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Subject: RE: [emlsynth] Re: How do you use the EML Envelope Follower? (lil yellow box)

From: "George Mattson" <axisair@...>
Date: 2011-08-18

Ah, Doug, you're getting old :)
 
The 401 has a +/- voltage out jack between the Vext input and the trigger out on the lower left of the panel.
 
It requires a TRS plug to bring otu the voltages and ground.
 
As far as the Envelope follower goes. I have the EF-1 circuit module and documentation. It requires +/-15V. It looks like the one on eBay is the circuit module mounted into a Radio Shack hobby box that's been painted up really well. I used the same box for the Syntar power supply.
 
If EML made those, it makes sense that they made them so that you could string boxes of modules together by daisy-chaining the power.
 
The trim pot on the board is for setting the gate trigger hysteresis. The guy probably didn't need to replace it.
 
George Mattson.

From: emlsynth@yahoogroups.com [mailto:emlsynth@yahoogroups.com] On Behalf Of Doug
Sent: Thursday, August 18, 2011 2:38 PM
To: emlsynth@yahoogroups.com
Subject: [emlsynth] Re: How do you use the EML Envelope Follower? (lil yellow box)

 

To my best recalections, the none of the EML synths had any sort of DC power output jacks. Would have been nice though.

I have to assume you are referring to the board level experimenter products that EML produced. I have a couple of the sample & Holds that I use in my SteamSynth, but beyond that, I don't know much.

I'll make a strong assumption however... You'll need to decide how you want to power your (rare) Envelope Follower board. I would NOT modify your EML synth just to bring out the required voltages.

I would strongly suggest a small external power supply, then simply connect the grounds of the two units.

--- In emlsynth@yahoogroups.com, "ukrainiannproud" <prosperp@...> wrote:
>
> I first saw one of these on the bay about a month ago (still there, crazy expensive) but have an opportunity to buy one locally for much less.
>
> I want to buy it to augment my 100 and most of the controls and jacks seems self-explanatory except for the power ones. There's an in and an out for power and the one listed and the one locally don't come with a power supply as far as the owners know.
>
> Does the 100/101/200 power it just by connecting it? Why is there an in and an out? Can this be used with a 100 or not? Are there only certain synths that it's useful with?
>