best SQ sub for application

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Xclusivex

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Joined: February 14, 2004

Posted: December 22, 2004 at 11:34 PM / IP Logged

you said you've heard the IDQ's, as far as the SQ goes i listen to alot of rap music (not strictly, but alot) can the ID's hit the low deep bass that alot of songs have? also what kind of setup did you listen to, im just trying to get an idea on what to expect

kfr01

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Posted: December 22, 2004 at 11:48 PM / IP Logged

This is where understanding that program would REALLY help you. You'd be able to see and compare the graphs of the low bass extension for these subs.

The IDQ is not particularly deep. I run a 10" it in a .55ft^3 box with 200w. Since you have that much power, I'd probably go with the Brahmas or the Eclipse. 1200w would be complete overkill with the IDQs.

New Project: 2003 Pathfinder

Steven Kephart

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Posted: December 22, 2004 at 11:59 PM / IP Logged

I just wanted to point out that the Brahma does have an SQ advantage due to it's XBL^2 motor, however they retail for over $300. So it sounds like it is outside of your budget. Our offering for a sub under $300 with the SQ of the Brahma would be the Koda 10. It just won't get as loud as the Brahma. I also wanted to mention that the Brahma is a very tiny box driver. I run mine in a .36 cubic foot enclosure, and it was tested in Mobile Entertainment to have a flat response all the way down to 10 Hz in a .2 cubic foot enclosure in the reviewers vehicle.

Good luck on your choice. All 3 subs are great subs and I doubt you will be disappointed either way you go.

Steven Kephart

Adire Audio

jeffchilcott

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Posted: December 23, 2004 at 12:03 AM / IP Logged

I will chime in. I am running 2 eclipse aluminum subs. running approx 400rms each. Running them in a vented enclousre, I am currently in the low 140 db area on the term lab mic. I will say this much. They want more power then the 400 I am giving them. I really want to build a dual mode box. that I can open and close the vents. I will highly recommend them!

But on the other hand, I did run one single w6v2 for along time..I ran it with roughly 1600RMS via (2) 800a2 fosgate amps I had modded the amp so they were able to be daisy chained, not a good idea with these amps. Any ways. In a ported box at 1.63cu ft for one sub. vented at 32hz..I was able to get 148db on the audiocontrol Mic that will yeild about low 140's on the Term Lab mic.

So..........I would say per experience with those 2 drivers That with that much power, I would probably go back to the 1 JL...unless I could come up with the amps I really want to put 1600rms to each eclispe I have now.

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kfr01

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Posted: December 23, 2004 at 12:15 AM / IP Logged

Steven is right. Especially since you're probably pushing the driver near xmax, the Brahma's XBL motor would probably be great for you to improve SQ.

New Project: 2003 Pathfinder

Xclusivex

Member - Posts: 32

Joined: February 14, 2004

Posted: December 23, 2004 at 7:39 AM / IP Logged

Yea im aware that the brahma is a bit more expensive, but (this is the exception for the brahma) i was planning on running a dual sub application however the brahma has the reputation of being quite loud in a single sub setup so if i end up paying lets say.. $350 or 400 for 1 brahma 12 but still achieve the same output as say 2 IDq's i will in a sense be actually spending right around the same amount of money. steve what size sub are you running in the .36 box? also could you maybe give a comparasion to what the power output of the 1 sub would be equal two? and would 750w RMS be enough to power 1 brahma 12 to the fullest? thanks

kfr01

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Posted: December 23, 2004 at 10:43 AM / IP Logged

Seriously learn the WinISD package. You could answer all these questions quickly yourself.

It just took me 2 seconds to throw 1 Brahma 12 in a .5ft^3 box up on WinISD and compare it to 2 IDQ 12s w/ 1.4ft^3 box. The Qtc of both applications is around .94-.93 to be fair.

Within the same amount of power, within the IDQ's power handling / excursion range, the 2 IDQs will ALWAYS be louder than the single Brahma by about 3-6db. ALWAYS. This is because you have double the cone area AND a more efficient subwoofer.

HOWEVER, 750 is starting to push the IDQ's pretty hard and pretty close to the xmax. The Brahma still has PLENTY of xmax and power handling room to go. The Brahma will be cleaner when pushed because of the XBL technology. It is a game of trade offs. The single Brahma CAN get JUST AS LOUD as the 2 IDQs. Their maximum SPL is VERY SIMILAR. However, you have a nice tiny! box for the Brahma and it will stay cleaner.

