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- A subwoofer's voice coil is a coil of wire that runs along the apex of the cone of the subwoofer. Much of the speaker's power is created through the magnetic field the voice coil produces. Generally speaking, the larger the voice coil, the more powerful the subwoofer. The MTX Thunder has three different models with either a single 10" or 12" voice coil, or what they call a dual 12" voice coil. The dual voice coil allows for the subwoofer to be wired more easily because there are two connections that can be made.
- All three voice coil models provide 250 W average power, and can reach a maximum of 750 Watts. However, the models with the 12" coil can give a little more power, up to 800 Watts. They all have an impedance of 4 Ohms, which makes them compatible with most car speaker systems. This is plenty of power to fill any car with bass sound that can match the car's speaker system.
- The 10" voice coil model has a frequency range of 35khz-150khz, while the 12" voice coil models have a frequency range of 27khz-150khz. Music can have playable frequencies that reach below this, as low as 20 khz, but this covers most of the humans audible range. The subwoofer provides a slight boost in power between 40khz and 70khz, though has a significantly weaker signal below 40khz and above 80khz.
- The spider is a piece of cloth that covers the subwoofer which maintains control over the voice coil and keeps everything in place. The MTX Thunder subwoofer features "Spider Plateau Venting Technology" which allows the speaker to vent some of its heat as the spider moves the voice coil around. Small, eight inch holes are located at the bottom of the subwoofer. Every time the subwoofer expands, these holes are exposed, allowing air and heat to rush out.
Voice Coil
Power
Frequency Range
Spider
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