LEXICON MPX100

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This topic contains 27 replies, has 6 voices, and was last updated by mpl mpl 1 week, 2 days ago.

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  • #225

    woodster77
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    given the sysex capabillity of the lexicon mpx 100

    any chance of a controller for this as the sysex spec goes way beyond the front panel and would give it an almost pro spec

    cheers Atom

    LEDGEND……..!!!!!!!!!!!!!!!!!!!

    #2069
    atom
    atom
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    show me the specs and i’ll what i can do, without any information on the midi implementation i can’t say anything.

    #2070

    woodster77
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    sorry bout that……..duhh!!!!!!¬

    #2071
    atom
    atom
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    Well the specs are simple at first glance, but then i tried to figure out what message to send to change a parameter and i can’t figure it out. what is what, and what does nibblized mean.

    #2072

    woodster77
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    page 5 paragraph 8 goes into a bit of depth on the nibbles
    its cool if you cant broo get this up and running mate
    i was just curious……..

    #71892

    jbeuckm
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    I have the nybblize code and half the controls working here:

    https://github.com/jbeuckm/Ctrlr-Lexicon-MPX100

    Video explanation:

    • This reply was modified 2 years, 4 months ago by  jbeuckm.
    #115652

    kims
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    I guess i can use this on my MPX550 too, just change the existing knobs to the MIDI Implementation Addendum for MX550…right?

    #115667

    kims
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    oookay..

    i been fidling with the editor for my mpx550 for the last 3 days, i cant get it to work properly:

    it freezes the unit alot, specially when using the PreDelay, dont know why… sometines it works and then its possible to make awesome reverbfx!

    can anybody help on this?

    How do i add my panel in this forum? file is too long?

    #115685
    Possemo
    Possemo
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    • ★★★

    If the panel is too big to upload it here put it on a google-drive or someting similar. The first 15GB at google-drive are free of charge. Then you have to make links for people to download the file. The whole process is not very complicated.

    #115687

    kims
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    Ok thanks i just thought it was possible on this website 🙂

    Im still experimenting its like MPX550 cant “reset” it self when starting to use Ctrlr it does some crazy feedback SOMETIMES….?

    https://filebin.net/xviu38nixrtshrif

    #115688

    kims
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    its like Ctrlr are missing a command to tell MPX550 to start from zero?

    #115689
    Possemo
    Possemo
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    At first sight this all looks ok but maybe there are some bugs in the panel. The manual tells that if there are sent wrong values, e.g. an out-of-range value for the corresponding parameter the mpx could crash.

    I would check the ModulatorCustomIndex and the ModulatorCustomIndexGroup for errors. Note that system parameters usually have 1 byte, so ModulatorCustomIndexGroup = 01.

    Another thing: to exchange the panel use the menu
    File -> Export -> Export compressed binary + ressources.
    This way you get a .bpanelz file where all ressources are packed and compressed together. A .bpanelz file is so small it should be no problem to upload it here.

    • This reply was modified 3 weeks, 1 day ago by Possemo Possemo.
    #115694

    kims
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    thank you very much for answering, i was close to forget about ctrlr

    the ModulatorCustomIndex is 0002 0000 0011, which is the “Algorithm: 0 to 10 0002 0000 0011 0000 0000 0000 000A”

    jbeuckm says in part 2(or 1) that the last ´0000 0000 0000 000A´ isnt nessary

    i DIF try all the numbers, no luck with that

    and ModulatorCustomIndexGroup is allready set to 01.

    i hope its not an error the script in component-“modulatorchanged” for the MPX550 because then im lost 🙂
    i hope the MPX100 and 550 are the same in the script 🙂

    i did try things as change it to ‘F0 06 16 00 01 01 (added the extra 01, “6. Additional Bytes” and a E7 “10. MIDI Closing Byte”) as written in the MIDI Implementation, (jbeuckm says in the Video explanation that the E7 doesnt work so he changed it to a F7)

    by the way thanks to Lexicon for the MIDI Implementation, i also have a yamaha rev500 which i would like to make a editor for, and askd yamaha for more sysex parameters, but yamaha havent answerd yet for a week

    can anybody confirm that the editor actually works for the MPX100??

