Hertz Cento CS 200 S4 (SVC 4 ohm)
8″ subwoofer · 4 Ω · 150 W RMS
Fs 40 HzQts 0.52Vas 0.48 ft³Xmax 0.35″
Recommended box
For a sedan, one sub, 150 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
| Net volume | 0.35 ft³ (10 L) |
|---|---|
| Qtc | 0.80 |
| Fc | 62 Hz |
| F3 (−3 dB, no cabin gain) | 58 Hz |
| Example box (outside) | 10 1/4″ × 10 1/4″ × 10 1/16″ |
Ported
| Net volume | 1.09 ft³ (31 L) |
|---|---|
| Tuning (Fb) | 33 Hz |
| Port | round port Ø2 1/2″, 9 5/16″ long |
| Port velocity at 150 W | 143 ft/s |
| F3 (−3 dB, no cabin gain) | 30 Hz |
| Example box (outside) | 28 15/16″ × 15 3/4″ × 6 1/2″ |
Thiele/Small parameters
| Fs | 40 Hz |
|---|---|
| Qts | 0.52 |
| Qes | 0.58 |
| Qms | 5 |
| Vas | 0.48 ft³ |
| Re | 3.3 Ω |
| Sd | 33.6 in² |
| Xmax | 0.35″ |
| Vd | 11.9 in³ calc. |
| Mms | 77 g calc. |
| BL | 10.5 T·m calc. |
| EBP | 69 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83.8 dB calc. |
General
| Size | 8″ |
|---|---|
| Voice coils | 4 Ω |
| RMS power | 150 W |
Mounting dimensions
| Cutout diameter | 7 1/16″ |
|---|---|
| Mounting depth | 4″ |
| Overall diameter | 8 3/8″ |
| Magnet diameter | 4 3/4″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 33.6 in².
“≈” 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
- hertz-audio.com/product/cs-200-s4/
- static.hertz-audio.com/media/2022/02/HERTZ_Cento_Scheda-CS200_22A.pdf