On route to a more stable low cost power supply I finally decided to make my own EuroRack Busboard using,
strip board, 16 pin IDC headers, 24AVG wire and the end of a paper clip.
My soldering skills left a lot to be desired however once mounted
it looks pleasing enough to the eye and more importantly it has stabilised my modules.
I was foolishly powering them in series not parallel, I was experiencing sag and fluctuations in the current.
The busboard does need smoothing capacitors, a diode for polarity and for the visuals led’s
however the damn thing works and cost less than a tenner not including the laptop power supply,
combined with the +-12v dc power block it has cost me under £20 for a 3amp Eurorack power supply.
On route I’ve discovered quite a few things.
One of them being the output of an audio interface and if it’s linear or not.
It’s just a thought, the thing is when tuning the oscillators both of the CV outputs
that also serve as audio outputs from my KA mkii exhibit the same tuning problems
at the same frequencies which got me thinking that possibly the frequency output of the KA mkii
isn’t linear and that’s after using different voltages and scaling methods.
Off the top of my head it’s low on the bottom end, dips around C4,
peaks around C6 and then starts sharpen then taper off the further up it goes.
Reminds me of a microphone frequency response curve.
Plays havoc with the 1/V oct thingy.
Something to bear in mind when using audio interfaces as CV outputs.
DIY Eurorack busboard.
The final piece of the puzzle,
a Beep Boop Electronics Line-Euro X10 Amp module
which can boost audio and CV voltages by up to x10 and x20
by changing the jumpers on the back of the module.
Primarily used to boost line level up to Eurorack levels
fortuitously it’s also dc coupled.
Quick update.
Up until the arrival of the Line Euro x10 amp
I was sending Pitch and Env CV from the Crave to the Werkstatt
fun but limiting.
Now I can play the Moog Werkstatt on it's own and combined with
the Teenage Engineering POM filters it's a completely different sounding synth.
Pitch and Envelope CV signals are being sent out from dRambo using the Komplete Audio 6 mkii,
the signal from the KA mkii is amplified using the Line Euro x10 with
Pitch going to the Moog Werkstatt and Envelope signal to the Behringer 902 VCA's.
Another Pitch CV signal is also going to the T.E POM filter via the Animodule Line_Amp
so I can have the filters in perfect or as perfect as can be, tune which makes for interesting resonances
with the Werkstatt oscillator on input.
So my current synth sounds are as follows;
Behringer Crave, Moog Werkstatt, Teenage Engineer POM self resonating filter
and last but not least a bass synth that I'm named Aurelius
which I'm designing in dRambo with more on that later.
Update.
My Expert Sleepers es-3 landed on Saturday.
Current rig.
Expert Sleepers is now two oscillators, four envelopes and two T.E filter sweeps.
dRambo providing the oscillators, env’s, and the cv signals for the filters. ;)
and then this arrived.
About to put together a dRambo editor for it.
Aesthetics - dRambo + Expert Sleepers + KVB
dRambo+ExpertSleepers feat' the LPG's with KVB+Splat to Clat on ridem
Getting performance ready.
Next - Fine tuning
Smooth! This all looks and sounds very good! I’m happy for you and more than a little jealous 😅
Thanks bro.🙏🏾
It’s coming together really nicely. ;)
Mod+Semi+Digital - calibrated
Korg volca beats dRambo editor is almost complete.
Midi mapping in 7 mins - timelapse
Aurelius performance synth.
The Behringer Crave is the sequencer and dRambo is doing synthesis and Mastering.
I’ve started on the vocal processing chain.
The way you make it pierce through the drums, wow! Impressive
Can I have a go? 😅
Thanks.
Yeah,….
Come on over to my place. :)
Radio interlude...
Happy New Year !!!
what does your audio I/O look like?
im thinking of getting a patchbay again ...
