Stereo guys - Need some opinions

[KatDiesel]

Well I am looking into a nitrous setup, and I have a regular cab truck. I have a box behind the seats with 3 10" subs in it. I am trying to figure out where to mount my bottle and wondering if I remove the subs to make room for bottles and replace the 3 10"s with a single 12" in the center console what a difference that will make in the sound?



I'm pretty happy with the way the stereo sounds now, with the 10"s I can crank it pretty loud but the bass doesn't really travel all that much unless I have it really cranked. Sounds great incab... .

 

[JGarcia]

KatDiesel,

I think you'll be pretty happy with a 12", as long as it is in a sealed unit. My experience has been that the more important factor is providing the bass or sub woofer with it's own power source, then you get to worry about where to put extra amplifiers! But, I have not really played with a truck cab, just cars.



Good luck, JRG

 

[Bigramguy]

I'm not sure what size nitrous bottle(s) your going to use,but we have done a Ram 1500 360 with two small bottles below the centre seat area. It is nice because you can just reach down and turn them on from the drivers seat. It did involve some mods to the centre seat section under the console. This setup will probably allow you to keep your existing box behind the seat.



If you do decide to put the bottles in the back,and make a new box,there are some subs out there that require very little box volume,and still provide awesome bass. I have built some high end systems with one 10" or one 12" that you would swear there were 4 15's in the back. It all in what you use,and the box it is in as far as bass output.



If you listen to pop\rock,then smaller subs in a smaller sealed box,will sound better. If you like really deep boomy type bass,for rap\reggae etc,then bigger subs in a large ported bandpass box are the way to go.



We have done a few rams with custom boxes so if you want to see some different designs once you decide just let me know and i'll dig them up.

 

[jwgary]

Have you thought about just using two 10's? You could shorten the box and have enough room for the bottle. I also thought about the center console set-up, but my girlfirend likes to sit there and she needs a comfortable seat too. Since you have a regular cab, your options are more limited. Two 10's will sound good too. I only had one 10 in my '91 gasser reg cab and it was great. There is a lot to be said for the speaker firing right into the seat you are sitting on. Good luck.

 

[KatDiesel]

2. 5lb... 14" long 3. 50" diameter

5lb... ... 18" long 5. 25" diameter

10lb... . 20" long 6. 75" diameter

15lb... . 28" long 6. 75" diameter



I am going to make some "paper" bottles with the dimensions and see what fits where. I was thinking of two 5lb bottles, teed together, but depending on what fits the best is what I will use.

 

[KatDiesel]

Originally posted by Bigramguy

If you listen to pop\rock,then smaller subs in a smaller sealed box,will sound better. If you like really deep boomy type bass,for rap\reggae etc,then bigger subs in a large ported bandpass box are the way to go.



We have done a few rams with custom boxes so if you want to see some different designs once you decide just let me know and i'll dig them up.

I listen to country, then a lil bit of everything else, thats why I chose 10"s in the first place.



I am very interested in different designs if you have them handy.



I was told I need a 15° angle for the bottle.

 

[K_Arts]

Pending on the power to the subs and how they are wired, you can make 1 12 sound as good if not better then 3 10's. It's all based on tuning the encloser. Being that the same power will be powering less speakers, you may have a possibility of losing a couple of db's, but then don't forget, having the 10's muffled against the back of your seat you will also lose some sound.



So you can give and take in both directions.



Kev

 

[Cooker]

I'm with Kev



Here is a pic of a enclosure w/ 2 10" woofers. You could leave the middle open and that will give you enough room for a big NOS bottle



I have some other pics as well, but they are all similar designs.



FWIW - Given your type of music, I'd say you will be happy with 2 - 10's or even 1 - 12, but you already own the 10's you might as well use them. JMHO



#ad

 

[K_Arts]

Cooker...



Except for the fact that I'm not a Sony person... that install is really clean and looks good. Thanks for sharing that pic. .



Kev

 

[KatDiesel]

Originally posted by Cooker

Here is a pic of a enclosure w/ 2 10" woofers. You could leave the middle open and that will give you enough room for a big NOS bottle

I kind like that one, is that a custom job or a prefab one, basically what kinda cost? If you have access to that particalr setup can you measure the length of the middle section at a 15° angle. I am told I will need the bottle at that angle for proper operation.

