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4 and 2 ohm speakers

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Old Oct 17, 2005 | 12:53 PM
  #1  
d_dub3030's Avatar
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From: Pollock Pines, CA
Car Info: 98 Legacy Outback limited
Question 4 and 2 ohm speakers

ok so i have an amp its a 4 channel. it says it has rms 4 ohm 65 wattsx4channel. and it has 2 ohm 85 watt x 4 channell. I dont see anything on the amp that lets me change the ohms. am i right that the amp will just put out what it needs to, or however many amps my speakers demand.

I have some new speakers some Infinity Reference 6000cs 6-1/2" Component Speaker System that are 4 ohms.

I also got some Infinity KAPPA 62.7i 6-1/2" 2-Way Loudspeaker. which are 2 ohms.

now my question is if i put each one of these one a seperate channel on the amp will everything be ok. or do i need to raise or lower one of the ohms going to the speaker?
Old Oct 17, 2005 | 05:00 PM
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There is nothing that needs to be adjusted on the speakers or the amp. The amp simply makes more power (watts) into a 2 ohm load than a 4 ohm load; to understand why you can look into Ohm's Law. If you hook a 2 ohm speaker to it, it is capable of producing 85 watts of power, with a 4 ohm speaker it is reduced to 65 watts. Most amps have no problem with mixed loads (I am assuming you mean to hook one matched pair to the front channels and one matched pair to the rear). Depending on the efficiency of the speakers it may try to drive the 2 ohm speakers a little louder which is easily adjusted by balancing the gain between the front and rear or by adjusting the fader.
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