Hertz
Hertz HMS 10 B4-LD-CHMS 10 B Long Throw 10” Marine Subwoofer
The HMS 10 B long throw 10” marine subwoofer, also available in the black option HMS 10 B-C, is engineered for infinite baffle application.
Highlights
- Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust ).
- Long-throw 50mm (2”) voice coil woofer engineered for infinite baffle application featuring polypropylene cone injected with UV inhibitors and comolded Santoprene surround.
- Progressive-design aramid fiber spider with silicone-insulated lead wires ensuring durability and constant performance over time.
- FEM optimized high-excursion mobile equipment driven by a massive magnetic group encapsulated into a marine-grade polymer injected basket.
Key specs
Full specs- Size mm (in.)
- 250 (10)
- Power Handling - Continuous W
- 300
- Power Handling - Peak W
- 600
- Impedance Ohm
- 4
- Depth mm (in.)
- 116 (4.56)
- Voice Coil Type
- single
- No Filter Component
- SUBWOOFER
- Voice Coil Ø
- 50 (2)
Key specs
Full specs- Size mm (in.)
- 250 (10)
- Power Handling - Continuous W
- 300
- Power Handling - Peak W
- 600
- Impedance Ohm
- 4
Highlights
Overview- Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust ).
- Long-throw 50mm (2”) voice coil woofer engineered for infinite baffle application featuring polypropylene cone injected with UV inhibitors and comolded Santoprene surround.
- Progressive-design aramid fiber spider with silicone-insulated lead wires ensuring durability and constant performance over time.
Overview
Key features
- Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust ).
- Long-throw 50mm (2”) voice coil woofer engineered for infinite baffle application featuring polypropylene cone injected with UV inhibitors and comolded Santoprene surround.
- Progressive-design aramid fiber spider with silicone-insulated lead wires ensuring durability and constant performance over time.
- FEM optimized high-excursion mobile equipment driven by a massive magnetic group encapsulated into a marine-grade polymer injected basket.
- Gold-plated corrosion resistant brass connection terminals with silicone cap protecting leadwire junction point.
- IP 65 CERTIFICATION
- WATER JET TESTED
- UV RESISTANT
- SALT FOG TESTED
Technologies

IP 65 CERTIFICATION
‘

WATER JET TESTED
The protection grade IP65 for speakers define all the Hertz Marine products as totally protected against water

UV RESISTANT
According to the severe ASTM-D4329 standards for UV resistance, all the materials used for Hertz Marine products

SALT FOG TESTED
To satisfy the standards required by ASTM-B117, Hertz Marine products are tested with massive salt fog spray to
Specs
Technical Specs
| Size mm (in.) | 250 (10) |
| Power Handling - Continuous W | 300 |
| Power Handling - Peak W | 600 |
| Impedance Ohm | 4 |
| Depth mm (in.) | 116 (4.56) |
| Voice Coil Type | single |
| No Filter Component | SUBWOOFER |
| Voice Coil Ø | 50 (2) |
| Magnet size D x d x h mm (in.) | 140 x 60 x 30 (5.51 x 2.36 x 1.18) |
| Weight of one component kg (lb.) | 5,1 (11.24) |
| Magnet | High density flux ferrite |
| Cone | Polypropylene with UV inhibitors |
| Xmech mm (in.) | ±19 (0.75) |
Electro-acoustic Specs
| D mm | 210 |
| Xmax mm | 13.5 |
| Re Ohm | 4.5 |
| Fs Hz | 41 |
| Le mH | 0.9 |
| Vas I | 37 |
| Mms g | 69 |
| Cms mm/N | 0.22 |
| BL T*m | 10.2 |
| Qts | 0.71 |
| Qes | 0.76 |
| Qms | 11 |
| Spl dB | 88 |
Physical Specs

| A | 280 mm | 11.4 in. |
| B | 227 mm | 8.93 in. |
| C | 164 mm | 6.45 in. |
| D | 116 mm | 4.56 in. |
| F | 48 mm | 1.88 in. |
Frequency response

Visual spec reference.
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Enclosures / Box Advisor

SEALED BOX - COMPACT
- Vb l(cu.ft.)
- 50 (1.77)
- Fb Hz
- 54
- Qtc
- 1,05
- W mm(in.)
- 440 (17.32)
- H mm(in.)
- 440 (17.32)
- D mm(in.)
- 365 (14.37)
- Mounting Hole - M
- 230 (9.06)
- Wood Thickness
- 19 (0.75)
- A mm(in.)
- 440 X 440 (17.32 x 17.32) Qty 2
- B mm(in.)
- 440 x 327 (17.32 x 12.87) Qty 2
- C mm(in.)
- 402 x327 (15.83 x 12.87) Qty 2
| Box Tech Data - Sealed Box | |
|---|---|
| Vb l(cu.ft.) | 50 (1.77) |
| Fb Hz | 54 |
| Qtc | 1,05 |
| W mm(in.) | 440 (17.32) |
| H mm(in.) | 440 (17.32) |
| D mm(in.) | 365 (14.37) |
| Mounting Hole - M | 230 (9.06) |
| Wood Thickness | 19 (0.75) |
| Panels Cut List - Sealed Box | ||
|---|---|---|
| A mm(in.) | 440 X 440 (17.32 x 17.32) | Qty 2 |
| B mm(in.) | 440 x 327 (17.32 x 12.87) | Qty 2 |
| C mm(in.) | 402 x327 (15.83 x 12.87) | Qty 2 |

SEALED BOX - PERFORMANCE
- Vb l(cu.ft.)
- 71 (2.51)
- Fb Hz
- 51
- Qtc
- 0,99
- W mm(in.)
- 460 (18.11)
- H mm(in.)
- 460 (18.11)
- D mm(in.)
- 450 (17.72)
- Mounting Hole - M
- 230 (9,06)
- Wood Thickness
- 19 (0.75)
- A mm(in.)
- 460 x 460 (18.11 x 18.11) Qty 2
- B mm(in.)
- 460 x 412 (18.11 x 16.22) Qty 2
- C mm(in.)
- 422 x 412 (16.61 x 16.22) Qty 2
| Box Tech Data - Sealed Box | |
|---|---|
| Vb l(cu.ft.) | 71 (2.51) |
| Fb Hz | 51 |
| Qtc | 0,99 |
| W mm(in.) | 460 (18.11) |
| H mm(in.) | 460 (18.11) |
| D mm(in.) | 450 (17.72) |
| Mounting Hole - M | 230 (9,06) |
| Wood Thickness | 19 (0.75) |
| Panels Cut List - Sealed Box | ||
|---|---|---|
| A mm(in.) | 460 x 460 (18.11 x 18.11) | Qty 2 |
| B mm(in.) | 460 x 412 (18.11 x 16.22) | Qty 2 |
| C mm(in.) | 422 x 412 (16.61 x 16.22) | Qty 2 |
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