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Amps and Sub Question

Old 08-15-2007, 05:45 PM
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Amps and Sub Question

I am about to order the following equipment for my sound system but before I do I have a few questions about amps for it.

Equipment:
Head Unit - Clarion MAX675VDII
Front Speakers - Rockford Fosgate Power T162S
Rear Speakers - Rockford Fosgate Power T1693C
Subwoofers - Rockford Fosgate Power T212D2 or T212D4

Well for my first question what is the difference between 2 and 4 ohms?

From what I gather 2ohms offers more power but sound quality is distorted and 4ohms offers less power but sound is less distorted? what would you recommend 2 or 4 ohms?

For my second question what amps from RF would you recommend to power this system to get the best performance? also would you recommend one for the speakers and one for the sub? one for the whole system or one just for the subs?
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Old 08-15-2007, 05:58 PM
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Is the person you are about to order this from not able to answer this? If not perhaps you should be looking to somewhere else that can answer this for you.
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Old 08-15-2007, 06:04 PM
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There is no difference between the sub types aside from how they will utilize the power from an amplifier. So the choice of sub will depend solely on the amplifier chosen.
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Old 08-15-2007, 10:42 PM
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difference between 2 and 4 ohms is just the load the amplifier will see. 2 ohms is less resistance and all other things being equal, the amp will deliver more power to a speaker with a lower impedance (sometimes 2x the power as is the case with most RF amps).

Does 2 ohm speakers sound worse than 4 ohm speakers? I don't think so, I have 2ohm Infinity's in my car now, mainly because they utilize my amps full output (100 watts vs. 50 watts for 2 vs. 4 ohms). I have had both versions of the same speakers in 4 and 2 ohm and they both sound equally good.

For those speakers that you have, you should use amps that maximize their output potential. In this case, 100 watts and 110 watts respectively...therefore, a 4 channel amp delivering 100 watts rms x 4 would be perfect. The RF power t-600-4 delivers 400 watts rms into 4 channels at 4ohms.

For your sub(s), they require 600 watts rms. the only thing you have to decide is; what voice coil configuration you want. If you go with a dual 2 ohm vc, then you can get an amp that delivers maximum power into a 1 ohm load, as you can wire the vc parallel for a 1 ohm load. This is the cheaper route o take as 1 ohm sub amps that deliver x amount of power are usually cheaper than 4ohm amps that deliver the same power. RF t-500-1 bd would work very well as they are usually under rated and will probably deliver the rms power that the sub requires. If you're using more than 1 sub, look at a 1000 watt amp. Again it all depends on the route you decide on with your voice coils. If you're worried about SQ, some swear that 1 ohm subs sound bad, others like me, don't hear a difference. Mine are 1 ohm and sound tight, clean, and loud. Hope that helps.
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