does fiberglassing inside a box make a diffrence?

I was wondering if any one have good information about a box? Does fiber glassing the inside of a spl box really make a diffrence or is it the same as not doing it?

well i dont know about glassing it but the smoother the box the better.I've heard of people doing just resin and sanding the hell out of it like down to 3000 grit

I see about .4 to 1.2 from raw mdf to resined and sanded

Big difference!

its never hurt my score ill put it that way.lol

our old rex ... everytime we smoothed out the box to get it louder... it fell in score ...was really weard

Do I resin the port area to or leave that mdf?

matching up ports with the right model of the crx is the biggest help though rowland

4 4" ports arent right for everything

lol this was a mwspl build 15inches behind b piller so it was a slotted port 156 raw wood and then 154.somthing after we resoned it and sanded then again then buffed and waxed it ...but with the dbdrag box 2 10s seperate boxes 6 inch ports score was beter all smooooooooth

how big were the boxes for the single 10's with 6"? just curious.lol

exactly 1 cube solo x 10 in each

6" ports= hf dx

4" ports=si

gained bout a db with resin sanding. did resin and sand port also

Some guys gain .1 db every layer of fiberglass applied.Every car and box different?

I heard some guys gained from Glassing or using Resin in their boxes, but I have also heard of guys losing because of it. I really think it depends all on your vehicle.

sanman wrote:: 6" ports= hf dx

4" ports=si

wheres the difference in the car other than the motor here, i bought a dx today is the reason , im ignorant to these for builds at the current time

all si's have a sunroof

Dont know bout this box but it got 1 coat curing right now wit two more to come

crx si for us worked best with 4 6" aeros. had 1 cube each chamber with 2 6" per. we did a 152.9 with 2 pioneer 10s from 1998 ($90 msrp) and switched the face to 2 12" mojos (old orange basket) and did 153.7. we then resined the entire inside of box and went to 154.4 with the 12s. next we resined the exterior of the box and did 154.6 (ext was raw mdf). we then made an identical box out of baltic 13 layer birch and did 154.1 raw 154.8 with inside resinned and 154.7 with outside resined. that was with 2 memphis 4kws and identical deck and amp settings for all to ensure acurate testing and batts were fully charged for each test.

as for resin...i have always seemed to gain but when i resin inside of boxes i also round all corners

Seems like the resin being smooth, it decreases surface tension