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I'm looking at this JL Audio amp and it says that it will put out 150W x 2 @ 1.5 - 8 ohms.

http://www.acaraudio.com/product_info.p ... cts_id=183

Does this mean that a 2 ohm speaker will not be louder than a 4 ohm speaker?

Thank you for your help.

-Chad

No. Ohms have nothing to do with SPL (volume). It's refering to the way you wire your speakers.

you are correct.
the JL Audio slash series amplifiers use their RIPS technology which equates to a regulated power supply and regulated output stage, so regardless of input voltage, or load within operating specs, the amplifier will always put out exactly the same amount of power.
In your case, 150 watts RMS per channel.

If you want an amp that puts out more power at lower loads, go with JL's e-series amplifeirs, not the slash series.
the e series are cheaper, and have unregulated power supplies and output stages, like most entry level amplifiers.

Thanks alot Kiki