cutting out, maybe voltage?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=25377
Printed Date: April 27, 2024 at 4:23 AM
Topic: cutting out, maybe voltage?
Posted By: devilsquid
Subject: cutting out, maybe voltage?
Date Posted: January 27, 2004 at 6:12 PM
ok, i have a viper 500.4 amp and i have a sony 10" sub connected to the rear inputs( in brigded or in stereo), and when ever i crank it...especially on low bass, the amp cuts off, and then comes back on, then off again, until i turn it down... I have been told that i need to hook a second battery for this amp, but i wonder what real advantage that will have. adding a battery in series, creates 24 volts, and in parrallel 12 volts, and double amps... the amp has power ratings for 14.4 volts. but how do i get that much voltage to the amp...and will that solve my prob?
Replies:
Posted By: mobiletoys2002
Date Posted: January 27, 2004 at 6:18 PM
when you start your car you get that voltage aproximately. you may need thicker power wire thicker ground wire,bigger alternator. Adding another battery will do nothing for you, at least while the car is running.
Posted By: customsuburb
Date Posted: January 27, 2004 at 6:29 PM
Make sure your sub's ohm rating isnt below 4 ohms (unless your amp is a mono amp ,if this is the case these usually can go down to atleast 2 ohms) if you have your amp bridged because most amps when bridged dont like a load lower then 4 ohms. If you have it running in stereo most amps will be able to handle 2 ohms. If your subs start cutting out on you then your impedance is probobly too low for your amp. I would also make sure your ground wire is grounded well(connected directly to your cars chassis where you have scraped away paint/cleaned the area) like forbidden said.
Posted By: customsuburb
Date Posted: January 27, 2004 at 6:29 PM
I mean mobiletoys2002. sorry
Posted By: DYohn
Date Posted: January 27, 2004 at 6:36 PM
Also, your input sensitivity could be set incorrectly causing the amp to overload. If you are sending too hot a signal to a Viper amp, it will cut out just like you describe.
Posted By: forbidden
Date Posted: January 27, 2004 at 6:57 PM
No matter what the case is, your amp is going into protection as it is designed to do. I would think that Dyohn is on the right path for you. What is the model # of the sub you have?
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Posted By: devilsquid
Date Posted: January 28, 2004 at 1:58 PM
im not sure the of the model number of the sub, but it does it with any sub i use(all at 4ohms)...but i was thinking that this amps just not made to push a sub the way a d class is. Am i right to assume that? -------------
Posted By: DYohn
Date Posted: January 28, 2004 at 2:11 PM
Check you input levels! The amp you list is fine for a 4-ohm sub.
Posted By: devilsquid
Date Posted: January 28, 2004 at 2:28 PM
input levels are 4v from an alpine 9811
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Posted By: DYohn
Date Posted: January 28, 2004 at 2:32 PM
OK, let me be a bit more clear. I believe your amp gain is set too high. You need to setup your amp correctly, meaning you need to set its input level (the gain knob) to match the oputput from your head unit. Do you know how to do this?
Posted By: jeffchilcott
Date Posted: January 28, 2004 at 3:42 PM
i would agree sound thats the gain is too high, and you might be cutting out before clipping
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Posted By: devilsquid
Date Posted: January 28, 2004 at 6:03 PM
im lost....explain! -------------
Posted By: 88Marquis
Date Posted: January 28, 2004 at 7:02 PM
Check your Ground... (easily over looked).
Posted By: devilsquid
Date Posted: January 29, 2004 at 8:28 AM
well, hopefuly problem solved..i bought a 1200.1 viper last night, and im going to install it today...then use the 500.4 for the mids like i planned. I let ya know what happens! -------------
Posted By: DYohn
Date Posted: January 29, 2004 at 8:31 AM
Posted By: devilsquid
Date Posted: March 11, 2004 at 12:46 AM
well now...been bumping for a while and havent cut out once since i got the new amp. Kool beans! now its time for some new subs and fiberglass...lots of fiberglass! -------------
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