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Jh8909
12-26-2009, 08:52 PM
The mounting Depth of my 18" Kove Armageddon U2 is 9.5 Inches. What is the minimum amount of depth, in inches, the box can be? because I read somewhere before you have to have at least, a certain amount of room behind the magnet for the sub to function properly. Does anyone know the least amount needed? would it be like 3-4 inches? I am working with a rather small trunk.

x2o
12-26-2009, 08:56 PM
The mounting Depth of my 18" Kove Armageddon U2 is 9.5 Inches. What is the minimum amount of depth, in inches, the box can be? because I read somewhere before you have to have at least, a certain amount of room behind the magnet for the sub to function properly. Does anyone know the least amount needed? would it be like 3-4 inches? I am working with a rather small trunk.


Does that sub have a pole vent?

IIRC, you should leave about 4" behind a pole vent. If it's a solid pole then it shouldn't matter, as long as the box is not flexing and causing the panel to hit the bottom plate, as that would sound terrible.

Jh8909
12-26-2009, 08:59 PM
To be truly honest im not sure what a pole vent is exactly. but this is the back of the Kove http://i737.photobucket.com/albums/xx18/Jh8909/Kove_18.jpg

plugitin
12-26-2009, 09:06 PM
try for atleast 3 inches of clearance...

Jh8909
12-26-2009, 09:11 PM
ok so Im looking at about a minimum of 14 inches deep including the mdf. ok cool thanks!

SicAudio
12-26-2009, 09:56 PM
whatever the pole vent diameter is, is the minimum space you need so if it is 3" then 3 or more is what you need.

Bobby322
12-26-2009, 10:50 PM
^^ x2

I read that you need however many inches the diameter of the vent is of clearance. I have a Treo SSX 15'' and I had it right at the back board of the box and after a few weeks its just busted the board off and sounded horrible until I ran more screws into it :D

Jh8909
12-27-2009, 12:06 AM
lol ok cool. and yeah sister sub basically. so alright. 3 Inches is what im shooting for. its gonna be a tight squeeze! I only have 18" of height in my trunk. lol

Bumpin' Goalie
12-27-2009, 12:09 AM
you could always invert the thing with the magnet and motor sticking out the box. will allow you to go slightly less deep and still have it vent properly

Jh8909
12-27-2009, 12:34 AM
Thats true. I was thinking of that however like i said im working with a rather small trunk, and the way im thinking now is that i may have to have sub up instead of facing front because of the space issues.

plugitin
12-27-2009, 12:35 AM
you going to seal the trunk off from the cabin when firing it fwd?

Jh8909
12-27-2009, 12:51 AM
Is that a question or are you telling me that? and to be truly honest, It's my first time building a box so I am really not 100% positive on what I'm doing. I'm just trying to figure out a way i can fit it in because my back seat does not fold down so I have to slide it in through the trunk opening which is killing me with how deep it can be. too long and it will only ever fit halfway in. :crap:

Bumpin' Goalie
12-27-2009, 12:55 AM
you can build it into your trunk. just use wood glue and bracing and you wont even need to get a drill in there.

lay down some covering to protect interior. put wood in piece by piece. build. brace. pull out covering.

or fire sub up. if you fire it up i recommend at least a little bit of sound deadening on trunk lid. shuld only cost ~20$ to cover it decently

Jh8909
12-27-2009, 01:00 AM
I have a double layer of fat mat on my trunk lid and one layer around the trunk. and glue alone would seriously hold it up just fine? with 2500 RMS? sounds to me like it will break apart on the first hit.

plugitin
12-27-2009, 01:08 AM
Is that a question or are you telling me that? and to be truly honest, It's my first time building a box so I am really not 100% positive on what I'm doing. I'm just trying to figure out a way i can fit it in because my back seat does not fold down so I have to slide it in through the trunk opening which is killing me with how deep it can be. too long and it will only ever fit halfway in. :crap:

if you face the sub fwd, you will want so put sub and port fwd, and seal the trunk off from the cabin. otherwise, pointing sub and port back is the best for trunk cars

plugitin
12-27-2009, 01:08 AM
I have a double layer of fat mat on my trunk lid and one layer around the trunk. and glue alone would seriously hold it up just fine? with 2500 RMS? sounds to me like it will break apart on the first hit.

