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SPDIF or TOSlink on an all in one 12v ready computer?

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  • SPDIF or TOSlink on an all in one 12v ready computer?

    Hey guys,

    I have been into building pc's for years, and i have been doing mobile media and car audio for a while. i have a pretty serious car audio competition vehicle and i want to use a carpc to control it. i have some good ideas - but i have been out of the PC game for a minute and all this mini ITX solutions are awesome.

    is there a solution like the products that the mp3car store have for sale that will give me a toslink or spdif coax output?

    thats really all i need, i would like to buy a barebones kit that will do that with a small form factor, and im willing to build it if i have to - but basically the features i need are;

    small form factor
    12v ready power supply
    wake-on
    possibly a battery to keep in hybernate
    digital audio output via spdif or toslink

    thats it, and the form factor is not concrete - but id like it to be small thats all.

    any help would be appreciative, i will keep looking in the interm!

    thanks everyone

  • #2
    I use the toslink optical output of my MB. Works great and virtually noise-free.


    Sent from my iPhone using Tapatalk

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    • #3
      What are you using to go from toslink to your cars audio system? Amplifier or converter of some kind? My new board has optical out and all the amps I could find that had toslink connections were discontinued or needed a head unit to control it.
      1997 Acura CL (Capacitive Touch, GPS, DVD, HD Radio, Backup Camera)

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      • #4
        I am using a Sewell 5.1 Decoder. I built a 9VDC regulator for it. Default is 5.1. If not running a center channel will sound like crap. There is a little push button in it to convert to 4.1. I have It powered at all times. It has minimal drain if any on the battery. Also the output level is very good and clear. No distortion. It also has a output mute when no signal is detected. You will need this as most DACs output a loud noise when no input is received.


        Sent from my iPhone using Tapatalk

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        • #5
          Basically i have two Mosconi AS200.4 amplifiers, and currently i have an Alpine PXA-H701 that i am using an Alpine DVA-9861 with a TOSlink output to the outboard DSP. I want to bypass the DVA-9861 due to its limited capabilities - but i want to retain a digital signal chain and use the DSP for its high quality DA converter.

          Soon i will have a Helix P-DSP, and i will be using that.

          i dont want to build anything crazy, im going to be using the outboard DSP to control all the audio signal stuff - im just using the PC as an audio transport via digital TOSlink or SPDIF.

          so yea, i found a motherboard

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          • #6
            req,

            Seems you have everything you need. Maybe someday I'll be able to afford a PXA-H701 for my setup. Good luck to you.

            Bobby

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            • #7
              Originally posted by besjr69 View Post
              req,

              Seems you have everything you need. Maybe someday I'll be able to afford a PXA-H701 for my setup. Good luck to you.

              Bobby
              hey bobby,

              i actually have an H701 and a H700. I am also getting a Helix P-DSP in a trade from a guy i know, and in a few months ill swap that out with an arc audio PS8.

              I have a friend who is willing to sell me his motherboard\ram

              http://www.intel.com/content/www/us/...d-d2700dc.html

              and i have found a screen that looks plug and play

              http://www.mo-co-so.com/Double-DIN-M...700-mtc-dd.htm

              all i need is to get a DC to DC power supply that will regulate my alternator\battery output

              http://www.mini-itx.com/store/?c=10

              and a solid state hard drive. im thinking a 60gb drive will do the job.

              thoughts?

              Comment


              • #8
                Definitely on right path. I have the same display. Be warned it may be a little bit taller than a standard double din opening and may require customization. For power, I use the
                M2-ATX with the Zotac ION-ITX/FE MB. I also power my monitor off of the 12VDC rail of the power supply. Remote turn on for the amp is via a small com port utility. I think you'll be good with your selection.


