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2008 Elantra system upgrade.
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<blockquote data-quote="fly_marlin" data-source="post: 8433849" data-attributes="member: 660781"><p>See what your deck can do, check the manual. Subsonic filter is pretty much an HPF set really low. If you can create a pass band (between mid 20s and about 70Hz), you should be fine. If you can't, you're stuck with the alpine's 15Hz. Your bro-in-law knows what he's doing, yeah? I don't know why this amp has a non-adjustable subsonic filter. Some sub amps (some Pioneers) don't even have one - it's okay if you have another way to adjust it, but for some applications this kind of thing proves lacking.</p></blockquote><p></p>
[QUOTE="fly_marlin, post: 8433849, member: 660781"] See what your deck can do, check the manual. Subsonic filter is pretty much an HPF set really low. If you can create a pass band (between mid 20s and about 70Hz), you should be fine. If you can't, you're stuck with the alpine's 15Hz. Your bro-in-law knows what he's doing, yeah? I don't know why this amp has a non-adjustable subsonic filter. Some sub amps (some Pioneers) don't even have one - it's okay if you have another way to adjust it, but for some applications this kind of thing proves lacking. [/QUOTE]
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