You would need Four DC Audio 7.5k for 15 Digital Designs 9918Z 18 subwoofers.
15 subwoofers would produce 15 times as much power. log1015 = 1.176; to convert that to decibels, you have to multiply it by 10, so you get an increase of 11.76 decibels, in other words, 180 + 11.76 = 191.76 decibels. Since the 180 decibels probably includes some rounding, it makes sense to round the final result, too - for example, to 192 decibels.
There are many places where one could purchase Orion subwoofers. The best place to purchase Orion subwoofers would be electronic stores like Best Buy or Amazon.
it is kinda hard to tell exactly what you are asking with this question, but there are no stock subwoofers in any newly purchased car. The only thing that would be close would be your 6x9s or 8s with the bass turned all the way, this may sound like a subwoofer. >Note: Some Eddie Bauer edition Explorers came with subwoofers
Car subs, or subwoofers, is a woofer. A woofer is a speaker dedicated to bass sound only. Car subs would be subwoofers used in cars and not for use in the home.
(2) 10" subwoofers (with the limited room) will probably work the best. (2) 10" subwoofers (with the limited room) will probably work the best.
I'd say 2 12" subwoofers would be perfect.
Some of the benefits of using home subwoofers would be to get a better sound from your TV or stereo to which the subwoofer would be hooked up to. Another benefit is that if one likes more of a base sound they can adjust the settings to give them that affect.
Depending on the desired sound quality and the size of your car, your best bet would be to stick with 10" or 12" Subwoofers as these would take up a moderate amount of space and offer lower frequency response (i.e. deeper bass) than 8" or 6.5" subwoofers. Pay close attention to the maximum RMS wattage and the size of the magnet (bigger is better).
The best place to get subwoofers for a car audio system fitted would be at a mechanic's garage. Or, one could try to learn how to install them on his or her own, as there are many sites that offer tips and advice on how to do this.
Why would for want to you idiot!
To power your speakers, and to ensure that your amp has enough power to power your subwoofers, you would need at least an amp of 750 watts true power.
In order to find out the different backyard landscape designs, you would have to visit a landscaping company or your would have to phone a contractor to find out the different backyard landscape designs.