Hi there, i need any kind of help about the size and dimensions of the SPL Box for the 2x Pioneer307d2 subs. Thanks a lot

what vehicle?

and whats the max dimensions the enclosure can be?

Its a Skoda Fabia.. its freq is 53-54 hz

I'm not going to bother trying to help in threads like these anymore.

Why? My english is not so good maybe i didnt understand what u asked me

physically, what is the largest the box can be, and still fit in the car?

i get it... now its 900x376x459,8mm (external) and it almost fit the whole trunk

Anything ?

no, I'm too lazy.

just make the box 850mm wide (internally) 300mm X 300mm, all internal dimensions.

do a single 150mm round port, in the middle of the box, about 24cm long.

make the port so its as far out of the box as possible. But with atleast 15cm between the port, and the back of the car.

try woofers firing up, port firing rear.

now, wait for someone else to come up with a different design.

haha

Thats is box with 47liters voulme... maybe its for 1 woofer, i asked for 2 And of course bassbox said the driver may not fit in the box heheheh

umm, I work it out to be 76 litres.

That's looks OK. 45Hz is a safe bet.

A little bigger might be better too......

Phil

I'd go a bigger port than 150mm for SPL and flare the crappers out of it. I think that car would prefer subs up, ports up but don't use external ports.

Maybe try with a 200mm port witch i already have, so till now we get the box with 76 litres but we didnt use the 200mm port? Amm i right? Thank u guys

the problem with using a larger port is that it has to be longer to tune the same, you could make the box bigger, but I wanted it so you could move the box back/forward a reasonable amount to see where it peaked.

make the box 85cm wide, 33 X 33cm, all internal dimensions.

it may be able to be bigger, but you didn't tell me which dimension was the height.

anyway, use the 200mm port, and make it 37cm long, half in the box, half out, whatever will fit as long as there is ~200mm clearance at each end of the port.