glue is stronger then the screws :D

some people dont even use screws period

Bumpin' Goalie
12-27-2009, 01:09 AM
Ha yea that power might pop it. Bracing is going to be crucial. Are you thinking dowels? or t bracing? or? trying to think how you could secure everything with bolts, screws, etc while building in the trunk. How many cubes do you need for it? what kind of port, if any? trunk will allow wat depth/height/width? i'll try to map something out that you can build externally.

Are your backseats removeable? could take them out just to put box in.

p.s. good glue is stronger than you'd think :)

Jh8909
12-27-2009, 01:27 AM
Ha yea that power might pop it. Bracing is going to be crucial. Are you thinking dowels? or t bracing? or? trying to think how you could secure everything with bolts, screws, etc while building in the trunk. How many cubes do you need for it? what kind of port, if any? trunk will allow wat depth/height/width? i'll try to map something out that you can build externally.

Are your backseats removable? could take them out just to put box in.

p.s. good glue is stronger than you'd think :)

I dont know the order of how its supposed to be so I'll just spell it out. But these are my max. 35.5" wide, 16" height, 16.5" deep, BUT if you take some you can give some, so it will still fit if its 18.5" deep, 14" height.

and im looking for slot port tuned around 32 Hz. I just want it to kill some lows.

Yeah I was thinking about 45's and t-bracing. and I'm not even sure if my back seats can come out without it being a 6 hour job. I'll try to find that out, but the way its looking right now is that I'm either building it in the trunk or small enough I can slide it in.

plugitin
12-27-2009, 01:28 AM
what kind of car?

Jh8909
12-27-2009, 01:29 AM
if you face the sub fwd, you will want so put sub and port fwd, and seal the trunk off from the cabin. otherwise, pointing sub and port back is the best for trunk cars

Ok hold on. I think I may have my direction mixed up. when you say back you mean pointing away from the engine right? If so then yes I messed up when i said front, I mean back. pointing away from the engine. sorry.

and I do agree sub back/port back is the best.

Jh8909
12-27-2009, 01:29 AM
95 Taurus.

plugitin
12-27-2009, 01:31 AM
Ok hold on. I think I may have my direction mixed up. when you say back you mean pointing away from the engine right? If so then yes I messed up when i said front, I mean back. pointing away from the engine. sorry.

and I do agree sub back/port back is the best.

the best is really sub and port fwd. And then seal off the trunk from the cabin...but usually its a lotta work and some cars you really cant do it this way.

im not sure about those cars back seats...

Jh8909
12-27-2009, 01:37 AM
ok so like a year ago I cut a hole in the rear deck and put a speaker grille over it so I could get some air flow into the cabin. Am I going to have to cover this up? and how would sealing it completely off from the cabin work? wouldn't it sound less loud?

dappa5
12-27-2009, 01:39 AM
if you have a hole in rear deck you should go sub back and port up thru deck will sound great for daily drvr

Bumpin' Goalie
12-27-2009, 01:40 AM
the dimensions you gave me only comes to ~4cubes after displacement. Seems a bit small for an 18 eh? I'm thinking building it inside the trunk with pre cut pieces and plenty of glue is the way to go. and aero ports.
I'd aim for 6 cubes net. but i'd get more opinions on that as i dont have any hands on experience with the Kove Armageddon U2.

35.5Wide 13High 30Deep would come to roughly 6cubes after displacement. Idk about fitting it in the trunk tho if built externally

Porting thru the rear deck would rock your socks. :)

Jh8909
12-27-2009, 01:41 AM
if you have a hole in rear deck you should go sub back and port up thru deck will sound great for daily drvr

Its a 6.5" circular hole directly in the middle of the rear deck, I do not know how I can pull that off though. would you have to flush mount an aero up there?

dappa5
12-27-2009, 01:43 AM
why not? would be trick

Jh8909
12-27-2009, 01:44 AM
the dimensions you gave me only comes to ~4cubes after displacement. Seems a bit small for an 18 eh? I'm thinking building it inside the trunk with pre cut pieces and plenty of glue is the way to go. and aero ports.
I'd aim for 6 cubes net. but i'd get more opinions on that as i dont have any hands on experience with the Kove Armageddon U2.

