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    Which amp to run with this HU?

    I've got an Alpine 7854 HU. Unfortunately it has only one preamp out. I need to power four door speakers and a 10" sub with HP and LP capability.

    Am I correct in assuming that because the RCA preamp out offers no fader control, I'm better off buying a 4-channel amp (as opposed to 5-ch) and running the door speakers in 2-ohm mode (front & rear connected) and the sub as a bridged 4-ohm speaker?

    Thanks,
    Jon

    Alpine 7854 CD Receiver
    (amp inserted here)
    4 Polk DX7s 6x8" (4-ohm)
    1 Polk GNX104 10" sw (4-ohm)







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    Re: Which amp to run with this HU?

    u have a CDM-7854? i have this Head Unit. And im running 2 amps. I had to use Y splitters to split my set of RCA's into 2. so i could hook up both my amps. it doesnt matter what ohm load u run ur speakers. each speaker will use a channel. I would use a 5 channel amp if u dont plan upgrading later. but if u wana upgrade itd be better to have a 4 channel amp. Then an amp right now that could power ur sub very nicely and be able to power a new sub that would get that would need more watts.



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    Re: Which amp to run with this HU?

    mtx has some nice 5 channels that look to be right up your ally



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    Re: Which amp to run with this HU?

    Thanks guys...

    Yeah, I'm gonna buy either a Hifonics, Alpine, or MTX 4-channel amp tomorrow. Basically I need to research THD specs for running the mains 2-ohm. Nice to have some decisions made!

    Cheers




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    Re: Which amp to run with this HU?

    most five channel amps have an internal crossover and only take one input. the JL 500/5 has one of the best internal crossovers that i have used yet.




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    Re: Which amp to run with this HU?

    get a 5 channel unless u got it figured how you plan to use 4



    Sony Mobile ES C-90 Audison Bit-One
    Audison LRx 3.1 MT
    Hertz HSK 130
    Mid Bass ?
    DB Drive K5 15
    Kinetik 1400HC
    avital 2200 alarm
    dynamat extreme

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