renepela

This is great. I'd like building this myself. Can you please post schematics and values for capacitors etc. The photo's explain a lot but it's a bit difficult to see how everything is connected.

Hier nog een Nederlander met een volledig afgeronde MB6582 (inclusief control panel) met 8 SIDS. Ik heb ook nog een sammichSID gemaakt. Voor de MB6582 gebruik ik gewoon een oude commodore voeding. Je moet wel opletten dat je de voeding gebruikt van het "nieuwe" type commodore. Dat zijn die witte. De oude voeding van de eerste serie C64's (die bruinige) zijn niet sterk genoeg.

I know a commodore 64c powersupply might do the trick, however the mb-6582 is very close to the maximum that the C64 powersupply can handle. What I like to know if I could offer 12V DC directly to the 7809 regulator on the MB-6582. The 5V is not the issue. It's the 7809 that does nog get a high enough voltage to regulate. So If I get me a power supply with 5V DC and 12V DC I won;t need the big capacitors and the diodes to make the AC into DC. I can offer 12V DC directly to the 7809. I won't be needing anything else because I only use the 9V SIDS and not the 12V SIDS. Is this possible?

I have a working MB-6582 with 8 sids. The only problem I have is an anoying noise in the audio signal which I believe is coming from the powersupply. I only use the 9V sid types so I don't need 12V. I used a scope to measure some things an noticed the voltage going in the 7809 voltage regulater is between 10.6V and 11.7V. I think that's causing the troubles. 10.6V is simply to low for the voltage regulator to regulate. I guess my powersupply just can't handle it and the big capacitors can't fix that. So I need a better powersupply. Finding a new commodore 64 power supply is no garantee for a fix so I think a completely different powersupply is a better option. Is it a good idea to find myself a regulated powersupply which delivers 12V DC and 5V DC? The 12V DC I can offer directly to the 7809 regulator. All I need to do is bypassing the diodes. I don't need them anymore since I'm offering a DC voltage directly. A commodore Amiga 500 powersupply could be an option. The pinout is here: http://pinouts.ru/Power/amiga500power_pinout.shtml I notice a 5V, gnd and +12V. There's also a -12V which I don't need. I could solder a different connector to it so it fits the MB-6582. Is this a good idea or am I missing something here?

I can now see the panel files and it looks great in motm format with extra cv's. Unfortuantely it's a jpg. Is the .fpd file of this motm version also available somewhere?

I have plans building a mb seq for my motm size modular. Looking for info I found this thread. Unfortunately I can't see the panel design. Is it possible to post some more info on your design? It would save me a lot of time I I could see your design and panel.

For quite a while now I have a finished and working mb6582 which I like very much. Still I'm not 100% satisfied because I hear a humm in the outputs of all sids. I think the problem is the powersupply. I was wondering if a Commodore 128 power supply is a better option. I can get one quite easy but will it help? I read the commodore 128 can handle 2.5A so it seems to me that's more than enough. Are the C64 and the C128 powersupply compatible? Or do I need to change it in some way? I know it has a different connector, but are those pins 1:1 the same? Kind regards, Rene

Thank you !

Where can I download this pdf manual?

Thanks Smithy !! Now I can change my bank from the CS. Now the only thing I need to find out is how to change the bank with Cubase. I can change my patch, but not my bank. Probably I need to select the ensemble menu first, but I don't know how to do this with Cubase SX 4.

For a while now I'm the proud owner of a MB-6582. It seems to work fine but after using it I have some questions I cannot find a few things in the manual. I'm probably overlooking some things. 1) What does the L R button do? I guess it sould disable the left or the right channel, but on my MB-6582 nothing seems to happen. The LEDS are working and the button also changes the L R leds, but nothing happens to my sound. Is this normal or is something wrong with me MB-6582? 2) How do I select my bank. I just can't figure out how to go to bank B, C etc. 3) What does the sync led do? When I press the button below it the led does not light. All my leds are working in te test app. I'm using Mios 1.9g and Midibox sid RC33. Best Regards, Rene

How stupid of me ! I completely forgot it's stereo. Now I also understand why you designed a dual VCF. So I need an aout_ng module for each core and 4 dual VCF boards. Are there pcb's available with 4 x aout_ng and 4 x dual filter on it? A one pcb solution would be nice and a great addon for the mb-6582.

It's all becoming clear to me now. Last questions (I promise). The aout_ng has 8 CV outputs. I probably need 2 CV's for a filter module (one CV for cutoff and one fro resonance). So can I use 4 x 2 CV's for 4 filters? That would mean I only need 1 AOUT_NG module to control 4 filters.

