My future system...need help on an amp.

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[Highvelocity89]

I'm a complete noob to automotive audio, I am not, however a complete noob to audio in general though. So, please, if you see something incorrect, let me know. I get alot of constructive criticism from my dad with his being in the army his whole life.

Alright, planning on tossing two of these Alpine Type-R 12s into this bandpass enclosure.

Now, the amp. I know the RMS of the amp needs to be 75%-90% of the sub's RMS. SO, that being said I was thinking about going with this Boss GT2500D monoblock amp and wiring it like this.

I'm told the way you wire a car audio system is alot more important than if you were wiring a home theater system.

Also, I'm not a huge fan of rap. I do like select artists, but not many. I'm sure I'll listen to my fair share of it though to show off my system to my friends . I was told that since the primary music i was going to be playing isn't going to be rap that i shouldn't run a 2 ohm setup and run with a 4 ohm setup...don't know if that's or true or not but thats what i've been told by a couple of my friends.

Any and all help is much appreciated, thanks.

-Stephen

[DiscoStudd]

Just some pointers:  Run your amp's power cable directly to the battery and not to the Auxillary Positive terminal.  Run the power wire and amp turn-on lead down one side of the car, and your audio cables (RCA and speaker wires) down the other.

If you want the best sound, get a set of component speakers, mount them in the front doors, and amplify them.  Unless your original rear 6X9's are blown, leave them in place and run them off of the headunit.  You want to set your soundstage up front.  No matter what music you listen to, a good sub will round out your system.  I listen to rock and I've never run anything larger than a single 10" (in a bandpass box no less) and the extra added punch, no matter how small, really brings the music to life.  I'm not a fan of huge subs, because you want your sub to compliment your setup, not overpower it...

[Dstanic]

couldn't have said it better myself!  

My Impala has pretty nice sound for stock, but if I ever upgrade the speakers I'll be stuffing components in the doors (replacing the factory components) and pretty much doing what Disco said..

[LownSlow]

just do a sealed box w 2 separate compartments or 2 separate boxes.  bandpass boxes are a waste, imo.  

i always buy an amp thats at least the RMS rating of the subs and turn it down so its not overworked.  youll need to run it at the ohms required to push the rms of the subs.  2 ohm vs. 4 ohm isnt going to sound different, itll just give you a power difference (which will sound different obviously in the long run).  kinda confusing, but i hope you know what im saying. if you get 2 4ohm dvc subs, youll either run 1 or 4 ohms, not 2 or 4.  i would get something that runs 500+ x2 @ 4 ohms. even better yet, 1 mono amp per sub that runs 500 x 1 at 2 ohms.  that is totally the wrong amp.  
http://www.rockfordfosgate.com/rftech/woofer_wizard.asp

[DiscoStudd]

My Impala has pretty nice sound for stock

Hell yeah, those Impalas' stock systems boot pretty damn loud!  They've got a nice separation of mids and highs, too (not 100 perfect, but better than any stock system has a right to.)

I've got the Boston 6.5" components out of the Regal sitting in my computer room, but I don't know that they'd make much of an improvement over the Impy's stock setup.  I'm thinking about just adding a 10" Bazooka (w/integral amp) to the stock setup and calling it a day.

[Dstanic]

I've got the Boston 6.5" components out of the Regal sitting in my computer room, but I don't know that they'd make much of an improvement over the Impy's stock setup.  I'm thinking about just adding a 10" Bazooka (w/integral amp) to the stock setup and calling it a day.

You'd likely have to amp the Boston's to make it sound better, it might sound like crap running of the stock HU.

A 10" Bazooka would be nice for a little extra kick though!

[19Cutlass94]

I love my elementals!

[DiscoStudd]

You'd likely have to amp the Boston's to make it sound better, it might sound like crap running of the stock HU.

Definitely.  I wouldn't even run them off of the stock amp.  The amp I have for them pushes out 45 watts RMS per channel, so they'd sound totally weak connected directly to the HU or the stock amp.

That's the whole reason I don't want to install them in the Impy.  It took me two 8-hour days to get those speakers and the amp wired and installed in my Regal (counting fabbing up the speaker brackets and amp mount) so it's not something I'd be looking forward to doing any time soon.  Wiring up a Bazooka on the other hand would be a piece of cake!

[tijuana_no]

I've got the Boston 6.5" components out of the Regal sitting in my computer room, but I don't know that they'd make much of an improvement over the Impy's stock setup.  I'm thinking about just adding a 10" Bazooka (w/integral amp) to the stock setup and calling it a day.

You'd likely have to amp the Boston's to make it sound better, it might sound like crap running of the stock HU.

A 10" Bazooka would be nice for a little extra kick though!

I  have a friend that has a set of mbquart QSD'S components on his stock h/u in his impala and they sound very nice and strong midbass.

[tijuana_no]

I'm a complete noob to automotive audio, I am not, however a complete noob to audio in general though. So, please, if you see something incorrect, let me know. I get alot of constructive criticism from my dad with his being in the army his whole life.

Alright, planning on tossing two of these Alpine Type-R 12s into this bandpass enclosure.

Now, the amp. I know the RMS of the amp needs to be 75%-90% of the sub's RMS. SO, that being said I was thinking about going with this Boss GT2500D monoblock amp and wiring it like this.

I'm told the way you wire a car audio system is alot more important than if you were wiring a home theater system.

Also, I'm not a huge fan of rap. I do like select artists, but not many. I'm sure I'll listen to my fair share of it though to show off my system to my friends . I was told that since the primary music i was going to be playing isn't going to be rap that i shouldn't run a 2 ohm setup and run with a 4 ohm setup...don't know if that's or true or not but thats what i've been told by a couple of my friends.

Any and all help is much appreciated, thanks.

-Stephen

i am not a big fan of boss amps ,but they also use a few amp companies to make there amps and there are some built in the u.s. that are good.
the specs. on this amps are very good i hope that the signal to noise ratio
at 100 is true and 24 db crossover.i would use this amp at 2ohm with the alpine R woofers  ,because of the power 900x 1 at 4 ohm alot of companies rate there amp power at 14.4 volts and is hard to keep a boomimg system at 14,4 volts ,so you gave less power and amp work harder to keep up (warms up) amps hate heat.
and about a box seal or ported ,is how you listen to music poted is more punchy and seal is more musical,ported is tune to frequency respond and seal will respond to frequencies being played usually 240 or lower on woofers.this petty lame explanation on boxes and woofers,but i want to make it simple not to technical.
also a friend of mine sells boss amps ,if you want i can get more input on that amp from him

[Breakdown]

Now, the amp. I know the RMS of the amp needs to be 75%-90% of the sub's RMS. SO, that being said I was thinking about going with this Boss GT2500D monoblock amp and wiring it like this.

I was running an el-cheapo 200 Watt Amp (it was purple okay) to power a pair of 450Watt 10" Subs and to be honest it did better than well.  Last year I replaced with a 1200 Watt Amp in the trunk and it has increased loudness by 10% and sound accuracy by 10%.

Not really good bang for the buck.  It really depends on where your speakers are gonna be.  For me I run a stock system (head unit and all - I like my steeering wheel controls and not having the car broken into) and then splice the rear speakers into a high-low and then into the amp it reduces quality, but having a sub that tries to blast sound through the back seats also losses quality!

The only big difference that I experienced in amps is what they did to the rest of the car.  The 1200 Watt killed the alternator.  Depending on what you do and how you do it, you might want to look into an upgraded heavy-duty alternator.

[LownSlow]

ive always had good luck w/ cheapo lightning audio amps