PG Tantrum 1200.1 owners pls read...

[audioholic 5,000+ posts]

Hey guys, asked this question a while back, didn't get an answer, thought Id try again. I have 2 tantrum 1200.1's (both benched right around 1550 watts). My confusion comes from PG recommending an 80 amp fuse for that amp. At 80 amps, there is no way in hell I'll ever see 1500 watts through that fuse, slow-blow or not.

So I called PG directly just a few mins ago, talked to a tech who Im not at all confident knew any more than I do about the situation or the product. After discussing it, he came back with recommending a 100 amp fuse. Well thats still 1440 watts allowable, and that would be IF the amp was 100% efficient, which it obviously is not. I explained this to the tech and he said 'oh, you're right, go up to a 120 then'.... gah? Obviously the guy was just guessing, big help there. Why in the hell did PG recommend an 80 amp fuse for a 1500 watt amp? According to the tech, the titanium 1200.1's have a 120amp fuse recommendation. Makes no sense to me.

So, anyone here running a tantrum 1200.1 .... what the hell in-line fuse size/type are you running to it? lol Thanks.

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[cjj2d 10+ year member]

I may be totally wrong but I have always been told you don't fuse the amp, you fuse the wire. so depends on what size power wire you are running.

like I said I may be totaly off base here though.

 

[audioholic 5,000+ posts]

I may be totally wrong but I have always been told you don't fuse the amp, you fuse the wire. so depends on what size power wire you are running.
like I said I may be totaly off base here though.

Yes, you are correct. Technically I AM fusing for the wire. The wire will handle well over the amperage I will be putting through it (4ga), so that is not a problem. The problem is in trying to get a fuse large enough to not blow simply from turning the stereo up. The fused distro block I have uses AGU fuses, which only go up to 80-100amps, so Ive been trying to determine if these amps will simply pop those fuses while still operating under normal conditions, leaving me with the need to buy new fuses of a diff type, and a new distro block or fuse holders and rewire the amplifiers. Unacceptable.

Its clear to me an 80 amp fuse will not be sufficient, now i just need to decide how I WILL fuse these amps. That's why Im curious what other tantrum 1200.1 owners are fusing with.

Thanks for the input.

 

[audioarsonal 10+ year member]

I had a 500.1 that came with 2 20a fuses.Never switched em though.Probably handle it for a while but you might blow some fets on the power side from over heating.