from other brands

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

FAQ

What box does the Diamond M6 10D2 need?

Recommended net volume: 0.46 ft³ sealed, 0.81 ft³ ported tuned to 43 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Diamond M6 10D2 Thiele/Small specs?

Fs 32 Hz, Qts 0.49, Vas 0.52 ft³, Xmax 0.59″, Sd 51.2 in².