Feel the power of 15 inch subwoofers
A common thing to do on 2+2 seater sports cars such as the mitsubishi 3000GT VR4 is to get rid of the two rear seats for a sound system install or a carputer setup. The reason the tiny rear seats exist in those cars in the first place is to keep them in a lower insurance bracket as four seater family cars rather than 2 seater race cars. Realistically though, the largest person to be able to fit comfortably in such a seat is probably a 10 year old child.
Here’s one great example of a rear seat delete. This is a fiberglass enclosure where the rear seats used to be and the whole arrangement with a single center mounted subwoofer is pretty ominous. The center subwoofer is a single Rockford Fosgate T2 15 inch subwoofer.
The central placement of the subwoofer and the implicit lettering on the aluminum cone “POWER” amplifies it’s presence. On each side of the woofer is a large 5″ bass port aimed directly towards the back of the driver and passenger seats for a maximized effect.
Below the subwoofer, the owner has mounted a digital volt meter to monitor the car’s voltage with every single hit of the RF-1000 , 1000 Watt amplifier. I personally would rather use a purely analog gauge or a needle based gauge to reduce the amount of ‘averaging’ in the voltage reading… By doing so, you’ll be better able to see how low the voltage dips (if it does) during a bass hit and you can fix that problem, if it exists, with a capacitor for power storage and larger gauge wiring for faster current delivery.
What’s really cool about this subwoofer is that Rockford Fosgate has engineered it as a low hitting subwoofer optimal for a vented enclosure. RF does not recommend using this subwoofer in a free air installation or in a sealed box. But rather, placing this subwoofer correctly in a properly designed (fairly small sized box) can hit frequencies as low as 36 hz with authority from a tiny 2.25 Cuft box. This is exactly the power and uniqueness of 15 inch subwoofers as smaller subwoofers will not be able to generate that much sound (and thus, that much feel) at such a low frequency. To hit this tuned frequency (Fb) of 36hz, RF recommends a long (17″) and wide (6″) bass port to help the box breathe and resonate.
This dual voice coil sub is no lightweight, with a total weight 50lbs and a driver weighing in at 304 oz with a dual voice coil triple stacked driver, the sub is rated for 1000 watts RMS and 2000 watts at peak.
Note: Find out more about how you can feel the power of 15 inch subwoofers, and save over $500 off retail.
Note: Click here to get your own 7 color voltage display gauge and save $46 dollars off retail.
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