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Thread: pc to amp

  1. #11
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    Quote Originally Posted by Red GTi VR6
    the outputs from onboard sound have very little voltage (something like a half a volt).
    note the emphasis

    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  2. #12
    Newbie specsix's Avatar
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    Quote Originally Posted by Red GTi VR6
    note the emphasis

    Oh! I am sorry...I was not referring to you.

  3. #13
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    ahh
    ok

    but it's always about me!

    wait...

    lol


    there are some cards out there that perform admerably well, even in terms of voltage output...we've found a few of them in some thread that's floating around here...somewhere
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  4. #14
    MySQL Error scott_fx's Avatar
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    yup...also look into the echo gina3g, 5.76 volts. I have that and an m-audio audiophile 192. I have been considering doing some comparitave tests. I just have to get a zapco active x-over so It may not be the greatest comparison
    New System in progress:
    M10k
    Phaze TD1500 ~> Dynaudio MD130
    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
    My Boat Pc worklog

  5. #15
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    Ok I'm going to play devil's advocate here because I have a setup that utilizes a H/U and blows away ALL the other systems I have come across. Here is a quick breakdown of my setup:

    -Biostar M7NCG 400 w/AMD 35w XP-m chip; 512mb ram; onboard sound
    -Alpine CDA-855D Headunit
    -Alpine component speakers (9 total including Type R sub)

    My setup basically runs a line from the computer into an Ai-Net RCA y-adapter into the back of the H/U. Ai-Net is Apline's older connection for CD changers, processors, etc. From there the sound runs to amps and speakers. I only use ONE line running out the back of the computer to the H/U and have the comp. setup to send this as a "full signal", kind of like what you'd get in some headphones or whatever. The H/U processes this signal and puts it out. And unlike hammered dog **** the sound quality is incredible. I haven't once turned it up to the point where it distorts as it has hurt my ears before it gets there! The highs are crisp, sub hits hard and nobody would ever guess that it was from a computer. Personally I like the H/U acting as A) a processing center for the music (much higher quality) and B) it serves as a back up should my comp. go down (knock on wood).

    Just be careful. If you hook a line straight from the computer to the H/U you might be a high pitched whine that you won't be able to take. 99% of the time if you run a wire form the comp. chassis to a ground then the noise will go away. That is what I had to do with one of my older comps. Just play with it, it will work and hopefully if all goes well you'll be as happy as I've been thus far!

    Oh and think about this too...those aux input jack on your H/U are meant for iPods, cd players, etc. But you plug headphones into iPods, cd playes...and computers with the same effect. The problem isn't the voltage, but rather the way it is routed through the device. I can use the exact same line going to the H/U on both the iPod and computer. I just have to play with the volume on the H/U about 20% then use the iPod/computer to control volume from there.

  6. #16
    Variable Bitrate proph's Avatar
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    Apples and oranges Putter. Hes talking about removing the Headunit. Its a totally different monster.

    No question about it some sort of crossover w/ a line driver inline.

    Thank you PPI FRX-456, I'll post a review one of these days after I'm done tuning but a great intermedite piece.

  7. #17
    Constant Bitrate godraj's Avatar
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    what are the prices like on the Audiocontrol crossovers?

  8. #18
    MySQL Error scott_fx's Avatar
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    Quote Originally Posted by PutterMcGavin
    Ok I'm going to play devil's advocate here because I have a setup that utilizes a H/U and blows away ALL the other systems I have come across. Here is a quick breakdown of my setup:

    -Biostar M7NCG 400 w/AMD 35w XP-m chip; 512mb ram; onboard sound
    -Alpine CDA-855D Headunit
    -Alpine component speakers (9 total including Type R sub)

    My setup basically runs a line from the computer into an Ai-Net RCA y-adapter into the back of the H/U. Ai-Net is Apline's older connection for CD changers, processors, etc. From there the sound runs to amps and speakers. I only use ONE line running out the back of the computer to the H/U and have the comp. setup to send this as a "full signal", kind of like what you'd get in some headphones or whatever. The H/U processes this signal and puts it out. And unlike hammered dog **** the sound quality is incredible. I haven't once turned it up to the point where it distorts as it has hurt my ears before it gets there! The highs are crisp, sub hits hard and nobody would ever guess that it was from a computer. Personally I like the H/U acting as A) a processing center for the music (much higher quality) and B) it serves as a back up should my comp. go down (knock on wood).

