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<blockquote data-quote="JLCivic" data-source="post: 230175" data-attributes="member: 547424">That sounds like a nice way of saying the sub pre out may be a little weak.&nbsp; Very nice pre outs would help with any deck geared toward sq.&nbsp; A guy on another forum tested his 7897.&nbsp; These were his results.the front/rear pre outs clipped at 32 out of 35(they did much better than the alpine that the local shop tested)at 31(1 click below clipping), they did 3.9 voltsThe sub out never clipped, but at full volume(and bass cranked on the deck), it did 3.5 volts.Now, the issue was at volume 31(max volume without clipping on the front/rear pre outs), the sub pre out voltage was 1.7 volts.That last part of his testing may account for the numerous posts I have seen on many forums complaining of a lack of bass with the newer alpines.I just thought his test was worth mentioning.&nbsp; Your sub pre out may just be low.&nbsp; I doubt the pre outs on the 9815 are any different.</blockquote>

[QUOTE="JLCivic, post: 230175, member: 547424"] That sounds like a nice way of saying the sub pre out may be a little weak. Very nice pre outs would help with any deck geared toward sq. A guy on another forum tested his 7897. These were his results. the front/rear pre outs clipped at 32 out of 35(they did much better than the alpine that the local shop tested) at 31(1 click below clipping), they did 3.9 volts The sub out never clipped, but at full volume(and bass cranked on the deck), it did 3.5 volts. Now, the issue was at volume 31(max volume without clipping on the front/rear pre outs), the sub pre out voltage was 1.7 volts. That last part of his testing may account for the numerous posts I have seen on many forums complaining of a lack of bass with the newer alpines. I just thought his test was worth mentioning. Your sub pre out may just be low. I doubt the pre outs on the 9815 are any different. [/QUOTE]

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