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Reload Thread: Which amp will need more power from my alt and battery?

  1. 01-04-2013 #1
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    Which amp will need more power from my alt and battery?

    MB Quart REF4.50 wired 2 ohms: 100 watts x 4 chan.


    MBQUART FX4.70 wired 4 ohms: 70 watts x 4 chan.


    Either will be connected to (4)Naxa NX-774
    120 RMS Watt Each 6.5 Inch 2-Way Coaxial Speakers

    Just for comparison reasons lets say the gain is set the same on both



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  3. 01-04-2013 #2
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    Re: Which amp will need more power from my alt and battery?

    Probably about the same...look at the fuses on the amps and see which one has bigger fuses. .



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  4. 01-04-2013 #3
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    Re: Which amp will need more power from my alt and battery?

    100 watts x 4 will push them harder but not blow them correct?



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  5. 01-04-2013 #4
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    Re: Which amp will need more power from my alt and battery?

    Blowing a speaker can be caused by more than just to much power. Clipping is probably the number 1 reason speakers/subs blow.



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  6. 01-04-2013 #5
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    Re: Which amp will need more power from my alt and battery?

    If you only going to use the amp on those speakers...I would go with the 70x4..
    If your going to do 2 ohm stereo. ...same amp...it will put out more power and you got 2 channels left over.



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  7. 01-05-2013 #6
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    Re: Which amp will need more power from my alt and battery?

    Dunno how to take a vote or I would but, what would you do?
    REF4.50 2 ohms 100 watts x 4

    FX4.70 4 ohms 70 watts x 4



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  8. 01-05-2013 #7
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    Re: Which amp will need more power from my alt and battery?

    New Cadence Q3000 Ultradrive Power Amplifier 2 Channel Amp Ultra Drive | eBay

    buy this, its an american made amp nice quality and really a steal thank me later



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  9. 01-05-2013 #8
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    Re: Which amp will need more power from my alt and battery?

    Quote Originally Posted by mclerico83 View Post
    New Cadence Q3000 Ultradrive Power Amplifier 2 Channel Amp Ultra Drive | eBay

    buy this, its an american made amp nice quality and really a steal thank me later
    It says 4 ohm: 100W x 2 ,I have 4 speakers can I wire them in parallel with 2 in each door ? 100W x 4
    Last edited by wesburnsco86; 01-05-2013 at 05:51 AM.



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  10. 01-05-2013 #9
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    Re: Which amp will need more power from my alt and battery?

    200x2...but yes...each speaker will see 100...



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  11. 01-05-2013 #10
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    Re: Which amp will need more power from my alt and battery?

    I believe I will do that, can someone link or post a parallel diagram that would work with 2 speakers in each door?



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  12. 01-05-2013 #11
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    Re: Which amp will need more power from my alt and battery?

    Positive to positive. ..negative to negative. ..take those 2 wires to your amp.



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  13. 01-07-2013 #12
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    Re: Which amp will need more power from my alt and battery?

    Quote Originally Posted by mclerico83 View Post
    New Cadence Q3000 Ultradrive Power Amplifier 2 Channel Amp Ultra Drive | eBay

    buy this, its an american made amp nice quality and really a steal thank me later
    I bought this amp and plan on using knu 4 ga kit
    Last edited by wesburnsco86; 01-07-2013 at 03:47 AM.



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  14. 01-07-2013 #13
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    Re: Which amp will need more power from my alt and battery?

    Quote Originally Posted by wesburnsco86 View Post
    I bought this amp and plan on using knu 4 ga kit
    you have a really sweet amp man and that will work perfectly



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