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  • PC audio extreme,competition/studio level...

    alright, I've been active on the audio software thread & the usb vs optical thread & I've been cluttering them up enough with my off topic posts, so for this one I figured I'd just start a thread...

    I guess the average guy who clicks on this thread is going to just think this is nutz, but there are a few here who understand what I really want to achieve

    the end goal of my project is to have all audio in my new car originate from the pc... I will have no head unit... I also don't have any room for a separate processor control display, so I've been shying away from using an alpine processor which was the original consideration...


    I then considered doing all audio processing on the PC, my plan was a dual PC setup that used the rear PC as kinda an audio server, doing all processing through console & vst plug ins ... outputted thru some form of DA conversion.... while this is still a viable option for me, in my research to find the equipment to do audio on the PC & through a mention by red, I found something pretty cool...

    a rack mount pro audio processor that does everything that would ever be needed to tune a car... it has 8 outputs & oh well,here :

    Click image for larger version

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    Product Description

    The DB Drive Rack 480 stands at the heart of the Drive RackŪ system. The dbx Drive Rack 480 includes 4 inputs and 8 outputs which can be tailored for any configuration. By including every form of processing necessary to drive the signal from the mixer to the power amps, such as pre-crossover EQ, notch filters, speaker delay, multiple crossovers, speaker compensation equalizer, driver alignment delay, and compression/limiting, the 480 is truly the only box you’ll need for any sound system application. Two real time analyzers can be run simultaneously with RTA source inputs capable of being remotely switched on the fly. The 480 is fully programmable from the front panel, with the 480R remote control, or through a computer via the GUI port.



    dbx Drive Rack 480 Features

    4 Inputs and Outputs with routing
    31 band graphic or 9 band parametric equalizer on every input (pre-crossover)
    Dual Real Time Audio Analyzers
    Butterworth, Bessel or Linkwitz-Riley crossover filters
    27 Different Crossover Configurations
    Time Alignment and Transducer Alignment Delays
    Compressor/Limiter on every output
    Speaker Compensation EQ (post crossover)
    Multi-level Security System
    Separate House and Show EQ with individual lockout
    Triple redundant back up of all parameters when running network, 480R and PC GUI
    TYPE IV™ Conversion System
    Electronically balanced/RF filtered XLR Inputs and Outputs
    Proprietary RS-485 Control Network
    RS-232 PC Interface for computer display and configuration





    Technical Details

    Specifications

    Inputs
    Number of Inputs: 4 (Inputs 3 or 4 can be selected as an RTA Mic input)
    Connectors: Female XLR
    Type: Electronically balanced/RF filtered
    Impedance: >40kOhms
    Maximum Input Level: Hardware selectable for +30, +22, +14, dBu
    Maximum Input RTA Level: -10 dBu
    CMRR:
    >40 dB typical
    >55 dB at 1kHz
    Input Gain Range RTA: 10 dB to 70 dB w/60 dB typical
    Outputs
    Number of Outputs: 8
    Connectors: Male XLR
    Type: Electronically balanced, RF filtered
    Impedance: 120 Ohms
    Output Transformers: Optional
    Maximum Output Level:
    +25.5 dBu into 1kOhm
    +22dBu into 60 Ohms
    A/D Performance
    Type: dbx Type IV™ Conversion System
    Dynamic Range (line):
    >112 dB unweighted
    115 dB A-weighted
    Type IV™ Dynamic Range:
    127 dB with transient material, A-weighted, 22kHz BW
    125 dB with transient material, unweighted, 22kHz BW
    119 dB typical with program material, A-weighted, 22kHz BW
    Sample Rate: 48kHz
    A/D Wordlength: 24 bits
    D/A Performance
    Dynamic Range:
    112 dB unweighted
    115 dB A-weighted
    Sample Rate: 48kHz
    D/A Wordlength: 24 bits
    System Performance
    Internal Wordlength: 48 bits
    THD + Noise: 0.003% typical at +4dBu, 1kHz, 0dB input gain
    Frequency Response: 20Hz- 20kHz, +/-0.5dB
    Interchannel Crosstalk: <-85dB at 1kHz, 0dB input gain
    Pre EQ
    Type: One 31-band Graphic EQ per input channel, or 9 band Parametric EQ per input channel
    RTA can be substituted for EQ in channels 3 and 4
    Range: +/-12 dB range
    Notch Filters
    Number: 1-5 per input channel not to exceed 10 for all input channels
    Pre Delay
    Length: 680ms/channel
    Crossover: Type: 1x2, 1x3, 1x4, 1x5, 1x6, 2x3, 2x4, 2x5, 2x6, 2x7, 2x8, 3x4, 3x5, 3x6, 3x7, 3x8, 4x6, 4x8
    Filter Type: Butterworth, Bessel, or Linkwitz-Riley
    Slope:
    6, 12, 18 or 24 dB/octave for Butterworth or Bessel filters
    12, 24, 36 or 48 dB/octave for Linkwitz-Riley filters
    Post EQ
    Type: Parametric
    Number: 4 EQ bands per output channel
    Range: +/-15 dB range
    Dynamics
    Type: Compressor/Limiter with PeakStopPlus™
    Attack/Release: Program Dependent
    Linking: All 8 bands are linkable
    Post Delay (Driver Alignment)
    Length: 170 ms per output channel
    Pink Noise Generator
    Position: Pink noise inserted on selected input(s)
    Phase Compensation
    Number: One per output channel
    Amount: 0-180 degrees phase shift
    Output Polarity: Reversible
    Miscellaneous
    Output Transformers: Optional
    Network: Proprietary RS-485 Backbone
    GUI: RS-232 interface for computer display and configuration
    RTA Microphone: Optional
    ROM Upgrade: Flash upgradeable through RS-232
    Power Requirements
    Watts: 100-240V - 50/60 Hz; 35 Watts
    Dimensions:
    Height- 3.5"
    Width- 19"
    Depth 12.15"
    Weight: 11lbs.





