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How to power 12 coaxials off one amp?


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AJRXtreme 
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Joined: June 08, 2004
Location: United States
Posted: July 25, 2005 at 3:12 PM / IP Logged  
I was at a car show yesterday and i saw a Suburban with (14) 3" coaxials in each door, the truck had 4 doors, so he had 54 coaxials inside his car. He only had 3 amps on all these speakers. I plan on doing the same thing to my car but i want to build a tower with 12 coaxials. I want to know how i would be able to power all those speakers off one amp? Also what amp would i use? Thankyou
03 F150 on 24's
HU:Pioneer DVD5700
Frt:MC57
Subs:(12)S12L7
Amps:(3)KX2500.1's, MC-2004
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: July 25, 2005 at 3:39 PM / IP Logged  
Use any amp you like and any number of speakers you like.  Just wire them in series-parallel so the net load on the amplifier does not drop below it's capability (generally 4 ohms.)  It is a show trick, by the way, and will NOT help your sound.  Indeed, multiple mains can hurt a lot more than they help.  But it looks cool.
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AJRXtreme 
Silver - Posts: 302
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Joined: June 08, 2004
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Posted: July 25, 2005 at 3:42 PM / IP Logged  
ok wow, i should have thought of that. Thankyou. I have one more question though. How do i use the crossovers that come with the speakers when i wire the speakers  together? Thankyou Dyohn
03 F150 on 24's
HU:Pioneer DVD5700
Frt:MC57
Subs:(12)S12L7
Amps:(3)KX2500.1's, MC-2004
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: July 25, 2005 at 4:15 PM / IP Logged  

Same as you would normally: one crossover per speaker set (woofer/tweeter).

For 12 4-ohm speakers, wire four parallel sets of three in series for a net 3 ohms load on the amplifier channel, or three parallel sets of 4 in series for a net 5.33 ohms load on the amplifier channel.

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AJRXtreme 
Silver - Posts: 302
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Joined: June 08, 2004
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Posted: July 25, 2005 at 4:57 PM / IP Logged  
I still dont get how to physically wire them. I need visualization, thankyou
03 F150 on 24's
HU:Pioneer DVD5700
Frt:MC57
Subs:(12)S12L7
Amps:(3)KX2500.1's, MC-2004
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: April 22, 2003
Location: Arizona, United States
Posted: July 25, 2005 at 5:09 PM / IP Logged  

Here's one suggestion (net 5.3-ohm load if all speakers are 4-ohms:)

How to power 12 coaxials off one amp? -- posted image.

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