I'd personally go with the Brahma if you run it like a madman w/ the watts and want it to stay clean. :-)

It would make no sense to me to go with the IDQ's in this application. Buy the Brahma.

You really should learn that program. You'd be able to see all this on screen in seconds.

New Project: 2003 Pathfinder

Xclusivex

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Joined: February 14, 2004

Posted: December 23, 2004 at 2:47 PM / IP Logged

So from what im understanding in these posts is a small enclosure will yeild more SQ but a larger enclosure would be better for more SPL? what size would be considered something inbetween? also with the amp i have im running the 2 infinitys at 1200w RMS at 2ohm.. at 4ohm the amp is 600w RMS (a considerable amount less power), but the amp has a fairly high distortion level. Thats why im not set on a certain amount of power for my setup YET. I would like to decide on the sub then find an appropriate amp to push it for my needs. just letting you know so you dont base your recommendations on the 1200w. but i think i will take the advice and get the brahma since I know they have alot of capabilities I guess if after the install i feel like i need more power i could always make a new enclosure and/or find a more powerful amp

uthinkuknoaudio

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Posted: December 23, 2004 at 6:04 PM / IP Logged

(honk honk) I'd either go with a Brahma or the IDMAX by Image Dynamics. They both rock and will not dissapoint. Its all about money down to this point, so choose which one. Both sound great in small boxes. I own 2 brahmas and i love them, and i've heard IDQ's and i think they are great too. Let us know what you decide...

"I don't play games. I play Nakamichi and that for real yo" - Probably some japanese kid said this in the early 80's trying to sell stereo out of his trunk lol.

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kfr01

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Posted: December 24, 2004 at 12:36 PM / IP Logged

Xclusivex wrote:

So from what im understanding in these posts is a small enclosure will yeild more SQ but a larger enclosure would be better for more SPL? what size would be considered something inbetween?

Totally wrong. I'm really not sure how you understood this from the above posts. Both the IDQ and the Brahma were designed to work well in small boxes. Maximum SQ is usually obtained by running a LARGER box (within reason) to obtain a lower Qtc. Again. Learn that program. You'd be able to SEE what different sized boxes DO to the SPL and overall frequency response curve. The moral of this story is that box size will totally depend on the characteristics of the subwoofer. What will work well for one sub may sound like ass with another. You NEED to understand those enclosure design programs OR just let your installer do everything for you.

So we don't have any other misunderstandings, what you should learn from the above posts is this:

1) The Brahma and the IDQ both work well in small boxes

2) The Brahma handles much more power than the IDQ

3) The IDQ is more efficient than the Brahma

4) The Brahma will stay cleaner closer to xmax because of the XBL technology

5) There are never free lunches. Because the Brahma is less efficient, you'd need to push the Brahma with 1500+ watts to acheive the same SPL as 2 IDQs. You'll REALLY need to push that sub to its limits to match the output of two IDQs.

Xclusivex wrote:

also with the amp i have im running the 2 infinitys at 1200w RMS at 2ohm.. at 4ohm the amp is 600w RMS (a considerable amount less power)

This is also fairly wrong. By itself 600w is a lot of power. However, moving from 600w to 1200w doesn't do you much good. The maximum SPL difference between 1200w and 600w is 3db. 3db is small. Why don't more people understand this? In the process of moving down to 2ohms you increase distortion, perhaps a lot depending on whether your amp was a budget buy, which I suspect it was. So, congratulations, you squeezed a measly 3db more out of your system in exchange for more distortion.

Xclusivex wrote:

but the amp has a fairly high distortion level. Thats why im not set on a certain amount of power for my setup YET. I would like to decide on the sub then find an appropriate amp to push it for my needs. just letting you know so you dont base your recommendations on the 1200w. but i think i will take the advice and get the brahma since I know they have alot of capabilities I guess if after the install i feel like i need more power i could always make a new enclosure and/or find a more powerful amp)

I think this is wrong too. Don't just buy the sub. Decide whether you can afford the power to drive a Brahma with a proper amplifier so you won't be disappointed. And don't even think about using some stock box for the Brahma. You should design and build a box perfect for the Brahma from day 1.

Anyway. Let me know if you have any questions.

New Project: 2003 Pathfinder

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