Saturday, 29 November 2025

Roland PG1000 programmer - connections to use with D-50

Connecting the Roland D-50 with its PG1000 programmer can be a bit confusing.
These are my notes of how I'm using it with my DAW (Abelton)


The midi merge box I'm using is a simple   ... 3 in / 1 out box
It mixes MIDI from the DAW and PG100 & sends this info to the D-50.
There is one final connection from the D50 back to the programmer.

Here is a pick of the rear of the programmer:

The PG 1000 is a brilliant machine

For the record, here is the rear of the D50



Saturday, 1 November 2025

Roland D-50 - backing patches and sound banks to computer & from PC , M256e ram card

 To back up sound banks to your PC using D50 Librarian
1. un-protect the memory of the D50.
    Press Tune/function . The display will flash. Change it using the joystick ... move to left.
2. press exit
3. check MIDI settings (default = ch 1)
I'm using DIN 7













4. press exit















5. Press "data Transfer"
   Hold Data Transfer & press "B Dum" simultaneously to select "one way Transfer"

You will see this message.
Press enter


6. press exit ... you should see your sound bank on the computer.

-----------------------------------------------------------------------------------------------------------

To transfer a sound bank to the D-50
1. un-protect the memory of the D50.
    Press Tune/function . The display will flash. Change it using the joystick ... move to left.
2. press exit
3. open the sys ex sound bank

4. press the send data tab in the Sound library program
5. on the d50 press Data Transfer
6. hold data transfer and press bulk load



120ms works best for me.












------------------------------------------------------------------------------------------------------------
Using the M256e card














This is a modern replacement for the old Roland soundbank cards









The light must be on when you plug in the card.















Press CARD on the D50 --- display will say "illegal card"
This is only because the card isn't formatted.











Press "DATA Transfer" & then "Int --> crd".













It will still say "illegal card"
ignore this and press "enter"

you will see the sending message and "verify error"
This is OK

press exit

Check the card. your sound bank should have been transferred



Monday, 22 September 2025

Plinky Synth 4U DIY Expander - build notes

 These are my build notes for the Plinky Synth expander.

The Plinky synth is an 8 voice, polyphonic touch synth.


I'm building the expander for a friend.

Links













This is the 4HP expander (not the 2HP version).

The LEDs are pre soldered.
as are most of the components.


I soldered in the Jacks 1st.
There are 2 green ones for the MIDI ... they go above the USB connector (at the top of the PCB).



This 8 pin header connects the two boards.
solder it next














there is a 10pin header... euro power?
Not sure if this is needed if you are powering from the Plinky.
i soldered it in anyway.

The 16 pin header connects to the plinky













Some final pics.
A  really easy build!
















a side on view.


Sunday, 21 September 2025

Upcoming Elk Elektroniks synth meeting

There is a synth meeting coming up soon in Wollongong, NSW, Australia.

Ed from Elk Elektroniks is organising the event.
Contact him if you are interested in performing

Save the date: Saturday 18th October 2025 from 7pm  














Location: Society City, 274-278 Crown St, Wollongong NSW 2500







Wednesday, 17 September 2025

Rompler Synths

 A ROMpler is a digital synthesizer that plays back pre-recorded sounds stored in its Read-Only Memory (ROM) instead of generating them from scratch. The term is a blend of "ROM" and "sampler". Unlike a traditional sampler, a rompler cannot record new audio; its sounds are pre-loaded by the manufacturer and are often realistic emulations of instruments like pianos, guitars, and strings, or synthetic tones. 

Note that earlier digital synthesizers, which used short-cycle sampled waveforms, are usually not considered romplers but are either called "PCM synthesizers" or "wavetable synthesizers" because the sampled waveform in this case is usually only made of a single full cycle (or a handful of full cycles) of the wave and would therefore be a fraction of a second in length. 

Why use romplers?
Romplers are known for their unique, imperfect, and "vintage" character, often heard in genres like IDM and ambient music. The way samples are stretched and looped can create subtle imperfections that add a distinctive "character" to the sound.
Using pre-made samples speeds workflow & provides "instant results" with ready-to-use Instrument Racks. The sounds are typically presented as "presets," offering instant access to a variety of high-quality tones without the need for complex programming.

While the core sound source is fixed, most romplers allow for sound shaping through filters, envelopes (like ADSR), and effects.

The advantage about using  rompler is their ease for the new user.
Its basicall a load of sample libraries, in a box.
Is the lack of sound source editing something to be ashamed of.??
They come with samples already loaded so you can focus on creating melodies.
The Orbit, for instance, contains samples of a Moog Modular, ARP 2500 and 2600, TR-808 and Fairlight CMI Ilx.

Popular early romplers include the Roland D-50 and the Korg M1. 
Classic hardware romplers include the Roland JV-1080 and JD-990, Korg M1 and Triton, and E-mu Proteus series. 
Popular software romplers, which can also be called sample-based synthesizers, are reFX Nexus, Spectrasonics Omnisphere, Native Instruments Kontakt, and UVI Falcon. 
Modern hardware examples include the Korg Kronos and Wavestate. 

Software
Flex - fruity loops
Nexus 3/4
KONTakt - native instruments
Roland Zenology
Steinberg HALion

Hardware
E-MU Proteus series
EMU orbit

Korg M1
Wavestate - korg

Kurzweil K2000, K250,

Roland U-110
Roland sound canvas
Roland JV 1080
Roland JV 1010, 2028, etc
Roland JD 800, JD 900
Roland MC 303
Roland MC 505
Roland MC 808
Roland MC 909

Yamaha XG, tg55, mu50
Yamaha Tg 33
Yamaha motif


Wednesday, 10 September 2025

TSNM buchla format - build notes - part 2


 This PCB dates from 2017 ..It's a  Mark 1
There are modern ones using Teensy 4.0 ..... Mk II
which you can still buy.

This is part two on my build notes.
Part 1 is here:










Links

This  Mk I uses the old Teensy 3.2.
....















C22, C23 and IC 6 are not needed if your PSU has +5V



C16 & C21 - are these part of the +5v section of the PCB?
I've soldered c16 in anyway.







C6 --- DNP ??? do not place?













1N5819HW 2 D1, D2 DO-41 schottky rectifiers 511-1N5819











L1 = ??
L2 = ferric bead.
These are connected in parallel ... across either side of the PCB.
Thus I used one ferric beath .. the through hole one. (L1)



Caps : 47uF x 2 


-------------








C17 - 100n (SMD ceramic)?? I think this is not right.
looks like an electro maybe 33uF ??
Is it C21 in the BOM??
-----------------------------------














MPR121 board & headers
It's a Adafruit 12-Key Capacitive Touch Sensor Breakout. This connects to the touch plates of the front panel

Cut the trace on the bottom of Teensy next to VIN pin to separate VIN from VUSB. This prevents 
powering the Teensy simultaneously from USB and the eurorack power supply. 














Teensy 3.2 





The two pots - 10K B ... linear (B103)
Encoder












position  the two displays and LEDs














The lower header is tricky.
I had to do some gentle bending of the ends.

you need to keep enough room for the two matrix displays... the legs aren't long













Bend these headers so you can solder them directly to the front panel












This is a side on view

 to be continued.....

Monday, 28 July 2025

UNO Synth Pro

 A demo of the UNO Synth Pro.

...
Thanks for holding the meeting last Tuesday Ed.
We met Chris Steller, product specialist with Sound & Music. 
Chris has a wealth of industry experience as a presenter and trainer in hardware and software music technology.