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<blockquote data-quote="ThxOne" data-source="post: 8922485" data-attributes="member: 675210">New Kenwood head unit? Ahhh The DMX 709S!! I have owned this head unit!!Doors running off the factory BOSE amp? How so?How did they connect that amp to the new Kenwood head unit? Are you sure the new head unit isn&#039;t powering the doors and they bypassed the BOSE amp? If so, I can see why the door speaker blew. High volume (into clipping) still low enough volume the sub amp isn&#039;t really pushing its power.If the subwoofer amp is set up correctly it WILL pound those subs. GET AN AMP FOR THE DOORS ASAP. So they will keep up with the subs.... now... the subs...It doesn&#039;t hurt to pull the subs and verify they are wired to 2ohm per sub - 1ohm at the amp. Have a multimeter? Measure the ohm load at the box&#039;s terminals.Turn the sub amps crossover ALL the way up and the Subsonic OFF!!! Use the crossover in the Kenwood for the subwoofer output. 80hz is fine for a starting point. This IS an eXcelon you can usually max the head unit volume all the way without distortion through the RCA outputs. There is a 13 band EQ in most Kenwood head units as well as several sound shaping features. There IS a subwoofer level control in the Kenwood head unit. At volume 28 the RCA&#039;s are putting out way less than 2v If I recall. This would certainly explain low sub output.Make sure the sub amp is connected to the sub out on the head unit.Make sure (VERIFY) 1ohm at the amp (2ohms per sub) (4-4=2 + 4-4=2 --&gt; =1ohm)If the subs are set up correctly they should be pounding hard at near full volume on the head unit. At this point neither the BOSE amp or the Kenwood internal amp will be able to keep up and WILL BE OUTPUTTING DISTORTION to the door speakers, which is the #1 killer of speakers. (Clipping/Distortion)</blockquote>

[QUOTE="ThxOne, post: 8922485, member: 675210"] New Kenwood head unit? Ahhh The DMX 709S!! I have owned this head unit!! Doors running off the factory BOSE amp? How so? How did they connect that amp to the new Kenwood head unit? Are you sure the new head unit isn't powering the doors and they bypassed the BOSE amp? If so, I can see why the door speaker blew. High volume (into clipping) still low enough volume the sub amp isn't really pushing its power. If the subwoofer amp is set up correctly it WILL pound those subs. GET AN AMP FOR THE DOORS ASAP. So they will keep up with the subs.... now... the subs... It doesn't hurt to pull the subs and verify they are wired to 2ohm per sub - 1ohm at the amp. Have a multimeter? Measure the ohm load at the box's terminals. Turn the sub amps crossover ALL the way up and the Subsonic OFF!!! Use the crossover in the Kenwood for the subwoofer output. 80hz is fine for a starting point. This IS an eXcelon you can usually max the head unit volume all the way without distortion through the RCA outputs. There is a 13 band EQ in most Kenwood head units as well as several sound shaping features. There IS a subwoofer level control in the Kenwood head unit. At volume 28 the RCA's are putting out way less than 2v If I recall. This would certainly explain low sub output. Make sure the sub amp is connected to the sub out on the head unit. Make sure (VERIFY) 1ohm at the amp (2ohms per sub) (4-4=2 + 4-4=2 --> =1ohm) If the subs are set up correctly they should be pounding hard at near full volume on the head unit. At this point neither the BOSE amp or the Kenwood internal amp will be able to keep up and WILL BE OUTPUTTING DISTORTION to the door speakers, which is the #1 killer of speakers. (Clipping/Distortion) [/QUOTE]

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