QuestionMy Kenwood 800W amp's model # is KAC-7201, and there are in fact a couple blade fuses on the side of the amp, but they are not getting blown at all. I know that the new subs are 2 ohm Kicker CompVRs- KKR 05DCVR122.
• Two 12" CompVR® subwoofers
• 1200 watts peak power
• 25-500Hz frequency response
(info taken off of circuitcity.com)
All I know about the old subs is that they were less powerful-each one could only handle 400W peak power I believe. I think they were rockford fosgate H2's.
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-----Question-----
I have a 99 chevy cavalier convertible. I used to have two 12" rockford fosgate subs connected to an 800W kenwood 4 channel amp. I believe my subs are bridged. The main power wire is run to the car battery and there is a 40A fuse in a plastic case protecting the line. I blew one of the subs and so I recently replaced them myself with two 12" kicker CompVR's. I merely took the old subs out of the box and connected the correct wires to the new subs. My problem is that now every time I try to give it even a quarter of the power I was putting out before, I blow the main power fuse. I have gone through about 6 fuses in the past week. Please help me.
Thank you for your time,
Chuck
-----Answer-----
the new subs probably have lowwer ohms than the old subs which puts a higher demand on the amp which may blow the fuses. Can you provide me with the exact model numbers of the amp, old subs and new subs and I'll be able to tell.
Also is there a fuse in/on the amplifier as well? (sometimes they have the little blade fueses on the amp)
Thanks!
Answerok, well you've got 2 problems. Problem number 1, your fuse at the battery on the line that goes to the amp should be equal to or slightly larger than the combined fuses on the amp. It looks like your amp has 2 30 amp fuses which is 60 amps so you should have a 70,80,90 or so amp fuse on the line up by the battery. Most people think this fuse is to protect the amplifier but its job is realy to protect the car from the wire catching fire in the event of a short. you can make it as high as the wire can take, not the amplifier (if the amp has its own fuses inside like the kenwood does). If you only have 8 guage wire I'd recomend a 60 amp fuse but if you have 4 guage you can go as high as 100 amps.
problem number 2 is that your amplifier is only stable to 4 ohms in bridged mode and you put 2 ohm subs on it. (the amp says it's 2 ohm stable but that's in 4 channel mode, you're running it in 2 channel bridged mode so its only 4 ohm stable.
so basically this amp is not a match for these subs.
you really should run subs off a mono amp or at worst a 2 channel amp but never a 4 channel amp.
a good bang for the buck amp for these subs would be:
http://www.cardomain.com/item/POWOV21200
good luck and let me know how it goes!
