trentonc24

Here is a picture. Its not finished yet, I still have to sand it and paint it. I'm painting it with truck spray on bedliner, but you can get the overall idea.

It was going to be around 3.1 net volume minus the port area and driver displacement. I did some slight tweaking to the measurements to make it fit better and now its coming out around 2.9-3.0 cf. I'm almost done with it, just gotta sand it and paint it

I hit 146.3 with a Rlp 15 tuned to 45 hz with 800 RMS

Ok so heres the deal, its really complicated to build a box to it in your car and that will allow pvc pipe to be used instead of a slot port. I decided to use a pvc pipe because I read it has advantages over slot ports. Ok heres my question. I need to see what you all think of the box design I have came up with. I'm using .75 mdf. The box is going to be a CRX style box, and I'm trying to make it for decent sound quality. The dimensions are 11x31x24, which is equal to a GBV of 3.4 cubic ft, and a Net box volume of 3.1 Cubic ft. The pvc port is going to be 6 inches wide, and 17.7 inches long, which is supposed to tune it to 33hz, the 6 inches will give it 28.2 cubic inches of port area. Is this enough of port area to have decent sound quality? I can't find 7 inch pvc, they don't sell it around here, nor can I find 5 inch to make two 5 inch ports. I'm not worried TOO much about port noise because the port wil be facing the back and I doubt i'd hear it anyways. And another question, with the port facing the back, should I put the port on the left, or right side of the box. I'm guessing the right side because its the furtherst from the drivers ear possible, which is supposed to create less cancelation. Please give me your opinions, will it be ok like it is, or should I change something? Thanks alot

I PMed you about the 8's

I decided to go with four 8's instead of 5 because a highly experienced friend told me .8 ohms would probably hurt my amp. I didn't think .2 ohms would make much of a difference but I guess it does, don't wanna risk it.

I'm not sure what meter it was, I meant to find that out before I left but I forgot. The car was a Acura Integra, with loads of sound deadening. I think I should be able to hit over 150 with four or five eights, I just dont know what to go with I will be in the IASCA competition, they class differently than DB drag I believe.. I signed up for the Stock pro class, I woulda signed up for the Stock class, but I didn't have the recipts for my products. The comp I scored 146.3 in was a local comp, I'm guessing it was probably a Audiocontrol meter, but I'm not sure.

I got my RL-p 15 metered in a ported box running it with about 800 watts and I hit 146.3, which is above my goal but not enoguh for me competition wise. So I was thinking about getting 4 or 5 Assasin 8's for competition. Only problem is that I have a ED 9.1 amp, and it only goes to 1 ohm, the speaekrs would be wired parallel and that would give them .8 ohms. I'm guessing it would be ok to run this on that amp because the wires and everything would bring it to a grand total of over 1 ohm right? Also, would five 8's be overkill? Should I just stick with 4 instead? Thanks alot.

My car is a 95 Acura integra GSR, it is a Hatch. Thanks again

I suppose I can try the CRX box design. I thought of that idea before, that or porting it facing foward, however I just thought CRX boxes were always associated with SPL comps, however if its not gonna mess up SQ (which is definantly what I'm going for) then it sounds like it'll work to me. Thanks alot for the help

If I add the port to the 11.5 inch side then it will be on a different plain as the subwoofer. I am mounting the subwoofer facing up, and if I placed the port on the 11.5 inch side it would make the port on the side of the box instead facing up with the speaker, how bad of a thing would that be?

I'm building a SQ box, for my 15 inch RL-p, and the dimensions I'm using are 25x11.5x33. The wood I am using is 1 inch thick. I plan on using a slot port and tuning it to ~29 hz. The only problem is in order for the port to be on the same plain as the subwoofer and be tuned properly with the right area, it says the port will have to be 31 inches wide, by 1.25, with around 38 inches as the length. I've seen lots of other slot ports and most are opened wider than 1.25 inches. I was just wondering, with it being that skinny would it be tuned properly? It still meets the area requirements, ~38.75 square in. its just skinny, and I wanted to make sure turbulance wouldn't effect tuning in my case. Thanks alot

Thats awesome, so maybe I will be able to reach my goal of 147. I have pretty much the same setup and wattage and speaker as you, but mines a dual 4 ohm. I'll have a higher tuned box and it'll be in a integra hatch instead of a civic hatch, plus I have a load of sound deadening. Thanks alot

I'm not sure if this is the best enclosure design for me, but I've decided to give it a try. I've decided on a crx style box, driver facing up, ports towards the back. The dimensions are 13x30x20. Wood thickness is 1 inch. Total gross volume is 3 cubic ft. Five 3 inch ports 14 inches long tuned to 46 Hz. Has about 35 cubic inches of port area. If I hit at least 145.5, I'll be really happy, but i'm not getting my hopes up lol.

What 15 did you use? and how many decibles did you hit? My amp only draws about 140 amps. I'm getting a odyssey battery soon just in case, I'm getting one I can fit in my stock location so I won't have to be in a different class.