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<blockquote data-quote="Dam_nDirtyApe" data-source="post: 8427321" data-attributes="member: 666894">First impression is that your subwoofer amp is a bit under-powered. The sub is rated at 500w rms, while the amp puts out 300 at 4ohms.&nbsp; Ideally your amp should be rated AT LEAST what the RMS of the sub woofer is, and more is better.Also, unless you add amps to the front soundstage, the Alpine headunit will power speakers at a low to moderate level only. 20w per channel is just barely enough if you like to listen thumping rock/pop. For some rap it&#039;s ok since there is not a lot of midbass in some rap and its all about the low bass, like 80hz and below.. which leads back to the sub being under powered.&nbsp; Not saying it wont sound ok at &quot;normal&quot; volumes, just keep your expectations realistic. &quot;Powerful 200 watt amplifier&quot; is typical marketing hype.&nbsp; Always check the RMS at the impedance you need (4 ohm in this case) to get a more sensible number.&nbsp; 20 watts per channel doesn&#039;t sound quite as **** and impressive as 200.. But&nbsp; a nice 4 channel amp is an easy fix for that if you decided to get one later on.As a point of reference, my DSP puts out 35 watts per channel and I have that going to my midranges and 70 watts RMS to the midbass woofers. My system gets loud enough to sound ok, but cannot dig deep when it really counts. The amp clips when I push the volume up to what I want.&nbsp; Clipping can kill a speaker in a heart beat.&nbsp; I&#039;m getting rid of that DSP/amp unit and going 180watts per channel minimum with new amps. Eventually I plan to go 300 per side (although I have aftermarket speakers that can handle far more power than a stock system). The subwoofer amp that goes with my DSP also puts out 300 watts rms to the sub.. again its pretty meh for me and is about to swapped for a 1200watt rms Alpine.Better to wait a bit, save up a few hundred extra dollars, and then buy a sub woofer amp you wont outgrow or be disappointed in.</blockquote>

[QUOTE="Dam_nDirtyApe, post: 8427321, member: 666894"] First impression is that your subwoofer amp is a bit under-powered. The sub is rated at 500w rms, while the amp puts out 300 at 4ohms. Ideally your amp should be rated AT LEAST what the RMS of the sub woofer is, and more is better. Also, unless you add amps to the front soundstage, the Alpine headunit will power speakers at a low to moderate level only. 20w per channel is just barely enough if you like to listen thumping rock/pop. For some rap it's ok since there is not a lot of midbass in some rap and its all about the low bass, like 80hz and below.. which leads back to the sub being under powered. Not saying it wont sound ok at "normal" volumes, just keep your expectations realistic. "Powerful 200 watt amplifier" is typical marketing hype. Always check the RMS at the impedance you need (4 ohm in this case) to get a more sensible number. 20 watts per channel doesn't sound quite as **** and impressive as 200.. But a nice 4 channel amp is an easy fix for that if you decided to get one later on. As a point of reference, my DSP puts out 35 watts per channel and I have that going to my midranges and 70 watts RMS to the midbass woofers. My system gets loud enough to sound ok, but cannot dig deep when it really counts. The amp clips when I push the volume up to what I want. Clipping can kill a speaker in a heart beat. I'm getting rid of that DSP/amp unit and going 180watts per channel minimum with new amps. Eventually I plan to go 300 per side (although I have aftermarket speakers that can handle far more power than a stock system). The subwoofer amp that goes with my DSP also puts out 300 watts rms to the sub.. again its pretty meh for me and is about to swapped for a 1200watt rms Alpine. Better to wait a bit, save up a few hundred extra dollars, and then buy a sub woofer amp you wont outgrow or be disappointed in. [/QUOTE]

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