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Which would you use?

Old 08-03-2006, 03:19 PM
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Question Which would you use?

Which is generally the best approach in regards to crossovers?

Should I use the crossover on my deck or my Amp?

I have an //////Alpine 9835 and Audison SRx4.

Should I turn off the High Pass Filter on the amp and us the deck's cross over?

Or vice ver sa?

My concern with using the deck is it is easier to accidently turn off the crossover settings where as the amp is out of the way and the setting ***** should be pretty hard to adjust by accident.

But if I disconnected my battery the crossover settings on the deck will reset and I'd have to remember to reset it before using the system again (granted that should be a general rule anyways).
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Old 08-03-2006, 03:25 PM
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Amp settings are a set it and forget it type of deal. I'm going to try and use my amp x-overs if/when I get my stuff in this weekend only because they are variable vs. fixed at 3 different frequencies in my deck. But If my deck had more frequency chioces I'd probably use it for convienience purposes.

Its easy enough to try both too
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Old 08-03-2006, 03:26 PM
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Why not use both? Set the X-over on your amp to be a backup a little higher or lower than your decks X-over (For highpass or lowpass respectively). That way if for some reason your deck gets reset the amp x-over is still in effect a few hz off.
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Old 08-03-2006, 03:29 PM
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I was told that you shouldn't run two crossovers?

I was just looking at the manual for the amp it doesn't appear I can turn off the filter on the amp.

I can set it for Hi or Full at either 50, 65, 150, 200, 220 at a 12 dB rolloff. I think I am set between the 65 and 150 currently.

Should I move it back down around 65 and leave my deck set at 80Hz?

What is the difference between Hi and FULL mode?
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Old 08-03-2006, 03:30 PM
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Originally Posted by ingeo
I was told that you shouldn't run two crossovers?
It doesn't matter, just the one that's more restrictive is going to govern at any given frequency.
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Old 08-03-2006, 03:38 PM
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full means there will be no crossover on. in other words thats how you turn off the filter on the amp ;p
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Old 08-03-2006, 03:45 PM
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Originally Posted by ingeo
What is the difference between Hi and FULL mode?
Full was describe above. HI stands for hi-pass. All of the sound above the chosen frequency in this mode passes through as though it is in "full" mode, sounds below the chosen frequency are quieter at a rate determined by the crossover slope.
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Old 08-03-2006, 05:56 PM
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the cross over section in that Alpine is much more advanced than most amplifiers have. It's the one to use. Also, active cross overs are cumulative in their effect, by using both the head unit and amp cross overs you will create unwanted slopes (slopes add together, eg. 6db/oct+6 db/oct= 12db/oct)), and you will create unknown dips and peaks in the response due to overlapping cross over points. Use one or the other, in this case the Alpine is better. In addition, you have the convenience of driver seat control/tweaking, you can use the Alpine "i-personalize" webpage to do all your settings and burn them to a cd, that is used by your deck to set everything as per your settings on-line, so that if you need to re-set your system, you can do it. You also have, time correction(6 channels), multiple slopes for your x-o(6-24 dB/octave), parametric eq for front, rear, and sub channels etc... That's a very powerful head unit, that can keep you tweaking for a long time!
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Old 08-03-2006, 11:27 PM
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using more than 1 crossover to do the same job is called cascading and can be good but not with the level adjustment you have .
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