                Sent from my iPhone using Tapatalk

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                • #9
                  Thanks for the info besjr,

                  I have a VW GTi right now, and it has an extra .75 inch tall opening because there is a slide out cup holder that i plan on putting a slot load DVD rom behind. ill just extend the facia of the dash fit down with some ABS and put a slot and some LEDs back there and call it a day. I will also put the analog volume pot on there to make it look stock and adjust the audio in the analog realm so i dont loose any bit-data on the input side of my digital signal processor.

                  so basically i just need the case, the screen, the hard drive, and the power supply and im waiting on my friend to ship me the mobo\ram\cpu. it looks like this should go together fairly quick!

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                  • #10
                    Originally posted by req View Post
                    Thanks for the info besjr,

                    I have a VW GTi right now, and it has an extra .75 inch tall opening because there is a slide out cup holder that i plan on putting a slot load DVD rom behind. ill just extend the facia of the dash fit down with some ABS and put a slot and some LEDs back there and call it a day. I will also put the analog volume pot on there to make it look stock and adjust the audio in the analog realm so i dont loose any bit-data on the input side of my digital signal processor.

                    so basically i just need the case, the screen, the hard drive, and the power supply and im waiting on my friend to ship me the mobo\ram\cpu. it looks like this should go together fairly quick!

                    How's the build going req? I'm doing something extremely similar to yourself, using a m/b with toslink output to go directly to a H701. Did you end up using a mini-ATX? Which case did you use?


                    thx,
                    Oz

                    Comment


                    • #11
                      hey oz, here is what i got for you - maybe ill start a build thread, maybe not

                      this is what i put on my car audio forum, diymobileaudio[dot]com[slash]forum under the car pc subforum. i have been competing in MECA sound quality as part of a small group (11 of us) on Team DIYma. I plan on taking this setup to the MECA north american sound quality finals to compete in Mod Street class. here is a video walkthrough of my system;

                      Originally posted by req
                      sorry its so long winded LOL.



                      things are changing, when they do - i will make a new video!

                      lets just say this is what ive got now;

                      2x IMAGE DYNAMICS IDMax DVC4, 2x Exodus Anarchy 6.5, 2x Vifa XT25 1" Dual Ring Radiator Tweeters, ALPINE PXA-H701 / RUX-C701, ALPINE DVA-9861, 2x Mosconi AS200.4


                      and on my test bench, i have a 2.3ghz car pc with a 120gb SSD, a Helix P-DSP, and im looking at some 3 inch midrange speakers!

                      things are going to be cool


                      Originally posted by req
                      So this is my first PC build in like 4 years. I did not want to go the
                      way of the car pc because of the complications - but in the past few
                      years the miniITX form factor, along with the other people around and
                      the capaitance screens have made me think twice.

                      so here is what i have or is in the mail;

                      screen;
                      Double DIN Multi Touch Capacitive Mini Touch 700 7" VGA Touch Screen Monitor with auto switching auto power on 450 nit high brightness LCD panel and 800 x 480 support

                      case;
                      Black Box Mobile Mini ITX Carputer-Car PC Case

                      power supply;
                      High Voltage M3-ATX Smart Automotive Grade DC to DC Power Supply

                      optical drive;
                      Newegg.com - Sony Optiarc CD/DVD Burner 8X DVD+R 8X DVD+RW 6X DVD+R DL 8X DVD-R 6X DVD-RW 24X CD-R 24X CD-RW Black SATA Model AD-7690H-01 - CD / DVD Burners

                      hard drive;
                      Newegg.com - Corsair Nova Series CSSD-V128GB2-BRKT 2.5" 128GB SATA II MLC Internal Solid State Drive (SSD)

                      Mainboard w\ 2gb of ram;
                      Intel® Desktop Board D2700DC

                      and thats about it. i've got the system booted up right now in the bios, it takes about 5 seconds to post. im working on getting windows tiny7 installed to a thumb drive so that i can install the OS before the cd rom gets here lol... but im having trouble finding a good tool to mount an iso to a thumb drive. The windows thumb boot utility requires the iso to be a certain type and its not cooperating with me haha.

                      so ill be working on that some more tonight. hopefully the screen and case and such comes later this week

                      Originally posted by req
                      just some pics, still waiting on parts!