Audio inputs / outputs
Air 3 + Behringer UMC1820
Input
Ch 1+2 Finger Squire Jazzbass + Epiphone Wildkat electric guitar
Ch 3+4 Behringer Q802 mixer for Korg Volca Drum + Beats + Korg NTS-1+ JV1010 sound module
Ch 5+6 distortion + dyna compressors pedals (3+4 normally have distortion pedals as well however look above)
Ch 7+8 Joemeek C2 opto stereo compressor
Outputs
Ch 1+2 Master Mix
Ch 3+6 distortion + dyna compressors
Ch 7+8 Joemeek
ADAT out is for the Expert Sleepers ES-3 which serves for both CV voltages and audio
SPDIF input/ output and ADAT input are currently unused
iPhone 7 + Native Instruments Komplete Audio 6 mkii
Inputs
Ch 1 unused
Ch 2 vocal mic
Ch 3+4 Teenage Engineering 24db/oct self oscillating filters with dRambo oscillators + VCA + LPG
Ch 5+6 Behringer Crave + Moog Werkstatt via SPDIF IN using a Zoom U-44 in standby mode
Ch 1+4 are being used for CV voltages
Ch 5+6 is the master mix which goes into a Behringer SRC2496 + dBX 266A compressor via SPDIF
The Master outputs from both idevices are then summed using a Subzero SZ-MIX08 usb mixer and
then finally I use a Soundcraft Notepad 5 usb to monitor on my main monitor speakers and via headphones.
Because the Soundcraft Notepad 5 also has an inbuilt usb audio interface I can use
any idevice or android compatible device to get the main mix direct to video or live stream.
Coincidentally all of the mixers currently being used have inbuilt usb audio interfaces
so I can tap into the signal path at almost any point of the signal chain.
A patchbay would certainly be useful in the future however I’ve got more than enough to play with. ;)
And then this arrived through the post today courtesy of a really good friend of mine.
I haven’t plugged it in yet however it does look dreamy. :)
let the fuzz begin ^^
More news to follow.
My Korg Volca Drum and iphone stand, obviously the iphone is running dRambo.
I recently learnt how to do 3D printing.
It’s basic but more than serviceable. ;)
The Finishing touches.
My first hybrid live stream in the dRambo Group on Facebook.
Live streamed to Youtube earlier today.
The d1-dRambo Performance Sequencer"
Comments
On route to a more stable low cost power supply I finally decided to make my own EuroRack Busboard using,
strip board, 16 pin IDC headers, 24AVG wire and the end of a paper clip.
My soldering skills left a lot to be desired however once mounted
it looks pleasing enough to the eye and more importantly it has stabilised my modules.
I was foolishly powering them in series not parallel, I was experiencing sag and fluctuations in the current.
The busboard does need smoothing capacitors, a diode for polarity and for the visuals led’s
however the damn thing works and cost less than a tenner not including the laptop power supply,
combined with the +-12v dc power block it has cost me under £20 for a 3amp Eurorack power supply.
On route I’ve discovered quite a few things.
One of them being the output of an audio interface and if it’s linear or not.
It’s just a thought, the thing is when tuning the oscillators both of the CV outputs
that also serve as audio outputs from my KA mkii exhibit the same tuning problems
at the same frequencies which got me thinking that possibly the frequency output of the KA mkii
isn’t linear and that’s after using different voltages and scaling methods.
Off the top of my head it’s low on the bottom end, dips around C4,
peaks around C6 and then starts sharpen then taper off the further up it goes.
Reminds me of a microphone frequency response curve.
Plays havoc with the 1/V oct thingy.
Something to bear in mind when using audio interfaces as CV outputs.
DIY Eurorack busboard.
The final piece of the puzzle,
a Beep Boop Electronics Line-Euro X10 Amp module
which can boost audio and CV voltages by up to x10 and x20
by changing the jumpers on the back of the module.
Primarily used to boost line level up to Eurorack levels
fortuitously it’s also dc coupled.
Quick update.
Up until the arrival of the Line Euro x10 amp
I was sending Pitch and Env CV from the Crave to the Werkstatt
fun but limiting.
Now I can play the Moog Werkstatt on it's own and combined with
the Teenage Engineering POM filters it's a completely different sounding synth.
Pitch and Envelope CV signals are being sent out from dRambo using the Komplete Audio 6 mkii,
the signal from the KA mkii is amplified using the Line Euro x10 with
Pitch going to the Moog Werkstatt and Envelope signal to the Behringer 902 VCA's.
