Idea for (2) 18" RE MT's...

[SHiZNiLTi 10+ year member]

I have (2) 18" RE MT's on the way and have allready decided that I'm not going to have any more rear seats in my 2dr blazer //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

I want to create a very effecient box since I'm only going to have 1800rms per sub for right now.

Should I completly remove my rear seats and build a wall or should I just fold the seats down and do a CRX?

Size & port area?

Click to read more...

 

[billabongcr 5,000+ posts]

completely remove seats.

i wouldnt go wall..but instead a big ass box laying down with the subs and port firing up.

6-8ft^3 (per driver) to 34hz?

edit: 5-7..not 6-8.

 

[TheFiverMan 10+ year member]

remove them..and sell ur btl to me..

 

[TheFiverMan 10+ year member]

do the wall...but get more power..try 13cf tuned to 35hz?

 

[SHiZNiLTi 10+ year member]

Any other ideas of waht a couple of 18" MTs would perform best in.

I'd like some more input on

A. The amount of cuft to build the enclosure to.

B. Tuning

C. How much port area to use

D. How to make the box so the subs are more effecient

This is a daily driver. and keep in mind for right now I only have 1800rms to give each sub.

Thanks!

 

[regal8r 5,000+ posts]

Any other ideas of waht a couple of 18" MTs would perform best in.
I'd like some more input on

A. The amount of cuft to build the enclosure to.

B. Tuning

C. How much port area to use

D. How to make the box so the subs are more effecient

This is a daily driver. and keep in mind for right now I only have 1800rms to give each sub.

Thanks!

a. 20cf

b. 28hz

c. 300sqin

d. by using such a big ass box (10cf per) you are lowering the power handling, which should make the subs more efficient with alot less power than they could take otherwise. im sure someone will correct me if im wrong...

 

[jblanford 10+ year member]

shiznilti im in the same boat as you...

I have 2 18 mt's on the way and only going to be throwing 2k on each

I have been talking to Belunt about a box for my grand cherokee and he said 5-7 cuft per woofer and 4 6" areo's in the low to mid 30"s

 

[lrgnation 10+ year member]

15cu ft. 28-30hz. and do a slot/square port. Roll all the inside corners of the box with fiberglass/resin. all thread for support.

 

[SplChoice- 10+ year member]

28hz ftw //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif ull be happy with those drivers.

 

[Corey69 10+ year member]

Why didn't you just add another fully loaded BTL? Plus why would you take the rear seats out when you can fold them down flat and put a box on top of them.

 

[SHiZNiLTi 10+ year member]

Why didn't you just add another fully loaded BTL? Plus why would you take the rear seats out when you can fold them down flat and put a box on top of them.

The BTL I was running was a 2 ohm DVC, The MT's are 1 ohm DVC. If I was to get another 2ohm DVC BTL I'd hafta run .5 ohm or 2 ohm. With the MT's I can get a 1ohm load which is perfect for my amp. Plus I picked up (2) freshly reconed MT's for $550 total, which is pretty much the cost of a new Fully Loaded BTL //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[SHiZNiLTi 10+ year member]

If I was to fold the rear seats down I would only have 30" of height to work with.

If I was to remove the rear seats I would have 40" of height to work with.

With both options I will only have 37" of width to wrok with..

With the rear seats removed you can see how this will give me alot more room verticaly to work with, especialy if I choose to build a wall.

Here is a side shot of my 2dr blazer to help understand the layout of it....

Below are the dimensions to work with, when the rear seats fold down they are actually level with the rear cargo area...

Let me know what you think I should do with this room.

Another question that I have is that I've noticed alot of you have reccomended that I tune to 28-30hz. Do the MT's really like to be tuned that low? I was originaly thinking to do about 35hz for tuning, opinions?

 

[lilmaniac2 5,000+ posts]

if ur gonna do it, no reason to do it half assed, wall //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[SHiZNiLTi 10+ year member]

Net Volume: 16 cuft

Tuning: 33 Hz

Port Height: 6.5"

Port Width: 35.5"

Port Length: 23.25"

Port Area: 230.75 sq.in.

External Dimensions: 37" wide x 29.5" tall x 36.25" deep.

Seats folded down flat, subs and port face forward, port will be above the subs across the box....

I've got 1800rms going to each RE MT 18.

Should this get loud?

 

[TheFiverMan 10+ year member]

Why didn't you just add another fully loaded BTL? Plus why would you take the rear seats out when you can fold them down flat and put a box on top of them.

x2..that was kinda dumb..fully loaded btl is louder then a MT..