35.5Wide 13High 30Deep would come to roughly 6cubes after displacement. Idk about fitting it in the trunk tho if built externally

Porting thru the rear deck would rock your socks. :)

yeah I knew it would be 4 cubes after displacement, that was worrying me as well. and jesus 30 deep? im gonna need to re-think how I'm going to mount my amp and second batt.

Bumpin' Goalie
12-27-2009, 01:45 AM
a 6" diameter aero port in 6 cubes running that 18 might have some port noise. Though it would only need to be ~10" to get tuning down to 30Hz. If you went up to 8" wide port it'd go to a 20" length. and a 10"wide would be 32" long.

Jh8909
12-27-2009, 01:46 AM
why not? would be trick

I dont know, just seems hard to do. I've barely ever worked with wood before.

dappa5
12-27-2009, 01:46 AM
pm me your details i'll help you thru it

Bumpin' Goalie
12-27-2009, 01:47 AM
yeah I knew it would be 4 cubes after displacement, that was worrying me as well. and jesus 30 deep? im gonna need to re-think how I'm going to mount my amp and second batt.

that was with height minimized trying to get it to fit easier. if you upped your height to 16 your depth could go down 23.

Also, i am just ballparking what that woofer wants sizewise. wish i knew more about it. i;m guessing it wants ported only?

Jh8909
12-27-2009, 01:47 AM
a 6" diameter aero port in 6 cubes running that 18 might have some port noise. Though it would only need to be ~10" to get tuning down to 30Hz. If you went up to 8" wide port it'd go to a 20" length. and a 10"wide would be 32" long.

see man, know I really dont even know what to do. I don't know whats best. :(

Bumpin' Goalie
12-27-2009, 01:50 AM
as long as you get that monster in there, you'll be happy ha. so dont worry about the details or options. just make sure the box holds up, and doesnt leak. does the Kove accept sealed apps? i cant find specs anywhere.

Jh8909
12-27-2009, 01:53 AM
that was with height minimized trying to get it to fit easier. if you upped your height to 16 your depth could go down 23.

Also, i am just ballparking what that woofer wants sizewise. wish i knew more about it. i;m guessing it wants ported only?

It's basically the same thing as a Treo SSX 18.22

Treo's recommended enclosures are Sealed: 3.4 cu ft, F3=39.4Hz
and Ported: 4 cu ft net, 50 sq in vent, 21.5 in long, F3=31 Hz

Jh8909
12-27-2009, 01:56 AM
I have to get this beast in there. 4" voice coils! :D lol

Bumpin' Goalie
12-27-2009, 01:57 AM
Well then your 4 cubes shuld work just fine. and can still use an aero port to go thru rear deck if you want (completely optional). with your original 4cube plan can you build externally? if so, go for it. use foam board or cardboard or whatever to make a model and check. make it as big as ya can while not causing trunk entry problems

Jh8909
12-27-2009, 02:02 AM
yeah its been rainy out, but I was going to mock it up with some cardboard. and check it out. I'll probally get that done tomorrow.

Bumpin' Goalie
12-27-2009, 02:04 AM
Well i just subscribed to the thread so i can help wherever i can. Just PM me if you have any questions. Night.

Jh8909
12-27-2009, 02:06 AM
night man thanks for your help.

Bobby322
12-27-2009, 02:34 PM
I had my Treo ssx 15'' in 3.5 cubes and I think it wanted more. If you're worried about bracing, then you can do a slot port and that adds bracing itself.

Jh8909
12-27-2009, 03:24 PM
dappa5 is working with me on the design now so we should be able to figure it out. I think I'm leaning through porting through the rear deck.