frequency response and then some

[hunter7279]

so im trying to choose an amp for a pair of 2 ohm dvc 12" alpine type-r the new 1223d they are 600rms each, im probably gonna run them at 1ohm or maybe 2ohm(will there be a sound quality difference as far as the amp is concerned?). my question is about frequency response if an amp says it runs from 30hz+ than doesnt that mean you'll be missing out on low notes? thats what subs are for and if they dont play that low then why have a subsonic filter?( i know the subsonic filter is for ported boxes) iv been lookin at a hifonics brutus bxi1610d for like $210 but elemental designs also has the nine.1 for $250 this is really where id like to stay budget wise but all recommendations are welcome im a helluva bargain hunter.... above all SQ is my concern. im still undecided as far as sealed or ported goes for a box iv always had seled and have been very happy but EVERYONE says type-rs love ported if i did go ported it would be small like 1.5cuft per and tuned around 30-33hz. i have a mazda3 with a decent trunk but i would like to still be able to put stuff in it,THANK YOU i know this is alot...

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[DarkScorpion 10+ year member]

If SQ is your main concern, the Type-R isn't the best sub for you. Type-R's do sound best ported, but 1.5cu.ft per 12" sub definitely isn't enough for them.

No, you will not hear a difference between running at 1ohm and 2ohm.

And link to what you're talking about concerning the frequency response of the amp?

Also, in the $250 range, there are a HUGE selection of amps to choose from. I'd take a look at the Audioque AQ1200.1D, MBQuart DSC1500.1D, and The eD Nine.1 (like you said, that sale price is pretty good).