Diamond TDX10D4
10″ subwoofer · dual 4 Ω
| 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, 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| Bass character (Qtc) | Flat and accurate · 0.75 |
|---|---|
| Fc | 51 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) | 38 Hz |
|---|---|
| Port | slot 1 3/16 × 14 5/16″, 35 3/16″ long |
| Port velocity at 300 W | 49 ft/s |
| F3 (−3 dB, no cabin gain) | 34 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 7″ |
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: 1.38 ft³ (39 L) tuned to 30 Hz, 20 3/16″ × 15 3/4″ × 14 3/4″ 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 4 Ω |
| RMS power | — |
| Fs | 35 Hz |
| Qts | 0.52 |
| Qes | 0.62 |
| Qms | 3.1 |
| Vas | 0.62 ft³ |
| Re (one coil) | 3.25 Ω |
|---|---|
| Sd | 51.5 in² |
| Xmax | 0.87″ |
| Vd | 44.6 in³ calc. |
| Mms | 184 g calc. |
| BL | 14.6 T·m calc. |
| EBP | 56 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 82.8 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
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 D910D2 10″ · dual 2 Ω
- Diamond D910D4 10″ · dual 4 Ω
- Diamond DE102 10″ · dual 2 Ω
- Diamond DE104 10″ · dual 4 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Cerwin-Vega Mobile ST104D (Stroker 10" DVC 4ohm) 0.55 ft³ sealed · 1.02 ft³ ported
- DD Audio 610d D2 0.49 ft³ sealed · 0.85 ft³ ported
- Polk Audio MM1040DVC 0.49 ft³ sealed · 0.88 ft³ ported
- AMP MASS 300 10D2 V.2 0.49 ft³ sealed · 0.85 ft³ ported
- B2 Audio IS10 D2 v3 0.49 ft³ sealed · 0.85 ft³ ported
- Cerwin-Vega Mobile ST102D (Stroker 10" DVC 2ohm) 0.55 ft³ sealed · 1.02 ft³ ported
FAQ
What box does the Diamond TDX10D4 need?
Recommended net volume: 0.57 ft³ sealed, 0.81 ft³ ported tuned to 38 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 TDX10D4 Thiele/Small specs?
Fs 35 Hz, Qts 0.52, Vas 0.62 ft³, Xmax 0.87″, Sd 51.5 in².
What is the Diamond TDX10D4 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″.