View Full Version : Buzzing sound while accelerating
01-27-2004, 08:18 PM
I've got an orion amp, not sure how many watts or channels or anything, but its hooked up to 2 MTX 12"subs. Whenever i have the radio on, but turned down to a low volume, or even no volume, whenever i accelerate, theres this buzzing sound coming from i dont know where. The higher the RPM's the higher pitched the buzzing sound. What the hell is this?!?!? It just started doing this about 2 weeks ago. Im guessing it has something to do with wiring....but i have no clue. Help...:think:
01-27-2004, 09:31 PM
a big list to choose from. bad rca's, bad ground, faulty equipment, etc.. bad deck or amp will give you alternator noise. i've seen that more common than a bad ground.
BC Rod and Custom
01-27-2004, 10:31 PM
Usually noise is introduced through the ground. Can you hear it when the radio is turned up to normal listening volume? Just about any aftermarket stereo will have some whine. Mine does whine a little bit but you can't hear it after volume knob hits 20 and it never drops below 30 anyway.
01-27-2004, 10:39 PM
I would always start with a grounding issue on alternator whine that is the number 1 cause.
Not nessecarily the amp ground, but usually is.
If your battery is not grounded to the frame, engine, and body, and each of those parts grounded to each other(the best way to ensure a good ground) it can whine.
If the engine is not grounded to the frame and battery then it will cause it because the alternator itself is not grounded.
01-27-2004, 11:32 PM
i'll have to listen closely, but i don't think i have any whine in mine at all.
i agree to check the grounds first, it's the simple thing to do. then work to the rca's, and to the bigger components. in this day and age, it seems most people know enough to have good grounds. which could be why i've seen more faulty equip. than faulty grounds. different people in differerent areas will have different norms i guess.
01-28-2004, 10:39 AM
Try getting an old pair of RCA's and cut one end off, and ground the - and + together, then do the same for the other channel.
Then take these RCA's and plug them into the amp, and turn it on, to see if the noise is still there, if it is then it's most likely a ground problem, if not, then it's your RCA's
Watch this (http://www.davidnavone.com/MutingPlug/Muting2.wmv)
01-30-2004, 08:51 AM
they make noise filters or isolaters that you plug into your rca cables..i had to do that before and it helped maybe u should try it
01-30-2004, 09:44 AM
ground loop isolaters are just a bandaid for ground loops. they dont fix the problem. as mentioned....check all your grounds. make sure they are solid and grounded to bare metal. if possible....use the same location for all grounds.
01-30-2004, 09:47 PM
Freq is very right replace the rca's if that is your problem, don't use loop iso's..
I know the cheap rca's with the 3 or 4 "ears" on them tend to be more prone to ground noise than a decent to high end cable with the solid ground end.
Usually on the power supply side of the amps a good capacitor will do, but that is more common in non amplified factory or aftermarket only head unit systems.
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