sub box guide!

[wigansaxo]

hi, has anyone got a twin sub box guide for a 12" sub? or could some tell me how to? just need i deas plz
thanx

[Ashleyp]

you cant just build a box.. needs to be built to size etc.. its a lot more colplicated then it seems. best to spend £50 and get bfuk to do it tbh

[wigansaxo]

i kno it aint that simple thats why im asking for advice, ive made one before but i wanna build a twin one now!

[Ashleyp]

theres a website somewhere.. you type in every spec of your sub, and it tells you what dimensions the box should be.. ill try and find it for you

[Ashleyp]

http://www.reaudio.com/speaker_box/LPort_Box_Calc.html

type in all the figures and it makes the box right for your sub, then simply cut the wood to the sizes the website says, and get building :y:

[wigansaxo]

ahh cheers bud, rep for that!

[Coonper]

Heres a pic of my box which i made recently.

Its 2.5cuft tuned to 30hz.

Do you know the ins and outs of designing them?

http://i125.photobucket.com/albums/p43/Coonper/Photo-0203.jpg

http://i125.photobucket.com/albums/p43/Coonper/Photo-0199-1.jpg

[liam_b]

very nice box mate will have to hear that when your down this end

[Coonper]

very nice box mate will have to hear that when your down this end

Haha! Cheers mate! I wanna hear yours too!:y:

[wigansaxo]

coonper i dont kno! im hopin to learn, would be gratefull for any info!

[Coonper]

coonper i dont kno! im hopin to learn, would be gratefull for any info!

Well the main factor of how any sub will sound is the box!

The box can vary in size according to how you want it to sound. I.e. Smaller sealed boxes give very tight punchy bass, favoured by sound quality enthusiasts. Big ported boxes have higher outputs, but slower reaction time and a loss in quality. Also, sealed boxes are able to play any frequency well, whereas a ported box will peak at a certain frequency, which is chosen by the maker of the box. I.e. My box peaks at 30hz, which is quite low, and hits very low and hard! However, if you wanted pure SPL (sound pressure level) then you would normally tune to around 40-45hz.

You get ports in either round or square form. Square ports are often used over round, as there is less port noise through them (heard as a flapping noise), and the internal baffle can help to give punchiness. Changing the length of the ports is what gives the change in frequency, and the frequency can range from as low as 20hz to about 50hz. 33-34hz is about right for everyday listening.

The box must be made from a good, thick MDF, such as 1". Or if you are really into box making, you can use 2 skins of 3/4" mdf, for ultimate rigidity!

The size of the box ultimately depends on the size of the sub. A 12" can need anthing from 1cuft to 5cuft, then if you were to have 2 of them you would simply double the size of the box. However, yo uneed to take into account the amount of space the driver will tae up when its in the box. Cus a lot of subs have massive magnets, and this dramatically alters the whole box, in terms of cuft and tuning frequency!

I could go on all night, but im tired! Lol

Hope this helps a bit.

[liam_b]

wigansaxo if you tell us what sub you have, what music you listen to, what you want from your install? then we'll tell you what kinda box will be best for you.

do you mind if it takes up your hole boot or do you want alot of boot space left?

[wigansaxo]

i think it helps but ill have to read it a few times before it sinks in! what kinda sized box and port etc would u build for two 12" subs, that play mainley high bass stuff rap etc? in the back of a saxo!

[wigansaxo]

wigansaxo if you tell us what sub you have, what music you listen to, what you want from your install? then we'll tell you what kinda box will be best for you.

do you mind if it takes up your hole boot or do you want alot of boot space left?

its a 12" 400w audiobahn! mainly rap and hiphop type stuff! want tight bass i think, and no i dont mind if it takes up the boot

[Coonper]

Hard to say matey, as it all depends in the subs!

But I'd say anything between 3cuft and 6cuft. As some 12" subs need only a small space, such as 1.5cuft each, but others, like mine, need about 2.5cuft.

But you're definitely better off going ported for that kind of music! Especially if you like it loud!:P

[Ashleyp]

i think it helps but ill have to read it a few times before it sinks in! what kinda sized box and port etc would u build for two 12" subs, that play mainley high bass stuff rap etc? in the back of a saxo!

id go for sealed (personal prefferance)

but imo rap / hiphop bass lines demand precision

and most of the bass often comes from the kick drums. will sound very good sealed imo

[DJDannyB]

wicked guide as per from coonper there :D i take it the size of the port depends on the frequency its tuned too, ie. 30Hz

[Coonper]

Is that 400rms?

