j-roadtatts

You guys are helping me plan my build right now!!! Now "If" I can get it right. No really, now that I know the proper way to start a post and ask for help You guys are going to be answering ALOT of questions!!!

Now thats some pictures!!! The bird is looking good.

I could read until my head hurts and I DO!!! LIke Duran said a couple of days ago how he still reads the tech section from time to time. So I have reprimanded myself here. Long behold I learn the relationship between port velocity and amplifier power from Shizzzon.(ya, you got my vote) Since We have been dissussing kerfed and areo ports alot lately this helped me to understand a LITTLE more!!! As helped me understand WinISD a Little more. Now back to School........

Welcome to SSA. Great place to learn!!!

I want to start out by saying THANKS to you guys that took the time to school me yesterday. Next I want add that I am NOT here to show off. I am here to learn and get the most from my set up. I LOVE to build things but must sometimes learn from my mistakes. Like I said I am here to get my box right and I WILL listen to what you guys tell me. I tried to PM that guy on here that claims to help people design boxes to go over a box design, but he never PMed me back after two weeks So I Just went for it. At this point I would like someone to help me finish my box design. I DON'T think I will waste anymore time fiberglassing. I think I should add two oak dowels from the front to back wall. I will do 45's in the corners IF you think its necessary? ANYTHING else you guys think I should or shouldn't do? I would love to have someone double check my math ALSO. This is my first box design and being built in to the trunk I want to make sure it's right. Let me know if you would like to help and I will post all the numbers. I will use areo ports if needed. I am a VERY humble guy and just want to get the most out of my money and sytem. Thanks again in advance for ALL the help and you WILL get my vote. J-Road

My what a SEXY sub you have got there.

the world of internet print can sometimes be misleading as new info is added everyday, and all the misprints will never be completely fixed. Take everything you read with a grain of salt. The best way to know your facts is call Nathan on the phone. I have already been through this whole conversation with Nathan about the 3400s so you get this one for free. Glad I could help.

Ha Ha where to start. I grew up in a diesel mechanic shop that my dad owned and he would let me strip stereos out of old cars. I had a Kraco tape deck and some Spark-o-matics speakers I mounted on a piece of plywood in my room and wired up with an 12v converter. I was 12.

A little more work done today.

When you say "acts like a mirrior for waves" does this mean the sound waves are more true (being mirriored) to what the speaker is producing? That is how I read this statement. Does this Possibly Refect more mechanical noise?

10ths on a meter, nothing really audible. I do NOT compete. I only listen at full tilt driving on the highway by myself. More interested in knowing if the fiberglass will change the sound? .

I can't put false back on the box this time and DON'T want to see bolt ends. Not my style. If you think The back needs more bracing I will do dowel or a few flat metal brackets inside? The little extra volume won't hurt me. As far as overkill I definetly like to over think things and get carryed away. I respect your opinion alot Duran so please don't hold back.

I am doing the corners and kerf bend twice. The false ceiling on my port is bracing the back wall. All the other walls are pretty small because of the box design. Like I said I was worried about air leaks more than flexing because the other 4 sides will be encased in expanding foam and the front is double baffle. Do any of you guys thing my box needs Bracing?

Thanks for the kind words!!! As far as building things, I enjoy fabicating EVERYTHING and have been collecting tools for 15 years. If I am going to build something I usually spent a long time planning . I would NOT even get out bed if I was going to do something half assed. LIFE is short so lets get to ENJOYING this mutha fucka... As far as the box it's not that complicted, just about two weeks of spare time worth of math and a shiiiiiiiiiiiiit load of patience!!!

Glad to hear you say it won't be audible!!! I was really more worried about the box leaking as I won't be able remove once installed. I was under the impression that the glass would make the MDF act a thicker was my only other reason. Ridged is maybe not always better? Now that the box is glassed a knock test sounds a little higher tone, not as dead sounding as MDF without glass?

Damn your a fast typer. This is what I wanted to hear you say as the box is already glassed.

M5 do you think a little flex will make a softer or "warmer" sound?

So a little flex is possibly a little smoother or "warmer" sounding?

It won't help with much of the above and if by fiberglass you mean resin alone it will actually make the mdf weaker. If you mean glass, well then you should reinforce it as glass isn't particularly great in flat areas. Doing that though will knock the 10ths off from above. Yes I am using cloth with the resin. The box is built out of lots of short spans of MDF, not to many large flat area's. Also four walls of the box will be encased in expandable foam from the outside. the other two walls are the double baffle and the back wall is braced so probly won't much flex much anyway. .If you aren't competing or aren't worth building a few different boxes to play around I wouldn't bother. M5 I respect your opinion and the box is already built so will you check my build log and tell me what you think about the glass in this particular situation?

Beautiful work of ART Jacob. I hope to give you my money someday!!!

I actully read your 1000 post and thought the same thing! I hit a 100 the other day!

The goal of this topic is to discuss the possible effects fiberglassing the inside of a subwoofer enclosure has on the sound? I am currently building my enclosure and am using fiberglass to make the box more ridged, prevent air leaks, prevent flexing, raise the boxes failure point of the box, and I just like building things heavy duty. I honestly never thought about the fiberglass effecting the sound until Pork Chop brought it up last night. I used the search function but did not find anything about effects on sound from fiberglassing an enclosure. I would like to hear some opinions about this from people that have experience with a fiberglassed sub box. I would also like to hear the science about how this effects sound waves even if its not audible. Thanks in advance. J-Road

Actually Fiberglass resin cures by a chemical reaction and creates its own heat. The resin Got rock hard in about an hour. Yeah I just said rock hard...lol.