Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
|
Car Audio Do you live in your car? Then you need to be able to listen to some high-quality music. |
Show Printable Version | Email this Page | Subscribe to this Thread |
|
Thread Tools |
07-23-2004, 03:06 PM | #1 | |
AF Newbie
Join Date: Jul 2004
Location: dallas, Texas
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
|
decisions decisions....
i am now completely certain that i am getting a audiobahn a8000t amplifier. at 2ohms it will be running at 800 watts and at 4ohms 400watts. in order to get 800 watts to two subwoofers, would i have to get 2 subs with 2ohm load, 2 subs with a 4ohm load, 2 subs with dual 2ohm voice coils, or 2 subs with dual 4ohm voice coils? and also how would i get 400 watts at 4 ohms(same questions)? wow thats alot of questions gimmy feedback. thanx.
charmm |
|
07-23-2004, 07:12 PM | #2 | |
AF Enthusiast
Join Date: Jul 2002
Location: San Antonio, TX, Texas
Posts: 3,100
Thanks: 0
Thanked 2 Times in 2 Posts
|
Re: decisions decisions....
To run the amp at 2ohm, you would simply need the final impedence of the sub setup to be 2ohm. You can do this with 2 SVC 4ohm subs, or 2 DVC 2ohm subs.
To run the amp at 4ohm it's the same deal, but you would need 2 SVC 2ohm subs, or 2 DVC 4ohm subs.
__________________
'01 Black Sentra SE Weapon-R intake, HS header, HKS catback, ES motor mounts, B&M short shifter, Tein coilovers Alpine 9835, Adire Koda 6.1, Adire Brahma 15, Arc 2100cxl, Linear Power 2.2hv, Cadence ZRS-8 '05 Silver WRX STi Injen SES Downpipe, HKS Carbon-Ti catback, Cobb Stage 2 Tune, TiC Super Shifter, TiC Klunk Killer, Tein springs, Nitto NT555R Drag Radials |
|
07-24-2004, 03:22 PM | #3 | |
AF Newbie
Thread starter
Join Date: Jul 2004
Location: dallas, Texas
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
|
Thats really interesting. so if i get 2 dvc 4ohm subs the amp will give both of my subs 400watts.
is this enough for the alpine type s im looking at that is 300w rms 900w max dvc 4ohm? or should i get the same type s with 300w rms 900w max dvc 2ohm giving both my subs 800watts? hit me back charmm |
|
07-24-2004, 03:34 PM | #4 | |
AF Fanatic
|
Re: decisions decisions....
You sir are confused...
When you get 2 dvc 2ohm subs, you will wire them in series parallel yielding a 2 ohm load, which splits to each sub giving them an equal division of the watts, so 400 to each sub. When you wire it with 2 dvc 4ohm subs, you get a final load of 4ohms yiedling 200 watts to each speaker. Get DVC 2ohm subs.
__________________
www.cloudcity.deviantart.com |
|
07-24-2004, 03:46 PM | #5 | |
AF Newbie
Thread starter
Join Date: Jul 2004
Location: dallas, Texas
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
|
okay that makes more sense now haha. i am also making my own box and it has .9 cubic feet of space per side. how could i add a port to this box, or do i have too little room.
thanx Charmm |
|
07-24-2004, 04:27 PM | #6 | |
AF Fanatic
|
Re: decisions decisions....
Let me look into that for you...
__________________
www.cloudcity.deviantart.com |
|
07-24-2004, 04:28 PM | #7 | |
AF Fanatic
|
Re: decisions decisions....
What size sub(s) and how many? What type also?
__________________
www.cloudcity.deviantart.com |
|
07-24-2004, 08:42 PM | #8 | |
AF Newbie
Thread starter
Join Date: Jul 2004
Location: dallas, Texas
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
|
Well, right now im getting 2 12" subs (Alpine Type-S DVC 2ohm like you suggested) and im building a box at the moment. The box is going to be...
Height - 13.5" Length - 35" Bottom Depth - 14" Top Depth - 7" The side will look something like.... ............._______ .........../...........| ........./.............| ......./...............| ...../__________.| (Ignore the periods hahahah) The Subs will be on the flat part. I figured out the inside cubic feet with 3/4" MDF to be ~.91 Cubic Feet for each side of the sub because it will be divided into 2 parts. the recommended cubic feet for a sealed box is .85 to 1.5 Cubic Feet The recommended for a Ported box is 1.24 2.0 cubic feet this is all the space that i have to spare but i was wondereng if there were tricks to make it bigger. (I heard of poly fill but i dont know anything about it or how it would affect my box size or where to get it) hit me back Charmm |
|
07-24-2004, 09:01 PM | #9 | |
AF Enthusiast
Join Date: Jul 2004
Location: San Diego, California
Posts: 308
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: decisions decisions....
since your box is too small for a port, you should get a passive radiator. that's basically a speaker without a motor assembly. so what you'll appear to have is 4 subs, but only two of them will be active and the other two works off of the pressure of the energized subs. tuning them is just a matter of adding weights.
__________________
THE DARKNESS!!! an African Soup Bone Production... |
|
07-24-2004, 10:46 PM | #10 | |
AF Newbie
Thread starter
Join Date: Jul 2004
Location: dallas, Texas
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
|
where could i get something like that? and also could i just put it on the top of the box? how big dose it have to be?
im interested in this passive radiator hit me back Charmm |
|
07-24-2004, 11:34 PM | #11 | |
AF Fanatic
|
Re: decisions decisions....
I wouldn't go with a passive radiator, but you can get one at adireaudio.com
__________________
www.cloudcity.deviantart.com |
|
07-25-2004, 01:32 AM | #12 | |
AF Newbie
Thread starter
Join Date: Jul 2004
Location: dallas, Texas
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
|
what would you suggest then? just keep it in a sealed enclosure?
|
|
07-25-2004, 07:03 AM | #13 | |
AF Fanatic
|
Re: decisions decisions....
I would keep it sealed. Passive radiators are not very accurate
__________________
www.cloudcity.deviantart.com |
|
07-27-2004, 02:39 PM | #14 | |
AF Fanatic
|
Re: decisions decisions....
2.632 total cubic feet 1 Top, 1 Bottom: 11.74 (c) x 18.07 (b) in 0.75 (thick) in 1 Front, 1 Back: 26.81 (a) x 16.57 (d) in 0.75 (thick) in 2 Sides: 26.81 (a) x 11.74 (c) x 0.75 (thick) in
__________________
www.cloudcity.deviantart.com |
|
|
POST REPLY TO THIS THREAD |
|
|