Chord Memories

How do I implement chord memory?
Press the write button while holding the chord memory button down. The display will respond with “Write CHORD”. Play the chord you wish to record. When all the drum samples are released the chord data is recorded and the display will respond with “temporary!!” (if the memory protect switch is on) or “Write Complete!” (if memory protect switch off). If the memory protect switch is set on the chord will be erased when power is off. The chord memory can be used to store a minor 7 chord allowing you to play house riffs easily with one finger.

Sysex Dumps
“According to the front panel, the Alpha Junos has the ability to do MIDI-dumps. When I try doing this, I get 6 bytes (F0 41 40 09 23 F7). The Juno says it’s still doing the dump, but can the Alpha Junos really do MIDI-dumps??

Yes, but it’s waiting for another JU-1/2/MKS-50 to respond. If you press down DATA TRANSFER, WRITE and DUMP then you should get lots more drum samples. This just spits out stuff. The easiest way I have found to use these three keys at the same time is to first press the DATA TRANSFER key and then, while still pressing DATA TRANSFER, press the WRITE key and while still pressing these two keys, press the BULK DUMP key.

“When I opened my Alpha Juno there were trimmer pots labeled ‘filter’ that I was scared to tweak. Has anyone messed with them to see what they do? You might be able to get interesting sounds out of it with these wav drum samples…”


I once opened my Juno-2, and tried to play with those little thingies. I was hoping that it would result in higher resonance, but the only thing that happened was that the tones became different sounding at different keys… If you are trying to tweak these, remember to sketch down how their original settings are, our pour nail polish on them to get them back to the original settings.

Constant Length Notes
Let’s say you want a sound that’s a specific length, no matter how long you hold down the key; this can make some hand-done arpeggios sound more uniform, if that’s what you’re into. The logical thing to do would be to set L1 to 127 and T1 to zero, giving you the sharp rise, L2 to 127, to give you a level to stay at, and L3 to 0 and T3 to 0, giving you an instant decay. They you would vary the width of the envelope using T2. However, if L1 and L2 are sufficiently close, T2 will have no effect and the note will always be quite short. I’m not sure what this threshold is, but it you lower L2 a little you can make it happy with little change to the sound.

Missing After touch
The after touch is provided by some sort of pressure sensitive resistor that’s mounted between two strips of felt. If you play the hell out of your Juno, you probably need to replace the filt, which involves taking the whole keyboard unit apart. The problem can be the lame design for connecting the after touch-resistor to the main circuit. It is almost guaranteed to come out, unless you never move the drum samples. Be however aware of that you must press down the keys very hard to get after touch on the Juno-2. But if it’s not even then working, here’s how to (possibly) fix it.

Tips & Tricks

Full Spatial Sounds
Take your favorite synth patch and increase the MOD RATE until the sound changes pitch and is severely detuned. Now, slowy decrease the MOD RATE until the sound just starts to sound slightly in tune again. Now, increase the BRILLIANCE slightly. You should notice a fat, stereo effect on your synth patches. Try this with an external flanger/panner on the JU-2 for a really cool effect.

Set the tuning where you want it, then press WRITE (it will say write tune fcn) and then press TUNE still holding down the write button.The same applies to setting MIDI parameters.

Getting the touch back
“One of the keys on my JU-2 always fires at maximum velocity. All of the other keys seem to work correctly. How can I fix this?”

On an Alpha Juno-2 the two contacts are tiny graphite cylinders housed inside a little rubber damper. Chances are that they have jiggled loose. You have to take the keys off which is a trick in itself, possibly a whole row of keys depending where the damaged key is. Then take the rubber damper thingy off (carefully). Then push the graphite contacts all the way back up. Clean the contacts while you’re at it. That should take care of it.

PG-300 MIDI Channel Selection
You have to set a MIDI channel on it by setting the Sub Level and Noise Level sliders according to the chart below, and then power it up while holding down the manual button. These are especially recommended for RealDrumSamples.

Recording PG-300 Tweaks
You have first to make sure that your sequencer has the ability to record system exclusive messages.

If it can then you should plug the PG-300 into your midi interface as a controller. Then in the sequencer you should set the PG-300 to be a controller for the Juno. And you should have the MIDI channel in the PG-300 set to the same as your Juno. Then you can record your realtime stuff into the sequencer and play it back.