Diamond D910D2
10″ subwoofer · dual 2 Ω · 600 W RMS
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 3 of 4 — missing: magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 600 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| Bass character (Qtc) | Flat and accurate · 0.70 |
|---|---|
| Fc | 47 Hz |
| F3 (−3 dB, no cabin gain) | 50 Hz |
| Example box (outside) | 12 5/8″ × 12 5/8″ × 10 1/8″ |
Ported
deeper, louder| Tuning (Fb) | 37 Hz |
|---|---|
| Port | slot 1 3/16 × 14 5/16″, 37 5/16″ long |
| Port velocity at 600 W | 70 ft/s |
| F3 (−3 dB, no cabin gain) | 33 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 7 1/8″ |
The volume and tuning are the recommendation, but the port doesn’t fit this example box. Size the box and port in the designer.
Open ported box in designerDeeper: 1.13 ft³ (32 L) tuned to 33 Hz, 20 1/4″ × 15 3/4″ × 10 1/16″ outside — a bigger box with flatter deep bass. Open in the calculator
Projects with this subwoofer
Boxes that users designed and published: plans, cut sheet and response graph.
Thiele/Small parameters
| Size | 10″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 600 W |
| Fs | 34 Hz |
| Qts | 0.51 |
| Qes | 0.6 |
| Qms | 3.2 |
| Vas | 0.53 ft³ |
| Re (one coil) | 1.93 Ω |
|---|---|
| Sd | 51.2 in² |
| Xmax | 0.87″ |
| Vd | 44.3 in³ calc. |
| Mms | 225 g calc. |
| BL | 12.4 T·m calc. |
| EBP | 57 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 81.9 dB calc. |
Mounting dimensions
| Cutout diameter | 9 7/16″ |
|---|---|
| Mounting depth | 7 1/2″ |
| Overall diameter | 10 11/16″ |
“≈” 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/20060311053338/http://www.diamondaudio.com/products/pdfs/D9%
- web.archive.org/web/20070320154300/http://www.diamondaudio.com:80/PDF/current/D9
Other Diamond 10″ models
- Diamond CM310D2 10″ · dual 2 Ω
- Diamond CM310D4 10″ · dual 4 Ω
- Diamond D102 10″ · dual 2 Ω
- Diamond D104 10″ · dual 4 Ω
- Diamond D310D2 10″ · dual 2 Ω
- Diamond D310D4 10″ · dual 4 Ω
- Diamond D610D2 10″ · dual 2 Ω
- Diamond D610D4 10″ · dual 4 Ω
- Diamond D910D4 10″ · dual 4 Ω
- Diamond DE102 10″ · dual 2 Ω
- Diamond DE104 10″ · dual 4 Ω
- Diamond H102 10″ · dual 2 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Rockford Fosgate Power T1D210 0.49 ft³ sealed · 1.34 ft³ ported
- B2 Audio IS10 D2 v3 0.49 ft³ sealed · 0.85 ft³ ported
- Rockville W10K6D2 V2 0.46 ft³ sealed · 1.34 ft³ ported
- DD Audio 610d D2 0.49 ft³ sealed · 0.85 ft³ ported
- Phoenix Gold Ti310D4 (Ti3, DVC 4 ohm) 0.46 ft³ sealed · 0.81 ft³ ported
- Sky High Car Audio FEX-10 D2 0.49 ft³ sealed · 0.81 ft³ ported
FAQ
What box does the Diamond D910D2 need?
Recommended net volume: 0.57 ft³ sealed, 0.81 ft³ ported tuned to 37 Hz — for one sub in a sedan at 600 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Diamond D910D2 Thiele/Small specs?
Fs 34 Hz, Qts 0.51, Vas 0.53 ft³, Xmax 0.87″, Sd 51.2 in².
What is the Diamond D910D2 mounting depth?
Mounting depth is 7 1/2″, cutout diameter 9 7/16″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Diamond D910D2 handle and how do I wire it?
RMS power rating: 600 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.