this setup, whos is it? Options

[CelicaST_CALI]

ok i was looking through my pictures and i found this pic,i love this setup whos is it?I was wondering what it sounds like to have the subs pointing into teh cabin of the car.



This post has been edited by CelicaST_CALI: Jul 12, 2007 - 2:14 AM

[94celigts]

I turned my subs around one time and took the seats down to hear it personally i found that i didnt like the sound at all it lacks the reverberation needed to create a proper bass. I found it alot weaker and basically it was like i was getting air blown at my head

[CelicaST_CALI]

yea i think im going to liek make mine diagonal,im going to make a diagram
i dont think i will make the box this big but im pretty sure im going to do this on both sides of the trunk:(the white circle is the sub)


This post has been edited by CelicaST_CALI: Jul 12, 2007 - 1:58 PM

[CaliJeff]

well, whoever owns that car, it appears to be a coupe which is red, and is not a gt-4 or ss series

[Valo666]

is that silver thing stock, but just reupholstered??

[Sinyk]

Depending on the quality of your subs, you may get more mechanical/cone noise from facing your subs into the cab. I have always preferred to have my subs facing the back most of all, second facing up.

What I want to know is if anyone has used any of the shallow mount subs to make a really small box in their hatch? I picked up a Kicker CVT 12" with a 4 5/16" mount depth and I have been designing a box to fit between the strut towers, but since I put my strut bar in, I'm a little short on space. I'm also going to hide the amp, cap and xover behind the seats sunk-in to the back of the box, if there's room.

[CaliJeff]

is that silver thing stock, but just reupholstered??

idk, i don't have a coupe. in the hatchback, we dont have sumthin like that, so it would have to be custom.

[CelicaST_CALI]

yea im thiinking of these subs from best buy,i haeard them with a good amp and the hit hard,but they were in a 100$ box...I like how they look like a real old sub look.
http://www.bestbuy.com/site/olspage.jsp?sk...d=1166840602883

[Redline08]

Bass is omni directional so the only thing that subs pointing towards you do is suffocation. The sounds are the same regardless of posistion but air is moved in the direction the sub is facing, therefore when the subs are pointing in you feel it right in your chest, its alot different than just listening to bass, its like a full body experience lol.

[jesterwr217]

when the subs are faced forward it doesnt give the vibrations from the soundwaves much to bounce off of ....when they face the back they have more to bounce off of causing the deep tones and vibrations.....i would recomend not doing that (the pic) cause you can also blow subs not giving the soundwaves things to bounce off of just like playing subs in a hatch with the hatch open not good for the subs at all

[Redline08]

why would bass need something to bounce off of ??!??!
Im sorry man but that really doesnt make any sense, i can see maybe squeezing a little sound out of them by placing them towards something, but hurting them?!?!

Im gonna need an explanation.

[jesterwr217]

why would bass need something to bounce off of ??!??!
Im sorry man but that really doesnt make any sense, i can see maybe squeezing a little sound out of them by placing them towards something, but hurting them?!?!

Im gonna need an explanation.

kinda the same idea with building subs in a box instead of just bolting them to open areas like other speakers it causes them to tear believe me i used to do installs for a living

[Sinyk]

So true. The cone is displacing air when it moves and if there's nowhere for it to go, the pressure can cause damage. Bouncing the sound off of the hatch makes a noticeable difference as well. When I had my 15's and my 12 in my old car, I made multiple boxes for different orientations of the subs to find which position and angle sounded the best.

Bass may be omni-directional, but there are other factors. If your sub doesn't have the leads woven into the spider, they can slap against the sub and cause mechanical noise, which tends to be louder if your subs face into the cab. I always had my subs facing backwards and firing in reverse phase. I got the same amount of kick and smooth bass.

This post has been edited by Sinyk: Jul 18, 2007 - 2:29 PM

[CelicaST_CALI]

yea i think im going to face them the other way dignally and block off from the trunk to teh cab
Im going to take out the rear seats and somehow make somethinng, with he sub box as the wall between the so it will make a V witht eh bottom of the Vpointing towrd teh cab and teh top toward the rear.(ill make a pic soon.

[soven]

when the subs are faced forward it doesnt give the vibrations from the soundwaves much to bounce off of ....when they face the back they have more to bounce off of causing the deep tones and vibrations.....i would recomend not doing that (the pic) cause you can also blow subs not giving the soundwaves things to bounce off of just like playing subs in a hatch with the hatch open not good for the subs at all

do not make sense. Do all home subs rip apart?

They blow because when you have your hatch open, there is no cabin gain,Sub sounds softer so people turn the subs up and blow them. Nothing to do with sound not bouncing off enough...

Playings subs with the hatch open is not a good idea because there is no reason to do so but it will NOT blow your subs. Subs blow when they are not in a box because there is no air pressure(volume of air in box acts like a shock absorber) to "control" the cone.

The setup in the first post is perfectly fine and will NOT blow the subs.

This post has been edited by soven: Jul 19, 2007 - 6:37 AM

[jesterwr217]

when the subs are faced forward it doesnt give the vibrations from the soundwaves much to bounce off of ....when they face the back they have more to bounce off of causing the deep tones and vibrations.....i would recomend not doing that (the pic) cause you can also blow subs not giving the soundwaves things to bounce off of just like playing subs in a hatch with the hatch open not good for the subs at all

do not make sense. Do all home subs rip apart?

They blow because when you have your hatch open, there is no cabin gain,Sub sounds softer so people turn the subs up and blow them. Nothing to do with sound not bouncing off enough...

