Description
Overview
The Master Series M10 subwoofer is a shallow mount, high stroke, low distortion subwoofer. Using a flat composite fiber cone with a dual gap magnetic structure, the M10 yields 30mm of peak to peak linear excursion and 50mm peak to peak mechanical excursion in a package with a 3 15/16″ (100mm) mounting depth. The 2.5″ (63.5mm) diameter voice coil with aluminum former ensures high power handling.
The M10 flat cone is a composite of 3 different fibers with a proprietary structural core. These four layers are laminated together with a high-strength resin that is vacuum impregnated into the assembly. The result is a very strong but light cone, so that rocking modes are reduced but cone flexion is eliminated.
The M10 uses a ferrite magnet of Y35 grade. With the machined 1010 grade steel for the yoke and washers, the resulting in-gap field strength is 0.8 Tesla. Combined with the 4-layer copper voice coil, the resulting BL is over 20 N/A (for the DVC4 variant with voice coils in series).
The 24mm thick dual gap top plate assembly features a 10mm tall and 5.7mm deep rebate. This allows for extended travel and greatly flattened BL (motor force) over stroke. The rebate is filled with a 3mm thick aluminum ring to reduce inductance to just 0.7mH, resulting in usable bandwidth to 2 kHz, for exceptional transient performance.
Crossover Frequency
As the M10 is a subwoofer, it should be low passed as low as possible. The actual frequency of crossover should be determined by the capability of your components that cover the mid-bass/midrange frequencies. Typically a crossover point below 80 Hz is recommended; if the M10 is used up-front (in a door, kick panel, or under seat application), the crossover point can be raised. Raising the crossover point can pull the image more towards the M10, but it can also increase the mid-bass output of the system. As always, every install is different and final system settings should be done based upon your application and mating equipment.
Power Handling
Power handling for subwoofers has two basic considerations: thermal power handling and mechanical power handling. It is quite possible to place a subwoofer inside a cabinet where the thermal power handling limit is reached well before the mechanical (motion based) power handling limit. Likewise, an enclosure can result in excessive motion and reaching the mechanical limit well before the thermal power limit.
Thus when installing a subwoofer one must consider the application in which the subwoofer will be installed, and ensure an appropriately sized and set up amplifier is used to drive the subwoofer. It is often said “clipping kills speakers”; for subwoofers this is not necessarily true, as it is better to clip an amp a bit than to overpower a subwoofer.
Application Guidelines
The M10 woofer is best used inside an enclosure. Small sealed or ported enclosures are recommended. It can be used infinite baffle (rear deck, doors) but protection from the elements should be provided for the rear of the woofer. The best application is completely dependent upon the vehicle, position within the vehicle, and desired output and bandwidth of the system. Your installer should be able to use the provided information above to determine an ideal enclosure for your application.
However, we do provide a few suggested volumes for various applications based upon a goal such as smallest size, maximum extension, high output, or a combination thereof. Results are based on an assumed 100 Hz 4th order low pass filter. Ported and bandpass assume a 25 Hz 2nd order high pass (rumble) filter.
| Parameter | Small Sealed | Large Sealed | Ported | 4th order Bandpass |
| Box Volume (L) | 0.5cu.ft.
14 liters net |
1.0cu.ft.
28 liters net |
1.94cu.ft.
55 liters net |
0.5cu.ft. (14.3L) Sealed /0.5cu.ft. (14L ) ported |
| Port Dimensions (mm) | N/A | N/A | 2 x 2.5”(63.5mm) dia x 18.5” (470mm) Long | 2 x 2.5” (63.5mm) dia x 22.83” (580mm) long |
| Free air max SPL (dB) | 108 dB @ 64 Hz | 107 dB @ 55 Hz | 109 dB @ 38 Hz | 107 dB @ 35 Hz |
| Power Handling (W) | 600W | 400W | 400W | 400W |
| Free air F3 (Hz) | 40 Hz | 34 Hz | 27 Hz | 26 Hz |
The M10 displaces 0.056cu.ft. (1.6 liters) of air when installed in a cabinet.
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