fiberglassing the inside of the box

if i fiberglass the inside of my box dos that make the inside more reflective to the sound waves. iv heard of people doing it in there spl boxes but dos it do something that would be good for a street setup and sould i put fb on the inside and cover it up with soundproofing or sould i gust do the fb and then use polly fill. the outside has bine fg. thanks here is a pic Want to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend

On the12volt you give some info and you get in

sorry about the double post haveing truble with the picWant to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend

On the12volt you give some info and you get in

I doubt it would have much effect on the sound waves.  I figure spl does it for strength in their boxes.  Learning the trade one fiberglass creation at a time!

we do fg insides for strength..it less of a hassel then ribbin the inside of the box..cuz u gota keep in mind out much cu ft the ribs are going to take up were as 1 or 2 layers of fiber will do a good job at keeping the structure ridged and not take up drastict cu ft...also a good way to insure that your box is 100% air tight....another thing about building a box is..using reflective angels in the box...a simple square box is going to keep and retain resin dead bass waves which will cancel out fresh waves and lower your db...i'll always make a box with complex corners and angels..and were i can't....i'll put some ribs in...just something to think about...HU Alpine CDA-9855 Amp MA Audio 802sx 4,400 RMS 1 ohm Sub 18" MA Audio RMS 5,000 @ 1.5 ohm Ported Box Car 99 civic Si

ya i learned about the canceling early on this box has a 50 to 60 degre angle on the back. as for the reply on the fg on the inside thanks man it seems that not meany people have done that thanks for the respones it helped i think one my next box that is going to be holding a MA audio 12 hk12x2 that im going to have to make strong because of the power it pushes ill do the fg on the inside and ill make it with as meany corners as i can come up with. oh ya nice system that ma is sick. well done box. thanks everybody. Want to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend

On the12volt you give some info and you get in

yea np...i fiber glassed the inside of my box and made a top out of fiber glass too...when u get that hk12x2 make sure u power it properly to rms...u gonna need an ma amp for that too...the 802sx or the 4000 D..another thing is you only put poly fill in a sealed box..HU Alpine CDA-9855 Amp MA Audio 802sx 4,400 RMS 1 ohm Sub 18" MA Audio RMS 5,000 @ 1.5 ohm Ported Box Car 99 civic Si

On this post I have heard differently about filling and ported enclosure with Polly Phil.  I have looked up the effects of padding a box or filling it with Polly Phil or some other substance.  If somebody would elaborate on this topic that would be helpful.  I also know that you can use any kind of namebrand amp that can be trusted to power sub.  I'm not saying that you're wrong I've just heard differently on this form.Want to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend

On the12volt you give some info and you get in

sorry to doble post but i have to ask a question about ma audio i have heard that it is more of a spl brand than sq. but i havent heard enything about the amps. and about the sub im going to get a hk12x2 has enybody hear one dose it preform good. ive found a ma 802sx that is referbished that has a good price. are these good amps and do they stand up to the higher priced amps like alpine. lj. jbl and such. sould i go with a different amp to power this sub better and have better qulity. any info would be apresiated. Want to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend

On the12volt you give some info and you get in