Hawkeye

Hi, do you have another means of testing the filters? E.g. a real C64 with MSSIAH would be great... What kind of capacitors do you use for the filters? They probably should differ from 6581 to 6582/8580. Other than that, it would be interesting to measure voltages on the SID socket (with plugged in SID), while the MIDIbox is playing and the SID filter is turned on... check between PINs 14 and 28 and 14 and 25. Bye, Peter

Output from one module = input to the other module, viewed from the modules´ perspective i´d say all is fine :)

Sorry for not answering earlier, i´ve thought a lot about it, and it is a quite unique problem, you are definitely not doing something stupid there... You can upload firmwares, so bidrectional MIDI works, that implies that the MIDI connection up to the cores works fine. SID pair #1 (rightmost core) works when using the play button, that implies that the first core can communicate with the first SID pair, and that the audio output circuit is ok. As you said, you did check, that the current patch displays "Chn 1" (listening to notes sent on MIDI channel 1)? A suggestion close to wicked1´s approach: can you pull cores 2-4 and (albeit that may be unnecessary) the sids from slots 3 to 8? Maybe there is something going on on the CAN bus, that gives interference, but that is wild guessing... we may need TK. to help here :) Bye, Peter

Yes! A great help for bad rhythm programmers (like me) :-). The second demo is fantastic! Thanks and many greets, Peter

Hi Alex, The LM317 works great (if you want "uneven" voltages, because you can adjust it with resistors or pots)! (I use one to bring down the voltage for my FPV video goggles from 11-12V to 6.5V). For "standard" voltages, e.g. exact 9V you can also use the 78XX (here 7809) Regulator, they are also very easy to use, you just need two small capactitors with each one and are ready to go... Bye, Peter

Hi Antonio, thanks and thanks for the holiday location tip! The Dirtbag Deluxe (here is the DIY build link: http://www.madbeanpe...rtBagDeluxe.pdf ) is an EHX Deluxe Memory Man clone, an analog delay, based on those old "bucket brigade" delay chips from Panasonic... all "retro analogs" are quite lo-fi, because the high frequencies will degrade the longer the delay time (gives this dark "pink floyd" character), many digital delays emulate that (and I think the rebote does this too with some analog filtering)... I already have a digital "jomox t-resonator" delay+filter, which can do other wild things, so I wanted to build a pure analog one, when there is time... but I have to agree, the Rebote 2.5 sounds really very close to those analog ones, i like it a lot! Bye! Peter

Hi Antonio, was always planning to build a "Dirtbag Deluxe" DIY analog echo, but the Rebote 2.5 sounds really nice lo-fi, despite being digital... still pondering! But thanks a lot! Hope your holidays were nice! Bye, Peter

Enjoy your fantastic new synth! If i had to part with all synths, the MB6582 would go last :)

Thanks for the reply and the TDA1022 offer, J! Will keep looking for a while, neither the listed shoppe or utsource haz them (asked for a quote), if all fails, will prolly fallback to the "Coolaudio" 3005 clone, that has less headroom, but should work somehow! Bye, Peter

A few questions for debugging: Do you hear the "startup" sound, that is played when the MBSID is fired up? Have you tried turning the "cutoff" encoder so that it displays FFF before playing any patch? Do you hear "chip noise", i.e. noise from the SID, that is always present, even if nothing is played? Have you populated your SIDs right to left (in case you have less than eight) ? Have you selected the right voltages for the right type of SID? Have you measured voltages while the MB6582 is powered on? (Between Pin 14 and 28, between Pin 14 and 25 on the sid chip sockets)? Do you have the feedback mod installed? If so, you could just "pull the plugs" going to the feedback pots, for a test.. Have you tested individual sidpair outs vs the mix out? Bye, Peter

Hola, After having had lotsa fun with the Polivoks VCF build, what the MB6582 really still misses is a "vintage" analog delay (moar saturation with increased delay times, "deluxe memory man" style), so I´ve looked into some diy analog delay projects... Using the retro MN3005 bucket brigade chip would be my first choice (i know, there are modern alternatives, but the real thing with 15V headroom would be nice! ;-)) Now, there are some chinese sellers on ebay, but... you know... Questions: a) does any MIDIboxer have some leftover stock from an analog delay build (i´d need four pieces)? b) any recommendations on "reliable" ebay or shop sources, that have these in stock? No hurries... :-) Thx for any comment! Peter

sorry, afaik, cloning only works if you already have running mbsid firmware on the slave pics... so just follow the "Initial Installation of Slave Cores" instructions.

Interesting topic and usecase for a core32 :) The SD standard does not specify wear levelling, but there are manufacturers, that explicitly provide it: http://www.memorydep...t.asp?catid=isd Using such a 2 GB card, one would have to write 10 TB of data, before it becomes unusable. So I would buy an "industrial" one and not worry too much about optimizing/caching on the software side. Bye, Peter

can only recommend to use Rutgers Patch Librarian, easy to use, you don´t have to switch anything on the MB-6582, just upload the patches or the full bank :). Won´t work under Macos 10.7+ though: http://www.ucapps.de/midibox_sid/v2_editor/MBSIDV2_Editor_v0_5.zip

Haste evtl schon mal gemacht, aber kannste trotzdem mal die Spannungen bei eingesteckten SIDs in den Sockeln nachmessen? Ich tipp entweder drauf, dass der SwinSID trotz evtl zu niedrigerer Spannung noch einwandfrei funktionieren würde, oder dass die Spannung einbricht, wenn Du drei 8580er drin hast: http://www.waitingfo...n_Configuration Messung zwischen Pin 14 (Ground) und Pin 25 (sollte 5V sein) und zwsichen Pin 14 und Pin 28 (sollte 9V sein). Ciao, Peter

Congrats! Great build, hope you enjoyed it! ;-) Hitting the "play" button on the top right should sound the currently active engine (output only on the respective outs, or on the mix out)... there is also the possibility, that the lowpass filter is tooo low, try turning it up, some patches may be optimized for the 6581sids, if you have 8580 sids, you may have to adjust the default filter cutoff value... other than that i´d suggest you upload the demo patch bank with many nice sid patches :) Goodbye for now and lotsa fun with your fantastic new synth! Peter

All is good, no worries, you just need to upload the MB6582 application http://ucapps.de/mios/midibox_sid_v2_040.zip (setup_mb6582.hex) to the master and slave cores: http://ucapps.de/mios_studio.html Bye, Peter

Kein Problem, Du könntest auch eine aus Karton, Balsaholz oder der Aluplatte, die beim PT-10 dabei war (Standbohrmaschine) selberschnitzen. Wenn man die dann mit einer selbstgedruckten Klebefolie bespannt und die Löcher mit einem scharfen Cutter schneidet, schaut das gar nicht schlecht aus, aber ist halt ein Haufen Arbeit... Ciao, Peter

He is one tough guy, no worries, in canada they arm-wrestle with bears because there are not many other neighbors around :)

Würde definitiv nicht empfehlen, die LEDs und die Schalter ohne Frontplatte einzulöten. Du brauchst sie quasi als "Führungsschiene", damit sie nachher gut draufgeht. Blatboy hatte z.B. aus Versehen vergessen beim Löten der Tactile Switches die Frontplatte zwischenzeitlich draufzupacken und sie ging dann gar nicht mehr drauf, er musste wieder viele Switches auslöten, bei den LEDs wird das noch schlimmer. Ciao, Peter