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post #1 of 15 (permalink) Old 07-24-2009, 09:11 PM Thread Starter
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Quick Question

Ohms? What are they? Whats the difference between 2 and 4? Also how can you change your amp from 2 to 4?
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post #2 of 15 (permalink) Old 07-24-2009, 09:24 PM
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Ohm - Wikipedia, the free encyclopedia

This is on a G35 forum:

The ohm rating refers to the load of resistance on the speaker/amplifier. The higher the ohm rating on the speaker, the more power you will need to make it loud (more resistance at the speaker = more power to run it). If the speaker resistance is too low (i.e. 2ohm or 1ohm) your amplifier will have less resistance, hence more power being delivered to the speaker.

NOW TO REALITY:
have 2 ohm speakers isn't a big deal, as long as your amplifier can deliver power at 2 ohms (many of the decent or more powerful amplifiers can sustain 2 ohm loads, but you need to check). Don't think that any amplifier will do it. You may blow the fuse (instantly), or worse, the amp will heat up and blow (most likely more damage).

So, if you replace the factory 2 ohm speakers with 4 ohm speakers, you are going to have 1/2 the sound output from those speakers (twice the resistance = 1/2 the sound) - not a very good idea. The reason infiniti has this setup is to get the most out of the speakers with minimal power (saves them money).
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post #3 of 15 (permalink) Old 07-24-2009, 09:25 PM
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ohms is the resistance of flow for electricity. you cant "change" the amp from 2 to 4. its capable of powering in either way. its the way you connect the subwoofer/s up to the amp. it allllll depends on wiring.
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post #4 of 15 (permalink) Old 07-24-2009, 09:45 PM Thread Starter
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ok thanks i was thinking out hooking these up...

Hifonics ZXi 6.5C (zxi65c) 6-1/2" Component Systems Car Speakers Car Audio Car Audio, Video, & GPS Navigation - Sonic Electronix

What can i use to power them amp wise?

Also i have an 800 peek watt amp 2 channel sitting around that was powering my subs. I think its 400 watt rms could that power them or too much?
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post #5 of 15 (permalink) Old 07-24-2009, 09:50 PM
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it'd most likely power them. its probably 400rms at two ohm.
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post #6 of 15 (permalink) Old 07-24-2009, 10:00 PM Thread Starter
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it wont blow them? im scared it might be too much but then again idk
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post #7 of 15 (permalink) Old 07-24-2009, 10:01 PM
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oh wait you're talking about speakers...good lord 400 watts is way too much to put through speakers. i thought you meant subs.
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post #8 of 15 (permalink) Old 07-24-2009, 10:03 PM
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it might be ok...you'd just have to turn the gain waaaaaay down
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post #9 of 15 (permalink) Old 07-25-2009, 08:15 AM Thread Starter
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haha ok yea i thought it would be too much i was just seeing if i could use something i already had insted of buying something else
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post #10 of 15 (permalink) Old 07-25-2009, 08:19 AM Thread Starter
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And another thing... are those good speakers? i mean i saw 1000 watt max and i thought that was alot for speakers. Also, would they run good with my pioner AVH-P4100DVD?
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