Sub Box Enclosure

[Deutscher]

Hi guys,

Just received my items from ebay

I've got the Hifonic Olympus 2412 (2400rms, 12") sub and need a box to put it in. Reading the manual, it says it is not recommended for closed box designs but also has different types of boxes.

Standard Tight Base - 2/56.63 (cubic feet/liters)
Optimal Sound Quality-Flat Response - 2.5/70.79 (cubic feet/liters)
SPL Very Boomie-Loud - 2.75/77.87 (cubic feet/liters)

Which would I go for?

[VryNeat]

i dont know what u would want mate but what do u want from ur sub maximum base i nice bit of doof or what u gotta say that so the guys can help u out a bit more

[Tasmaniak]

Have you considered a boc that extends your bass responses? For everyday purposes I rarely recommend an SPL enclosure. You will hate it except for when you that particular note

[TheyDontWantMusic]

umm, flat response would kinda be the logical choice.

do you actually have the t/s specs for the sub?

[Tasmaniak]

^^^not always. The woofer in question here is a highpowered monster designed for SPL set-ups. Considering it's not going to be used in an SPL set-up more of a daily driver it's never going to have SQ abilities.

[TheyDontWantMusic]

^^^not always. The woofer in question here is a highpowered monster designed for SPL set-ups. Considering it's not going to be used in an SPL set-up more of a daily driver it's never going to have SQ abilities.

yes, but if you're using the sub to play MUSIC, you're going to want a box that gives the flattest possible frequency response so it can play music as accuratly as possible.

edit: I never said anything whatsoever about sound quality, I said flat frequency response.

[Tasmaniak]

Flat Response = Sound Quality.

[Deutscher]

I'm not too sure which I want. It will be a every day driver. I know you guys don't know what I want, I was wondering what you guys would do. A do like volume, but I don't want to lose quality.

How much difference (in db) would a SPL box and flat response be? is it going to be noticable?

[Phreddy]

I voted for MY preference - that's all!
(flat response)

Seriously Mate, it depends on what YOU want - but as Ray pointed out, when set up for SPL it only works at peak efficiency at a very narrow feequency band - for general listening it's dreadful.

Also, look at the size of the SPL box! by the time you allow for back-volume, port volume, and bracing, you're well over 100 litres! It'll weigh a ton, and take up half your boot! Although, even the box volume for the flat response is large - it would seem this driver has relatively tight mechanical suspension, not relying on the compression within the enclosure for cone support...

Hmmm, I'm starting to ramble....

Cheerz, later!

[Deutscher]

I voted for MY preference - that's all!
(flat response)

Seriously Mate, it depends on what YOU want - but as Ray pointed out, when set up for SPL it only works at peak efficiency at a very narrow feequency band - for general listening it's dreadful.

Also, look at the size of the SPL box! by the time you allow for back-volume, port volume, and bracing, you're well over 100 litres! It'll weigh a ton, and take up half your boot! Although, even the box volume for the flat response is large - it would seem this driver has relatively tight mechanical suspension, not relying on the compression within the enclosure for cone support...

Hmmm, I'm starting to ramble....

Cheerz, later!

I'm thinking of going with flat response or tight bass. From what I hear, SPL is not the way to go. About the boot space.... I barely have any left haha, I've got a gas tank in the boot, don't use my boot tho so its only for my amps and sub. Weighing a tonne.... it already does, for some reason this sub is hell heavy lol, not like my Type R I previously had.

[Phreddy]

Heh - sounds like an industrial duty unit!

Good luck with the project.

[Deutscher]

Heh - sounds like an industrial duty unit!

Good luck with the project.

The Kicker 0gauge wiring kit weighs 6Kg
The Hifonic Brutus amp weighs 7Kg
The Hifonic Olympus sub weighs 17.5Kg (without box)

Too me that is heaps heavy!

[holdenboy]

As far as difference in dbs go i would imagine something like 5-8db...depending on how well the box is tuned if its a SPL box.

Which would make a difference to how loud it goes. As stated above, it'll only sound good with a handful of songs.

