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Location:
Brisbane
Registered:
July 2005
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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Wed, 16 November 2005 03:00
 
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| Kurt.R wrote on Tue, 15 November 2005 20:19 |
Earthing the RCA inputs on the amp helps to cut out noise caused by having slightly different voltages between earths caused by the different insulating properties of the car chassie(spelling?) and different size earth wires. It also helps if you can earth everything to the same point.
Phil, the owner of 5 Car Audio Excellence stores suggested this to me and it works a treat. The outside of the RCA lead is simply a reference for the signal which travels down the center. It just so happens that this reference is 0V i.e. earth.
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Do you actually understand what you have written???
I must be honest and say i dont really. Can you explain it any better or are you just relaying what Phil told you?
Dont get me wrong, i am not picking on you or calling bullshit, i jus wana understand the physics basis for why this would have a positive impact. Beleive it or not its not the first time ive heard of this being done.
As you described, RCA's have an outer sheath or wire. Call this a reference if you like, 0V, ie earth, -whatever- but that is where i lose you.
By definition voltage is the electromotive potential difference between two points. In this case the inner & outer RCA wires.
My understanding is the "signal" travels as an AC (alternating current) waveform down the centre wire, the outer "reference" serves to complete the circuit with the alternating current. Hence when there is signal (from source unit) and an amp connected, then there is a closed circuit and a voltage - a potential difference between inner and outer wires which causes current flow.
To then introduce the DC current which is running through your chassis into the circuit by cross connection...
How is that gonna help???
i understand that there is no path of lesser resistance through your RCA's for the amp or any other electrical component to earth current through, so in a correctly wired system doing this RCA thing should do nothing??? In a system suffering from bad power supply or bad earths tho... the possibility of DC current being pulled through these circuits is greater and should be prevented.
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| | Subject | Poster | Date |
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stereo clipping+screech as turned off+background noises+HELP PLZ
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love ke70 | Thu, 10 November 2005 10:56 |
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Re: stereo clipping and screech as turned off
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illuminatus | Thu, 10 November 2005 22:12 |
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Re: stereo clipping and screech as turned off
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mic* | Thu, 10 November 2005 23:06 |
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Re: stereo clipping and screech as turned off
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love ke70 | Thu, 10 November 2005 23:53 |
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Re: stereo clipping and screech as turned off
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mic* | Fri, 11 November 2005 00:04 |
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Re: stereo clipping and screech as turned off
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illuminatus | Fri, 11 November 2005 00:08 |
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Re: stereo clipping and screech as turned off
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mic* | Fri, 11 November 2005 00:15 |
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Re: stereo clipping and screech as turned off
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love ke70 | Fri, 11 November 2005 00:30 |
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Re: stereo clipping and screech as turned off
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WiLo | Fri, 11 November 2005 03:14 |
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Re: stereo clipping and screech as turned off
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illuminatus | Fri, 11 November 2005 04:15 |
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Re: stereo clipping and screech as turned off
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love ke70 | Fri, 11 November 2005 05:18 |
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Re: stereo clipping and screech as turned off
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love ke70 | Fri, 11 November 2005 07:22 |
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Re: stereo clipping and screech as turned off
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love ke70 | Sat, 12 November 2005 00:34 |
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Re: stereo clipping and screech as turned off
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oldcorollas | Sat, 12 November 2005 02:01 |
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Re: stereo clipping and screech as turned off
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love ke70 | Sat, 12 November 2005 02:05 |
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Re: stereo clipping and screech as turned off
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Phrostbyte | Sat, 12 November 2005 05:14 |
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Re: stereo clipping and screech as turned off
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love ke70 | Sat, 12 November 2005 07:40 |
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Re: stereo clipping and screech as turned off
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oldcorollas | Sat, 12 November 2005 02:00 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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Kurt.R | Mon, 14 November 2005 09:34 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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love ke70 | Mon, 14 November 2005 09:42 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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Kurt.R | Tue, 15 November 2005 09:19 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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mic* | Wed, 16 November 2005 03:00 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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Phrostbyte | Mon, 14 November 2005 10:02 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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love ke70 | Mon, 14 November 2005 10:33 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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mic* | Tue, 15 November 2005 07:27 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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love ke70 | Tue, 15 November 2005 07:48 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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mynameisrodney | Tue, 15 November 2005 12:48 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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clubagreenie | Tue, 15 November 2005 12:22 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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love ke70 | Tue, 15 November 2005 12:29 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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Kurt.R | Wed, 16 November 2005 09:14 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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love ke70 | Wed, 16 November 2005 09:33 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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mic* | Thu, 17 November 2005 01:30 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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love ke70 | Thu, 17 November 2005 01:34 |
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Re: stereo clipping+screech as turned off+background noises+HELP PLZ
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mic* | Thu, 17 November 2005 01:22 |
