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<blockquote data-quote="helotaxi" data-source="post: 414625" data-attributes="member: 550915">The power wire is DC.&nbsp; If it is affecting your AC signal, then you have problems with your DC not being DC.It can&#039;t bring it in if it can&#039;t get rid of it.&nbsp; It won&#039;t cause noise but it might keep the amp from making proper power or cause it to clip earlier than it would with a good supply of current.As long as the wires are adequate for the amps they are grounding they are fine.&nbsp; Stacking two terminals won&#039;t hurt anything either.&nbsp; Terminals are generally tinned or plated copper and are better conductors than the sheet metal of the car.&nbsp; What a bad ground will do is cause a difference in ground potential between the HU and the amps.&nbsp; On inexpensive components the signal is not isolated from ground and the ground plane will try to equalize through the RCA.&nbsp; This is a ground loop and is the most common source of alt noise.&nbsp; A distro block looks nicer but is not really needed.&nbsp; Two terminals and a bolt will work fine.Funny.&nbsp; I&#039;ve never seen shielded power wire nor would I waste the fortune it would surely cost were it available.&nbsp; My Audiopipe 1/0 works just fine.</blockquote>

[QUOTE="helotaxi, post: 414625, member: 550915"] The power wire is DC. If it is affecting your AC signal, then you have problems with your DC not being DC. It can't bring it in if it can't get rid of it. It won't cause noise but it might keep the amp from making proper power or cause it to clip earlier than it would with a good supply of current. As long as the wires are adequate for the amps they are grounding they are fine. Stacking two terminals won't hurt anything either. Terminals are generally tinned or plated copper and are better conductors than the sheet metal of the car. What a bad ground will do is cause a difference in ground potential between the HU and the amps. On inexpensive components the signal is not isolated from ground and the ground plane will try to equalize through the RCA. This is a ground loop and is the most common source of alt noise. A distro block looks nicer but is not really needed. Two terminals and a bolt will work fine.Funny. I've never seen shielded power wire nor would I waste the fortune it would surely cost were it available. My Audiopipe 1/0 works just fine. [/QUOTE]

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