SouthPole1989

hi, i was looking at an amp for my alpine 12" type r and i saw the MTX Thunder1501D and it has to specs: 1k at 2 ohm then 1.5k at 14.8 volts. so what i assume is that when i run it off the battery i get 1k rms but when i start the car it be comes 1.5k rms? and also for a midbass sub would it be better to get a a/b class amp or a d class amp?

AudioFreak

You're safe with that amp. But yes the higher the voltage of your electrical system, the higher the wattage you will get. Some amps (i.e. JL) have a regulator that keeps them at an exact wattage no matter what the voltage or resistance.
Also, a 12 is NOT a midbass sub. It's a bass sub. Midbass is something you would see out of a powerful component woofer. Stick with the D class on the sub.

Satyllac

A 1501D would pump a Type-R with ease, and then some. You might be more inclined to run a pair of DVC 2 Ohm Type-R 12"s off a 1501D, wired to 2 Ohms of course.

If you're planning on running some midbasses as well, it really depends on which frequencies you'd be playing. Most Class-D amps are crossed over at around 200 Hz, which may or may not be high enough for your midbasses. There are some full-range Class-D amps though, such as Xtant's 1.1i. What sort of midbass are you planning on, a pair of 6.5"s or something?

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SouthPole1989

i plan on running eu-700 for the midbass

Satyllac

Get a good four-channel amp (or two two-channels) for the fronts and mids, and a nice monoblock for the subs.

Fronts: Front channels on four-channel.
Mids: Rear channels on four-channel.
Subs: Monoblock.

Or if you'd rather really get into it, run a four-channel, a two-channel, and a monoblock.

Tweeters: Front channels on four-channel.
Mids: Rear channels on four-channel.
Midbass: Two-channel.
Subs: Monoblock.

Just be sure to have the appropriate crossovers on your tweeters and mids.

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*Note To Self*
Spend less on car, more on guns.
*/Note*
-Randy

SouthPole1989

heres the amps that i plan on getting.

http://www.cbrstereo.com/index.asp?P...ROD&ProdID=422 for the speakers and tweets.

http://www.cbrstereo.com/index.asp?P...ROD&ProdID=418 for the eu-700s

http://www.cbrstereo.com/index.asp?P...ROD&ProdID=430 for the subs.

now do tweet come with a crossover like compenots speaker do?

YorNamHere

If they come in a component set than they will have a crossover. If you buy the tweeters by themselves I don't think they will have a crossover (at least I haven't seen any with one).

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28:06:42:12

SouthPole1989

this may sound stupied but couldn't i just take off my tweeters from my exsiting speakers and solider new leads to them.

SonnyD

If you put your old tweeters with a different crossover it will need a compatible rolloff for your old tweeters, or you can cap them.
Regards Sonny

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Satyllac

Unless you know what the Fs and impedance of your stock tweeters are... I'd highly suggest you go with a matched component set. Or just buy some coaxials.

__________________
*Note To Self*
Spend less on car, more on guns.
*/Note*
-Randy