    Just be careful. If you hook a line straight from the computer to the H/U you might be a high pitched whine that you won't be able to take. 99% of the time if you run a wire form the comp. chassis to a ground then the noise will go away. That is what I had to do with one of my older comps. Just play with it, it will work and hopefully if all goes well you'll be as happy as I've been thus far!

    Oh and think about this too...those aux input jack on your H/U are meant for iPods, cd players, etc. But you plug headphones into iPods, cd playes...and computers with the same effect. The problem isn't the voltage, but rather the way it is routed through the device. I can use the exact same line going to the H/U on both the iPod and computer. I just have to play with the volume on the H/U about 20% then use the iPod/computer to control volume from there.

    what were the other car computer setups running? I find it hard to believe that that setup would 'blow away' a properly tuned pxa-h700/701 seeing how you have digital in to the processor and you're not using the onboard dacs.

    i think i'll sit back and just let red reply to this one though :-)

    Quote Originally Posted by proph
    Apples and oranges Putter. Hes talking about removing the Headunit. Its a totally different monster.

    No question about it some sort of crossover w/ a line driver inline.

    Thank you PPI FRX-456, I'll post a review one of these days after I'm done tuning but a great intermedite piece.

    i bet you'd have even greater sound quality if you used a usb dac and hooked that to the ppi. they aren't really that expensive compared to what you'd spend on a higher end soundblaster card...probably even cheaper. do a sech for 'usb dac' and you'll find more info. basically, from the research i've done, the usb dac is the choosen method for audiophiles to get sound from thier computers to thier amps


    Quote Originally Posted by godraj
    what are the prices like on the Audiocontrol crossovers?
    depends on which one you get. i have a 24xs sitting here doing nothing that i am looking to sell for about 80bucks. this would only be useful in a 2.1 system though.

    Depending on how deep you're wallet is, you can check out the zapco slx-4. if you get a pro audio card with balanced outputs and go balanced into the zapco x-over, you'll have a much cleaner signal then the audio contorl boxes. This is the route i'm going right now, I'll post a review when the install is completed.
    New System in progress:
    M10k
    Phaze TD1500 ~> Dynaudio MD130
    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
    My Boat Pc worklog

  9. #19
    Constant Bitrate fooshizn1x's Avatar
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    Quote Originally Posted by godraj
    what are the prices like on the Audiocontrol crossovers?
    depends on what exactly you are looking for they have a pretty wide range of products. 2, 4, 6, and 8 channel crossovers, line drivers, signal processors etc. I was looking at their 6XS 6 channel crossover and line driver and its right around $200, but everybody has different needs or ideas about their systems. But strictly cost wise, audiocontrol components are not cheap, and they are worth every penny.
    Sell me your stuff.. please see what i'm looking to buy
    http://mp3car.com/vbulletin/showthread.php?t=75182

  10. #20
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    Scott, your point is well taken and I do agree with you that there are better options for sound quality out there. Of course digital audio is going to be superior. Ultimately the sound quality is going to be a product of the last component in your system, for me the Alpine CDA-D857, for you the pxa-h700/701.

    The reason my system sound better than most others out there is because of the Alpine H/U. No matter what input it has (Aux, CD, iPod, etc.) the sound quality is built up within the unit. With the way I have my setup "all" the sound is sent to the H/U. Right now all this runs at 192kb...all of it. The H/U further works on this signal befor it is sent out to the speakers. Alpine has a 1-B regulate DAC as well as BBE processing built into the unit, I'm not saying that this is in the sound quality range as digital, but within a car environment it makes it pretty damn good. So basically I have a good signal being reprocessed into a better signal and put out to the speakers. Since it is a H/U with a S/N ratio of 105dB, THD of 0.008%, hoizontal resolution of 500 lines or better and a 1-Bit regulated DAC I don't have any complaints. The fact that the signal runs into the Ai-Net, not a set Aux control helps too I guess.

    In both cases the computers only serve to give a signal to the processing unit which is really what is at issue here. I just wanted to point out that a good quality system can use a H/U without disappointment. Also flexibility is something I had in mind when putting my system together. Like I said I have the H/U as a back up if the CPU goes down, plus it has made the integration of a comp into my system 1000x easier. My 2 cents though...

    If nothing else though Scott you do have me interested in the pxa-h700/701 units...we'll see what happens.

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