Fordmods Logo

subwoofer setup 

 

Page 1 of 1 [ 8 posts ] 

 
 Post subject: subwoofer setup
Posted: Wed May 02, 2007 1:04 am 
Stock as a Rock
Offline
User avatar

Age: 42

Posts: 169

Joined: 30th Nov 2004

Gallery: 5 images

Ride: ef falcon

Location: perth
WA, Australia

as i havnt bought my subs and amp for subs yet i thought id ask before i bought them soon... so i need to know a few things about the subs to know what amp i really need to get the best out of them

im going to be using two rockford fosgate t112d2's
now there impedence is 2ohmx2 im guessing that means 2 coils at 2ohms each now does that give me a 4 ohm sub?

now wiring, whats best? and what impedence will i end up with??
series wiring the subs? parallel wiring the subs or individual channel to each sub(which is what i was going to do)

basicly the amp i was looking at will give slightly under the power handling of the subs at 2ohms so if the subs are 4ohms and its best to wire them a certain way then ill need a diff amp to run them....

if anyone can help or even make sence of my issues answers would be much appreciated!!!

thanks
matt

 

_________________

stage2cam,lukeyheaders,highflowcat2 1/2, 2 1/2 exhaust 3 hotdogs, 17x235/45 17x255/40's

Top
 Profile  
 
 
Posted: Wed May 02, 2007 1:24 am 
Getting Side Ways
Offline
User avatar

Age: 35

Posts: 4316

Joined: 30th Oct 2006

Gallery: 18 images

Ride: Envi EF

Location: Grafton
NSW, Australia

Well each sub can be wired in series or parallel to give either a 1 or 4 ohm load to the amp. per sub.
Either way youll probably have a 2 ohm load on the amp.

 

_________________

>>>{DESCRIPTION}<<<

Top
 Profile  
 
 
Posted: Wed May 02, 2007 2:00 pm 
Stock as a Rock
Offline
User avatar

Age: 42

Posts: 169

Joined: 30th Nov 2004

Gallery: 5 images

Ride: ef falcon

Location: perth
WA, Australia

are the subs 2ohm or 4ohm if they are 2ohm the amp im looking at will be fine???

 

_________________

stage2cam,lukeyheaders,highflowcat2 1/2, 2 1/2 exhaust 3 hotdogs, 17x235/45 17x255/40's

Top
 Profile  
 
 
Posted: Wed May 02, 2007 2:25 pm 
Getting Side Ways
Offline
User avatar

Posts: 704

Joined: 19th May 2006

Gallery: 1 images

Ride: 2003 BA XT

Power: 141 rwkw

Location: Perth
WA, Australia

Yes it will be fine.

Lower impedance means more power, but also more heat.

Run it at 1 ohm if you can, and the amp documentation should state if it is 1ohm stable or not.

Otherwise just do 2 or 4ohm.
Top
 Profile  
 
 
Posted: Wed May 02, 2007 2:33 pm 
Stock as a Rock
Offline
User avatar

Age: 42

Posts: 169

Joined: 30th Nov 2004

Gallery: 5 images

Ride: ef falcon

Location: perth
WA, Australia

yer aiming to run them at 2ohms but the subs impedence is 2ohms x2 for each sub does that mean they r 2ohms or 4 ohms?

 

_________________

stage2cam,lukeyheaders,highflowcat2 1/2, 2 1/2 exhaust 3 hotdogs, 17x235/45 17x255/40's

Top
 Profile  
 
 
Posted: Wed May 02, 2007 3:37 pm 
Getting Side Ways
Offline
User avatar

Age: 35

Posts: 4316

Joined: 30th Oct 2006

Gallery: 18 images

Ride: Envi EF

Location: Grafton
NSW, Australia

Each coil is 2 ohms - like you said.
Depends on how you wire them. You can make each sub either 1 ohm or 4 ohm. Then you can wire them at 2 ohms to the amp.
Each coil can only take half the total rated power though, so its best to wire them both up.

 

_________________

>>>{DESCRIPTION}<<<

Top
 Profile  
 
 
Posted: Wed May 02, 2007 3:54 pm 
Stock as a Rock
Offline
User avatar

Age: 42

Posts: 169

Joined: 30th Nov 2004

Gallery: 5 images

Ride: ef falcon

Location: perth
WA, Australia

ok well the subs are rated at 600wattrms 1000peak so i was going to use a 2 channel amp 1000wattrms so 500wattrms x2channels at 2 ohms or 250wattrms x2 channels at 4ohms.

so after reading amplifier and sub doc's i thought 2ohms would give me good power vs control.

i dont want to go buy it if i should have just bought a mono to run both subs at 2ohm's

reason im asking now is because i have this feeling ill go spend a fortune on these and then get told "nar mate u should have just bought this type amp and wired it like this"

 

_________________

stage2cam,lukeyheaders,highflowcat2 1/2, 2 1/2 exhaust 3 hotdogs, 17x235/45 17x255/40's

Top
 Profile  
 
 
Posted: Thu May 03, 2007 1:14 am 
Stock as a Rock
Offline
User avatar

Age: 42

Posts: 169

Joined: 30th Nov 2004

Gallery: 5 images

Ride: ef falcon

Location: perth
WA, Australia

ok i think i have a better understanding after having a look around and basicly they are saying i would be best running a mono amp to run both subs probably one stable at 1-2ohms as i plan on wiring as a 2 ohm load
http://www.the12volt.com/caraudio/woofe ... ations.asp

 

_________________

stage2cam,lukeyheaders,highflowcat2 1/2, 2 1/2 exhaust 3 hotdogs, 17x235/45 17x255/40's

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 8 posts ] 

Who is online

Users browsing this forum: No registered users and 28 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Thu Dec 26, 2024 5:30 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names