The MPS 300 S4 shallow subwoofer has been designed to achieve exceptional performance even when there is very little space available to install the subwoofer box.
The MPS 300 is optimized to work in ultra-compact sealed boxes, starting from only 22.7 liters (0.8 cubic feet). A typical example is a subwoofer enclosure under the rear bench of pickup trucks, where the space - and the height - are limited.
The Mille PRO subwoofer has a depth/performance ratio never achieved before, thanks to the impressive cone excursion capacity, which is 20% higher than a traditional design.
This exceptional target has been achieved thanks to the ingenious suspension group design featuring a dedicated support structure for the spider and coil. This solution has allowed the movement of the magnetic group inwards, reducing the depth while maximizing cone linear excursion.
Key Features:
1. Ultra-shallow overall depth
2. 500W continuous power handling
3. Optimized for extremely-compact sealed enclosures of 20-24 liters (0.7-0.8 cubic feet)
4. Air Intercooling Revolution (A.I.R.) prevents air-compression-related limitations
5. Unrivalled mechanical excursion, +20% over traditional designs
6. Six-layer copper voice coil (38mm/1.5 in.) ensures high thermal capacity
7. Non-vented rear design allows reduced enclosure depth
8. Robust screw-less mesh grille included, with black screws provided
9. Die-cast aluminum frame
10. Solid horizontal 8AWG spring-loaded terminals
11. EID: Scan, Discover, Identify
| Nominal diameter | 300 mm (12 in) |
| Impedance | 4 Ohm |
| Power Handling - Peak | 1000 W |
| Power Handling - Continuous | 500 W |
| Sensitivity | 85 dB |
| Frequency Response | 25 - 400 Hz |
| Voice Coil Ø | 38 mm (1.5 in) |
| Chassis Material | STEEL |
| Magnet Material | HIGH DENSITY FLUX FERRITE |
| Magnet size D x d x h | 156 x 60 x 36 mm (6.14 x 2.36 x 1.42 in) |
| Voice Coil Material | COPPER |
| Cone Material | POLYPROPYLENE |
| Surround Material | Nitrile rubber (NBR) |
| Xmax | 16.8 mm (0.66 in) |
| Xmech | 20 mm (0.79 in) |
| D | 262.59 mm (40.701 in) |
| Re | 3.4 Ohm |
| Fs | 23 Hz |
| Le | 3.75 mH |
| Vas | 62.13 l (2.194 ft) |
| Mms | 320 g (11.288 oz) |
| Cms | 0.15 mm/N |
| BL | 18.7 T•m |
| Qts | 0.42 |
| Qes | 0,45 |
| Qms | 6.3 |
| Spl | 85 dB |
| Reference Efficiency | 85 |
| Mounting Depth | 89 mm |
| Dimension A | 318.3 mm (12.53 in) |
| Dimension B | 282.5 mm (11.12 in) |
| Dimension C | 108.88 mm (4.29 in) |
| Dimension D | 89 mm (3.5 in) |
| Dimension E | 291.8 mm |
| Dimension F | 42.6 mm |
|
| VB l | 22.7 (0.8 cu. ft.) |
| FB Hz | 45 |
| QTC | 0.78 |
| W mm | 510 (20.08 in) |
| H mm | 406 (15.98 in) |
| D mm | 160 (6.3 in) |
| Mounting Hole mm | 283 (11.14 in) |
| Wood Thickness mm | 16 (0.63 in) |
| VB l | 22.7 (0.8 cu. ft.) |
| FB Hz | 45 |
| QTC | 0.78 |
| W mm | 770 (30.31 in) |
| H mm | 406 (15.98 in) |
| D mm | 115 (4.53 in) |
| Mounting Hole mm | 283 (11.14 in) |
| Wood Thickness mm | 16 (0.63 in) |
