SUBs to fit ;)

[makeitfit]

Right o, I'm on a new project and will need some help and advice Sweety
I have 2 10" subs I nicked out of an old Mutant boom box my son carelessly left in the kitchen :lol
I realise I need to make some sort of enclosure. At the moment it's relatively easy as all the panels are stripped in the Black Pearl.
Here's my rough idea , it's about as big as I can get .

I made some cardboard templates for the enclosure sides.

Then cut some fibreboard I had in the garage and bonded that into place with Tigerseal

Nice snug fit . I'll fibreglass that in tomorrow.
Bigger bit next to do and repeat the process.

I'll be blanking off all the other body holes too but will fit a Port somewhere.
Does the position of the port matter? Also what sort of size should it be ?
Do I need to fill the space behind the speaker with fluffy stuff or leave it empty ? :nenau

 

[Fez_uk]

Leave as is, stick them in the trol!!!

 

[makeitfit]

Nah, I've got big plans for the Trol :sly
This is a kind of practice run

 

[Sweety]

Are the measurements in mm ? Personally I use 18mm MDF for builds but if you can get a good coating of fibreglass on all of the panels it should help loads as you might be shocked how much the sides of an enclosure can flex when a sub is working hard but I would advise the front the sub is mounted to is at least 18mm thick. Ports often work best fitted on the same panel the sub is mounted on & never on the rear panel as for size i'd prob go with a 2" wide port but the length of the port will depend on the inside volume of the enclosure (eg the 40L enclosure i'm going to build will have a 3" wide port which will be about 11" long to tune the enclosure down to 34Hz but if I used a 2" port at 4" long it would tune the enclosure to about 38Hz) Ports can easily be made from PVC pipe & if you have enough pipe you could make up a couple of ports different lengths to see which tuning point you like the best:thumb2 You can add fibre fill (fluffy stuff out of cheap pillows) & almost stuff the enclosure with it but don't block the port opening, it will partly fool the sub into thinking it's playing in a larger enclosure which should make is a bit boomier

 

[makeitfit]

Yep sizes in mm, what else is there ? :lol
I've got some mdf kicking about. I'll use that for the bigger bits I haven't glued in yet. I mainly went fibreborad as the shape's so fiddly it gave me a bit of room for error. Fibreglass is 2nd nature to me, it won't move if I don't want it to :sly
As for port length, that will be an issue as there is very little depth to play with. So could the port be curved? Like maybe, 2 x 45 degree elbows before the opening ?

 

[Sweety]

Yep sizes in mm, what else is there ? :lol
I've got some mdf kicking about. I'll use that for the bigger bits I haven't glued in yet. I mainly went fibreborad as the shape's so fiddly it gave me a bit of room for error. Fibreglass is 2nd nature to me, it won't move if I don't want it to :sly
As for port length, that will be an issue as there is very little depth to play with. So could the port be curved? Like maybe, 2 x 45 degree elbows before the opening ?

Yes you can put in a 45 or 90 degree bend if you want/need to infact all of the port doesn't need to be inside the box if you didn't want it to be. I'll try & work out the volume of your box:doh oh measurements in inches work great for sub boxes:lol

 

[makeitfit]

I did a very rough calculation and got 0.03 m3 or in old money 1.06 cubic feet :nenau

 

[Sweety]

Just tried to work out the volume (i'm not great with maths) but your planed enclosures are looking to have a volume of about 26L each which I think will be a bit to small to go the ported route sadly so i'd go for sealed enclosures instead which should give you a nice tight bass sound

 

[makeitfit]

Pretty close to my figures. At best I could squeeze 30 L . Too many other bits in the way .
Unless an annexed box is allowed ?

 

[Sweety]

Enclosures can be almost any shape you wish, TBH i'm running a single 10" in my boot with the parcel shelf folded down over the boot & it still sounds nice but if it was fitted behind the front seats where yours are going it would be a lot loader to the ear

 

[exosteve]

stop chatting and post PICS

 

[makeitfit]

Ah but needed to know more before sticking in a cock up. I'll see what I can do tonight

 

[makeitfit]

stop chatting and post PICS

Sorry boyo no time for the sub project today. Just got another baffle in is all

A right blinking pain too. As soon as you get the right shape you can't necessarily get it in the ruddy hole
Ongoing

 

[makeitfit]

Not had much time the last few days as we found some more floor was missing :doh
Anyway I got some fibreglass done tonight at least

I've also made the front panel and hope to get that on tomorrow

 

[exosteve]

I seriously hope you did paper template copies mate.for the mdf shapes. or else I may not talk to you in wales

ive got no boot trims at all and I will do this I already got materials:clap

 

[exosteve]

this is exelent

 

[makeitfit]

I seriously hope you did paper template copies mate.for the mdf shapes. or else I may not talk to you in wales

ive got no boot trims at all and I will do this I already got materials:clap

I do have the templates but you'll have to tweak them as my arches are higher than yours . The bigger one you can see in the pic goes down to my side exit exhaust tunnel too, so another tweak there :lol
I'll keep the bits for you to have a head start at least

Ah, erm, just thought, yours is LWB :nenau

 

[Sweety]

If your going to fit a sub Steve you'll need to know what volume enclosure it needs as no 2 subs use the same volume really. I've got mine so it's easily removable for when we go camping:thumb2 Still need to get my install done but now the Son's car is finished i'll have a bit more time to do mine:thumb2 Talking of the Son he was at a cruise at the weekend & the photographer of the forum took a few picks of his car & the sound system I fitted

 

[exosteve]

good points.:naughty

this is within my ability anyway just likin this thread.
after ive finished me girls vivarium and me daughters mate vivarium and dome my intercooler mod and breather pipes and service I will do this too

are we getting gooseberries this year pete:nenau I bring you some sausage cheese and oatckes

 

[makeitfit]

I will keep a very good eye on me goosgogs mate