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Setting My Amp
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<blockquote data-quote="Prowler573" data-source="post: 1457099" data-attributes="member: 561023"><p>This will be the input sensitivity adjustment, more commonly known as the "gain." Please see <a href="http://forums.caraudio.com/vb/showthread.php?t=63933" target="_blank">this</a> stickied thread for detailed information on how to properly set that.</p><p></p><p>This is a filter to keep the extremely low bass that is either inaudible to the average human range or is very much lower than your particular subwoofer enclosure's tuning frequency. In either case those frequencies that your sub is ill-suited to reproduce result in wasted energy and in some cases, driver malfunction, trying to get the sub to play them. Is your sub enclosure ported (sometimes termed vented) or sealed? (does it have airholes of whatever shape in it or not?) If the box is sealed you won't need the subsonic filter and can leave it off. If your box is vented it will depend on what frequency the box is tuned at to know where to properly set the subsonic.</p><p></p><p>This is a bass boost which is preset at a certain frequency. How much or how little boost you apply would depend on how far clockwise you turned that adjustment. Commonly accepted wisdom dictates that bass boosts are generally evil creatues and should not be entertained lest they get out of control. Leave this setting off as well. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p><p></p><p>This is your <strong>L</strong>ow <strong>P</strong>*** <strong>F</strong>ilter. It allows frequencies <em>below</em> your chosen cutoff frequency to pass through to the subwoofer while filtering out most everything above that setting. Start somewhere in the neighborhood of 75Hz and move it slightly up or down to see what sounds best to your ears. Again, drawing on commonly accepted wisdom, sub bass starts to become localized at around 80Hz. This means it starts to become obvious where the bass is playing from (the physical location of the sub) rather than being enveloped by the bass which is the optimal result of a proper install.</p><p></p><p>This will be the same as the LPF on the amp. Go with the same starting point as given above and go from there. Use the LPF in the head unit, use the LPF in the amp, or use both if you like! Just play with it and see which sounds best to your ear.</p><p></p><p>This is an Alpine feature that I am not personally familiar with so I won't be of any help there //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif</p><p></p><p>Good luck getting it sorted out ~ hope I've helped at all.</p></blockquote><p></p>
[QUOTE="Prowler573, post: 1457099, member: 561023"] This will be the input sensitivity adjustment, more commonly known as the "gain." Please see [URL="http://forums.caraudio.com/vb/showthread.php?t=63933"]this[/URL] stickied thread for detailed information on how to properly set that. This is a filter to keep the extremely low bass that is either inaudible to the average human range or is very much lower than your particular subwoofer enclosure's tuning frequency. In either case those frequencies that your sub is ill-suited to reproduce result in wasted energy and in some cases, driver malfunction, trying to get the sub to play them. Is your sub enclosure ported (sometimes termed vented) or sealed? (does it have airholes of whatever shape in it or not?) If the box is sealed you won't need the subsonic filter and can leave it off. If your box is vented it will depend on what frequency the box is tuned at to know where to properly set the subsonic. This is a bass boost which is preset at a certain frequency. How much or how little boost you apply would depend on how far clockwise you turned that adjustment. Commonly accepted wisdom dictates that bass boosts are generally evil creatues and should not be entertained lest they get out of control. Leave this setting off as well. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] This is your [B]L[/B]ow [B]P[/B]*** [B]F[/B]ilter. It allows frequencies [I]below[/I] your chosen cutoff frequency to pass through to the subwoofer while filtering out most everything above that setting. Start somewhere in the neighborhood of 75Hz and move it slightly up or down to see what sounds best to your ears. Again, drawing on commonly accepted wisdom, sub bass starts to become localized at around 80Hz. This means it starts to become obvious where the bass is playing from (the physical location of the sub) rather than being enveloped by the bass which is the optimal result of a proper install. This will be the same as the LPF on the amp. Go with the same starting point as given above and go from there. Use the LPF in the head unit, use the LPF in the amp, or use both if you like! Just play with it and see which sounds best to your ear. This is an Alpine feature that I am not personally familiar with so I won't be of any help there [IMG]//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif[/IMG] Good luck getting it sorted out ~ hope I've helped at all. [/QUOTE]
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