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jl audio 13w7 and kicker kx2500.1 wiring


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samuelsteven 
Copper - Posts: 123
Copper spacespace
Joined: April 27, 2003
Posted: September 06, 2009 at 4:39 AM / IP Logged  
Ok, so Ive got 2 13w7s and to power them, I have the KX2500.1. The reason I originally got this model over the ZX2500.1, is because I read on lots of forums, that the ZX, wasnt capable of doing 1 ohm without going into protect, and people said the KX was. Originally had it on 2 L7s, but I now Have 2 13w7s.
My question is,should I wire the subs at 1.5 ohms to get full potential from the amp? And would this be safe?
Any advice, is greatly appreciated?
jeffchilcott 
Platinum - Posts: 2,483
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Posted: September 07, 2009 at 9:08 AM / IP Logged  
Both the KX and ZX 2500.1 are capable of a 1 ohm load.   
The ZX is techinally not rated for a 1 ohm load, but with the proper electrial system I have seen them run without issue for a long time at 1 ohm daily.
Either amp would work fine at 1.5 ohm, but I would say the kx is a better bet as it produces its rated power at 1 ohm.
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samuelsteven 
Copper - Posts: 123
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Joined: April 27, 2003
Posted: September 07, 2009 at 1:08 PM / IP Logged  
Really? I thought I read it was 2 ohms as well on the specs. Was there two options on it maybe? If that were true, the amp would be perfect for the subs
i am an idiot 
Platinum - Posts: 13,581
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Joined: September 21, 2006
Location: Louisiana, United States
Posted: September 07, 2009 at 1:17 PM / IP Logged  
This is the KX1200.1   http://ampguts.realmofexcursion.com/Kicker_KX1200.1/   The 2500 will share the same specs as far as rated ohm load.
samuelsteven 
Copper - Posts: 123
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Joined: April 27, 2003
Posted: September 07, 2009 at 1:21 PM / IP Logged  
Anybody know how to mod a KX2500.1 to be able to run it under 2 ohms? I need it to run at 1.5ohms
i am an idiot 
Platinum - Posts: 13,581
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Location: Louisiana, United States
Posted: September 07, 2009 at 1:21 PM / IP Logged  

Is it going into protect when you try it at 1.5?  Are you trying to make it stable at that load, or just wanting to burp it?

samuelsteven 
Copper - Posts: 123
Copper spacespace
Joined: April 27, 2003
Posted: September 07, 2009 at 1:21 PM / IP Logged  
Actually, I havent tried it yet, Ill be done building the box for it later today, Its a ported enclosure tuned to 30Hz with just over 5cu sq ft. I just want to make it stable at 1.5 ohms, it should be more then enough power for the 13w7s.
i am an idiot 
Platinum - Posts: 13,581
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Posted: September 07, 2009 at 1:21 PM / IP Logged  

That amp is very costly to repair.  Very Costly.  I would not recommend running it for extended periods of time at that load.  If it were me, I would use the following relay setup in order to be able to play at 6 ohms for extended times and switch to 1.5 for short bursts.

Switching from Series to Parallel and Back ( link)
When the relays are at rest (normally closed position) the woofer coils are wired in series. When ground is applied to each coil (energizing the relay coils), the voice coils are wired in parallel. With 2 four ohm voice coils you'll have an 8 ohm load at rest and a 2 ohm load when the relay coils are energized.
For each dual voice coil woofer that you want to change from series to parallel, you'll need two relays for each. They can all be controlled from the same switch.
 
jl audio 13w7 and kicker kx2500.1 wiring -- posted image.

samuelsteven 
Copper - Posts: 123
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Joined: April 27, 2003
Posted: September 07, 2009 at 1:21 PM / IP Logged  
But how much power will it let out at 6 ohms? Close to nothing, don't you think?
i am an idiot 
Platinum - Posts: 13,581
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Posted: September 07, 2009 at 1:21 PM / IP Logged  
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