New build, need advice on a Rockford build

[greggtr]

Hi guys,

New to the forum so be nice

OK here is the issue... I'm building a new project car (specs see below) and need advice

on the sub box size to get max SPL...

Car: 2004 Smart Fortwo

Deadening: Dynamat Xtreme (everywhere)

Head Unit: Pioneer Avic

Doors Spk: 1 pair of Rockford T2652-s Splits per door (Tweeters in the dash)(fully sealed enclosure)

Dash Spk: 2 pairs of Rockford T252-s (fully sealed enclosure)

4Ch Amp: Rockford T600-4 (85+WRMS to each speaker)

Sub: 1 Rockford T2D215 15" sub

Mono Amp: Rockford T1500 amp (1800WRMS)

Battery: 1 x 1000cca lead battery

Cap: Rockford 10Farad

Wires: 0G to the cap and 4G to the amps

The problem is I dont want to build a wall and I dont want more than 1 sub. The aim is a box around 3.5-4 cubic foot with two 4" flared ports.

Firstly is the box too big?

Secondly are the ports too small?

And most importantly should it ge into the 150's dB?

thanks

Greg

[Watch the bass]

To the improtant o dB´zzz only if you build a good burpbox.

2. Throw the cap out of your plan, caps are only usefull if you have a strong electrical system what you wan t to make stronger.

A second batt is recommanded, and a AGM not lead acid. And threw the Danymat have a look in the second skin section, there

is a thread about useing dampingmaterials economical and effective.

Last are you from the US or other country, maby we can give you some exactly tips on better/usefuller stuff.

[greggtr]

Thanks for the reply...

I dont want a "burpbox" I want a sub system that can go VERY loud

while still sounding good (hence all the mids and tweeters)

This car will be used as a daily not just for SPL comps...

The project is 3/4 complete; dynamating, doors and dash are complete,

the only things left are the battey (most likly 1 x ODYSSEY PC1750) and the

sub box.

I was advised that the recommended ported box size of 2.75' is too small for Max SPL,

I can spare 3.5-4', The question is; should I use the max space available or stick to the

2.75'? And the recommend port diameter is 6" can it be 2 x 4" and what are the downfalls

of that?

thanks

Greg