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    boostdfoci's Avatar
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    Alpine PRE_h090

    Has anyone used the Alpine PRE-H090 noise cancellation device? I have a CDA-9857/PXA-H701/Eclipse XA-4000/Eclipse XA-1000. Iget some hiss and alternator noise. Does this unit work as the old soungate item and cancel noise in the system?







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    James Bang's Avatar
    James Bang is offline Hand/Ear Coordination



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    Re: Alpine PRE_h090

    i've heard of people w/ the h701 having noise problems, but when they change from analog to digital the noise goes away. but in your case, i'm guessing you cannot run digital w/ the equipment you have. so maybe you can try to tinker w/ your grounds. or reroute your RCAs.




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    Re: Alpine PRE_h090

    The 701 is in the trunk like 2ft from the amp so the RCAs are very short, and I am using high quality monster cable RCA's. The Ai-net is ran down the center of the car and the power wire down the passenger side. The speaker wires and power wire only cross at 90 degree angles and do nor run parellel to each other, do not get it!




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    adam71 is offline P9 = Ultimate SQ



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    Re: Alpine PRE_h090

    Maybe try grounding everything (all components) in your system to 1 central grounding point?? That includes your head unit, processor and amps all to the same place. I had problems a long way back and that solved my problem. Since then I've always done it that way.



    Source Unit: Pioneer P9 combo
    Tweeters: CDT DRT-25 Silk
    Mids: CDT ES-5 (5.25")
    Midbass: CDT M6 (6.5")
    Subs: Pioneer TS-W12PRS
    Mid & Tweet amp: Pioneer PRS-X340
    Midbass Amp: Pioneer PRS-X720
    Sub Amp: Pioneer PRS-X720

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