                      Originally posted by req
                      Ok,

                      so I'm waiting on parts still. The supplier for the minitouch monitor missed delivery. I contacted mo-co-so.com and the guy told me what the deal was, and he is sending everything but the monitor now.

                      I also ordered parts to build the volume control for the pdsp.

                      Some random pics in a min :-)



                      Originally posted by req
                      so some parts came in the mail. the power supply, the case, and some other odds and ends.

                      i was able to wire it all up using my desktop PC's power supply as the 'car battery\ignition' source - so when i flip the switch it turns everything on just like it will be in the car.

                      just on the test bench functionality sake - i know its a rats nest, but i needed to see it working. the PDSP and the carPC are all powered together and everything seems to be working fine

                      Comment


                      • #12
                        Hey req,

                        Thanks for the post, it's awesome to see you able to do well in SQ using the Alpine H701 with just one set of mids! Very cool. Was good to see how you setup the channels for tweets and 'rears' etc. I guess having optical audio just takes away any concerns about interference or loss of quality which is exactly why I'm using the same brain.

                        I may have gone a little over the top with the plan for mine, as the H701 has a dedicated tweeter channel, two fronts and a rear, I've gone and bought amps for all of them just so I can use all the channels I have all the gear, just need to get the bits for the carputer - take a look at the schematic:

                        Click image for larger version

Name:	HiSPL Cubed.jpg
Views:	1
Size:	566.6 KB
ID:	2284181

                        So yeah, not going for the stock look at all, and up till now I hadn't thought about doing any SQ as I know the guys spend a LOT of $$$'s - this system is just to crank the tunes as clean and hard as possible for myself.....

                        I'd better get a post of my own going as I'll be starting the build soon - FYI, the target of this install is a 2002 Nissan Cube, hence the name, Project: Xtreme-Fidelity Cubed!


                        OzBeefer

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                        • #13
                          Im also using my TOSLINK of my mainboard to transport the audio to my DSP (bit.one).
                          Its ok, but I have some issues with it. First there are a lot of very loud cracks and pops when the computer switches on or off (even though it has delayed thump control), or when Windows loads.
                          It also makes a little noise while not in Windows and has some ground noise, which is quite audible when you run your amps at higher outputs (though my old PXA-H701 wasnt better in that case either, it just shut down output completely, when there was no music running).

                          This has been the case with 2 different computers already, so I guess it is related to the DSP, because everyone says the bit.one and PXA-h701 are not the best ones noise-wise and theres even an hardware filter for the pops and cracks for the bit.one (which I am going to try soon). Im going to try the new Mosconi 6to8 DSP too. It sounds very promising. The Alpine PXA-H800 sounds very nice too, but its also very expensive. Anyway, I will check both of them, and will take the one thats best.

                          You should activate 24 bit output on your PC btw, if your DSP accepts it, because that helps reducing noise, too.
                          Last edited by Gullimonster; 05-02-2012, 05:13 PM.

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                          • #14
                            Just a little feedback.

                            the H701 has a noise floor, and its not something i enjoy - but then again - i compete for sound quality as a competition - so maybe im just insane.

                            i have heard the bit.one and the jbl ms8... nothing crazy to me, the features seem there - but the interface is annoying as far as user control - and im not giving the p-dsp that i have any room because i dont like the interface for this either - specifically the fact that one can not change the size of the control screen - it only works above a certain resolution... its really irritating - thanks audiotec fischer, but the bit.one does this too if im not mistaken.

