posted
A frend and I just got finished with an install for another friend of ours. Ive read all over the net that any of the RF punch amps will run @ 2ohm mono without any problem, so naturally, we bought 4 8 ohm alumapro alusonic 12's so we could run them in parallel and BOOM.... So we did the install, (sweet i must say) and the amp was fine, but we only had 40 amp fuses at the time, and we kept blowing them (not just blowing them, shattering the glass casing too). So we decided to get some 60's. Well low and behold 2 days after we bought them, the amp just stopped working... I was impressed with the sound that the amp produced and WHOAH the power, but why did it blow up?? help me out...
------------------ Boom goes the black eclipse, ouch goes my ears
posted
Here is a couple of reasons that come to my mind:
1. The gains were to high. 2. You weren't feeding it enough power, they suck a LOT of juice at 2 ohm mono. 3. You weren't keeping it cool enough. 4. Something shorted out in the wiring
Just a couple of ideas ..
------------------ ---RougeDude--- "If it's not loud enough your probably already broke!"
posted
I can't say I can pinpoint how much current it is going to need (Lord Dukkolio?), but it is going to be in excess of 100 amps quite easily (at 2 ohms mono). Your stock Honda alternator is probably 60-80 amps, in which case it is more than likely considerably to small to be running that amp for any extended period of time at full blast. This doesn't mean you can't run it though ..
------------------ ---RougeDude--- "If it's not loud enough your probably already broke!"
posted
Sounds weird to me that the resistance load should cause the death of this amp. Last dead RF amp I saw were killed by a shorted speakeroutput. Resistors-dust and bits were spread on the outside of the amp, and it poured out when lifting out the amp. Also it had the nice smell of hot roasted resistors in the morning... If this scene is similar to what was found in the install u'r referring to, chances are something got shorted.
To answer how many ampere the amp draws. The birthsheet says aprx 1000w, right?? The amp has a efficiency of aprx. 50%, so the amp draws 2000w. Lest say the car provided 14V.
I seriously doubt anyone will ever manage to make the RF 800s pull 140ish A constantly, but I'd say is should be able to pull as much as 100A when playing at max (not adviced for mortal's drumhins). Can ur battery provide this? And there were pr'lly other amps in this install too.
posted
My experience would lead me to believe that a sagging voltage killed it. A fuse is a funny thing - if you lower the voltage enough, it can pass WAY more current than it says on the case. Bad thing is that the amp also will draw more current when the voltage is down - this will make the power supply section of any amp kill itself. I had a guy melt an 800a2 pretty good in a Honda. It was at 4 ohms too, but said that his lights were like on permanent dim while it was working.
More power will be needed. An alternator is the best bet and is even a relatively well priced option compared to others...
------------------ Blow your mind - PORT your box!
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