i have an Alpine MRV-F345 http://www.crutchfield.com/S-GofpVtA8s24/p_500MRVF345/Alpine-MRV-F345.html running my 4 speakers and SPL-620 http://www.sonicelectronix.com/item_7728_SPL+DK2-620.html running my 2 subs.....i am using 8 gauge wiring throughout with a 60 Amp AGU Fuse (on main power wirefrom battery ) what do i need to upgrade to becuz the fuse is in pretty bad shape and the alpine keeps cutting out on me.
The 8 gauge is just large enough for the Alpine by itself - if it's cheap 8 gauge it might actually be too small.
I would get a dual amp kit with 4 gauge primary with 8 gauge going to each amp. And don't get one of the cheap ones with a 60-80A fuse. You want it to have an ANL fuse that's 100-150A.
This one's pretty nice: http://cgi.ebay.com/LIGHTNING-AUDIO-4-8-AWG-DUAL-AMP-INSTALL-POWER-KIT-NEW_W0QQitemZ170435245912QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item27aebb7758#ht_887wt_1165
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