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<blockquote data-quote="soulstace" data-source="post: 1972089" data-attributes="member: 569136">Match up RMS (continuous) power output of the amplifier to RMS power handling of your subs.Make sure you take impedence into consideration.&nbsp; For example a dual 4 ohm voice coil subwoofer will require a 2 ohm stable amp (4 ohm / 2 voice coils = 2 ohms total), and the amp&#039;s RMS power should match your sub&#039;s RMS power at 2 ohm.&nbsp; If you get amp which RMS power matches your sub, but at 4 ohms, power output would not be sufficient.If you have two dual 4 ohm subs connected in parallel, then you need a 1 ohm stable amp.4 ohm / 4 voice coils = 1 ohm totalThere is also an option of connection the subs in series (i.e. dual 2 ohm sub = 4 ohm total), but this is generally only used when you have many low impedence subs and/or an amplifier that can&#039;t handle very low impedence level with all of them hooked in parallel.</blockquote>

[QUOTE="soulstace, post: 1972089, member: 569136"] Match up RMS (continuous) power output of the amplifier to RMS power handling of your subs. Make sure you take impedence into consideration. For example a dual 4 ohm voice coil subwoofer will require a 2 ohm stable amp (4 ohm / 2 voice coils = 2 ohms total), and the amp's RMS power should match your sub's RMS power at 2 ohm. If you get amp which RMS power matches your sub, but at 4 ohms, power output would not be sufficient. If you have two dual 4 ohm subs connected in parallel, then you need a 1 ohm stable amp. 4 ohm / 4 voice coils = 1 ohm total There is also an option of connection the subs in series (i.e. dual 2 ohm sub = 4 ohm total), but this is generally only used when you have many low impedence subs and/or an amplifier that can't handle very low impedence level with all of them hooked in parallel. [/QUOTE]

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