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<blockquote data-quote="Jeepskate" data-source="post: 555556" data-attributes="member: 556197"><p>Okay, this one has got me stumped. I had my system setup with a single 5-channel amp...fused 4 gauge from battery to distro block, 8 gauge to cap and amp &amp;amp; 8 gauge ground. Due to the vehicle being a Jeep (top &amp;amp; doors are off right now) and poor front speaker placement (have a full roll cage which prevents me from mounting the speakers in a better spot), I bridged the 4 &#039;normal&#039; channels to 2 for the rear and added a second higher wattage amp for the front (8 gauge power to the distro block &amp;amp; 8 gauge ground (same ground spot as the other amp). Here&#039;s where it starts to get weird: bring the system up to test &amp;amp; tweak and the 5 channel amp starts smoking on the input side (I suspect I had something set incorrectly for the inputs vs. bridging...I have a support call in to MTX since the manual was pretty thin on this info). As I&#039;m laying the amp back in place to go back up front to shut everything down, I hear a click like a fuse popping or circuit breaker tripping and the amp&#039;s power light goes out, but the other amp&#039;s light stays on (it&#039;s a slightly newer MTX and the light on it seems to also come on when there is a wiring fault). I disconnect everything except the power, ground &amp;amp; remote from the 5-channel amp, power back up, and neither amp nor my EQQ (also in back under the back seat) powers up and I notice that my cap isn&#039;t showing voltage anymore. Check the fuse at the battery &amp;amp; it&#039;s okay, stick a meter on the cables at the cap and get weird readings, so I take the cap out of the loop. Still no go. Meter both power feeds from the distro block with my ground and get about 11.8 volts. Try a known good old Alphsonik amp and it doesn&#039;t power up either...take it up to the battery and it powers on, so I then start checking my way down the power feed...check the cable from the battery to the fuse, okay, check the protected side of the fuse, okay, check the connector at the protected side of the fuse, okay, remove the cable from the distro block, nothing, but still reads 11.8 volts. I then made some quick &amp;amp; dirty &#039;pigtails&#039; for the MTX amps and tried them out and got the same results. There are no breaks in the 4 gauge cable and it passes through a grommeted hole in the firewall. I&#039;ve never heard of it or seen it before, but is it possible for a cable to build up resistance and in effect &#039;go bad&#039;? I have some old cables from a system from years gone by that I&#039;ll do some more testing with, but this one has definitely got me scratching my head.</p></blockquote><p></p>

[QUOTE="Jeepskate, post: 555556, member: 556197"] Okay, this one has got me stumped. I had my system setup with a single 5-channel amp...fused 4 gauge from battery to distro block, 8 gauge to cap and amp & 8 gauge ground. Due to the vehicle being a Jeep (top & doors are off right now) and poor front speaker placement (have a full roll cage which prevents me from mounting the speakers in a better spot), I bridged the 4 'normal' channels to 2 for the rear and added a second higher wattage amp for the front (8 gauge power to the distro block & 8 gauge ground (same ground spot as the other amp). Here's where it starts to get weird: bring the system up to test & tweak and the 5 channel amp starts smoking on the input side (I suspect I had something set incorrectly for the inputs vs. bridging...I have a support call in to MTX since the manual was pretty thin on this info). As I'm laying the amp back in place to go back up front to shut everything down, I hear a click like a fuse popping or circuit breaker tripping and the amp's power light goes out, but the other amp's light stays on (it's a slightly newer MTX and the light on it seems to also come on when there is a wiring fault). I disconnect everything except the power, ground & remote from the 5-channel amp, power back up, and neither amp nor my EQQ (also in back under the back seat) powers up and I notice that my cap isn't showing voltage anymore. Check the fuse at the battery & it's okay, stick a meter on the cables at the cap and get weird readings, so I take the cap out of the loop. Still no go. Meter both power feeds from the distro block with my ground and get about 11.8 volts. Try a known good old Alphsonik amp and it doesn't power up either...take it up to the battery and it powers on, so I then start checking my way down the power feed...check the cable from the battery to the fuse, okay, check the protected side of the fuse, okay, check the connector at the protected side of the fuse, okay, remove the cable from the distro block, nothing, but still reads 11.8 volts. I then made some quick & dirty 'pigtails' for the MTX amps and tried them out and got the same results. There are no breaks in the 4 gauge cable and it passes through a grommeted hole in the firewall. I've never heard of it or seen it before, but is it possible for a cable to build up resistance and in effect 'go bad'? I have some old cables from a system from years gone by that I'll do some more testing with, but this one has definitely got me scratching my head. [/QUOTE]

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