need fuse advice

Ok currently installed in my car is.....

2 x 12" Cerwin Vega Stroker 2ohm DVC subwoofers with a 2000w RMS and 4000w peak power handling!!!

4 x Phoenix Gold Octane-R series R15.0:1 class D Monoblock amplifiers with 1500w output each!!!!

ok i originally had only 2 of the phoenix gold amps installed and never had any problems with fuses blowing or anything... but now that i have the 4 amps installed my fuse keeps blowing so i can safely and obviously assume that the 1 x 80amp AGU fuse i have installed is not anywhere near the properply needed fusing for this setup!!

i just upgraded alternators to a 240watt which i upgraded all the wiring for it to 0/1awg wiring!!

i would like some advice from anyone and the more the better, about what size fuses, and where they should be installed and how and well anything u can recommend for the setup i have installed!!!!

ANY HELP ASAP WOULD BE GREATLY APPRECIATED!!!!

Thanks in advance to all that reply 

Do you have 0/1 gauge power wire to the amps?

4 amps of that magnitude on 4 gauge. Not such a hot idea.

https://www.the12volt.com/info/recwirsz.asp

2 of those hungry mustards on 4 gauge is not a good idea unless the run is 3 feet. I can't imagine a 240a alt is going to keep up with 4 of them either.

yeah i kinda figured 4 awg wouldnt cut it thats why i am geting the 0/1 awg

any tips on fusing my setup at all??

Were you unable to read the link I posted?

https://www.the12volt.com/info/recwirsz.asp

oh DUHH... i only looked at the top chart!! my bad

so let me make sure i got this right.... it is telling me that for 1/0 awg wire i need a fuse maximum of 350amps.... am i understanding that correctly???