sub help!

Post by **GlassWolf** » Thu Apr 06, 2006 10:04 am

the 13W7 is dual 1.5 ohm. only way it's offered.
the zapco puts out 1100 @ 1, so 550 @ 2, and 275 @ 4.
that'd be around 450 watts RMS or so (given a slight increase in efficiency as load increases) at 3 ohms

that zapco amp is about half what the 13W7 needs
get the 1000/1

Jonathan · Post by **Jonathan** » Thu Apr 06, 2006 10:51 am

http://www.roadgearmag.com/article.asp? ... e_number=4

Test of the Zapco 1100M-it put out 905.5W RMS at 4 ohm, 1204.5 into 2 ohm-that's at 14.4V. Doesn't handle a 1 ohm load. Apparently it doesn't double power with halving impedance, which in your case is a good thing. Anyway, should power that W7 just fine, and it's a great amp. Looks like it's similar to the current Zapco Reference 1100.1-which is rated to do 800W@4 ohm and 1100@2 ohm.

soundgirl · Post by **soundgirl** » Sun Apr 09, 2006 10:25 am

But doesnt it change since i am using a stadard 12V power supply...so wouldn't the power decrease with that power supply, then making it closer to 500 watts at 3 ohms?

JeremyC · Post by **JeremyC** » Sun Apr 09, 2006 10:37 am

Yeah if your using a power supply get the JL 1000/1. Its going to be your best bet with the coil config, and only having 12 volts to run it.

Just curious, how are you hooking this up that you need a power supply?

dkguitarist · Post by **dkguitarist** » Mon Apr 17, 2006 3:40 am

also look into a pg tantrum 1200.1 (if you can find one) as they can do up to 1500rms+ 2-4ohms. jl is overpriced. but that zapco would do well.