[liam_b]

ported ftw if the box is made right it will sound like its in a sealed but be loud and low like a ported il have a look at what size box that sub works best with plus what amp you using?

[wigansaxo]

no it aint 400w i aint sure what it is! i sold my amp, so the amps ill be using will be like 400w 2 channel!

[Coonper]

no it aint 400w i aint sure what it is! i sold my amp, so the amps ill be using will be like 400w 2 channel!

If you give us the model number we can check it out for you mate!:y:

[wigansaxo]

If you give us the model number we can check it out for you mate!:y:

ok thanx ill get it asap

[wigansaxo]

anyone advise any amps? i might get audio bahn but i think they are dear?

[Coonper]

anyone advise any amps? i might get audio bahn but i think they are dear?

Need to know what sub you have got first mate! Need to know power rating, voice coil rating, sensitivity and what box you have got it in:y:

But i wouldnt bother with an audiobahn amp tbh! Much better for much less!:D

[Ashleyp]

Need to know what sub you have got first mate! Need to know power rating, voice coil rating, sensitivity and what box you have got it in:y:

But i wouldnt bother with an audiobahn amp tbh! Much better for much less!:D

jbl jbl jbl jbl jbl

:D

[Coonper]

jbl jbl jbl jbl jbl

:D

nah, Jbl are shit! Kenwood ftw!:y:

OR NOT! LOL

[liam_b]

Kenwood:homme:

[wigansaxo]

i could get a 1400 kemwood for 70! second hand, hows that sound? and price wise to?

[liam_b]

that rms?

[Ashleyp]

nah, Jbl are shit! Kenwood ftw!:y:

OR NOT! LOL

personality reversal ftl! lol

[Ashleyp]

that rms?

and is that for a sub? or amp?

must be 1400wrms if your going to pay £70 for something of kenwood second hand tbh lol

[liam_b]

amp n lol

[wigansaxo]

that rms?


i think so but i will have to check first! i think its sumin like 2000w altogether!

[Ashleyp]

amp n lol

lol.. well as liam and coonper said mate

no point buying any old amp

gotta get one to match your sub

therefore need the specs of your sub!?

[Ashleyp]

i think so but i will have to check first! i think its sumin like 2000w altogether!

need your sub details mate

[wigansaxo]

ill get the spec in a bit, its in mi mams boot cos she said it had to be moved out of the living room lol

[Ashleyp]

ill get the spec in a bit, its in mi mams boot cos she said it had to be moved out of the living room lol

lol.. well untill we know your sub.. no point speculating about an amp lol

[wigansaxo]

im just gutted that mi mams got a bugger install than me lol

[Ashleyp]

im just gutted that mi mams got a bugger install than me lol

lol its wired up in your mums boot?

thought it was just put there lol

my mum would never have a system

your mum must be cool :cool:

[wigansaxo]

lol na it aint wired up, i wired ud some massive house speackers in her old car cos there was no rear speakers! whent all along the boot n looked liike a install lol, i was younger when i did that btw

[wigansaxo]

o but when i get on her insurance next year shes gonns have a tuned up 1.8 mondeo lol,
and i just remembered that she used to have a k and n on it lol

[wigansaxo]

just found the reicpt for my sub! could this be the info that youve been askin for? it says, 1251 audiobahn sub! let me kno!

[Ashleyp]

just found the reicpt for my sub! could this be the info that youve been askin for? it says, 1251 audiobahn sub! let me kno!

did a quick search

couldnt find info on it

need to know the rms rating at impedance to be able to reccomend an amp

maybe coonper will be able to find it online

[wigansaxo]

dont think it says on it so ill av to find out!

[DJDannyB]

have a look on the back of the magnet mate, should have some info surely

[wigansaxo]

this is the closest one i can find! its the same but a 10" insteador a 12"
http://www.ikesound.com/product-product_id/430

[wigansaxo]

ok im unscrewin the sub as we speak!

[wigansaxo]

rigth this must be the code cos its on the back of the sub! AW1251x?

[Ashleyp]

http://www.caraudiocentre.co.uk/product_m-kenwood-kac-8104d_p-23193.htm

something like that may suit your sub

your sub runs 400wrms at 2ohms

this amp will power it sufficiently

allthough im sure coonper will hate it because its kenwood lol

[wigansaxo]

what u think of the sub?

[Ashleyp]

what u think of the sub?

dont know much about audiobahn

so i cant really pass judgment on it tbh with you mate

[wigansaxo]

it sounded reli good when i had it runnin! and it was only on a cheap 400W fusion amp!