                            i do agree with the noise from the 701. its not the greatest, but again - mine is like 10 years old or better? so maybe, who knows

                            i would wait on the mosconi. i have a friend who has no speakers because the mosconi destroyed them all from some crazy failure. keep your eye on it - but give it some time to mature, at this stage i would not trust that piece of hardware in my system due to the stability problems. and the h800 is nothing but a cheaper version of the h700\701. it was tested with an o-scope and what not, it has a higher noise floor than the h700\701 does and does not do anything new, and none of the issues people had with the 700\701 were sorted or changed. im really dissapointed with alpine.

                            hopefully ill have the connector for the pdsp to install the analog volume pots soon because i cant install my carPC until the volume knob is ready - as SPDIF and TOSlink do not have volume control.

                            basically at this point - i have centrafuse on the PC - i had to do a windows7 regular install because it does not work with tiny7, and im OK with that. i got 40gb of music on my SSD at this point, and im just hung up on the volume control and one more issue.

                            basically there is a key sense wire for the picoPSU to trigger power-on. i set the PC to go to hybernate when the power button is pushed (ala- ignition key removed) and it shuts down hybernation style with no problems. but when i trigger 12v on the ignition to boot it back up, it hangs post windows with an error that says the hybernation state may have had an error, do you want to continue loading hybernation data or would you like to boot fresh.

                            ill figure it out :P

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                            • #15
                              Originally posted by req View Post
                              Just a little feedback.

                              the H701 has a noise floor, and its not something i enjoy - but then again - i compete for sound quality as a competition - so maybe im just insane.

                              i have heard the bit.one and the jbl ms8... nothing crazy to me, the features seem there - but the interface is annoying as far as user control - and im not giving the p-dsp that i have any room because i dont like the interface for this either - specifically the fact that one can not change the size of the control screen - it only works above a certain resolution... its really irritating - thanks audiotec fischer, but the bit.one does this too if im not mistaken.

                              i do agree with the noise from the 701. its not the greatest, but again - mine is like 10 years old or better? so maybe, who knows

                              i would wait on the mosconi. i have a friend who has no speakers because the mosconi destroyed them all from some crazy failure. keep your eye on it - but give it some time to mature, at this stage i would not trust that piece of hardware in my system due to the stability problems. and the h800 is nothing but a cheaper version of the h700\701. it was tested with an o-scope and what not, it has a higher noise floor than the h700\701 does and does not do anything new, and none of the issues people had with the 700\701 were sorted or changed. im really dissapointed with alpine.

                              hopefully ill have the connector for the pdsp to install the analog volume pots soon because i cant install my carPC until the volume knob is ready - as SPDIF and TOSlink do not have volume control.

                              basically at this point - i have centrafuse on the PC - i had to do a windows7 regular install because it does not work with tiny7, and im OK with that. i got 40gb of music on my SSD at this point, and im just hung up on the volume control and one more issue.

                              basically there is a key sense wire for the picoPSU to trigger power-on. i set the PC to go to hybernate when the power button is pushed (ala- ignition key removed) and it shuts down hybernation style with no problems. but when i trigger 12v on the ignition to boot it back up, it hangs post windows with an error that says the hybernation state may have had an error, do you want to continue loading hybernation data or would you like to boot fresh.

                              ill figure it out :P
                              Yeah I heard about the problems with the Mosconi, but I also read that its already being fixed and can be avoided by a few precautions. Im going to try it in a few months, maybe even only next year. Still need new amps and speakers.
                              Still, people say it has almost no ground noise, and thats very important to me. The ground noise of the bit.one is driving me nuts. If only it would also shut off the output when there is no signal, that would be enough already.

                              Didnt know the H800 is so bad, but It doesnt really surprise me... I already was pretty disappointed with Alpine.

                              You cant change volume over your PC via TOSLINK? Thats weird. Worked fine for me with every PC I ever had.

                              Had a Hibernation error like that too. Turned out to be a USB device that caused it. Might wanna try it without any USB device connected.
                              Last edited by Gullimonster; 05-03-2012, 10:07 AM.

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