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<blockquote data-quote="RobGMN" data-source="post: 8922474" data-attributes="member: 683408">Try these things:1. Disconnect the speaker wires form the amp. Assuming it&#039;s just two. Hold one wire to the the negative end of an AA battery. Very quickly tap the other wire to the positive end. Make sure both subs move in or out together when you do so. You&#039;ll hear a slight &quot;thump&quot; with each tap.2. Set your amp gain to 100%, crossover to ~80Hx, bass boost to off, infrasonic (&quot;subsonic&quot;) filter to off.3. Go into your Kenwood settings, and check that all EQ is flat, crossover for sub output (if one exists) is set to as high as it will go, and sub output (if adjustable) is at around 90%Play a track that has good bass, but not just a one-note drone, or a higher-pitched &quot;false bass&quot; (like 60Hz that makes smaller systems sound good). I&#039;m not into rap/hip-hop/dance, but if you Google &quot;best rap (hip-hip, dance, etc) song to evaluate subwoofer&quot;, you&#039;ll get some good suggestions.Start with volume low, and increase slowly just until you start getting some solid bass fill. Then, dial it back down.Let us know what happens, and we can go from there. Also, give us an idea of what your head unit software is capable of, regarding sub management.4 gauge wire is fine, unless it&#039;s CCA, then 2 gauge would be recommended.Edit: Any idea how those subs are wired? I&#039;m now wondering if there may have been a goof in wiring and the dual voice coils aren&#039;t working in opposition on one or both subs (along with maybe being out of phase with each other).</blockquote>

[QUOTE="RobGMN, post: 8922474, member: 683408"] Try these things: 1. Disconnect the speaker wires form the amp. Assuming it's just two. Hold one wire to the the negative end of an AA battery. Very quickly tap the other wire to the positive end. Make sure both subs move in or out together when you do so. You'll hear a slight "thump" with each tap. 2. Set your amp gain to 100%, crossover to ~80Hx, bass boost to off, infrasonic ("subsonic") filter to off. 3. Go into your Kenwood settings, and check that all EQ is flat, crossover for sub output (if one exists) is set to as high as it will go, and sub output (if adjustable) is at around 90% Play a track that has good bass, but not just a one-note drone, or a higher-pitched "false bass" (like 60Hz that makes smaller systems sound good). I'm not into rap/hip-hop/dance, but if you Google "best rap (hip-hip, dance, etc) song to evaluate subwoofer", you'll get some good suggestions. Start with volume low, and increase slowly just until you start getting some solid bass fill. Then, dial it back down. Let us know what happens, and we can go from there. Also, give us an idea of what your head unit software is capable of, regarding sub management. 4 gauge wire is fine, unless it's CCA, then 2 gauge would be recommended. Edit: Any idea how those subs are wired? I'm now wondering if there may have been a goof in wiring and the dual voice coils aren't working in opposition on one or both subs (along with maybe being out of phase with each other). [/QUOTE]

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