[Coonper]

The sub itself is pretty good. Its got 2" voice coils and an rms rating of 400 watts.

Being dual 4 ohms means it can show a final load of either 2 ohms or 8 ohms.

This little beauty would make it move, with a nice bit of headroomn too!:y:

http://cgi.ebay.co.uk/JBL-GTO601-1-MONO-580-WATT-CAR-AMPLIFIER-BRAND-NEW_W0QQitemZ170181965152QQcmdZViewItem?hash=item1 70181965152&_trksid=p3286.m14.l1318

And its much better than kenwood;)

[Ashleyp]

The sub itself is pretty good. Its got 2" voice coils and an rms rating of 400 watts.

Being dual 4 ohms means it can show a final load of either 2 ohms or 8 ohms.

This little beauty would make it move, with a nice bit of headroomn too!:y:

http://cgi.ebay.co.uk/JBL-GTO601-1-MONO-580-WATT-CAR-AMPLIFIER-BRAND-NEW_W0QQitemZ170181965152QQcmdZViewItem?hash=item1 70181965152&_trksid=p3286.m14.l1318

And its much better than kenwood;)

tbh i just couldnt be botherd to search ebay.. lol

kenwood ftw!

[Coonper]

tbh i just couldnt be botherd to search ebay.. lol

kenwood ftw!

Haha! It gets tiring doesnt it...

Kens wood fail to perform, and reach peak very quickly then blow up!:homme:

[Ashleyp]

Haha! It gets tiring doesnt it...

Kens wood fail to perform, and reach peak very quickly then blow up!:homme:

yep.. mine seems to enjoy cutting out at free will.. hasnt done it for a while though.. maybe hes just jealous about being replaced by my gto1201.1 lol

[Coonper]

yep.. mine seems to enjoy cutting out at free will.. hasnt done it for a while though.. maybe hes just jealous about being replaced by my gto1201.1 lol

To be fair, who would'nt be jealous of 1200rms, 4 gauge inputs, 2 ohm stability and great looks!:P

[Ashleyp]

To be fair, who would'nt be jealous of 1200rms, 4 gauge inputs, 2 ohm stability and great looks!:P

amp-perve ftl :homme:

[Coonper]

amp-perve ftl :homme:

Absoloutley! I have amp calenders/posters all over my room!

I carry a photo of a 2 channel jbl with me everywhere i go, just in case i get the urge!

Then the photo of the monoblock is for special occassions! Candle lit dinners etc

[Ashleyp]

Absoloutley! I have amp calenders/posters all over my room!

I carry a photo of a 2 channel jbl with me everywhere i go, just in case i get the urge!

Then the photo of the monoblock is for special occassions! Candle lit dinners etc

haha.. mine doesnt get any special treatment.. lives in a box at the min :(

would rep for being an amp-perve but apparently i need to "spread the love" allthough i dont remember giving you rep for like a month

i bet you enjoy perving over kens wood? :P *images of barlow having a "play" come rushing back into memory*

[Coonper]

haha.. mine doesnt get any special treatment.. lives in a box at the min :(

would rep for being an amp-perve but apparently i need to "spread the love" allthough i dont remember giving you rep for like a month

i bet you enjoy perving over kens wood? :P *images of barlow having a "play" come rushing back into memory*

I can see him now! Ken sat in his arm chair with his glasses on. Legs spread, tissue at the ready! Then in walks blanch!:fcuk: she loves it! Haha!

[Ashleyp]

I can see him now! Ken sat in his arm chair with his glasses on. Legs spread, tissue at the ready! Then in walks blanch!:fcuk: she loves it! Haha!

ewww blanch :barf:

[Coonper]

ewww blanch :sick:

Blanch and dierdy lessing it up ftw!

[Ashleyp]

this thread is now making me scared

need my mummy :homme:

[liam_b]

its gone just a lil off topic lol

[Ashleyp]

its gone just a lil off topic lol

lol yeah.. the same convo ended around 5 threads so far lol

kenswood ftl

[wigansaxo]

haha, anyone fancy designin a twin box for me plz if they are doin nothing ovcourse! i want one that goes across the hole boot if possible!
thanx

[Ashleyp]

haha, anyone fancy designin a twin box for me plz if they are doin nothing ovcourse! i want one that goes across the hole boot if possible!
thanx

bfuk mate

coonper has the contact details i think

[Coonper]

bfuk mate

coonper has the contact details i think

Yer, they are very good!

Stick BFUK in google and its about the 4th or 5th result!:y:

You have to ring them though, as they never reply to emails...