 

[Cooker]

I'm not a sony person either, but the red of the equipment matches the red of his truck pretty nicely. Also, I'm not a big one for rear fill, so I persoanlly would have left out the coaxials that are built into the box.



I'm sure it is a custom job. As far as cost, in my area if a shop were to build something similar, w/ carpet, and installation I'd guess $200-$250.



I don't have access to his particular setup, but the enclosure I started to build is very similar.



To obtain maximum space for the subs, the "hole" in the middle is only ~17". This provided me with about 1. 2 cubic feet of space/side for the woofer. That is narrow enough to allow the seat to move all the way back. I don't know what model of woofers you have so I cannot comment on how much space they will need. But if you need more space between the enclosures (and it appears you will to fit a NOS bottle in there) you could easily make the enclosure narrower (from side to side) This will cut into the volume of the box, but if your woofers require 1. 2 ft3 you could sacrifice a notch of seat adjustment and make the box a little fatter (front to back). I think you understand what I am getting at.



You could also just go down to one woofer and that will give you pletny of room for your bottle and you will regain some storage space.



Let me know if can help,

Ryan

 

[KatDiesel]

Ok so I wanna drop 1 speaker and have a box with a center opening to bolt the bottle too. I need about a 21 to 22" center opening and will have 1 10" speaker on each side bihind the seat. How do i determine how much space each speaker needs? Where do I get a custom built box that suits my needs? Local stereo shops?



Found a sheet in one of the boxes.....

Rockford Fosgate RFZ2810 is my sub model

sealed box vol = . 75 cu ft

sealed box vol = 21. 225 liter



Does that mean each sub requires . 75 cu ft in a sealed enclosure?



Is there a program that lets you play with box designs and dimensions? Or is it all done on paper?

 

[K_Arts]

The quickest way to determine how much space each sub needs is to visit the manufacture's website and look up the specs on that particular speaker.



Rockford Fostgate



Yes, that does mean that each sub needs . 75 cu ft of volume.



As far as the box, Any stereo shop should be able to build you a custom box that will fit your needs.



I honestly haven't found any good software applications that allow you to freelance a speaker enclosure. I normally do it all on paper... being that I know the equasions to see how much volume there is in the enclosure.



Feel free to call me if you need help... it's a lot easier to explain this in person.



One last thing. By looking at the model number of your sub, it looks like they are an 8ohm Impedance... . this brings up a whole new issue. The way you wire the speaker, will determine it's final impedance. So the next question that arises is... . what type of impedance load can your amp handle and at how many channels?



Kev

 

[Bigramguy]

Yes,you will need the specified volume for a sealed enclosure. If you decide to build a different style box,you will need more speaker specs to design it.



Personally,I would stick to the sealed,as the work better and sounds better.



It's easy to calculate the box sizes. Basically multiply length X width X height (in feet) to get cubic feet. These must be internal measurments,so you must deduct the thickness of your materials. Best material is 3\4" MDF. So a . 75 cu ft box could be 18" long,12" high and 6" deep internally,externally would be 21" X 15" X 9".



You can play with the numbers to get it the size you want.



If you want,send me the measurements from behind your seat (I don't have a reg cab handy),and I'll come up with some boxes for you.

 

[Cooker]

KAT,



There are programs to do this, but in this case it is pretty easy to do on paper. If you want to be able to tilt the seat all the way back, you are limited to the size of the box anyway.



I just finished building mine so I have a pretty good idea of the dimensions you have to work with.



For a cleaner look I decided to run the box from side to side. The only drawback is that the rear speakers are now worthless. This doesn't bother me as I am not a big fan of rear fill anyway.



. 75ft^3 is really not a very large box. I can tilt my seats back 100% and my box is 1. 2 ft^3 (the size of the basket must be reduced from the size for the box to come to an accurate internal volume).



You can obviously reduce the size of the box for your application. You will have to reduce the side to side dimension of your box, my box has a 17" opening in the middle and you are needing a little more. It should be no problem given the dimensions and the sizes you are dealing with.



Any decent stereo shop should be able to help you out.



Let me know if you need any more help.



-Ryan

 

[KatDiesel]

Its a Rockford Fosgate 360. 2 amp I just can't remember if its Punch or Power. Its got the lil "remote" adjustable gain I guess you would call it.



I think the model number is G13602



I'm running late and have to head out... ..... Thanks for the posts so far. I'll be gone most of the weekend, but I'll try to digest the info and ask some more questions later.