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<blockquote data-quote="zako" data-source="post: 8002668" data-attributes="member: 629735">This is a recipe for disaster. Let me tell you that the correct &quot;subwoofer level&quot; setting on the Kenwood decks before you set amplifier gain with DMM is 0dB. I have measured the Kenwood X994 (very similar to X993 through X996) deck voltage on subwoofer RCAs with a DMM. If the signal is at full tilt (0dB signal playing at full volume), then the AC voltage on the outs is close to 4V, as the specs claim, with the subwoofer level at 0. If you increase the subwoofer level, then there is a chance to clip the signal. The DMM tutorial is wrong is suggesting to max the subwoofer level on the head unit before proceeding with setting amplifier gain. This issue must be examined on case by case basis.Also on the +6dB on sub. This is a great receipt to over drive the amplifier and destroy subwoofer with a clipped signal. Set ALL settings to 0dB (no bass boost, sub level at 0, etc). Then set your gain with DMM. See what happens. Use 0dB test tone if you want to be conservative. Use -5dB tone if you feel adventurous. (I prefer -5dB as normal music hardly ever reaches 0dB, much less continuously).</blockquote>

[QUOTE="zako, post: 8002668, member: 629735"] This is a recipe for disaster. Let me tell you that the correct "subwoofer level" setting on the Kenwood decks before you set amplifier gain with DMM is 0dB. I have measured the Kenwood X994 (very similar to X993 through X996) deck voltage on subwoofer RCAs with a DMM. If the signal is at full tilt (0dB signal playing at full volume), then the AC voltage on the outs is close to 4V, as the specs claim, with the subwoofer level at 0. If you increase the subwoofer level, then there is a chance to clip the signal. The DMM tutorial is wrong is suggesting to max the subwoofer level on the head unit before proceeding with setting amplifier gain. This issue must be examined on case by case basis. Also on the +6dB on sub. This is a great receipt to over drive the amplifier and destroy subwoofer with a clipped signal. Set ALL settings to 0dB (no bass boost, sub level at 0, etc). Then set your gain with DMM. See what happens. Use 0dB test tone if you want to be conservative. Use -5dB tone if you feel adventurous. (I prefer -5dB as normal music hardly ever reaches 0dB, much less continuously). [/QUOTE]

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