eskii

I'd say 20 cubes for that sorta power, going more's just gonna make it more likely to go POP Have a fair amount of bracing and fibreglass the internals to keep the box nice and ridgid

How much power should i put on a BTL 18 if i plan on running it for fairly decent lengths of time, 15-30min, at high volume. Is 4.5kw too much for that kinda usage... It'll be in a rather tight ported box

it's for a slanted box. 34.25 W 18 H 9.5 Top D 13.75 Bottom Depth

yeah, been playing with it abit. Got about 2.1 cu.ft for volume now, and yes, it's with driver displacement

I'm currently trying to design an enclosure for 3 Bl 10's i've got 1.85cu.ft of volume (total), with displacement. What sort of port area and length would i be looking at. Also, i can increase the volume slightly, as that is with 1inch MDF

What sort of rules apply when constructing a ported enclosure. I know the basics like tuning and port dimensions. But do subs need to be spaced a certain distance appart to be effective...? Things like that! Cheers

Why is it 4-500 more only if you get the btl? Well i'm guessing you don't want to spend that, if you want to get real low, you could get get 4 Qs..or 3 (maybe 4?) BLs if you want to get loud. (Pretty sure you wont have a problem getting loud with either setup though lol) It's that much because of weight and size, with shipping to Australia. So effectively, it's cheaper to buy a more powerful sub than to go for more less powerful ones, hence my choice of BTL's...

I'm installing a RF T4000.1bd in my TJ and want some opinions on what fi subs would suit this the best, in terms of effectively powering the sub/subs. i am looking at 18's as they are hardly used in Australia. But more so for other non-novalty factors! Thanks

I don't think i know anyne that can hear that low actually, besides my friends Flipper and Free Willy. lol Peoples hearing actually ceases at around 20Hz i believe. So a good ratio of am auditable frequency and sound pressure would be heard the furthest away. Then again, i'm not a sound engineer... just a mechanical engineer

I think the kid's just asking what subs are loud. Answer is, how long is a piece of string? I'm sure there's some companies that make very cheap 18's that can take a fair amount of power. But watching them fall apart after only a short time, there goes ya street cred mate (btw, i'm Australian, so i say mate alot!) From what i understand this forum is for people who know exactly what they're dealing with, not people who want a big round (or square....) thing that goes doof-doof!

Yeh, well with only the front seats in it can fit a fairly large enclosure. i think it has about 50odd ft^3 of cargo space overall. ha i think it definately would blow the top off. It's got a hardtop for the winter which makes it a bit more versatile . Be great down at the beach, like a mobile party!!

I've come up with something like this. Pretty much minimises enclosure height, while maintaining 6 cubic feet per sub.

I'm in the process of working out a system for my TJ Jeep. I'd appreciate some advice on different ported-enclosure arrangements to suit it. Leaning towards down firing, but i am concerened about wind interference from port positioning, as if is a soft-top. Also, it will be to suit two Fi BTL 18's or 15's, undecided... Thanks!

I'd love to see a serious system in Antactica. Hmmmm, couple of 18's on a snow-mobile, sounds like a recipe for cracked ice! lol