Advice on buying the sub. which series should i buy??

[luckyishere123 0]

Hi,

I am from india and i am keen to order the FI subs for my car after seeing so many satisfied customers and so many videos of good things about them. I want to install them in Chevrolet optra (4 door) aka Lacetti in USA....My current setup has

HU--Alpine 9887

Compos :-- rainbow SLC 265.65 NG

Amp for Compos : -Audison Srx 4

Sub :- Alpine Type-R 1222d (12") 2no.s in a sealed box 1.35 cu. feet for each

Mono amp :- Alpine MRD M1000

Power acoustik 3.0 F capacitor

Audison and Directed Audio RCA, power cables, Audison ground and distribution block

I have touched 140 DB on the windscreen easily in my sedan with this setup now its time to upgrade wherein i have multiple choices....

I can stay with the 1000W rMS power of my amp and get a sub according to the ratings of 1000W RMS or i can but 1 more amp with similar specifications or may be similar one to push them to get 2000W RMS. I wanna touch atleast 145 DB with teh sealed enclosure coz somehow i dont like the boomy sound of ported enclosure and i want the sub to go really low....SO its the low bass which i prefer.....I can go with any size be it 2x12" , or 1x15", 2x15" or even 1x18" provided i have enough space for the enclosure to get inside my boot......So i m now really confused in between Q ,BL and BTL series sub....as i am in india and i cannot audition them by any means possible...so you guys will be only medium for me to get that detail so that i can order them accordingly....Price is not an issue as they are great VFM......but i want a setup which can be used on daily basis as well becomes stealth and push out great SPL when required...

Please suggest guys....that would be of great help

[kjones 2]

low? as in sub 30s and lower?

if so the ssd or q would be fine.

[luckyishere123 0]

yes in a region of 27-35 hz....I am basically confused in between Q and BL as they both have the rated power as 1000W RMS...plz advice

[kjones 2]

the bl leans toward the spl more than the q, but the q will hit harder down low from what i have heard. 1000watts stock, put on the bp power on the q and it can take like 1500.

[Duran 387]

The BL and the BTL cannot be run in a sealed enclosure. The Q is what your looking for.

[luckyishere123 0]

I can go for the ported enclosure as well but the concern is which will play cleaner as well as go louder when pushed?? also which ones recommended 1x15" or 2x12" ? And if by any chance how to lower down the shipping costs and avoid customs too when shipped to india? Any idea guys?? and thanks for replying and helping...

[RobClay 20]

Sounds like the Q is for you

But sealed enclosures aren't for pushing out good spl scores.

You can make a ported enclosure sound great and get low aswell.

[kjones 2]

With the right space i favor 2x12s. more cone, handles heat better with 2 coils.

[jesterjames 0]

all about the box its in really, post up some deminsions of what size box you can fit and ill make winISD spit out some #'s

also was that 140 on a term lab meter?

if you want to hit 145 your going to need more power and a vented box. If your serious about hitting that # and being tuned for SQ then you might want to look at the BTL's and some serious power. 6-7kw

[luckyishere123 0]

IMHO i dont really think that in order to reach 145 Db i need 6-7KW of power. I hit 140 in a sealed box and that too with term pro meter on windshield with 1000W rms of power.....When i'll switch over to a ported enclosure i will roughly get a 3db gain...I have a friend of mine using 2 Ground Zero Hydrogens 15" giving them 2000W RMs in total in a hatch back and easily touching that number......My only need is i want that number in a Sedan

[jesterjames 0]

you hit 140 at what freq?

If you want to hit 145 in the 30-40HZ range your going to need to go ported, otherwise your going to need some serious power...

hes a pic of what the output from the sub box is going to look like from winISD

Yellow line=Sealed Box

White Line=Ported 6cubes tuned too 32HZ

http://s257.photobucket.com/albums/hh201/h...tforlucky-1.png

Vented Box peaks at 36HZ, box is tuned to 32HZ 6Cubes 3000wrms(1500WRMS per sub)

Sealed Box Peaks at 74HZ, box is 2.8 cubes, 3000wrms(1500WRMS per Sub)

Subs are 2 Fi Q 12's D2's

Basicly your going to get ~10db more output at 30-40hz in a vented box than a sealed box.

Edited March 25, 2009 by jesterjames