Thanks Wilba. It's probably a very stupid question, but what exactly can i do wit the aout board. Is it to control external filters? So will i be able to use the midibox OS to control external filters? If I want to connect an aout module, Do I need to wire it to the first core only? Another thing i don't understand fully is the combination of the auout module and the 2044 dual filter VCF. I understand the AOUT module Control Voltages control the filter. But where does the audio go? Can I use the expansion port to route the audio output to the VCF? Can I route the Audio output of the VCF back to the MB-6582 (again using the expansion port) and send the filtered output to the main outputs of the midibox sid? That way i would only need one cable to the aout/vcf expansion and no extra audio connections. Last question: Can I power the aoout module and the 2044 dual filter VCF from the expansion port or do I need an external power supply? Kind regards, Rene

Since a few months I enjoy having a MB-6582. It works great but there's two things I still have to do. First the LCD display. On wilba's photo's The LCD screen is almost in line with the Control surface. It's just a little bit lower. My LCD screen however is a lot lower than the panel. That's because I had to put several plastic rings between my CS and the LCD for isolation. Is there a better way to get the LCD screen higher? The second question probably is asked before, but I still don't get it. I want to use the expansion port. At the moment I didn't wire it because I don't know how to do it. I don't know which pins of the expansion port to which pins on the MB-6582 main board. Do I have to wire all core's to the expansion port or only the first core? Kind regards, Rene

You're right. I mean the triangle wave. I can confirm the led does work. Sometimes it does burn when I select a preset. I just can't select it with the button. What should be the waveform cycle when I press the button? When it's 100% working I'll post some pictures. Actually it does look the same as your MK2. Some colors, same knobs, same display etc. Not very original, but it sure looks great !

My MB6582 is finally finished. Unfortunately it has a strange problem with the Control Surface. It's probably easy to fix but I don't know where to look for the problem. When I pres the button to select a waveform of the sid (left to the edge of the CS, the four leds below the matrix) it behaves strange. The first time I press the buttton sometimes more than one led starts to burn, so it looks more than one waveform is selected. That can't be right. Also I can never select the sine wave. Any idea where to look? Which part of the pcb is responsible for those leds in particular?

Today I finished my MB6582. It works great and I want to thank TK and Wilba for their great work. Unfortunately I have a small problem which hopefully can be solved. I have attached a 5V fan to J3. The fan works but I can hear the fan in the audio signal. Quite strange. It's present as a constant humm in the audio signal. When I put the fan to 12V I also hear it in the audio signal only at a higher pitch. It's related to the speed of the fan. What is causing this and is there a way to fix this? I'm afraid I have to buy a new fan. Is there any thing I have to look at to prevent I buy a noisy fan again? Knd regards, Rene

That's the help I needed. Thanks !

Hi, I feel a bit stupid I can't figure this out. Even with the instructions Wilba wrote. I can't figure out how to connect J70. I know it's a passive mixed ouput the stereo jack and I know I have to solder some wires on the back of the pcb. I suppose J70 has to be connected to my stero jack. But how. J70 has 3 pins. My stereo jack has 6. Three on the left and three on the right. Can someone please explain how to connect J70 to my stero jack? I quote: "To the right of the resistors R70-R77 (below the stereo sockets) are pads, these pads should be connected in two sets of wires, one set connects the pads that are next to R70, R72, R74, R76, the other set connects the pads that are next to R71, R73, R75, R77" To the right of R70-77 is nothing on my board however on the left I do find J21B - J24B. Are those the sockets we are talking about here? If so how do I connect them to J70? Can someone pleae give me detailed onstructions on where to put the wires? I feel quite stupid but I realy don't understand this part.

I'm almost finished building my mb-6582. It works great but I want to add the feedback pots on the back. I have 4 dual gang pots. Maybe I overlooked it somewhere, but I can't find where to connect the pins on the pots to. The pots have 2 x 3 pins each. Where do I connect the pins to? I suppose I have to connect them to the J3 and J23 pins on the board. There's in, gnd and out. Which pin on the pot do I connect to which pin on the pcb?

I don't know if it's a bug or it's justme doing something wrong. When I go to the filter tab and move the left cutoff filter everything is fine. When I move the left filter, the right filter is also moving. Which is normal. However, when I move the right filter cutoff , the left filter is also moving. But this time it makes a strange noise. So moving the left filter is fine and moving the rigt filter causes noise. I put in new sids but the problem remains, so the sids are not the cause. It could be the core however. But then I don't understand why there is no noise when moving the left cutoff. The right one also moves so it should be the same as moving the right one.

I was lucky. A neighbour gave C64C. That's the newer white C64. The power supply can deliver 1.7A instead of 1.5A. The reboots are gone now. Also the 7809 doesn't get as hot as before. I don't know why. However I'm still not convinced this solves the problem. With the LCD attached the voltage on J3 is 4.85A. Without the LCD the voltage is 4.91A. Still a little more so the 5V still can drop. At the moment I didn't attach the front panel (it's not finished yet, I hate soldering those leds :() I'm affraid all those leds will cause the MB6582 to reboot again. Or is the 1.7A power supply capable of handling the current for the base pcb and the Control surface? If it's really a close call, I could use higher resistor values for the leds. They won;t be very bright than, but at least they wont draw so much current.

It's a an old brown power supply from the first C64 model. on this picture it's the one on the left: http://jope.fi/cbm/cbm/c64psu.jpg I've never seen a black power supply for the C64. Is there an alternative for the C64 powersupply wich can handle more current? The C64 power supplies are hardly capable of handling the current.

Recently I have build an 8 sid MB-6582. It works, but is very unstable. Sometimes it reboots. I tried to investigate the problem and noticed a voltage of 4.35V on J3 (and J4 etc.). I think this is to low. It should be 5V. Also the 7809 voltage regulator is getting quite hot but that's normal I guess. I use powersupply option A because all my sids are 6582's which require 9V. When I don't attach my lcd my 4.35 volts become 4.5 and the reboots are gone. So I think the 5V is just to low. How can I solve this? Why is my 5V voltage to low?