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<blockquote data-quote="keep_hope_alive" data-source="post: 7341518" data-attributes="member: 576029">you can wire 8 ohm speakers no problem and you won&#039;t get distortion.&nbsp; output will be reduced and distortion will decrease, damping factor goes up, etc.&nbsp; nothing wrong with 8 ohm speakers.&nbsp; since you can get them to work by disconnecting one high level input wire, it&#039;s not an impedance issue.somewhere, you&#039;re shorting signal to ground.&nbsp; maybe the internals of the amp are shorting the head unit output to ground or connecting the negative speaker wires together.&nbsp; most head units don&#039;t like having grounds tied together and will distort as you describe if that happens.&nbsp; by connecting only one wire, the HU output isn&#039;t shorted and both channels get a signal.or maybe you have positive and negative mixed up on the front outputs, and the amp is tying positive to negative which the HU doesn&#039;t like.&nbsp; that would explain why you can move the problem.you can use a DMM to measure resistance between amp high level input pins and chassis with everything off. none of the pins should be internally connected at a low resistance, i suspect the left and right negative inputs are connected.a decent line output converter could solve this issue.FYI - it&#039;s not safe to play with connections while the equipment is on. it sounds like you are touching and cutting wires while the HU is running.&nbsp; that usually results in damage.</blockquote>

[QUOTE="keep_hope_alive, post: 7341518, member: 576029"] you can wire 8 ohm speakers no problem and you won't get distortion. output will be reduced and distortion will decrease, damping factor goes up, etc. nothing wrong with 8 ohm speakers. since you can get them to work by disconnecting one high level input wire, it's not an impedance issue. somewhere, you're shorting signal to ground. maybe the internals of the amp are shorting the head unit output to ground or connecting the negative speaker wires together. most head units don't like having grounds tied together and will distort as you describe if that happens. by connecting only one wire, the HU output isn't shorted and both channels get a signal. or maybe you have positive and negative mixed up on the front outputs, and the amp is tying positive to negative which the HU doesn't like. that would explain why you can move the problem. you can use a DMM to measure resistance between amp high level input pins and chassis with everything off. none of the pins should be internally connected at a low resistance, i suspect the left and right negative inputs are connected. a decent line output converter could solve this issue. FYI - it's not safe to play with connections while the equipment is on. it sounds like you are touching and cutting wires while the HU is running. that usually results in damage. [/QUOTE]

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