New combination, first improvisation with handpan, theremin and voice

Posted: 10/10/2019 1:16:25 AM
DreadVox

From: The East of Netherlands

Joined: 6/18/2019


The preview in Sunset's show gave something of an impression, but I can hardly wait to hear it live and direct and have some 'hands off' with it on monday to feel and hear how it plays now. From what you told it was due for a tune-up anyway. I did hear and see some demonstration videos of what the ESPE01 module does for the EW Std and Plus and when I bought my EW Plus I was initially thinking to get the module built in soon too. But then I changed my mind and decided to keep it stock for the time being, and I'm now thinking at a later point I'll get an EW Std with the ESPE01 module built in, as there's not an option to either switch between the unbuffered and buffered state, or a dial that goes from the stock circuit's character to being buffered to eliminate oscilator coupling. 
So I plan at a later point to add a theremin with ESPE01 installed to my sound palette rather than having it replace the sound character of the unmodified Moog circuit.

At least I expect I will not be getting as many theremins as I have accumulated didgeridoos over a few decades (spanning almost one chromatical octave, for some pitches a few instruments with different tone/playing characteristics) 

Today I did a little modification to my Vox Lil' Night Train mini-tube amp (pre-amp tube swap to a lower gain type) to reduce the input sensitivity and give larger control range on the gain dial. In the past I have had it like that too for guitar, when I got the amplifier initially I did a lot of 'tube rolling' to find some good combinations of some old time tubes to replace the new Chinese ones.

Posted: 10/10/2019 3:58:03 AM
dewster

From: Northern NJ, USA

Joined: 2/17/2012

"I did hear and see some demonstration videos of what the ESPE01 module does for the EW Std and Plus and when I bought my EW Plus I was initially thinking to get the module built in soon too. But then I changed my mind and decided to keep it stock for the time being, and I'm now thinking at a later point I'll get an EW Std with the ESPE01 module built in, as there's not an option to either switch between the unbuffered and buffered state, or a dial that goes from the stock circuit's character to being buffered to eliminate oscilator coupling."  - DreadVox

You could build my YAWESBM [LINK] and stick it in there.  Simply jumper it out if you don't like the decoupling.  Personally, I'm on the fence as to whether it is a net positive or negative.  It (like the ESPE01) extends and somewhat linearizes the bass playing range, but removes the raspiness of the low end and makes it "meow" (tracking filter / fixed waveform sound).  Perhaps replacing the bypass jumper with a few pF or so might give the best (or worst?) of both worlds.  Don't do the ESPE01 unless you really are certain that you want what it does.

Posted: 10/11/2019 5:52:39 AM
DreadVox

From: The East of Netherlands

Joined: 6/18/2019

Hi Dewster, yeah I decided I needed first to hear and experience what the oscillator decoupling does firsthand, and I do find use for the raspy effect in the low range, like emulating cetacean sonar clicks and cat's purring (with a fundamental frequency around 22-23 Hz, seems to speed up healing of strained muscles and broken bones). Your YAWESBM circuit, perhaps with a small trimmable variable capacitor across the bypass jumper could be worth trying at some point.

Posted: 10/14/2019 8:58:06 AM
Yeapsystar

From: Weert, Limburg, the Netherlands

Joined: 4/10/2012

Hi Dread!

If you want the module, please let it build in by Wilco! Than you also will have guarantee ;-)

Love & Waves from the South of the Netherlands

Posted: 10/14/2019 1:41:50 PM
dewster

From: Northern NJ, USA

Joined: 2/17/2012

DreadVox, I made an audio recording of before and after the YAEWSBM install in a Big Briar Theremin I recently worked on, see this post for the link:

http://www.thereminworld.com/forums/T/28485?post=213553#213553

Posted: 10/14/2019 5:13:00 PM
oldtemecula

From: 60 Miles North of San Diego, CA

Joined: 10/1/2014


Hello DreadVox,

I also had my own approach to modifying the EWS sound found here but I abandoned the idea of mutilating the PCB for such minimal improvement.

You can solder tack a single 47pf or 100pf capacitor across the EWS detector D4 diode for a more mellow sound. In my opinion this method is better for several reasons than the other Bass modifications. This takes advantage of shaping the mixed analog RF waveform so it sounds more natural and not robotic. 

There must not be any stress on the diode connections or you will crack the glass. Replacement is simple enough with a 1N914 but let us avoid it. Any wire connections to the diode must remain short, under 75mm.

The image shows a switch so two values can be substituted for selectable mellowness. This sound sample is using a 100pf, a 47pf is a little more edgy.

That switch could also be a miniature SPDT switch wired similar for easier switching.

Christopher


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