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multiple subs, power division


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donkason 
Copper - Posts: 189
Copper spacespace
Joined: December 27, 2002
Location: United States
Posted: July 29, 2003 at 9:41 PM / IP Logged  
If you wire 4 dual 4 ohm v.c.'s in series and then run all 4 subs parallel you get a 2 ohm load to your amp. If you amp is supposed to put out 1200 watts at 2 ohms each speaker should get 1200 watts, correct. This has become a point of controversy in some other post and I want to get it cleared up by a professional.
nedgeworth 
Silver - Posts: 264
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Joined: November 03, 2002
Location: Australia
Posted: July 29, 2003 at 9:50 PM / IP Logged  
Effectively each voice coil will receive 150watts. So each sub will be grab 300watts from that amp. What are models of sub and amp are you looking at running?
donkason 
Copper - Posts: 189
Copper spacespace
Joined: December 27, 2002
Location: United States
Posted: July 29, 2003 at 9:54 PM / IP Logged  
It is for another person on the 12 volt. He is looking to run 4 kicker L7's and a kicker 1200.1 amp. I thought the power was distributed evenly, 1200 watts each sub because each sub was at 2 ohms. Maybe I am wrong. I still need some more opinions before I change my mind.
wvsquirrel 
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Posted: July 29, 2003 at 10:02 PM / IP Logged  
The 1200 watt rating is the total amount of wattage that is produced for the channel under a 2ohm load at the terminal (where the speakers connect to the amp). It doesn't matter if you have 1, 2, 3, 4, etc... speakers hooked up. As long as you have a 2ohm total load at the amp, then 1200 watts total is produced. That 1200 watts gets distributed evenly (for all intensive purposes) among any subs connected to that channel.
In your example, each of the 4 subs would receive 300 watts since the total final ohm load at the amp is 2ohms. Since each of the subs is a DVC, then each voice coil would receive 150 watts (effectivly still 300 watts per sub).
Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
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nedgeworth 
Silver - Posts: 264
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Joined: November 03, 2002
Location: Australia
Posted: July 29, 2003 at 10:02 PM / IP Logged  
You divide by the number of drivers. And running DVC is effectively 2 subs in 1 in a sense. So you divide the 1200 by 8. If it was only one sub then it would be getting 1200 total to it. But 600 per coil.
nedgeworth 
Silver - Posts: 264
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Joined: November 03, 2002
Location: Australia
Posted: July 29, 2003 at 10:05 PM / IP Logged  
Thanks squirrel. You have a bit better way with words than me at the moment. Probably cause i'm trying to work and do this at the same time multiple subs, power division -- posted image.
bberman1 
Gold - Posts: 2,314
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Joined: March 11, 2002
Location: United States
Posted: July 29, 2003 at 10:06 PM / IP Logged  
The power will be divided by the number of drivers. So each sub will not be getting 1200 watts. Each sub will get 300 watts.
Special-K 
Member - Posts: 43
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Joined: June 02, 2003
Posted: July 29, 2003 at 11:27 PM / IP Logged  
Yeah like the rest said, each sub will recieve about 300 watts each. Nice choice of subs and amp btw.
wvsquirrel 
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Location: Florida, United States
Posted: July 29, 2003 at 11:39 PM / IP Logged  
Which model L7's are you referring to? The 10, 12, or 15
Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
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Special-K 
Member - Posts: 43
Member spacespace
Joined: June 02, 2003
Posted: July 29, 2003 at 11:46 PM / IP Logged  

BTW you will want to run more than that to those subs. Like 500+ each.

Under powering is bad.

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