Another Pitch CV signal is also going to the T.E POM filter via the Animodule Line_Amp
so I can have the filters in perfect or as perfect as can be, tune which makes for interesting resonances
with the Werkstatt oscillator on input.
So my current synth sounds are as follows;
Behringer Crave, Moog Werkstatt, Teenage Engineer POM self resonating filter
and last but not least a bass synth that I'm named Aurelius
which I'm designing in dRambo with more on that later.
Update.
My Expert Sleepers es-3 landed on Saturday.
Current rig.
Expert Sleepers is now two oscillators, four envelopes and two T.E filter sweeps.
dRambo providing the oscillators, env’s, and the cv signals for the filters. ;)
and then this arrived.
About to put together a dRambo editor for it.
Aesthetics - dRambo + Expert Sleepers + KVB
dRambo+ExpertSleepers feat' the LPG's with KVB+Splat to Clat on ridem
Getting performance ready.
Next - Fine tuning
Smooth! This all looks and sounds very good! I’m happy for you and more than a little jealous 😅
Thanks bro.🙏🏾
It’s coming together really nicely. ;)
Mod+Semi+Digital - calibrated
Korg volca beats dRambo editor is almost complete.
Midi mapping in 7 mins - timelapse
Aurelius performance synth.
The Behringer Crave is the sequencer and dRambo is doing synthesis and Mastering.
I’ve started on the vocal processing chain.
The way you make it pierce through the drums, wow! Impressive
Can I have a go? 😅
Thanks.
Yeah,….
Come on over to my place. :)
Radio interlude...
Happy New Year !!!
what does your audio I/O look like?
im thinking of getting a patchbay again ...
Audio inputs / outputs
Air 3 + Behringer UMC1820
Input
Ch 1+2 Finger Squire Jazzbass + Epiphone Wildkat electric guitar
Ch 3+4 Behringer Q802 mixer for Korg Volca Drum + Beats + Korg NTS-1+ JV1010 sound module
Ch 5+6 distortion + dyna compressors pedals (3+4 normally have distortion pedals as well however look above)
Ch 7+8 Joemeek C2 opto stereo compressor
Outputs
Ch 1+2 Master Mix
Ch 3+6 distortion + dyna compressors
Ch 7+8 Joemeek
ADAT out is for the Expert Sleepers ES-3 which serves for both CV voltages and audio
SPDIF input/ output and ADAT input are currently unused
iPhone 7 + Native Instruments Komplete Audio 6 mkii
Inputs
Ch 1 unused
Ch 2 vocal mic
Ch 3+4 Teenage Engineering 24db/oct self oscillating filters with dRambo oscillators + VCA + LPG
Ch 5+6 Behringer Crave + Moog Werkstatt via SPDIF IN using a Zoom U-44 in standby mode
Outputs
Ch 1+4 are being used for CV voltages
Ch 5+6 is the master mix which goes into a Behringer SRC2496 + dBX 266A compressor via SPDIF
The Master outputs from both idevices are then summed using a Subzero SZ-MIX08 usb mixer and
then finally I use a Soundcraft Notepad 5 usb to monitor on my main monitor speakers and via headphones.
Because the Soundcraft Notepad 5 also has an inbuilt usb audio interface I can use
any idevice or android compatible device to get the main mix direct to video or live stream.
Coincidentally all of the mixers currently being used have inbuilt usb audio interfaces
so I can tap into the signal path at almost any point of the signal chain.
A patchbay would certainly be useful in the future however I’ve got more than enough to play with. ;)
And then this arrived through the post today courtesy of a really good friend of mine.
I haven’t plugged it in yet however it does look dreamy. :)
let the fuzz begin ^^
More news to follow.
My Korg Volca Drum and iphone stand, obviously the iphone is running dRambo.
I recently learnt how to do 3D printing.
It’s basic but more than serviceable. ;)
The Finishing touches.
My first hybrid live stream in the dRambo Group on Facebook.
Live streamed to Youtube earlier today.
The d1-dRambo Performance Sequencer"