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<blockquote data-quote="n2audio" data-source="post: 8372534" data-attributes="member: 540940">If they&#039;re out of phase they would still measure at 2 ohms.&nbsp; But when one channel pushes the sub out the other would be pulling in giving you a net displacement of zero and very little output.Since your amp has two phase controls you can start there (instead of tracing wires).&nbsp; A 180 degree difference in phase is the same as reversing a -/+ speaker connection.Turn the gain down before you check them -- at least 12 o&#039;clock, if not lower.You can play music while you&#039;re doing this, but do it at low volume.Most likely, you&#039;re going to want both phase controls at zero.&nbsp; Start there.&nbsp; If one is at zero and one is at 180 - there&#039;s your problem.&nbsp; Set them both to zero and you should get a huge improvement.If they ARE both at zero (or 180) make them opposite.&nbsp; If that helps you have one of the +/-&#039;s backwards at the amp.&nbsp; You can either leave it like that, or fix the wiring mistake and set both phase controls to zero.</blockquote>

[QUOTE="n2audio, post: 8372534, member: 540940"] If they're out of phase they would still measure at 2 ohms. But when one channel pushes the sub out the other would be pulling in giving you a net displacement of zero and very little output. Since your amp has two phase controls you can start there (instead of tracing wires). A 180 degree difference in phase is the same as reversing a -/+ speaker connection. Turn the gain down before you check them -- at least 12 o'clock, if not lower. You can play music while you're doing this, but do it at low volume. Most likely, you're going to want both phase controls at zero. Start there. If one is at zero and one is at 180 - there's your problem. Set them both to zero and you should get a huge improvement. If they ARE both at zero (or 180) make them opposite. If that helps you have one of the +/-'s backwards at the amp. You can either leave it like that, or fix the wiring mistake and set both phase controls to zero. [/QUOTE]

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