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    Question about Alpine CDA 7998

    I bought one of these from Ebay and it's a really cool unit. I"m just curious what the metal box hanging from a green wire on the back is. The Wiring guide says it's some kind of outboard DC DC, but i don't know what that is.



    the system:

    Alpine IVA D310 head unit
    Alpine PXA H701 processor
    Epicenter 150 subwoofer processor
    (2) Alpine MRP F250 amps
    (2) Alpine SPX 137r component speakers
    (2) Alpine SPX 177 mid bass kits
    (2) Alpine SPX 177r component speakers
    JL 500/1 amplifier
    JL 12w6v2 subwoofer
    SPL 3 farad digital capacitor
    Optima red top battery
    200 Amp custom built alternator




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    frzninvt's Avatar
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    Re: Question about Alpine CDA 7998

    It is a DC to DC converter that optimizes the power fed into the unit.



    1995 Oriental Blue BMW 525i 5 Speed
    Stock Alpine System Actively Crossed Over & Amped w/CD 6-Disc Changer System with a/d/s 235is comps in front (3-Ways front, 2-Ways rear) sounds really good. All functions are displayed on the dash's check control display module.

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    Radioflyer97's Avatar
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    Re: Question about Alpine CDA 7998

    I am so glad i didn't cut it off...it was getting in the way.



    the system:

    Alpine IVA D310 head unit
    Alpine PXA H701 processor
    Epicenter 150 subwoofer processor
    (2) Alpine MRP F250 amps
    (2) Alpine SPX 137r component speakers
    (2) Alpine SPX 177 mid bass kits
    (2) Alpine SPX 177r component speakers
    JL 500/1 amplifier
    JL 12w6v2 subwoofer
    SPL 3 farad digital capacitor
    Optima red top battery
    200 Amp custom built alternator

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    Re: Question about Alpine CDA 7998

    I've got a 7998, also, and wanted to ask another question about it.

    When I start my car, is there any way to stop the deck from automatically folding out like it does, or does it have to do this everytime, regardless?

    For instance, sometimes if I just need to run up to the store for something quick, I'd like for the unit to just stay inside the dash, and not fold out while I make a quick run up to the store, etc. I'm basically just wanting to do this to extend the life of the motorized mechanism in the unit by it not being used every single time I start my car.




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    Re: Question about Alpine CDA 7998

    there is a manual way to get the head unit to go back in. but as far as a setting to where it doesnt' automatically come out, i dont' think there is one.



    the system:

    Alpine IVA D310 head unit
    Alpine PXA H701 processor
    Epicenter 150 subwoofer processor
    (2) Alpine MRP F250 amps
    (2) Alpine SPX 137r component speakers
    (2) Alpine SPX 177 mid bass kits
    (2) Alpine SPX 177r component speakers
    JL 500/1 amplifier
    JL 12w6v2 subwoofer
    SPL 3 farad digital capacitor
    Optima red top battery
    200 Amp custom built alternator

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    frzninvt's Avatar
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    Re: Question about Alpine CDA 7998

    Turn the power off on the unit before shutting off the car, when it retracts the next time you get in the car it should stay inside. However, it may open but not power up.

    Check the user manual, perhaps once the unit is initialized the first time it will open even though powered off, there must be a way to do it.



    1995 Oriental Blue BMW 525i 5 Speed
    Stock Alpine System Actively Crossed Over & Amped w/CD 6-Disc Changer System with a/d/s 235is comps in front (3-Ways front, 2-Ways rear) sounds really good. All functions are displayed on the dash's check control display module.

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    Re: Question about Alpine CDA 7998

    press and hold the eject for 3 sec, it will close all the way down and wont open till u press the open button, i just got one too and cant figure out how to run it in 2 way mode? is there a switch?



    RSX

    ACTIVE CDT ES-630 comps
    Phoenix Gold 100.4
    Sundown 1500D
    0/1 gauge setup
    Big 3
    12" IDMAX
    Active Alpine 7998
    Kinetik HC1400

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    frzninvt's Avatar
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    Re: Question about Alpine CDA 7998

    The 2-Way/3-Way switch in on the right hand side of the unit if facing you from the front.



    1995 Oriental Blue BMW 525i 5 Speed
    Stock Alpine System Actively Crossed Over & Amped w/CD 6-Disc Changer System with a/d/s 235is comps in front (3-Ways front, 2-Ways rear) sounds really good. All functions are displayed on the dash's check control display module.

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