    my thinking is, that if I'm going to go out & build a pc for this, & then add the harware & software necisary, including high end hardware anyway, the cost may not be way cheaper than a unit like this anyway.... this thing is like $2,500

    the software for this is totally cool, you can do anything through it's gui & never have to touch the unit in the trunk past initial setup.....

    this is professional studio grade stuff, so the quality is there, & interface is ideal.... it even has real time analyzer funtions built in... the possibilities are pretty cool with this thing... I could call up the rta in roadrunner & embead it as the visualization, talk about a cool visualization

    in the end, what difference is it to me weather my audio is being processed by a core 2 duo slave unit with da converters running console, or weather it's all being done with this stand alone unit... somehow I think the rackmount will be more reliable & less fussy, not to mention booting in maybe 5 seconds

    heres a screenshot from the software:

    Click image for larger version

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    MY NEWEST INSTALL:modded infiniti fx with big screen

    first windows carpc install........my liquid cooled LVDS screen :D

  • #2
    I guess I'm just looking for thoughts or opinions on a setup like this.... any input is good input....

    aside from the price & the space required, anyone see any drawbacks that I might not see?

    the more I think about this, the more I think this might just be the ultimate solution
    MY NEWEST INSTALL:modded infiniti fx with big screen

    first windows carpc install........my liquid cooled LVDS screen :D

    Comment


    • #3
      I think it looks awesome. Scares me though... Just the price tag. I could never afford it, nor need it!

      But it is definately a cool piece of machinery.
      Fusion Brain Version 6 Released!
      1.9in x 2.9in -- 47mm x 73mm
      30 Digital Outputs -- Directly drive a relay
      15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
      Buy now in the MP3Car.com Store

      Comment


      • #4
        yeah, I just put a snipe bid in on one on ebay

        crazy stuff I guess... this is just such a sweet piece... I'll know in a little while weather I win that one or not... it's cheap & the sellers a bit shady, but I would only do a cash pickup or he can go screw himself..., he's not to far from me really... if I get this one it'll be relatively cheap
        MY NEWEST INSTALL:modded infiniti fx with big screen

        first windows carpc install........my liquid cooled LVDS screen :D

        Comment


        • #5
          a snipe bid means you will know in like 7 seconds!
          Fusion Brain Version 6 Released!
          1.9in x 2.9in -- 47mm x 73mm
          30 Digital Outputs -- Directly drive a relay
          15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
          Buy now in the MP3Car.com Store

          Comment


          • #6
            I don't really have anything useful to add to the thread, but I gotta say it's a damn good concept. I'm definitely looking forward to see what happens with this. Is this going in the Caddy?
            -Jay

            1997 Chevy S-10, ext. cab
            CarPC Progress: 75% - Functional, but not quite finished.
            Check out my progress.

