RL-i 10 Box Design

[Robertw813 0]

Everything I have heard about these subs so far has been positive. I want to give them a go in my new setup, but I might have a problem. Tell me what you think.

I have a regular cab 1999 F-150 so I am limited on space. With the area I have to work with I can build a box that has an internal volume of just under .83 ft^3. Im not sure how much of that is taken up by the sub itself.

Do I need more airspace or is this enough? I prefer SQ to SPL so I was planning on building a sealed enclosure, but am open to a vented enclosure if the sound would be better overall.

I will most likely be using a Mono Block Memphis amp pushing around 500W @ 2ohms if that helps any.

Thanks in advance.

-Rob

[mrray13 30]

well, two issues...

first, unless mike still has some single 4s available, the amp ur using (i'm thing the mclass 500d?) isn't going to work. u can however use either the m class 1000d(which i'd recommend) or the pr series 500d or 1000d..all three are stable to one ohm, which is what u'll need with a pair of dual 4 subs. or maybe a regulated amp (like the jl 500/1 or 1000/1, there are others, like pg) that will give u the power at 4 ohm, which ur vehicle will love ya for!

second, .83ft^3, is that net before sub displacement, and per sub? if so, that'll give ya around .75ft^3 net per sub sealed and that's sweet! if that's not enough,u can do some loose polyfill and that'll help "gain" some internal volume. also, a low tuned ported box would be awesome. of course to me, that's about 36-38hz, and would require about 1ft^3 per sub after port and sub displacment.

now for ur truck, if u don't mind losing a lil legroom, i know 2.5ft^3 ported can be attained, but u have to build up over the trim piece. so ported can be done. but it's not an easy box... f150 box i just completed thread

but if ur after more sq then spl...do the sealed box and 1000wrms for the pair....

wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

[Robertw813 0]

Thanks for the reply. It was pretty much exactly what I was looking for. Couple things to add/ask.

1) That .83ft^3 is indeed the net box volume. I figured with a sub in there it would work out close to .75ft^3, but wasn't for sure.

2) I am planning on just using a single RL-i 10 for the time being. I plan on using the MCD-500 amp. I'm was pretty sure that I can wire a single 4ohm DVC sub up for 2ohms. If not, I guess now is the time to know

3) Forgot to mention that I listen to pretty much EVERYTHING music wise. From Stevie Ray Vaughn to Snoop Dogg. Do you think a sealed box would work better, or a low tuned ported one?

Part of my box building trouble is that I have a split bench seat which has a folding center console. It does partially limit me on how the box can be constructed, without losing its functionality.

-Rob

[mrray13 30]

yep, if you're only going to run one rl-i, teh mc500d will be perfect! (dunno where i got you were going to run a pair of them?? )

that box (.75ft^3 net sealed) should work wonderfully in your situation. however, a ported one will give more output with a slight loss of sq. if you can squeeze jsut a bit more airspace, i'd suggest about 1ft^3 tuned mid to high 30's (35-38hz) with roughly 15-20in^2 of port (if u go slot) or 4" round. you can always run the port almost entirely outside the enclosure if it will help ya get the space ya need.

it sounds like you've got a good plan going and don't forget...we're suckas for pics!!!

wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

[60ndown 0]

sealed , sealed, sealed,sealed,sealed,........

[kuijo 0]

I've got a 98 reg cab f150 and fit 2.5 cubes tuned to 34hz behind my seats. I wouldn't mind giving you the plans if you want to take a look. I've got 2 rl-i 10"s in it running off my 1200w Viper amp. Just send me a pm.

[Robertw813 0]

Thanks Kuijo. PM sent.

What is the general consensus on fiberglass enclosures? Don't think I have ever heard a sub in one. Anyone out there have experience with these things? I think it would be fun to build and great for saving some space as well as just cool looking.

-Rob

[Supa_c 1]

Nothing wrong with FG enclosures.

They offer some advantages over MDF.

Main one beight weight

[ANeonRider 3]

Others are that you are able to use all of your available space, and can be very creative.