is a 230amp alt. big enough

by hotrod1000x
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I'm have two 12" alpine X type,two alpine 6X9 R type(back window),and two alpine 5 1/4" R type(doors) and than all three amps pdx4.100, and two pdx1.1000. So now is a 230amp alt. going to be enough power?
Do I need a Capacitor? If so how meny fadar?
Thanx for the help.


Replies (9)
newB on 03/4/2009 00:23:48
what brand alt?

if you go with DC power inc, Irraggi (sp?), power master, Excessive Amperage, or Ohio Gen then should do almost 150A at idle and no you will not not have any problems nor will you need a capacitor
-Drew

MrBrownstone on 03/4/2009 01:13:46
I doubt you'll max out the alternator. Those class D amps won't suck that much current, although I'd be a little concerned about the installation.

Detail for us a little more on how you plan on implementing the whole system. You probably have too much sub power considering your front end speakers....

What type of woofer box design are you going with, etc.


hotrod1000x on 03/5/2009 16:55:50
Well I don't really know lol what I'm going to do at this point. I would love for you to guide me in the direction I should go with box desing,install"front end speakers" amps.... I can sell it as fast as I bought it. This is what I have in my house ready to go in..
cda-9887
pdx-1.1000(x2)
pdx-4.100
X-Type 12"(x2)
R-Type 6x9
R-Type 5 1/4 comp.
Now it has not been installed yet 'cause I was waiting for the alt. now I'm not sure if what I have is going to be good together. I never put alot of thought into the sub boxs/install. as far as the front speakers I was told that is what "will work best" (as per the sales person lol). The only things I really don't want to replace is the amps$$$ PLEASE HELP!!

kirchatndftbl on 03/5/2009 19:57:09
seems like a great set up to me.. some pretty nice gear

swez on 03/5/2009 23:17:46
As you can see, this is not the run of the mill install job. Running 3 amps and 6 channels is a big step. Are you sure you want to use both 1000.1 and dual SPX subs? Here's why I ask...

With these PDX- 1.1000 amps, they are new and strong amps as are the X series subs. But, that kind of power comes at a big price. Do you realize that each amp can draw up to 75A's of current and net about +3 to +6 dB more bass as paired? That's a lot of money invested for a few lousy dB more bass? THINK about that Okay? If you can flip 1 sub and 1 amp w/o a loss, you're a winner!

I'll stop here for now and let this sink in. Unless you plan to do a lot of DB Drags and get some prize $$$ to recoupe your expenses, it's a waste of time, $$$ and efforts.

Comments?
Swez

MrBrownstone on 03/5/2009 23:27:16
I guess now I have a couple more questions:

-What are you looking to accomplish with this system?
-What is most important to you, the quality of sound or sheer volume?
-Are you prepared to spend 40 hours installing it yourself?

I can assure you a few things, if this is your first major system, it may take 60 hours. I can also assure you that you don't even need the new alternator if you don't use (2) PDX1000s

Here's a link that talks a little more about my strategy for selecting and utilizing car audio components:

http://www.caraudioknowledge.yuku.com/topic/895/t/Selecting-Car-Audio-Products.html



hotrod1000x on 03/6/2009 14:19:34
-well I want a system that is bone rattleing load.
-STUPID VOLUME
-I think I'm haveing a pro do it.
Don't get me wrong if you are saying it is over the top....BUT you can do the same for less, than by all means. This is the system I was told I was looking for by the Alpine sales rep. So I guess what I'm asking is... is this system what I was looking for or was it the "sales pitch" system.

swez on 03/6/2009 15:08:52
Well, we all have our own preferences, budgets and goals about many things in life. We have to decide what makes sense and then make plans as the end goal becomes fixed in the mind.

The Alpine Rep is obviously a skilled salesman and he threw out some great options to consider. Is he able to get you a sponsorship with Alpine USA to help with funding the project? (Like getting Alpine gear at cost?) That would sweeten the deal considerably.

Powering all 3 amps mentioned, depends on how hard you push the system and for how long at a time. A short duration demo is one thing. Banging around for hours at extreme SPL, is a very different matter. Which way do you want to go?

Finally, to custom install a rig like this from a Pro Installer can set you back a solid $2,000 plus the cost of the gear. Are you prepared to go that far? You have to be the judge of that and add one great alarm system to protect your gear as well as an insurance rider to cover losses if it happens.

Think it over,
Swez



newB on 03/6/2009 18:31:16
you have the gear for a solid daily pounder.

one H/O alt (250/270 for higher idle amps or 300/350 for more 2krpm amps) will handle all that gear with an extra battery and upgraded front bat

Apline did get you pretty good with their top of the line stuff, the "X" series is more of an SQL woofer in my opinion and there are better options on the market, especially in that price bracket. Those amps are solid i would not change them, only add more GRIN

So, post #1 sounds like it is a trunk car, probably an import. You want to put those woofers shooting into the cabin, with ports going either forward between the woofers or up between your rear fill speakers.

once you get the box and ports squared away, you want to completely seal the box face from the trunk, this can be done with fiberglass, rubber mat deadener, and many cans of expanding foam. you do NOT want to pressurize the trunk but rather the cabin where you and the passengers will be.

as an example i will post one of my previous builds:
Photobucket

Photobucket

Photobucket

if you do it right your rear seat will flip up hiding the woofers GRIN
Questions? Comments?

-Drew



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