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Aeroplane sound.......
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<blockquote data-quote="Kippo" data-source="post: 1309299" data-attributes="member: 10096"><p>make ur self a muting plug. Go out and buy 4 pcs of RCA plugs.</p><p></p><p>Then :</p><p>1. connect the outside conductor of the RCA to the inner conductor. This makes a short circuit and the voltage across it will be zero volts.</p><p></p><p>2. Put the muting plugs in you amp INPUT... and not at the OUTPUT (if ur amp has one).</p><p></p><p>3. A Muting Plug supplies a perfect signal to test an audio component. This is because a Muting Plug has a signal level of 0 Volts at a Source Impedance of 0 Ohms.</p><p></p><p>4. If u just unplug ur RCA cables leaving ur amp RCA input open, its like an open circuit with a very high source impedance. It will be subject to the noises in the near vicinity of the amp input.</p><p></p><p>5. Now your Blaupunkt amp will have zero volt input with muting plug at the amp input. If u still have the noise, that means anthing from ur amp or ur power connections is picking up the noise. Usually it is the amp that is the problem.</p><p></p><p>6. Try getting good connections on the amp (like sanding off the paint for the ground etc.). If you still got noise then send your amp for repair.</p><p></p><p>7. If no noise then go up the chain i.e. put ur muting plug at electronic xover (if u have) or pre-amp.</p><p></p><p>8. If u have no noise with muting plug up to the point of your HU then it means it is either your HU or your RCA cable is the source of noise.</p><p></p><p>9. take off ur HU and bring it closer to your amp. Use very very short RCA cable (any cheap one will do) or if u can find it, use Male to Male RCA changer/adaptor to directly hook to your amp.</p><p></p><p>10. If u have noise then ur HU is having a problem. If no noise then ur RCA cable is the problem.</p><p></p><p></p><p>now go get it doing and tell the results.</p><p></p><p></p><p>cheers.</p></blockquote><p></p>
[QUOTE="Kippo, post: 1309299, member: 10096"] make ur self a muting plug. Go out and buy 4 pcs of RCA plugs. Then : 1. connect the outside conductor of the RCA to the inner conductor. This makes a short circuit and the voltage across it will be zero volts. 2. Put the muting plugs in you amp INPUT... and not at the OUTPUT (if ur amp has one). 3. A Muting Plug supplies a perfect signal to test an audio component. This is because a Muting Plug has a signal level of 0 Volts at a Source Impedance of 0 Ohms. 4. If u just unplug ur RCA cables leaving ur amp RCA input open, its like an open circuit with a very high source impedance. It will be subject to the noises in the near vicinity of the amp input. 5. Now your Blaupunkt amp will have zero volt input with muting plug at the amp input. If u still have the noise, that means anthing from ur amp or ur power connections is picking up the noise. Usually it is the amp that is the problem. 6. Try getting good connections on the amp (like sanding off the paint for the ground etc.). If you still got noise then send your amp for repair. 7. If no noise then go up the chain i.e. put ur muting plug at electronic xover (if u have) or pre-amp. 8. If u have no noise with muting plug up to the point of your HU then it means it is either your HU or your RCA cable is the source of noise. 9. take off ur HU and bring it closer to your amp. Use very very short RCA cable (any cheap one will do) or if u can find it, use Male to Male RCA changer/adaptor to directly hook to your amp. 10. If u have noise then ur HU is having a problem. If no noise then ur RCA cable is the problem. now go get it doing and tell the results. cheers. [/QUOTE]
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