I don't have any blue prints. Like I said I basically just shaped it the way I liked. The panel fits in just like the stock one, with no interferance with the rear strut brace. If I extend the back of the panel(for the rest of the sub box for proper volume) it will extend under the rear strut brace. The only cost I had was materials, but other than that it's a lot of time. I was thinking about making them to sell but it's a lot of time into each one.

 

let me know how it looks and sounds when its done. how long did it take to build? and if you do plan on selling id be interested

 

I'll hook some subs up to it here in a few days. It took me about a month to do that, but I wasn't working on it daily. I could finish one in about 3-4 days though. The real problem is the mess it makes. I'll keep you posted how this one comes out, but I still want it to be smoother. I would probably sell for ~300 shipped. What kind of set-up do you have/want?

 

something almost exactly what you have, maybe with either 2 8's or 2 10's. Its fiberglass right? And that price i wouldnt mind at all. Is it going to be removable or pernamently molded?

 

It's removeable, just like the stock panel. I'm not sure how I want to latch it in. Probably the same way the stock panel is latched. I will put stripping/insolation on the back side for any vibrations. It's all fiberglass, I could ship it to you primed and ready for paint of your choice, or I could paint it black. For any other color I'm just afraid I couldn't match it for you.

I'll see how it sounds soon, and I'll begin work on another. Tell me what you want for sure ( 8's or 10's etc. etc.) and I'll begin making it, even if you don't for sure want to buy one I'm going start making another and if anything I'll keep it for my car.
Evan

 

I know everyone is going after something custom. Why not make a carbon fiber sub box!! There is always someon out there that would make your box and make it to your shape and specs that you want.

I know a custom guy that does killer work.

 

carbon fibre's not a particularly good material for sub enclosures - it vibrates due to the lack of thickness. Would look class though

 

Ah, could always do a couple layers of fiber then put a final layer of carbon, right? I've not looked into building carbon fiber things, so I don't know how to do it, so I wonder if that would work.

Blake

 

If you make the fibreglass item, you can send it off to be covered in carbon fibre - much cheaper than about 10 layers of carbon fibre

 

Im still interested i jus dont know what size subs i should get. If you can just wait a lil bit longer, ill let you know. Thanks and I really appreciate it. I think i might paint the box silver to match my exteriour but not sure how that would look. Thanks and ill let you know asap

 

Hey take your time, I'm in no hurry. PM me if you'd like. Thanks, Evan

 

Well so most people like the carbon fiber look. Let me tell you that it would be thick enough. Trust me I know my guy and he would not do anything half assed anyways. He has been in the stereo world for years and now is getting into something a little different.

Question - the hoods that are made of fiberglass, are they more then one layer of carbon fiber??

Answer - no, it would cost the customer way to much to buy them. They cheat and put mat behind it so it is light as the carbon fiber and has all the same properties as fiberglass does!!!!

 

There'd be no reason to do a box completely in carbon fiber though, which is the point of previous posts. It could be done, and it could be done by just putting one layer over the fiberglass. But there would be no advantage to having a box completely made of carbon fiber.

Blake

 

I just molded the bottom half of my fiber glass enclosure. Layering the fiber glass I think will be strong enough without the extra cost of adding carbon fiber. I'm using 1/2" MDF board for the top part.

 

opp's

 

OK this is for all you guys that want to know about the thickness, and use of carbonfiber.
First off I can I can tell you that the carbon will be 1 layer of 12 mil, not like all the others out there that use cheap 4, 6 or 8 mil.
Also then you would need to put ISO sheet foam behind it and then 1 layer of 1oz fiberglass.
now this will make it about 3/4 to 1 inch thick.
Now the sound that comes from a carbonfiber box is like no other.
The box has some flex in it to allow for the base and air flow to move more freelyand you get a better echo of the base.
The weight would be about 1lbs per foot, so you wouldn't have this sub box that weigh's 40 to 50 lbs.
Also I use a new hybrid carbonfiber that comes in 5 colors.
black&red Black&green black&blue black&orange
and also carbonfiber&kevlar.===black&yellow
This is just my 2 cents LOL
Thanks
Hurricane.

 

Well, you don't know much about speaker box design, obviously. The whole point is to ELIMINATE flex. You want the box to move as little as possible. You don't want bass to ECHO.

Blake

 

and where the **** do you get 12mm carbon fibre?!?!?

It's only about 1mm thick at most - it's a weaved material, not cast. Plus as infinatebass said, you dont want it to flex at all, and an echo would be detrimental to the SQ

 

Its probably not mm...I'm not sure what they measure it in. Might have to do with strand size, not thickness.

Blake

 

OK if you think I dont know about sub box's,
Your wrong.
I would gladly put up my carbon fiber box against any one of your box's and I would bet on it I can get a higher decibel rate from my box.
I would only be using 2 ten inch subs.
The small amount of flex is so that the subs have time to catch up with the air flow.
I wont get into this part it would take way to long to for me to explan it.
So that you know I am speaking of a totaly inclosed box.

 

Could you PLEASE then tell me why boxes are made as stiff as possible? Anywhere you look that has info on designing boxes, they ALL mention putting crossbraces, etc in the box to help stiffen it.

Also, why would fiberglass be a good choice for a box when its main property is its stiffness?

Blake

 

OK sorry I never stated that the movement I was talking about is only with-in 1000's of an inch.
An ISO foam with 1 layer of fiberglass on it is harder and stronger then any mdf board.
And will reflect sound waves better.
MDF board absorbs some of the sound waves, because of the small pores in it.
The best way to explan this would be just pour water over the MDF board and you will see that it will soak-up
some of the water.
Were just because of the properties of fiberglass it will not absorb any of the sound waves.
An also MDF board is one of the hardest and cheapest things you can get for your buck.

 

Hurricane-Fibers:

I'm an acoustical engineer -- you have no idea what you are talking about. Your theories about box design and the acoustical properties of cf, fiberglass, and MDF are COMPLETELY wrong.

You ALWAYS want the most rigid speaker enclosure possible. The last thing you want is the enclosure re-radiating the sound generated by the loudspeakers.

Don't believe everything you read on the internet, kids.

 

Well, squash all the technical b.s. how about everyone post some pics of their setup and let's just all get along?

 

=== rynberg
The best way I can think of saying this is.

OK now lets go over a few things here.
First off how do you soundproof a room?
The right way is to use a type of foam that absorbs the sound correct?
Now think about this, foam has pores in it right, that is what absorbs the sound waves.
MDF board also has pores in it so I guess that means that it would absorb some of the sound waves.
Now tell me if I am wrong here but the best way to reflect the sound waves is to use something that will not absorb the sound and will reflect it outward.
I.E. Fiberglass and carbonfiber, Plexiglas are some of the things with a smooth hard surface that is used to reflect sound.
Also if you want a better base pound you want sub-sonic base.
This is what fiberglass/carbonfiber/Plexiglas and some other materials create.
This is the bass you feel not hear that is what vibrates all the trim and things on your car.
I can bounce a quarter and make it flip over on the roof of my car.
You need to have an acoustically balanced box.
Now don’t get me wrong here I think that MDF board is one of the best things out there for sub box’s I was just merely stating what could be done with using a carbonfiber/fiberglass sub box that is all.

Ok do you have any of these degrees ???
CEng, IEng, CIBSE, ICE, IEE, IMechE, IOP or RAeS.
If you don’t then you are by no means an acoustical engineer.
If you are, were did you go to school for it?
I was wondering when an Acoustical Consultant is or equals an acoustical engineer?
If you are what is your degree???