            Comment


            • #7
              yeah, in the caddy, I just won it $1275.... damn cheap...... now to see if it's bull**** or not.... I'm going to go out there & pick it up or no deal...

              wow, this should be an interesting install
              MY NEWEST INSTALL:modded infiniti fx with big screen

              first windows carpc install........my liquid cooled LVDS screen :D

              Comment


              • #8
                Originally posted by turbocad6 View Post
                yeah, in the caddy, I just won it $1275.... damn cheap...... now to see if it's bull**** or not.... I'm going to go out there & pick it up or no deal...

                wow, this should be an interesting install
                Congrats on sniping!
                Fusion Brain Version 6 Released!
                1.9in x 2.9in -- 47mm x 73mm
                30 Digital Outputs -- Directly drive a relay
                15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                Buy now in the MP3Car.com Store

                Comment


                • #9
                  Very ambitious! Hope it works out well for you.
                  "In the beginners mind there are many possibilities, but in the experts mind there are few."- Shunryu Suzuki
                  "Do it right or don't do it at all"

                  PROGRESS:
                  [-------90%-] (New Car=New Build)

                  Comment


                  • #10
                    haha way to snipe! Awesome! There are no drawbacks from what I know. If you have the space in the trunk, use it. Altering the power supply should not be too hard. Ther is one definite advantage this has over software...less risk of blowing up drivers because something went haywire in the software or computer. I'm Jealous!
                    System always under construction


                    Comment


                    • #11
                      MY GOD... where you putting that thing?

                      2006 Mazda 3
                      Behringer DCX-2496
                      JL300/4 Focal 6W4311B Focal TN52
                      JL500/1 JL10w6v2

                      Comment


                      • #12
                        this is kinda ambitious, but really it's the easy way out for me


                        I see a lot of definite advantages,

                        total & complete solution for all software/hardware out of the box, no questions it just works ....

                        just feed this from one (tube maybe) usb dac using asio driver, done.... the PC just spits out raw unaltered unprocessed bit perfect sound, no excessive load to the host PC at all... don't need any drivers even but the asio...

                        all control is on the PC though & is integrated into one program & is a professionally designed pro studio system that's integrated by dbx directly into there hardware..... every adjustment is a module & a separate pop open window that can be dragged into a rack.... the skinning possibilities with roadrunner & this are pretty sweet... when I call up eq 1 could pull up 4 31 band eq's at a time, cycle through, well you get the drift, Lotta room to play there


                        just playing with the software this is so cool, you can adjust & manipulate every aspect of everything.... multiple notch filters in any order filter... it's just so cool

                        the reliability & stability of this compared to a PC is another huge plus for this design....

                        the core2duo laptop with the hardware that would have been the alternative to this make the cost of this negligible really.... comparing the 2 at around the same price just made this choice so obvious to me for myself


                        overall this is a guaranteed drop in awsome system to begin with, all configured & working properly it is definitely the easiest way to get what I really want.... & the tuning, man, I can tune to my hearts content, all on professional studio equipment, man this is going to be sweet

                        the only drawback I do see is I was kinda looking forward to being one of the firsts to do a real competition system on the PC alone, but bottom line is that would have been a longer up hill battle with more than likely less overall results..... I've got enough of those in my life right now, & easy guaranteed just sounds so good to me right now

                        in the end all I want is a kick *** system all controlled through the pc, this should be a great start

                        I will still follow the PC based threads though, & I'm sure I'll do another system somewhere with that soon enough too.... I,ve got 2 other builds coming up soon that could wind up that way....




                        I got an email from the auction wife, she's going to relay to her husband.... hope I really get this unit at what it's supposed to be... if not, they can be had for under $2,000 anyway used.... I gotta have one of these
                        MY NEWEST INSTALL:modded infiniti fx with big screen

                        first windows carpc install........my liquid cooled LVDS screen :D

                        Comment


                        • #13
                          it's only 3 1/2 " high..... it'll go in the trunk..... I'll probably take it apart, but I doubt I can make it much smaller... don't worry, I'll get it in there somehow
                          MY NEWEST INSTALL:modded infiniti fx with big screen

                          first windows carpc install........my liquid cooled LVDS screen :D

                          Comment


                          • #14
                            how are you going to control the volume?
                            i agree..this is definately the way to go, and now you can get a dac with balanced outputs too :-)
                            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

                            Comment


                            • #15
                              Very sweet unit!

                              I only see 4 channel input, no optical input. Do you plan on listening to multichannel audio? Any options for Dolby decoding add-ons with this model?

                              Comment

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