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mic*
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July 2005
Re: stereo clipping+screech as turned off+background noises+HELP PLZ Thu, 17 November 2005 01:22 Go to previous message
Kurt.R wrote on Wed, 16 November 2005 20:14

Yes I understand what I wrote, I studied electronics for years to become an Avionic technician (fix electronics on aircraft)
You are quite right with what you say about the signal from your deck being AC. What i'm talking about when i refer to the outer wire of an RCA connection being a 0V reference is this:
an AC signal looks like a sound wave, it go's up and down, + and -. This needs a reference other wise how will the amp know how high or low the signal is. I got the idea from Phil at CAE but he did not have to explain the reason behind it as I could tell straight away where he was coming from.
This can help fix problems in even the most technically perfect stereo install as there are other things to consider that may impact on the sound quality like a 'noisy alternator'.
any way i'm glad that your stereo is all fixed.
Cheers,
Kurt.


Ok, so i think what you are saying then is that the "reference" is the ground wire of the signal wire???

If so, then i agree, and thus my question remains. How does introducing noise, which is what you do when you connect anything to your chassis (which you amp is usually connected to), help???

What type of RCA's do you use? I think that may be where the answer lies. In a single core sheilded design, the outer sheath is the ground wire to the signal and any introduced current is noise that will be amplified. In a twin core sheilded design the outer sheath is sheilding which is connected to the ground wire at one point, but the ground and signal wires both run through the middle of the lead. Somehow this sheilds both wires from electromagnetic fields which would otherwise cause noise.

If you can explain more to me about RCA design then i think i mite understand you better, coz i dunno that much. If you have studied to be an Av-tech then you should be able to explain to me in electronics principles what earthing your RCA ground will do for you.
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Read Message   stereo clipping+screech as turned off+background noises+HELP PLZ love ke70Thu, 10 November 2005 10:56
Read Message   Re: stereo clipping and screech as turned off illuminatusThu, 10 November 2005 22:12
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Read Message   Re: stereo clipping+screech as turned off+background noises+HELP PLZ Kurt.RMon, 14 November 2005 09:34
Read Message   Re: stereo clipping+screech as turned off+background noises+HELP PLZ love ke70Mon, 14 November 2005 09:42
Read Message   Re: stereo clipping+screech as turned off+background noises+HELP PLZ Kurt.RTue, 15 November 2005 09:19
Read Message   Re: stereo clipping+screech as turned off+background noises+HELP PLZ mic*Wed, 16 November 2005 03:00
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Read Message   Re: stereo clipping+screech as turned off+background noises+HELP PLZ Kurt.RWed, 16 November 2005 09:14
Read Message   Re: stereo clipping+screech as turned off+background noises+HELP PLZ love ke70Wed, 16 November 2005 09:33
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