8 replies to this topic

[Callan Fraser]

Hi all,
I'm new to the site and most would say new to car audio, though I've been dabbling in it for 8 years now.
I currently own 3x Type R 15's and I'm looking at upgrading to 4x 15's or 4x 18's.
I've been looking into the Rockford Fosgate T2 15's and although they're rated at 2400max, a few people have been giving them more and saying they love it and it wants more .. I'm looking at giving the subs 3000rms at 1ohm or 2000rms at 4ohm.
Should I opt for a sub that states it will handle 6000k max or will trial and error be a more effective approach?
thanks

[D34M0N.inc]

There only rated at 1200w rms each, never go by max ratings, infact ignore them all together.

From what i have heard and seen on vid's they don't like to much more than rated power. I would be looking at something else if your wanting something that takes atleast 2kw

[Lunchbox.inc]

as above,there's plenty of other options i would personally be looking at first, Rockford make some solid amps, but their woofers aren't exactly great value for money, they're not cheap, and for the same money you can get some VERY serious woofers...

but however, having seen your setup on faecbook, i would personally say you can achieve ALOT more out of your current gear... that is what i would be doing, you've got a fair bit of power on tap, plus 3x 15"s, so you should be able to achieve quite alot before stepping up to significantly bigger gear...


if your set on upgrading your gear, there's PLENTY of options out there, but the box will be BY FAR the most important part of the system, focus on a great box, and the gear becomes somewhat irrelevant...

[Callan Fraser]

I agree, I have always gone by RMS, and would always use equal RMS amp power, somewhere along the line I think I got coaxed into thinking Rockford subs were more than they made out..
I like the Type R's but have had them a while, and the Mrp m2000 on 3ohm doesn't quite sound how I'd like, I feel I need 3 1ohm stable amps at 1000w to please myself, on top of that its my daily drive and I need my music driving to and from work, around 60kms all up. I kinda decided a while ago that I wasn't going to wall the magna, when it worked out to be too much work to get it installed and I had a long weekend to do it, it was a bit of a smash and grab job just to get me going.
Although I don't want to throw much more money at it, I have been looking into more power (I was wasting a yellowtop under my bonnet) , HO alternator, possibly decreasing the impedance of the subs, cooling the amp (very hot in the car of an afternoon) and maybe even re-looking at the box sizes, which are to factory spec vented at the moment, ( 2.25ft3 internal, tuned to 32hz)
I just feel with a new car I'll get a chance to take my time a bit more, have more cash on hand and do it properly.
and 750w rms is not what I want anymore..
I was however looking at getting the rockford amps, probably the T2500bd, I feel being strappable they're very flexible.

[Lunchbox.inc]

honestly, unless you do by a dedicated car for it (which can be very rewarding, but very costly in the long run) then i would say about the best and simplest thing you could do would be to grab a 4th type R 15" and build a new box for all 4, just a single box at around 12cf or so, tuned low i think you'd be VERY surprised at the difference... the factory spec boxes are alright, but you can do much better with a larger, single chamber enclosure...

you'll also find that you have massive losses and cancellation with the woofers firing forward like that are, even in the standard boxes you have them in now, facing them backwards would make a nice audible difference...

[Hez]

honestly, unless you do by a dedicated car for it (which can be very rewarding, but very costly in the long run) then i would say about the best and simplest thing you could do would be to grab a 4th type R 15" and build a new box for all 4, just a single box at around 12cf or so, tuned low i think you'd be VERY surprised at the difference... the factory spec boxes are alright, but you can do much better with a larger, single chamber enclosure...

+1

Get a new box happening, bathe in the results.

[Callan Fraser]

Unfortunately they point forward because it was really the only way we could fit the boxes in pre made, that was about a year ago tho. I am seriously thinking of re-doing the boxes, but first i'll hit the alternator and see if I can any more power out of it.
If I throw another type R into the pic, I'll be running at 2 ohm, which means approx 500w per sub, is this going to be enough?
also I've read in certain places people running 1ohm loads on the mrp series amps, and they've been fine, I'm looking at possibly wiring the 3 dual 2's up as a 1.3 Ohm load, I'd keep an eye out for temperature, but what are your thoughts? I don't want to have to get another or more amps for this install. I still intend on building a bigger one, just thinking I need to iron out a few kinks before jumping into it ..

[Charger]

Definitely rebuild the box. The factory recommendations are junk. Huge gains to be made, listen to Lunchbox, he knows a thing or half

[Callan Fraser]

Well considering both of you know what your talking about, I've put the new system on the back burner, and i'll be chasing a 4th type r, thinking of taking the rear seats out and running them in a flat wall/box but still thoughts, thanks heaps for your replies, no doubt you'll be hearing from me