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Thread: İs it possible to use semi-proffessional soundcards like crossovers?

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    İs it possible to use semi-proffessional soundcards like crossovers?

    Well I started to like the idea of active crossovered system in my car... So in near future I'll be doing that. It is known that I'll be needing active crossover or worse: A DSP Unit!!

    These units are really expensive and my system is not that proffesional. I own two pairs of infinity kappa perfect 6.1 speakers and two pairs of JBL px300.4 amplifiers. I'll probably buy a pair of kappa perfect 12vq subwoofers and px600.2 amplifier for subwoofers. So my system is not perfect; but not bad also!

    I'm thinking, there are lots of semi-proffesional soundcards which have 4 or more stereo outpus. I'm wondering, with these cards is it possible to make them play the same source; but with different frequencies?? Exactly like a active crossover? Actually I know there are some but my soundcard is hippohifi-bloat. I'm not shure that the outputs of an m-audio or audiotrak would be like bloat... So if I ever upgrade my system to an active system should I give the money and buy a DSP or would a soundcard be sufficient for me?

  2. #2
    Low Bitrate Challenged's Avatar
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    If you really want to go the software route, you should check out this page which details adding software crossovers to a setup via the KXProject drivers: http://www.mp3car.com/wiki/index.php...dio_Processing

    However, I just bought a 2-way active electronic crossover and installed it next to my 4 channel amp a couple of days ago. So far, I'm very happy with the extra sound shaping that it has given me. The one I bought wasn't very expensive at all..I think I picked it up for about $30.00 new. I have two amps in my car, with the high/mids running through both of them (one is a factory amp I didn't want to remove), so the high/mids were overpowering the subwoofer, but with the active crossover in the mix I can dial in the exact levels for each set of speakers and it works fine.

  3. #3
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    I'm using a 7.1 channel soundcard with Virtual Audio Cable, ASIO4ALL and AudioMulch, with EQ and crossover filters, and it works quite well. I'm not using the kxProject drivers (my soundcard doesn't support it).

    Just a note about your proposed speaker and amp setup. If you plan on buying those subwoofers, that amp is not the best choice. Get a subwoofer amp, not a fullrange 2 channel amp like you chose. It will be smaller, run cooler, be more efficient, and will be cheaper. You want something that can output about 1000 watts RMS at 2 ohms. That's important, since if you have two subs, you'll wire them in parallel, which will be a 2 ohm load on the amp, not 4 ohms.

    Hope this helps!
    -- Kevin

  4. #4
    Car Audio Moderator durwood's Avatar
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    Pretty much what they said. Lots of documentation here:

    http://www.mp3car.com/wiki/index.php...g_via_Software

    minus a good description of using virtual audio cable or JACK. There is a explanation of how to use JACK at the www.thuneau.com forums. At one point I had written instructions for using VAC, but no idea what I did with it.

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    Thank you for the replies!!

    One last question:
    I'm using bloat dac as soundcard and I'm seriously happy with its sound quality. If I switch to active crossover system; but use a creative card (for example to use kxproject) can I get the same quality out of it? And I think that kxproject is no longer supported and doesn't work in vista/7.

    So what soundcards would you reccomend me? To use my all speakers as active, I need 8 channels for them. Plus minimum 1 channel for sub, so I need at least 9 channels. 10 channels is ideal!

    Another option is to set the fronts as active and the rears passive. Then I need 8 channels which most cards can give...

  6. #6
    Low Bitrate Challenged's Avatar
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    I do own an M-Audio Delta 1010LT card (not in my car though), and while the quality is quite good, even it only supports 7.1 output. So, if you're looking to do more than 7.1, I think you may be better off going with an external, active crossover setup. That's probably where I would spend my money, instead of buying something that isn't particularly well suited to the task.

    Maybe some other guys can chime in if they know of some products or methods I'm not familiar with, however.

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    hmmm... then I'll be needing a dsp for time alignment etc...

    I found M-Audio Fasttrack Ultra (I guess)... It has 6 balanced channels and 2 saperate stereo headphone outputs... In its' specifications it writes that crossover, time alignment and EQ setting can be made saperately to this six channels and headphone outs. I guess for headphone outs one setting can be made for two channels (stereo). Because no one needs different time alignment for left channel and right channel in headphone... But I can use those outputs for woofer etc...

    I need some soundcard recomendatiton I guess!

  8. #8
    MySQL Error soundman98's Avatar
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    the most i can find right now is 8 outputs. though i think that there are a couple professional, rackmountable units that might support more, but were way over $500, so i didn't check them out too much...

    also, another thing that i have found is to not focus so much on what the company tells you what you can do with it, but to focus on how many outputs it has, and if it will fit your install and what you want to do.

    for referance i am (i actually don't have the carputer installed now--too cold around chicago for that now...) using the esi gigaport hd(usb, 8 outputs) and audiomulch to control everything.

  9. #9
    Car Audio Moderator durwood's Avatar
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    the audigy cards use different codecs on some of the channels and the resampler is not so good causing a bit of extra garbage in the upper frequencies.

    1010LT says you can use 2 cards together for 16 channels, but I haven't seen anyone do it. Do you need more than 8?

  10. #10
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    If I make my setup as active in front and passive in rear speakers, then I'll be using 6 channels for speakers. 1 or 2 channel will be for the woofer, so 8 outputs is enough. But if I can find a soundcard with 10 outputs, then I'll also use my rear speakers active.

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