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<blockquote data-quote="gunz4me" data-source="post: 5749043" data-attributes="member: 596464">You can invoke the high pass filter on the deck if you so choose to OR run it active.&nbsp; Since you didn&#039;t purchase component speakers, I suggest using the built-in High Pass filter on the Alpine.If the amp can run 4 ohms stereo on two channels it will not have any problems running 2 ohms on the other channels since it is 2 ohm stable.&nbsp; Word of caution, those Infinity Reference speakers are NOT true 2 ohm drivers because they are guaranteed to work with any 4 ohm setup!&nbsp; Wherever you can find a nice, shiny, clean, paint free metal surface close to your amps.&nbsp; It would help if that metal was close to a frame rail, but it isn&#039;t always necessary.&nbsp; I would take great pains to NOT mount the amp directly to any sheet metal.&nbsp; Doing so makes it a magnet for outside generated noise to make its way into your system.&nbsp; I have seen instances where isolating the mounting screws/bolts from the amplifier and vehicle metal has cleaned up noise.</blockquote>

[QUOTE="gunz4me, post: 5749043, member: 596464"] You can invoke the high pass filter on the deck if you so choose to OR run it active. Since you didn't purchase component speakers, I suggest using the built-in High Pass filter on the Alpine. If the amp can run 4 ohms stereo on two channels it will not have any problems running 2 ohms on the other channels since it is 2 ohm stable. Word of caution, those Infinity Reference speakers are NOT true 2 ohm drivers because they are guaranteed to work with any 4 ohm setup! Wherever you can find a nice, shiny, clean, paint free metal surface close to your amps. It would help if that metal was close to a frame rail, but it isn't always necessary. I would take great pains to NOT mount the amp directly to any sheet metal. Doing so makes it a magnet for outside generated noise to make its way into your system. I have seen instances where isolating the mounting screws/bolts from the amplifier and vehicle metal has cleaned up noise. [/QUOTE]

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