Car Audio Central - Ultimate Car Audio Forum and Community

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[TD="colspan: 4"]I don't really understand Ohms very much. Over the last year or so, I have bought the following car audio parts on sale (mostly from best Buy deals-of-the-day) for a 2013 Ford Focus ST I will be getting within the next couple of weeks or so.[/TD]
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[TD]Deck[/TD]
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[TD]Sony CDXGT56UI - 52W x 4 Apple® iPod®-/Satellite Radio-Ready In-Dash CD Deck[/TD]
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[TD]Amp[/TD]
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[TD]Alpine MRX-V70 - MRX Series 710W Class D Digital Multichannel Amplifier[/TD]
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[TD]Subwoofer[/TD]
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[TD]Pioneer TS-W309D2 - 12" Dual-Voice-Coil 2-Ohm Subwoofer[/TD]
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[TD="colspan: 2"]Door Speakers (2 sets)[/TD]
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[TD]Polk Audio DXI650 - 6-1/2" Coaxial Loudspeakers with Poly-Mica Cones (Pair)[/TD]
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[TD]Amp Control[/TD]
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[TD]Alpine RUX-KNOB - Remote Subwoofer Control Knob for Select Alpine Amplifiers - Black[/TD]
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[TD="colspan: 2"]Subwoofer Box[/TD]
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[TD]Metra TCBXP-112 - 12" Single Ported Subwoofer Enclosure[/TD]
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[TD="colspan: 4"]I plan on having Best Buy install these parts in the car, but I am not 100% sure that they would know the best way to hook the speakers up to the amp correctly.[/TD]
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[TD="colspan: 4"]Is it better to hook everything up at 4 ohms, or hook the sub up at 2 ohms and the 4 door speakers up at 4 ohms, etc. ?[/TD]
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[TD="colspan: 4"]I care more about the quality of the music than I do about the volume level.[/TD]
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[TD="colspan: 4"]What does anyone recommend as the best way to hook everything up?[/TD]
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[TD="colspan: 4"]Any suggestions would be much appreciated.[/TD]
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[TD]Thanks :) [/TD]
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If it was my system, I'd buy a 4 channel amp to drive those Polk door speakers front and rear. about 70% of your audio comes from those speakers. With just a sub amp, you'll drown them out since head units only supply about 10 or 12 watts per channel RMS (that 52 watt rating is nonsense. that's peak, during a lightning strike. a head unit's amp is IC-driven, and lacks a transformer so it is incapable of producing very much clean power.)

That said, I'd go with a ported box for the Pioneer sub, and the rest should be pretty straight forward. Tune the port on the box to 34Hz, and it should sound deep and tight and clean. Cross the sub over at 50-60Hz, 18dB slope. Set the door speakers to a high-pass filter crossover point of 100-120Hz, 12dB slope (Q)
the roll-off will fill the gap between the XO points.

X2 what GlassWolf said.

Maybe find another install shop in your area. BB doesn't have the best reputation in most places. But you could get lucky.

i'm new on the forum and can't figure how to post in classifieds....your the only person I can contact,,,,could you help me post? bloudie

hello friends..........

I am rock and I am new for this forum. i like this forum.