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Amp wiring requirements

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Member - Posts: 1
Member spacespace
Joined: December 18, 2006
Location: United States
Posted: December 18, 2006 at 3:14 PM / IP Logged  

I am going to be adding an Alpine MRP-F240 (40x4) and Alpine MRP-T220 (140x1) to the current system in my 2004 Ford F-150 crew cab.  My question is about proper wire gauges.  I have searched many times on this website, although many posts come close, I am looking for a professional opinion based on my components/vehicle.  I have used the gauge table on this website as well as the calculator on Stingers website...both suggest 8 guage, but have no advice on splitting the power cable.  What I want to do is run a power cable from the battery to behind the rear seat (+/- 12 feet) into a 1 in 2 out distribution block, then power cables to the amps (+/- 4 feet).  What would the pros use for safety and performance?  Thank you in advance for any replies. 

Platinum - Posts: 5,352
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Joined: November 01, 2003
Location: Alberta, Canada
Posted: December 18, 2006 at 4:30 PM / IP Logged  
I would use 4 gauge for the main power run to the distribution block. Now that said you do not have to have a distribution block either. If the amp has a screw down terminal on the amp, use that point to split the wiring. All that is required is some appropriate sized spade terminals. Yes you can run the 8 gauge line but at this stage of the game I would personally run 4 just in case you want to go into a bigger sub amp in the future.
Top Secret, I can tell you but then my wife will kill me.
Copper - Posts: 58
Copper spacespace
Joined: April 15, 2006
Location: Canada
Posted: December 18, 2006 at 6:46 PM / IP Logged  
For sure, what if in the future you want to upgrade to something bigger?
you'll have to run new wires, and even though you know where the wire goes its still a waste of time
when current is in wires, its ok if it is bigger it doesnt effect anything,
but when its smaller, then you can have problems... 
run some 4 awg, even 6 if you want....
93' Cutlass

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