Hello everyone. I have recently changed AMPS. From a crappy Legacy to a Rockford Fosgate 501s AMP. When I first wired it all up, I have turned my car on, and the amp turned on fine. Then after about 3 seconds, the fuse under the hood blows. It was a 60A fuse. I then tried 100A, 70A, 60A, and 50A fuse. And they all blew. I have checked my ground and my power line from the battery. Also, from the batter to the fuse holder under my hood is less then 8 Inches. Approximately 4 inches actually. Is there anything that I am doing wrong? In the rockford fosgate book it says the the fuse from the battery should be less then 18 inches. Does anyone out there know what is happening. Is it the amp or my wiring. Thanks so much. God Bless you!
Brett Davis
P.S. I am using all 8 gauge. All 8 gauge wiring. I am thinking about using 4 gauge all the way to the backseat, where the amp is, then then use a distributive block and put it into 8 and hook it up to the AMP. I have check both cables, positive and negitive for nicks. None at all. I ever tried it with the wires not even tucked under. Still got the same results.
125 watts RMS x 2 at 4 ohms 250 watts RMS x 2 at 2 ohms 500 watts RMS x 1 at 4 ohms in bridged mode Stereo or bridged mono output 4-ohm stable in bridged mode Tri-Way capable Continuously variable 50-250 Hz high-pass/low-pass (12 dB/octave) crossovers MOSFET power supply and output devices MEHSA mounting technology increases the heat transfer from the MOSFET output devices to the heat sink, for higher power output, lower operating temperatures, and greater reliability TOPAZ - noise-killing differential inputs that eliminate 80% of ground loop noise Trans,ana circuitry keeps preamp voltages low and signal paths simple for outstanding audio quality NOMAD - advanced protection circuitry for "intelligent" shutdown protection Wired remote included for fingertip control of Punch Bass (0-18 dB boost at 45 Hz) Speaker- and preamp-level inputs 12-1/16"W x 2-3/8"H x 9-7/8"
a 500 watt class AB amp should require a 60A fuse. If 60A or larger is blowing, your amp has a dead short somewhere. It may be defective. Did you buy this product new?
Yes. I am taking it in to my local Car Audio Depot store tomorrow. They are an authorized Rockford Fosgate seller. For now, here is a picture I just took of the blown fuses.
no, I was serious. That's a nice image to show the fuse sizes and such heh most people don't bother. Anyway let us know what happens when ya take the amp back. I'm curious to find out the problem. It's a dead short somewhere.. in the amp or outside of it.