    #115695

    kims
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    ok a new update

    the full SYSEX ADDRESS address for the knobs doesnt work (just as jbeuckm say in the video parts), only the first 4 of the 7 sysex works

    when using the “PreDelay” on the editir it often freezes MPX550, and specally when changing to other effects such as DX1 etc
    when closing Ctlr and only using the Chambers effect all works ???

    i noticed that the “Predelay” affets the “RefDelayL, RefDelayR, EkoDly R EkoDly L EkoFbk L EkoFbk R” because when set to zero, it overloads MPX550 and freezes

    But thats what i dont understand it shouldnt happen when changing to forexample Plate…but it does

    i bet its the script…i dont know

    #115700
    Possemo
    Possemo
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    • ★★★

    If you post a .bpanelz file I could have a look. Ctrlr-Tabs are a bit rickety. When you do the wrong thing you can mess them up, like e.g. it does not show the label of the selected tab. When you change to other tabs it does activate the script, which I think is a bug.

    So when you set Predelay to zero it crashes the mpx? Then there may be a bug in the script. As said it would be much easier if you post a .bpanelz file here.

    And yes E7 is a typo of Lexicon – it should be F7.

    #115702

    kims
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    Ok i try to change it to F7 again 🙂

    the overload/freeze happens when i try to change to other effects, example “Inverse” in Ctrlr, and then adjust the Predelay
    sometimes i dont even get to adjust the Predelay, then it freeze/overload

    In Chamber it SOMETIMES work fine, but theres a clicking sound when changing effect in Ctrlr – that isnt there on the panel on the MPX550

    As i know the other knobs works fine

    the Predelay is measured in ms on the unit

    when changing size (4.0m-76m) on the unit it is writing “rebuilding” on the panel

    All of this i cant see when using ctrlr. only the written “MIDI” on the panel on the unit

    im about to make a video of the chamber in ctrlr

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    #115704
    Possemo
    Possemo
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    • ★★★

    Ah, it seems there is a problem which is not as easy to fix. According to the midi implementation manual here:
    https://3e7777c294b9bcaa5486-bc95634e606bab3d0a267a5a7901c44d.ssl.cf2.rackcdn.com/product_documents/documents/1099_1340212952/MPX_MIDI_Sysex_Inst_Rev1_original.pdf

    Parameter identifier bytes must correspond
    to a parameter that is appropriate for the
    currently-running program. Sending the
    unit a Query Message for an inappropriate
    parameter will cause it to respond with a
    Data Message that contains a garbage
    value. Sending the unit a Data Message
    for an inappropriate parameter will cause
    unpredictable results, and may even cause
    the unit to crash. If this occurs, power
    cycle the unit.
    To avoid these complications, remember
    the algorithm for the currently-running
    program or send the unit a Query
    Message asking for the value of the
    parameter “Algorithm.” Note that some
    algorithms are dual programs with an
    additional option (see Number 6 in the
    next column).

    So if you edit a parameter that is NOT available in the current selected alogithm the mpx will crash. To avoid problems you would need a procedure that will check which algorithm is selected. The panel should then only display “legal” parameters. When selecting algorithms from the panel it should also run a script that hides unused parameters.

    If you don’t feel like programming all this you might just select parameters “wisely”: Remember the selected algorithm and only touch its viable parameters.

    #115705

    kims
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    • Topics: 1
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    yes ive seen that text, but i followed their great MIDI Implementation (thank you Lexicon, you could learn a thing or two there yamaha!) but i have only used the same knobs for example Chamber, inverse etc, so it should work

    allthough in my video i noticed that when adjusting the Predelay and Attack the reverb starts to flange as its like these 2 are the same thing(?)

    but then why did lexicon add them to the Chamber in the MIDI Implementation…hmmm 🙂

    i dont know how to program all this, its just a copy from jbeuckm´s mpx100 editor 🙂

    cant acces my youtubechannel at the moment so cant upload the video (4 gb)

    • This reply was modified 3 weeks ago by  kims.
    • This reply was modified 3 weeks ago by  kims.
    #115709

    kims
    Participant
    • Topics: 1
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    i learn and learn, now i noticed that when i load the preset repesenting forexample Plate on the unit, it all works fine, so the preset Plate, Ambiance etc have to match Ctrlr

    i cant get “System” and forexample “Vpanel” to work, dont know what Vpanel is 🙂 i guess it an on screen display

    I have to be very careful adjusting the knobs becasuse the unit can do so much more in the effects than on the unit it self

    in Ctrlr it can make some awesome long big reverbs than it can on the unit, it sounds so much better in Ctrlr

    #115710

    kims
    Participant
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    heres is finally an example from the mpx550 editor

    its recorded with my zoom h1, ´not the best recording, but better than nothing right 🙂

    sorry theres no video yet

    https:

    //secufiles.com/ao7p/ZOOM0001.WAV

    • This reply was modified 2 weeks, 6 days ago by  kims.
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