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Old 12-24-2004, 12:32 PM
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Red face help with my amp

i have a rampage amp that is 500 watts. i had it for a year now and it is now giving me problems. the one that i can't figure out is it plays fine for like 10 minutes then it turns off for like 20 seconds. then it turns back on and off it keeps doing this. so whats wrong
thank you for ur help

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Old 12-24-2004, 04:35 PM
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If you have a protection light, and it's coming on I would check to make sure you have a good ground. Also make sure your ground is the same gauge as your power wire, and the ground wire is less than a foot long.

Usually when a amp is fried it won't power up, and or lose output signal.

Have you had any other problems with the amp?

I am also interested in how you have it wired to your speakers (what ohm...is the amp running mono or stereo), and how stable is the amp. A little more information, and I will be able to get you closer to the solution.
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Old 12-24-2004, 04:38 PM
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no

no no other problems their is one light that tell's u when it is on and the wire that i used for the gound and battery is i think 8 gage. the ground is good it is right down to bear metal.
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Old 12-24-2004, 05:05 PM
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Poor amp, it's tired!

Rodfather, do you make it to Show-n-Go in springdale?
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Old 12-24-2004, 10:31 PM
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First make sure your power cable is large enough, weak power to the amp will let it over heat and shut down to cool. The for a 500 watt amp you should look at adding a capacitor. To generate big bass you need a lot of power so you could be getting to much draw down. The larger feed wire and a good ground should be enough but the capacitor is extra insurance. You can use an amp meter to watch the volt draw down as your bass hits and see if this is the problem. An older style analog meter is better for this.
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Old 12-25-2004, 08:02 AM
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How many speakers do you have wired to the amp and how are they wired? Just a guess, but it sounds like your amp is going into protect mode. Most low end ($$) amps aren't 2 ohm stable, at least they aren't for very long. Trying to operate a non 2 ohm stable amp at 2 ohms for most any length of time will cause the amp to go into protect mode and shut off.

I'd use 4ga minimum for the power wiring.
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Old 12-25-2004, 08:17 PM
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Wink yea

i have a 4 gage wire for ground and power. i have 3 speakers set up 2 12" and 1 10" they are bridged wired.
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Old 12-25-2004, 08:39 PM
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Re: yea

Quote:
Originally posted by wrestlingclub142
i have 3 speakers set up 2 12" and 1 10" they are bridged wired.
That's your problem. The amp is seeing 1 to 2 ohms with all three speakers wired that way. Try running ONE speaker bridged and see what happens, I'll bet the amp will be much happier.

http://www.the12volt.com/caraudio/boxcalcs.asp

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Old 12-25-2004, 08:52 PM
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ok

so what do i do with the other 2 leave them off the amp and get a nother one for them
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Old 12-25-2004, 09:25 PM
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This will provide a 3ohm load. An amp rated 500W @ 4-ohm will be effectivly raised to 750W which could put a strain on the circutry.



A 2-ohm stable amp rated at 500W and wired in the following manner will provide 375 watts.


These diagrams are for 4-ohm speakers. If you have house speakers(8-ohm) or DualVoiceCoil(2 or 8-ohm) speakers these diagrams should not be used.

Last edited by NXS; 12-25-2004 at 10:02 PM.
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Old 12-28-2004, 06:15 AM
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NXS, Why yes I do make it there. However it's usually cheaper to buy stuff from swap meets.

Where you at in OK?
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Old 12-28-2004, 12:39 PM
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I'm about 15 miles west of Siloam Springs. I've known the guys that run Show-n-Go for years now, pretty good guys. Maybe I'll see you around there some time.
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Old 12-28-2004, 12:48 PM
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Cool man...I have a friend that lives in Westville he has a little car lot over there.
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