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Eric Statham Posted on Jun 05, 2011
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How can I wire 2- 4ohm CDT 6.5" 2-way component speakers & 2- 2ohm CDT 6.5" 2-way component speakers into a 2-channel amplifier that is stable down to 2ohms, or will I need to invest in a 4-channel amp that is stable at a lower impedance, and if so, how do wire it to the 4-channel? Thanks, Eric

  • 2 more comments 
  • Eric Statham
    Eric Statham Jun 05, 2011

    The speakers come with crossovers, high-pass for tweeter, low-pass for mids. A total of 4 crossovers. What about wiring in series?

  • Eric Statham
    Eric Statham Jun 05, 2011

    I knew a crossover would affect impedance load(had been googling this question all night), finally decided to pay. The question is how to run the wires to them, even with crossover, I need WIRING DIAGRAM, please. Thanks

  • Eric Statham
    Eric Statham Jun 05, 2011

    My head unit has 3 rca outputs, sub, front & rear. Also, I'm kind of not following you on the 4-channel amp with 4 inputs, are you saying some amps have 2 different sets of RCA inputs, in other words connect front rca outputs from h.u. to one of the imputs of the amp, & the rear output from h.u. to other rca imputs on amp? Thanks so much for your help, I truly appreciate it.
    Eric

  • Eric Statham
    Eric Statham Jun 05, 2011

    My request for wiring diagrams, was intended for the first reply I received, which was very vague, and actually uninformative at all. Jturcotte helped tremendously, and I truly appreciate it. Definately made it worth the money, just hoped there was a solution with my current 2-channel amp, that would not affect sound quality or overload the amp. Thanks,
    Eric

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2 Answers

Jeffrey Turcotte

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  • Posted on Jun 05, 2011
Jeffrey Turcotte
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Hi, I doubt you will get good sound from full range speakers wired in series. This works OK for some subs, but not for the rest of the spectrum. What I recommend is to wire in the 2-ohm speakers to this amp, and either leave the other speakers without additional amplification or to get another 2-channel amp with 4-ohm stability for the 4-ohm speakers. If you don't have room for another amp, then get a 4-channel amp with a 2-ohm spec. The wiring of the 4-channel amp depends on the number of inputs. If it has 4 inputs, the wiring is straightforward. If it has only 2 inputs, use the preamp outputs from the head unit or just the front speaker outputs (if the head unit has no preamp outputs) to drive the amp. In the latter case, you will lose fade control unless it is included in the amp. Please let me know if you have more questions, and thanks for using FixYa.

  • Jeffrey Turcotte
    Jeffrey Turcotte Jun 05, 2011

    Yes, you could mate your head unit with an amp like this one: http://www.onlinecarstereo.com/CarAudio/...

    Hook your front and rear head unit outputs to the amp and then from the amp to speakers.
    The 2 ohm speakers will draw more power, so think about whether you want those in front or rear. You can then control fade from the head unit and leave the amp gain at a set value. Do you still need a wiring diagram, or is this clear?

    Crossover impact on impedance depends on the internals of the individual speaker system. I don't understand your crossovers. There is no need in my opinion for 2 crossover frequencies on a 2-way speaker. I would not mess with the internals. The overall impedance of the speaker should not change much with the crossover setting, as these are just filters applied to the component speakers of the 2-way system.


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Morne Olivier

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  • Posted on Jun 05, 2011
Morne Olivier
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Hi there. You will be able to use your current amplifier, but you will need to purchase a cross-over unit to vary the impedance. Hope this helps

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