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2 vs 4 ohm subwoofers


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the-ghost 
Member - Posts: 5
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Joined: Septemberá19, 2006
Posted: Septemberá19, 2006 at 4:24 AM / IP Logged  

hello experts ,

I have an altima 2005 and I have already  replaced the four OEM speakers with Alpine's R-Type speakers

in the front : SPR-17LS

in the back : SPR-69LP

--------------------------------------------------------------------------------------

now im planning to intall a 12''  R-type subwoofer with

this amplifier : MRD-M605

to acheive the best configuration without affecting the car electrcity or the car head unit or draining the battery or over heating the amplifier

should I go with this subwoofer

SWR-1242D(4┘ + 4┘)

or

SWR-1222D (2┘ + 2┘)

they are the same in everything except the ohms

and thanks very very much who would give me a little help

supradude 
Silver - Posts: 915
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Joined: Septemberá21, 2004
Location: South Carolina, United States
Posted: Septemberá19, 2006 at 7:12 AM / IP Logged  
What are the specs for the amp? I'm not familiar with that model number.
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DYohn 
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Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: Aprilá22, 2003
Location: Arizona, United States
Posted: Septemberá19, 2006 at 9:35 AM / IP Logged  
Your amplifier is capable of a 2-ohm load, so use the DVC 4-ohm speaker, both VCs in parallel.
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the-ghost 
Member - Posts: 5
Member spacespace
Joined: Septemberá19, 2006
Posted: Septemberá19, 2006 at 1:52 PM / IP Logged  

this is the specs of the amp

http://www.alpine.com.au/products/product4.asp?id=211

and these specs of the subwoofers :

http://www.alpine.com.au/products/product4.asp?id=221

http://www.alpine.com.au/products/product4.asp?id=222

I have olready replaced the OEM car speakers

all the matters now is chosen correct subwoofer with that amp

thanks

the-ghost 
Member - Posts: 5
Member spacespace
Joined: Septemberá19, 2006
Posted: Septemberá19, 2006 at 10:52 PM / IP Logged  

as it's written in the website in the diagram

the amp will go fine with both subwoofers

but i don't know what is the difference between them ?

any recommandation please?

stevdart 
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Joined: Januaryá24, 2004
Location: Pennsylvania, United States
Posted: Septemberá19, 2006 at 11:02 PM / IP Logged  
DYohn wrote:
Your amplifier is capable of a 2-ohm load, so use the DVC 4-ohm speaker, both VCs in parallel.
Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
the-ghost 
Member - Posts: 5
Member spacespace
Joined: Septemberá19, 2006
Posted: Septemberá20, 2006 at 4:16 AM / IP Logged  

so which subwoofer should I buy ? the SWR-1222D (2 ohm ) ?

or the SWR-1242D (4 ohm) ?

supradude 
Silver - Posts: 915
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Joined: Septemberá21, 2004
Location: South Carolina, United States
Posted: Septemberá20, 2006 at 6:07 AM / IP Logged  
The SWR-1242D, wire it in parallel like DYohn said.
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the-ghost 
Member - Posts: 5
Member spacespace
Joined: Septemberá19, 2006
Posted: Septemberá20, 2006 at 7:03 AM / IP Logged  

yes now i got it

so I will buy the SWR-1242D and wire it in parallel .

thank you very much guys


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