Playings subs with the hatch open is not a good idea because there is no reason to do so but it will NOT blow your subs. Subs blow when they are not in a box because there is no air pressure(volume of air in box acts like a shock absorber) to "control" the cone.

The setup in the first post is perfectly fine and will NOT blow the subs.

actually it will blow you subs but i dont like arguing with ppl i was just passn on advice so if you wanna take the risk have at it its your money

[CelicaST_CALI]

hey jewster...i think ur in everyone of my post now..lol LEAVE JEW,lol jk u can stay ur knowlegable..anywhoany body ever taken out there back seats just to see what they could do with that area..

[soven]

Bro, I am not trying to argue but spreading false info isn't good and needs to be clarified. you can pm me if you would like but I can assure you that I know what I am talking about.

Anyone can think of how a subwoofer works and go from there. If you believe that a subwoofer can kill itself due to pressure build up in front of the woofer(considering there wont be much) then would subs blow if you put them in a smaller box? The answer is no, in actual fact putting them in a smaller box would allow you to run more power to the subwoofer without killing it as the cone is dampened more. In that sense, if subwoofers blow due to pressure, why put them in a box and cause pressure buildup on the back of the cone, wouldnt it kill it? anyway, just trying to give some examples and if you said what you said in an audio forum, people will laugh

[jesterwr217]

Bro, I am not trying to argue but spreading false info isn't good and needs to be clarified. you can pm me if you would like but I can assure you that I know what I am talking about.

Anyone can think of how a subwoofer works and go from there. If you believe that a subwoofer can kill itself due to pressure build up in front of the woofer(considering there wont be much) then would subs blow if you put them in a smaller box? The answer is no, in actual fact putting them in a smaller box would allow you to run more power to the subwoofer without killing it as the cone is dampened more. In that sense, if subwoofers blow due to pressure, why put them in a box and cause pressure buildup on the back of the cone, wouldnt it kill it? anyway, just trying to give some examples and if you said what you said in an audio forum, people will laugh

aaaaaaany way like i said ive seen it happen its not going to go immediately no but it does cause more wear and tear on the subs and they will eventually go and that will be a big factor in it aaaand putting subs in too small a box isnt good either cause they dont get the airspace they need and can pop when tryn to play (not good for the sub) and its not false info like i said ive done this for a living

[soven]

I rest my case. You base it on experience and "common sense" when something goes wrong and make a professional assumption of what caused an error. While it is ok on occasions, more often than not it is not actually what is causing the error.

I will just state a few points again. The air in the box provides acoustical suspension to the sub. The bigger the box, the less air would restrict the driver's motion which = less damping. Use a subwoofer free air and it will have lower power handling because the damping from the box isnt there. Having a subwoofer installed as it is shown in the first post will not cause the subwoofer to die earlier, there is no reason to believe so.

Oh well, believe what you will but if you ever get the free time. Post this question on an audio forum and see what people say. Google should also bring up information on this. Search for subwoofer enclosure building or something like that and you will get experts on the field with articles regarding things like this.

http://www.diymobileaudio.com/forum/index.php?
http://www.talkaudio.co.uk/vbb/index.php
http://forum.elitecaraudio.com/

[Dragondog]

ok here are some answers from pesonel experince i did the same thing i bolted amp and cap to back of seats and folded them down and had 2 12s facing through with a light and blew one out too had to replace, it looks really really cool but the sound is false you do not get that deep tone. it really sounds like a reg speker just with treb. and mid. turned all the way down but when its facing the back the deep tone bounces around creating a true bass sound and what makes it better is the closed trunk with closed back seats.........and more on i have an over sized box for my 2 12s fosgate, speakers are made to have no blow holes so my box is all closed witch cuz of that i get a good deep echo within my box as well as deep tone bouncing around in the trunk, i made a smaller box for the 12s, for trunk space, and it was also inclosed in a plexy glass box and it sound like crap i took off the plexy and it sounded better but i was not feeling it, the box did not echo like the bigger one did so i switch back....smaller trunk space is a price i pay for better sound................i would like to remodel the whole trunk but if i do i would lose my spare tire and to this day without it i would be lost

This post has been edited by Dragondog: Jul 22, 2007 - 10:08 PM

[soven]

What material was your sub box made out of?

A good subwoofer box should not vibrate at all or vibrate very little. 18mm MDF would be the recommended minimum to use for a subwoofer box. 25mm would be even better but that is bloody heavy. Your subbox should not vibrate and cause unwanted echoes etc etc. Its purpose is simple:

1. Air tight(if sealed box) and not colour the sound in anyway.
2. Correct volume to give the correct amount of damping to the subwoofer cone.
3. Baffle must be adequate to prevent backwave cancellation.

What is backwave cancellation? I am sure you all know physics and know about dropping a stone into a pond and you will see the ripple effects. What happens when they meet? They either sum together or they cancel each other. How does a speaker/subwoofer work? same thing. It vibrates and thus creating sound waves that is similar to the effect you see in the water. Most people forget that, if you turn a speaker around.... you will still hear sound. soundwaves emit from the speaker from the front of the cone and from the back as well. Now, if you did not slow down the back wave enough... it is going to interfere with the front wave in the listening space.
*This is one of the reasons people use dynamat on their inner door trim. It is to slow down the backwave enough that it would not interfere with the front wave of the speaker.

The reason why your subwoofer sounds louder when it in the trunk?
see here: http://www.teamrocs.com/technical/pages/aiming.htm

This post has been edited by soven: Jul 23, 2007 - 12:35 AM