Amp to stay away from: Infinity reference 7540a

[Vanhecht]

i have been through two already on warranty alone, using 4 sony explode speakers all with rms <90w... i was reeled in by the rated specs of 111w rms x 4ch @ 14.4v @ 4ohms ... well i never had the damn thing past half power on the front and rear channels, and it took a dive...
the first one i got didnt even work, and to tell you something else, they dont even repair this amp under warranty; they just replace it! which tells me that they know its a piece and continue to sell it anyways.

[KuruptGTA]

yeah...infinity has been on a slow decline for awhile. I'm sure that the Sony speakers didn't help though. I'm surprised they didn't catch fire! :eek:

[Vanhecht]

never had the amp turned up to anything past half its supposed power...

[KuruptGTA]

That's good...what gauge of wire are you running to it? Specs...RMS, Ohm load, etc...

[Vanhecht]

to power the amp: 8 gauge
to power the speakers: 16 gauge

6x9 3 ways: Peak Power Handling: 240 Watts - RMS 80 watts
6.5 3 ways: Peak Power Handling: 220 Watts - rms 70 watts

amp specs

111 watts RMS x 4 channel at 4 ohms and ¡Ü 1% THD + N 278 watts RMS x 2 channel at 4 ohms, 14.4V supply and ¡Ü 1% THD + N

[Vanhecht]

running monster rca for both front and rear

from the battery: 4 gauge to a monster 100 amp breaker to a scosche 4/8/8 distribution block then 8 to the amps

the other amp being a kenwood 2 channel 800 watt amp