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Copyright 2020 by Synthetic Sound Labs LLC  -  3650 Digital Sequencer 

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Pressing a NOTE key that is 

below

 the root key, the CV OUT will be transposed 

down

 by however many steps the 

key you pressed is below the root key. 

To transpose farther than what is currently displayed on the keyboard, you can use the OCTAVE UP and OCTAVE 
DOWN buttons to shift the keyboard octave.  Select the octave you want, then press the key for the amount you 
want to transpose.  You can also instantly jump to a transpose key in another octave (one up or one down) by 
holding one of the OCTAVE buttons and pressing the desired key. 

There are a few other buttons that work in LIVE TRANSPOSE mode that might come in handy during a live 
performance: 

 

REST:  Makes the next step a REST (one time only) 

 

LOOP:  Loops back to the beginning of the song or sequence on the next step (one time only) 

 

ACC: 

Turns on ACC OUT on the next step (one time only) 

Important Notes: 

You cannot transpose past the range of the CV output.  For example, if you have a note in your sequence that is 

the lowest C, then you try to transpose down from there, the output isn’t going to get any lower.

  For maximum 

transposeability, we recommend programming your sequences in the middle octaves. 

Also, if you use the RUN button to pause the sequencer then start it again, whatever transpose amount you set 
will be retained.  If you press RESET to go back to the beginning of the sequence, then the transpose amount will 
be cleared. 

LIVE EDIT 

Normally when a sequence is running, the NOTE buttons do not do anything.  With LIVE EDIT mode enabled, you 
can use the NOTE buttons to program your sequence on the fly. 

Purpose 

Entering notes into a running sequence. 

Default 

Disabled / Off 

Operation 

To enable or disable LIVE EDIT mode, hold PROG/RESET down and tap the ACC/[EDIT] button.  The ACC LED will 
blink twice for enabled and flicker for disabled. 

When the sequencer is running, pressing a NOTE button will program that note into the current step.  You can 
also program a REST or a LOOP during live editing. 

Important Notes: 

The changes you make using LIVE EDIT are not 

written to the sequencer’s non

-volatile memory until you 

pause/stop the sequencer.  Do no

t disconnect power while it’s running

or you’ll lose your changes!

  (This does 

not apply to using the normal PROGRAM mode; those changes are saved immediately.) 

RUN / RESET MODE 

This is another mode you can enable for START IN.  When enabled, the sequencer starts when START IN goes 
high and resets when it goes low.   

Summary of Contents for SSL 3650

Page 1: ... accessible trim pot Sequences can be set to any length up to 16 steps by using LOOP feature Setting a step to REST holds previous pitch and doesn t fire PULSE out Setting a step to SLUR changes to the new CV and doesn t fire the PULSE out In Standby mode sequencer can be used as a tiny keyboard without altering programmed sequences 7 sequence memories with up to 16 steps per sequence 5 song memor...

Page 2: ... LOOP ACC In addition to standard notes you can also program a REST LOOP or ACC into a step REST Replaces the selected note A REST step holds the previous note and does not fire the gate LOOP Replaces the selected note A LOOP step sets the sequence back to step 1 You can use this to create any length sequence you want For example if you only want steps 1 13 in your sequence you will make step 14 a...

Page 3: ...nal The 3650 includes a handy but somewhat limited internal clock which is activated when the sequencer is first powered on or after a soft reset For greatest flexibility you may wish to consider using an external clock via the CLOCK IN jack When an external clock pulse is received the internal clock is automatically disabled To reactivate the internal clock press and hold the RESET button for abo...

Page 4: ...song memories available which can be used to string together up to 16 sequences in any order If the entire row of black keys is lit or flickering you are in SONG mode The steady LED indicates the currently selected song Each song step contains one sequence When running and the current sequence has completed the sequencer will advance to the next song step and play the sequence it contains To selec...

Page 5: ...uttons for about 1 second the note LEDs will flash to let you know when the copy has been performed The copy always goes from the FIRST SECOND button you press You can t copy songs to sequences or sequences to songs Clearing a Song or Sequence All the songs and sequences in the sequencer always exist so generally if you want to wipe out an existing song or sequence you can just modify them or prog...

Page 6: ...timings This works best with steady clocks Mode 1 is usually best to use for rapidly changing clock rates 1X MODE Purpose Normally when 1X mode is disabled and the playing a sequence reaches stage 16 or whichever LOOP step you have set it will loop back to step 1 and begin playing the sequence again Enabling 1X mode is useful when you are cascading multiple sequencers for example as explained unde...

Page 7: ...uencer without having to press STEP UP in between each step making initial programming of a sequence easier Default Disabled Off Operation When enabled and you are programming a sequence entering a NOTE or REST or LOOP into a step will automatically advance to the next step To toggle AUTO ADVANCE mode press and release both yellow STEP TEMPO AUTO ADV buttons The STEP 16 LED will blink twice when e...

Page 8: ...rd On Root key in center of F note keyboard On Root key at top B note of keyboard Off Disabled The LOOP LED will flash twice for each ON mode along with the selected root key and will flicker when LIVE TRANSPOSE mode has been turned off When LIVE TRANSPOSE is ON instead of the usual current note display the NOTE and OCTAVE LEDs will display the transpose status Steady NOTE LED Root key Blinking NO...

Page 9: ...aximum transposeability we recommend programming your sequences in the middle octaves Also if you use the RUN button to pause the sequencer then start it again whatever transpose amount you set will be retained If you press RESET to go back to the beginning of the sequence then the transpose amount will be cleared LIVE EDIT Normally when a sequence is running the NOTE buttons do not do anything Wi...

Page 10: ... ACC and hold for 1 second The ACC LED will BLINK twice to let you know that CLOCK OUT is enabled and will FLICKER when it has been disabled Important Notes ACC will no longer be sent out this jack but it can still be programmed into sequences The ACC jack will still operate normally when using an external clock CHANGE ON CLOCK MODE Purpose Normally if the 3650 is running and you select a new song...

Page 11: ...a voltmeter to the CV OUT jack of the sequencer you want to calibrate 2 Press RESET to make sure the sequencer is in Ready or Program mode either will work 3 Press the OCTAVE UP button a few times to set the keyboard to the highest octave OCTAVE UP LED ON steady 4 Press the NOTE C button 5 Adjust the trim pot until the meter reads as close to 4 800V as you can get it 6 Check the C notes on the low...

Page 12: ...y Synthetic Sound Labs LLC 3650 Digital Sequencer Page 12 Copyrights Trademarks This document is copyright 2020 by Synthetic Sound Labs LLC Firmware by Division 6 Buchla is a trademark of Buchla Associates Berkeley CA ...

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