| A mm | 510 x 406 (20.08 x 15.98 in) |
| Qty Pcs | 2 |
| B mm | 510 x 128 (20.08 x 5.04 in) |
| Qty Pcs | 2 |
| C mm | 374 x 128 (14.72 x 5.04 in) |
| Qty Pcs | 2 |
| A mm | 770 x 406 (30.31 x 15.98 in) |
| Qty Pcs | 2 |
| B mm | 770 x 83 (30.31 x 3.27 in) |
| Qty Pcs | 2 |
| C mm | 374 x 83 (14.72 x 3.27 in) |
| Qty Pcs | 2 |
| Suggested Subsonic filter cut-off | 15 Hz / 24dB Oct |
| Suggested Lo-pass filter cut-off | 70-80 Hz / 24 db Oct |
| VB l | 36.8 (1.3 cu. ft.) |
| FB Hz | 33 |
| W mm | 836 (32.91 in) |
| H mm | 422 (16.61 in) |
| D mm | 165 (6.5 in) |
| Mounting Hole mm | 284 (11.18 in) |
| Wood Thickness mm | 16 (0.63 in) |
| Z mm | 146 (5.75 in) |
| P mm | 133 (5.24 in) |
| S mm | 60 (2.36 in) |
| Lp-Port Length mm | 460 (18.11 in) |
| VB l | 36.8 (1.3 cu. ft.) |
| FB Hz | 33 |
| W mm | 1112 (43.78 in) |
| H mm | 422 (16.61 in) |
| D mm | 130 (5.12 in) |
| Mounting Hole mm | 284 (11.18 in) |
| Wood Thickness mm | 16 (0.63 in) |
| Z mm | 146 (5.75 in) |
| P mm | 98 (3.86 in) |
| S mm | 81.4 (3.2 in) |
| Lp-Port Length mm | 460 (18.11 in) |
| A mm | 836 x 422 (32.91 x 16.61 in) |
| Qty Pcs | 2 |
| B mm | 836 x 133 (32.91 x 5.24 in) |
| Qty Pcs | 2 |
| C mm | 390 x 133 (13.39 x 5.24 in) |
| Qty Pcs | 1 |
| D mm | 330 x 133 (12.99 x 5.24 in) |
| Qty Pcs | 1 |
| E mm | 444 x 133 (17.48 x 5.24 in) |
| Qty Pcs | 1 |
| A mm | 1112 x 422 (43.78 x 16.61 in) |
| Qty Pcs | 2 |
| B mm | 1112 x 98 (43.78 x 3.86 in) |
| Qty Pcs | 2 |
| C mm | 390 x 98 (15.35 x 3.86 in) |
| Qty Pcs | 1 |
| D mm | 309 x 98 (12.17 x 3.86 in) |
| Qty Pcs | 1 |
| E mm | 444 x 98 (17.48 x 3.86 in) |
| Qty Pcs | 1 |
| Suggested Subsonic filter cut-off | 20 Hz / 24dB Oct |
| Suggested Lo-pass filter cut-off | 60-70 Hz / 24 db Oct |
1. Ultra-shallow overall depth
2. 500W continuous power handling
3. Optimized for extremely-compact sealed enclosure 20-24L (0.7-0.8CF)
4. Air Intercooling Revolution (A.I.R.) prevents air-compression-related limitations
5. Unrivalled mechanical excursion, +20% over traditional designs
6. Six-layer copper voice coil (38mm/1.5 in.) ensures high thermal capacity
7. Non-vented rear design allows reduced enclosure depth
8. Robust screw-less mesh grille included with black screws provided
9. Die-cast aluminum frame
10. Solid horizontal 8AWG spring-loaded terminals
11. EID: Scan, Discover, Identify
The exclusive technology providing the traceability of the Mille.3 products from their birth on. Once the test phase has been passed, the code linked to destination country/market is applied. When purchasing the product, by scanning the code, the user can check through the web the information about the product and can log into the registration page.
Hertz R&D has developed the proprietary AIR (Air Intercooling Revolution) technology, optimizing the fluid dynamics inside the voice coil inner chamber and the magnetic group to minimize the internal compression of air and maximize cooling capacity.
