Hertz
Hertz HMS 10 B2-LD-CLong Throw 10” Marine Subwoofers
The HMS 10 B2-LD-C long throw 10” marine subwoofers are engineered for infinite baffle application. The 2 Ohm configuration makes the most of the amplifier power.
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
- 2
- Depth mm (in.)
- 116 (4.56)
- Voice Coil Type
- single
- No Filter Component
- 2Ω 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
- 2
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
The HMS 10 B2-LD-C long throw 10” marine subwoofers are engineered for infinite baffle application. The 2 Ohm configuration makes the most of the amplifier power. It relieves the main speakers from the hard work of reproducing the lowest frequency range, adding bass output and punch to maximize the overall system performance. The FEM optimized high-excursion mobile equipment of HMS 10 B with a 50 mm (2”) voice coil is driven by a massive magnetic group, to obtain a perfect control also at very high level SPL. Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust ) HMS 10 B2-LD-C is nature-proof. The progressive design aramid fiber spider with silicone-insulated lead wires ensures durability and constant performance over time. The gold-plated corrosion resistant brass connection terminals with silicone cap protect the leadwire junction point.
Highlights
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.
- 2 Ohm load to make the most of amplifier power.
- 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
13
| Size mm (in.) | 250 (10) |
| Power Handling - Continuous W | 300 |
| Power Handling - Peak W | 600 |
| Impedance Ohm | 2 |
| Depth mm (in.) | 116 (4.56) |
| Voice Coil Type | single |
| No Filter Component | 2Ω 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 | Ferrite |
| Cone | Polypropylene with UV inhibitors |
| Xmech mm (in.) | ±16,3 (0.64) |
Electro-acoustic Specs
13
| D mm | 210 |
| Xmax mm | 12,3 |
| Re Ohm | 2,1 |
| Fs Hz | 43 |
| Le mH | 0.46 |
| Vas I | 30,46 |
| Mms g | 75.6 |
| Cms mm/N | 0.18 |
| BL T*m | 8.3 |
| Qts | 0,6 |
| Qes | 0,63 |
| Qms | 12,3 |
| Spl dB | 88,5 |
Physical Specs
5

| A | 280 mm | 11 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
| 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
| 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
| 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
| 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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