Comments on: Car Stereo System/Subwoofer/Amplifier question?

By: Pablito

Pablito — Fri, 30 Nov 2007 04:41:34 +0000

Ok I could go on and write 2 or 3 pages on this. But I would recommend for you to go to a store pretend like you are really gonna buy something and try stuff out then when you like something gt the models ( amp and subs) then go to eBay and buy them there CZ you will find it way cheaper Plus stores always want to stick you with something that you might not need or that its more expensive good luck

By: C C

C C — Thu, 29 Nov 2007 03:32:48 +0000

There’s no good way to compare subs just based on the size of the cone.

10″ is usually more crisp than 12″, whic is more crisp than 15″

However,

15″ is usually deeper and louder than 12″ which is deeper and louder than 10″

If you’ve never had subwoofers before, I suggest you get yourself 1 12″ sub rated for approximately 300 watts RMS, and find an amp that can do that as well.

Check the resistance on the sub, find one that is 4 ohm. Then, pick out a Class A Stereo amp that is “stable at 4 ohm bridged” for 300 watt rms. It should be plenty.

It’s also important to pick the right sub. Ask around and see what subs are good for you to get. Punch subs by Rockford Fosgate have always been a good starter sub.

And for some more of the technical stuff, if you have 1 sub that is rated for 400 watts rms, then you should buy an amp rated for 400 watts rms. If you have 2 subs that are rated for 400 watts rms, then you’re going to have to step it up and buy a sub that is 800 watts rms, or 400×2 watts rms.

Hope this helps.

By: Alpine Audio ?

Alpine Audio ? — Wed, 28 Nov 2007 00:31:32 +0000

Okay you just dont want your MAX amp output to pass your MAX sub output by too much. 10% is a guideline for no more than that excedance.

RMS is key.
Its the nominal power
Youd like your amp to be close to your subs RMS for good ratio and to decrease overheating and overpowering/underpowering

By: altima

altima — Sun, 25 Nov 2007 15:06:06 +0000

ok for example:
2 12″ subs that are dual voice coils
1000 watts / 300 rms

adds up to be 2000 watts 600rms

for this you need a amp that goes around there if you get one that is smaller then you run the risk of over heating the amp

as far as the 10″ or the 12″ it depends on the watts that the 10″ can handle and if you really need the trunk space there are ten inch subs that hit as hard as 12″ but it all depends on what you want and when if you buy the amp first you shood get subs according to the rms not the watts