how to choose the right amount of power.

i just need opinions. ok im gonna be making my own fiberglass enclosure fit to handle 4 rockford fosgate power t2's. I was doing the math and each sub can do 800rms constant. Thats about 3200w constantly needed. Should i put 2 RF power T20001bd amps that push about 2000w+ each or one RF T40001bd amp that does about 4000w+? any one who knows car audio knows rockford subs are always power hungry. each sub is capable of 1600w max.

...do you have a charging system that can supply an amp that large??? I would start there before you worry about high current amps if you haven't already...

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...don't crush the weasel...

tubbs04 wrote:

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...do you have a charging system that can supply an amp that large??? I would start there before you worry about high current amps if you haven't already...

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true..... 

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Yours Truly

First you need a very very high output alternator, secondly, with that kind of power your fiberglass box better be thick, very thick!, and thirdly I would go for the 4000 watt amp and take it easy on the amplifiers gain.

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2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.

I would like to know how good those T2's compare to the T1's and the P3's as far as being are they worth the extra $100 or so more per sub if anyones reading this post and has heard all 3 sets

2fas4ya wrote:

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I would like to know how good those T2's compare to the T1's and the P3's as far as being are they worth the extra $100 or so more per sub if anyones reading this post and has heard all 3 sets

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the T2's are stronger and can handle more power. the rubber on the ring is thicker than the T1 and the P3 doesnt even compare to the power series. i think the T1 can do the same as like 2 or 3 P3's. i already have a very high output alternator. and i got really bored so i bought the newest capacitor from Rockford. the 10farad cap.

change of plans. same kind of set up but i might put 6 POWER T2's.

Are you sure you can fit 6 subs in your vehicle while giving each and every sub the required air space?

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2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.

yea it is a 1997 chevy tahoe. MASS amount of space. but i have grounded myself to putting 4 subs and 2 mids. dont know where the mids will go mayb on the doors with a custom enclosure or put in w. the subs in the same box. idk yet. but we will find out.

.... i got a '97 tahoe too....

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...don't crush the weasel...

tubbs04 wrote:

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.... i got a '97 tahoe too....

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4 door or 2 door? what system do you have in it?

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I would like to see some pics of the setup when finished..

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"I'm So Loud It Hertz"

yea no problem. its gonna take a while tho. i have some major idea before and after the fabrication.

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cartechaudio wrote:

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tubbs04 wrote:

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.... i got a '97 tahoe too....

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4 door or 2 door? what system do you have in it?

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its a 4 door... I'm running 2 vega series cerwin vega 12s on a kenwood 401m excelon.. fixing to switch up to the stroker pro 12's or the MA audio hk12's.... either or I will be running (2) HK2000D MA amps... I have all MA Audio components, mid bass drivers, and 4 channel... I do enjoy my MA

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...don't crush the weasel...

pretty sweet. have any set-up pics? i guess i love my rockford aswell. lol

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no pics yet... it's fixing to go through a gutting process after yesterdays bs... I'll post the build...

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...don't crush the weasel...

hey silly question but i wanna know what you guys think? ok for starters what size fuse should i use for my install. i was thinking of 2 100amp fuses since there are gonna be 2 amps. and should i go with an ANL type or should i use an AGU type fuse.

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Well, since AGU only comes in values up to 80A, I'd say you're stuck with ANLs.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

ok thanks. but what size? 100,200,300 500?!?

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add up all the fuses you have on your amp(s) (ex: if you have (3) 30 amp fuses, I would put a 100 infront of it... always have a little more than you need...)

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...don't crush the weasel...

tubbs04 wrote:

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add up all the fuses you have on your amp(s) (ex: if you have (3) 30 amp fuses, I would put a 100 infront of it... always have a little more than you need...)

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While that is not WRONG, it's not complete... The primary fuse is NOT there to protect the amplifiers. You are installing the primary fuse to protect the wire and the car. It's value will be based on the size of the wire in which it is installed:

#8 - 100A
#4 - 150A
#2 - 225A
1/0 - 350A

There was a long thread about this recently - it was so full of CORRECT information, it became a sticky! Read it, know it, live it!

Based on the above chart, and the response posted by tubbs04, if you only had 90A worth of amplifier capacity, you would only use a #8 wire (fused for 100A) in your installation.

While it isn't unsafe to put in a fuse smaller than is necessary, why insist on the additional expense of a wire that is larger than you have to have? Fuse for the wire size, not the current draw, and size the WIRE for the current draw.

Or more correctly, add up the total of your fuses (example 3 - 30A fuses = 90A of capacity) and a #8 is capable of supporting 100A, so why use a wire larger than a #8? Install a #8, and then fuse it for 100A, as that is what it is capable of carrying safely..

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

What would we do without haemphyst??? hahaha, Thanks for the correction/completion of my answer. Never really understood it was for protecting the vehicle... Just thought it was another safety feature so as not to turn amps krispy! makes sense though... just a little disapointed that it just now came to my attention... better late than never i guess...

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...don't crush the weasel...

Thanks Guys! hey any body got some photos of their ride? maybe we could all share idea and opinions. i know there is a section devoted to that but the rides we too funny to keep looking at.