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<blockquote data-quote="Lasherž" data-source="post: 8711548" data-attributes="member: 679555">It&#039;s totally fine to have an amplifier of higher rated power than the speakers. You just have to be careful since you can&#039;t trust the clipping lights that might be included with the amp. Glancing over your amplifier it doesn&#039;t appear to have one of those lights anyways. Set your gains using 0db sine wave test tones like on kicker&#039;s website, a multimeter, and ohm&#039;s law. For example, for setting each channel to 45W you&#039;ll need the ohm that it&#039;s connected at, in your case with those speakers it&#039;s 4 ohms.Voltage = current x impedance -- at 1 ohm voltage and current are approximately the same, and at 4 ohms voltage is 4 times larger than current. So you can plug in 45W and 4ohms like this V = √(45Wx4ohms) = 13.416VOnce you know the expected voltage value (13.416V) for 45W @ 4 ohms you can unhook your speakers from the amplifier and hook up your multimeter to the amplifier + and - for that channel on AC voltage mode. Play 0db test tones of various frequencies at very low gain, as low as is audible, but as high volume as you regular play music on the head unit, at least from 40hz to the 150hz range and whichever tone yields the most voltage without touching the gain or volume between tones, play that and turn the gain until it reaches 13.4V and then you&#039;re done and can hook up your speakers again knowing you&#039;re getting close to the maximum performance you can get from them.</blockquote>

[QUOTE="Lasherž, post: 8711548, member: 679555"] It's totally fine to have an amplifier of higher rated power than the speakers. You just have to be careful since you can't trust the clipping lights that might be included with the amp. Glancing over your amplifier it doesn't appear to have one of those lights anyways. Set your gains using 0db sine wave test tones like on kicker's website, a multimeter, and ohm's law. For example, for setting each channel to 45W you'll need the ohm that it's connected at, in your case with those speakers it's 4 ohms. Voltage = current x impedance -- at 1 ohm voltage and current are approximately the same, and at 4 ohms voltage is 4 times larger than current. So you can plug in 45W and 4ohms like this V = √(45Wx4ohms) = 13.416V Once you know the expected voltage value (13.416V) for 45W @ 4 ohms you can unhook your speakers from the amplifier and hook up your multimeter to the amplifier + and - for that channel on AC voltage mode. Play 0db test tones of various frequencies at very low gain, as low as is audible, but as high volume as you regular play music on the head unit, at least from 40hz to the 150hz range and whichever tone yields the most voltage without touching the gain or volume between tones, play that and turn the gain until it reaches 13.4V and then you're done and can hook up your speakers again knowing you're getting close to the maximum performance you can get from them. [/QUOTE]

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