Id say if your not after a system that you wanna compete (at SPL comps) with and are concerned about box volume / size, go with the sealed version. It wont be as loud as a ported box but will sound good with all music and be relatively small / light.

A sealed box, provided its the correct volume, will also give you a flat frequency response and therefore decent sound quality.

[TheyDontWantMusic]

Flat Response = Sound Quality.

lol, umm, no it doesn't.

flat response = flat response

sound quality = sound quality.

yes, a sound quality system should have a flat response, but that doesn't mean a system with a flat response has sound quality.

lol

[garfa]

i might be behind the times, however don't you think about what sort of frequency response you want before you buy the sub.....
Really I dont see much option here considering what I have read regarding the gear.......
Deutscher: really you should have thought about this a LONG time ago....

[Deutscher]

Stupid sub box!
I have to get a custom made box, because they biggest most people sell for a single 12" is 44L, a weebit small. To get a custom box made it will cost me ~$250. I think I'm going to go with the Optimal Sound Quality - Flat Response box.

[Phreddy]

Deutscher - shoot me a PM. I'm on the other side of the country, but I reckon I can help you out with a custom box for less than that - even taking freight into account.

If you're interested, let me know.

Cheerz!

[Tasmaniak]

Aiming a box to have the flattest response possible is unintentionally going to give you a higher sound quality as there will be less differentiation in dB inbetween the frequencies. Thusforth giving you a higher level of soundquality. Build a box for soundquality and watch how flat the frequency response is....

[holdenboy]

^^^^EXACTLY......the best place to start a SQ system is with a flat frequency response.

[Deutscher]

^^^^EXACTLY......the best place to start a SQ system is with a flat frequency response.

Well thats kind of helpful. I didn't really think there was much difference between subs in terms of sound quality.... xcept cheapo stuff. (Guess that shows my knowledge of this kind of stuff . ) I kinda just got this sub cause it had 2400rms rating and it was featured in a magazine (can't remember which one), and another thing... I have never seen one of these subs in Perth (by that I mean shops selling them), so it's different than the rest of the subs out there. After checking some reviews and stuff, its capable of running that kind of power compared to other manufactures that say they can but real life they can't. So yer, didn't really think about sound quality etc, like said, didn't know if would be noticeable ... (I've only ran a Type R 12" before, and that was already in box, so I didn't know there were different boxes to do different things).

[holdenboy]

If thats the sub you wanted to get because of the above reasons then good on you for buying it, and im sure if the only other sub youve had is a Type R (by the way how much power were you giving it?) than im sure you will be very pleased with the results.
My vote is to go for a sealed box, a smaller volume version will sacrifice that flat response weve talked about.

The type / size of the box plays a GREAT part in the type / volume of bass you will experience, the same can be said for box placement too. Ported in general will give you a higher output (volume), while still being a relatively flat response. The downside to a ported box is the size mainly. Whereas a sealed box (again in general) will give you a tighter sound with better SQ and is usually much smaller.

By the way i reckon a 2cu.ft. sealed enclosure is pretty big for sealed, and i would imagine a ~1.5cu.ft. box would some really similar.

[Tasmaniak]

Although I would normally agree with you here on that holdenboy I've heard a few of these subs and they do not provide much of anything in a sealed enclosure due to the lack of mechanical suspension. it really needs a vented enclosure...it has too much trouble pressurising the enclosure behind it it so its a better perform when it does not have to pressurise a box.

[Deutscher]

All I know is that in the manual it clearly states "NOT" to use a sealed box. So I'm gonna go with a ported.

[Tasmaniak]

it's true...the EBP for this woofer definetly leans towards vented or bandpass

[Deutscher]

Ok guys, I'm going a cheaper route (temporary), my mate is going to make me a box, he's a cabinet maker so it'll do for the time being.

I was wondering if there was a good program/site/calculator to work out the size of the box I need. I have a limited space in my boot in Width wise. I will have the sub facing upwards in the boot, it will just be a rectangular box.