By “somewhat popular” demand (having been asked for the schematics “several” times) we have made a PCB and kit available for the circuit we use to add 1V/Octave scaled input to the ElectroComp EML-100 and EML-101 synthesizers.
The EMLs use between 1.2 V/Octave and 1.4 V/Octave (varying from one unit to another) with an offset of between 4.2V and 4.6V. Our board allows you to feed in conventional one volt per octave control voltage from another synth, controller keyboard, sequencer, etc. and scales it up so that the EML’s second-voice oscillators can track it. Using a sequencer especially opens up amazing possibilities for this already very powerful synth!
Our original version of this circuit just performed the summing and amplification and required the installation of a new external switch to turn the mod on and off. Our new version uses a multiplexer to automatically perform this switching task when a plug is inserted in the CV input jack. This means that it can be completely invisible– no hole needs to be drilled, and the synth functions 100% as original when nothing is plugged in.
The mod can be used on both versions of the EML-101. On the later version that has a “Sequencer” jack, the Sequencer jack becomes the 1V/Octave input, and on the earlier version, another jack can be selected to be the new 1V/Octave input (we use CM3).
We are looking for someone to help us take photos of the installation in an EML-100 in exchange for a free PCB or kit so if you have a 100 and are interested in the mod, please get in touch!
The PCB will come with schematics, bill of materials and detailed installation and tuning instructions with lots of full color photos. The kit will come with all of the above plus all required parts and the jack already partially wired (because this is probably the thing people are most likely to mess up!)
Remember when we used to do a blog post and try to think of something to say about every Juno 106 we worked on? It’s a good thing we stopped because this is the 31st Juno 106 that I (Alison) have personally restored, not to mention the ones that Darian has done.
One thing we find in almost every 1980s Roland we work on is crumbly, dirty “dust shields” or “dust protectors” on the sliders (aka faders) of the panel board. These gaskets were cut from thin black EVA foam sheets and were meant to protect the sliders from dust. However, 35 years later, they have dried out and are falling apart, their fragments actually falling into the sliders and making their crackly and intermittent behavior much worse.
This was one of the first few organs Darian and I bought and fixed up, and because of space issues in our studio/workshop/dining room, we have decided to sell it. In the past few weeks we have finally finished up a few tasks that we’d wanted to do for ages to make it as good as it can be.
When we got this organ it was a wreck. It literally looked like it had been set on fire. The red top looked scorched and melted and had a lot of gashes, pockmarks and cracks. Continue reading “Elka Panther 300 (#2)”
I bought this Juno from a guy named Mike in South Jersey, with a shaved head and a gold chain. I met up with him at his garage studio behind a roller rink, where the Juno had been used for over 25 years by musicians providing live accompaniment for the roller skaters. Now the music is performed by two “old cowboys” (his words) on two Hammond console organs. I also met Mike’s overweight English bulldog, who he introduced to me as his girlfriend. I think her name was Bethany. Continue reading “Roland Juno 106 (#7) – this is New Jersey”
I just finished restoring the electronics on this beautiful Juno I bought directly from Japan, with all its voice cards failing, to restore and sell. I was going to announce it as “for sale” here on the blog, but I had already posted it on our Reverb shop yesterday, and by the time I checked my email today it was already sold. Continue reading “Roland Juno 106 (#5)”
This Elka Panther 300 combo organ from the late 1960s was fully serviced by Bell Tone’s combo organ expert Darian, and is actually now for sale in our Reverb shop.
The Panther, also known as the Elka Capri, is unusually richly featured for a single-manual organ. It has a bold yet rich sound, a powerful vibrato and a wide variety of tone filters. This particular organ bears the name Capri, but it is exactly the same as the Elka Panther 300 organ, inside and out. Continue reading “Elka Panther 300”