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    A.C.Sanchez's Avatar
    A.C.Sanchez is offline Junior Member



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    Help - prob with new system

    I just installed alpine CDA-7897, Infinity Kappa Components, a 5 channel amp, and 2 subs.

    Problem - the HU volume goes up to 32, but when i go up to volume level 23, the sound cuts out.

    Now, during the install my surgeon of a brother put a screwdriver through one of the 6.5" components, so I had to leave one of the factory BOSE speakers installed. (this is in a 97 Nissan Maxima).

    My amp is giving each of the 4 speaker channels 40 watts, with 120 to the subs.

    Could it be that the p.o.s. factory speaker cannot handle that wattage, so the entire system is cutting out at that volume, or do I have something screwed up?

    Everything works and sounds fantastic upto and including volume level 22, but at 23 it dies.

    Anyone have an explaination?

    Thanks for any help anybody has.

    Kevin.







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    maylar's Avatar
    maylar is offline Electrical Weenie



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    Most likely the amp's sub channel is shutting down. Turn the gain of the 5th channel down and see what happens.



    dave
    ----------
    1999 Buick Park Ave Ultra
    Head Unit: JVC KWHDR720
    EQ: Audiocontrol EQL
    Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
    Sub Stage: Boston G3 10", 0.5 cu ft sealed
    Amp: PPI Phantom 900.4
    Rear Fill: Boston SE953 6X9's

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    A.C.Sanchez's Avatar
    A.C.Sanchez is offline Junior Member

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    Originally posted by maylar
    Most likely the amp's sub channel is shutting down. Turn the gain of the 5th channel down and see what happens.
    really?

    I have the Sub option on the H/U up all the way at +15, and the sub gain turned up about 3/4s of the way.

    That could be causing the system to shut down? how?




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    maylar's Avatar
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    Originally posted by A.C.Sanchez
    really?

    I have the Sub option on the H/U up all the way at +15, and the sub gain turned up about 3/4s of the way.

    That could be causing the system to shut down? how?
    Typically an amp shuts down when it's overloaded. This could be due to too low an impedance in your speakers, like running 2 ohm speakers on an amp that'll only handle 4 ohms or higher. It could also be from excessive distortion from overdriving the inputs. Turning down the gain will lower the power and the amp will usually be happier. Sound quality may improve too.



    dave
    ----------
    1999 Buick Park Ave Ultra
    Head Unit: JVC KWHDR720
    EQ: Audiocontrol EQL
    Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
    Sub Stage: Boston G3 10", 0.5 cu ft sealed
    Amp: PPI Phantom 900.4
    Rear Fill: Boston SE953 6X9's

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