Setting My Amp

[blgaudio 10+ year member]

I was wondering how to properly set up my amp, as well as my hu, to get the most out of my 10" Audiobahn. The Amp is a Kole Audio KX2-620 600 watt amp, the HU is a Alpine CDA-9851 and the Sub is a Audiobahn Aw1051T.

The Amp has the following settings Level: min-max, Subsonic: 30hz-175hz,Bass EQ: 0db-24db, Lpf; 30hz-500hz

The HU has a bass setting ranging from 60hz-120 hz and BBE from1-3.

Any help would be appretiated.

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[Prowler573 5,000+ posts]

I was wondering how to properly set up my amp, as well as my hu, to get the most out of my 10" Audiobahn. The Amp is a Kole Audio KX2-620 600 watt amp, the HU is a Alpine CDA-9851 and the Sub is a Audiobahn Aw1051T.
The Amp has the following settings Level: min-max

This will be the input sensitivity adjustment, more commonly known as the "gain." Please see this stickied thread for detailed information on how to properly set that.

Subsonic: 30hz-175hz

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.

Bass EQ: 0db-24db

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

Lpf; 30hz-500hz

This is your Low P*** Filter. It allows frequencies below 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.

The HU has a bass setting ranging from 60hz-120 hz

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.

and BBE from1-3.

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

Any help would be appreciated.

Good luck getting it sorted out ~ hope I've helped at all.

 

[blgaudio 10+ year member]

Thanks for the reply, very informative, I started pittling with it today until it started snowing and I figured moisture and electronics dont mix so I quit on that project until the snow stops. As far as BBE im clueless as well it has 4 settings 1 2 and 3 and effect off i cant tell a bit of difference between them: