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Table of Contents
Serge RING
SERGE
Ring Modulator 2017
(RING)
signal levels (unlike conventional modulators where distortion increases at low levels) .
•
80 dbs OF CARRIER SIGNAL REJECTION.
•
INAUDIBLE NOISE OUTPUT .
•
NO SQUELCH CIRCUIT IS REQUIRED due to the low noise
and "pumping" effects are totally absent.
•
INTERNAL WAVESHAPING OF CARRIER to add to modulation effects.
•
The sum total of these design improvements is a Ring Modulator capable of treating the most subtle
acoustical signals, without the coloration typically associated with even the best previously available
ring modulators.
The versatility of the Serge Ring Modulator is enhanced by the added feature of voltage and manual control
of the entire spectrum of modulation possible: from zero modulation (i.e. the original, un-treated input
signal) through amplitude modulation to full ring modulation. This allows many shadings of effect, manual or
automatic with voltage controls. The ability to control the Carrier level manually and through voltage control
allows the output to be level controlled, as well. -Through the use of an internal signal processor for the
Carrier, additional effects can be produced by waveform modification of the carrier signal. When the module
is set to full Ring Modulation from the lower knob or voltage control, the output signal contains the sum and
for Eurorack
The 2017 RING is an improved version of the late Serge
Ring Modulator (R9), designed by Serge himself for
Random*Source in 2017, more than 40 years after the
launch of the Serge Modular system.
To quote the Serge 1983 catalogue:
"Our new RING MODULATOR (RING) is a brand
new design which incorporates greatly improved
specifications . Features include the following:
•
RANDOMSOURCE.NET
RANDOM*SOURCE
A VERY CLEAN SOUND down to very low
therefore annoying signal dropouts
1
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Table of Contents
Related Manuals for Random*Source Serge RING
Summary of Contents for Random*Source Serge RING
- Page 1 The versatility of the Serge Ring Modulator is enhanced by the added feature of voltage and manual control of the entire spectrum of modulation possible: from zero modulation (i.e. the original, un-treated input signal) through amplitude modulation to full ring modulation.
- Page 2 Serge design. The Random*Source RING kit consists of a front panel and a pcb set with all SMT parts preinstalled. A couple of through-hole parts (mostly capacitors) have to be installed (1uF caps only if not already installed in SMT!).
- Page 3 RANDOM*SOURCE Serge RING Please note: • The RING requires careful calibration for best results. A 2-channel oscilloscope is higly recommended, if not required. • The module requires a couple of larger capacitors (10uF and 4.7uF) and provides footprints for WIMA film caps. You should be able to substitute other types (e.g. bipolar electrolytics for audio use), however, these are untested. • If the main pcb already includes 3 large SMT capacitors in (1uF, black and silver cubes) - most likely this is the case -, you do not need to install any 1uF capacitors in through-hole - i.e. you can leave the corresponding 1uF through-hole footprints empty. • Use antistatic precaution - try to avoid touching the SMT parts. • Board is designed to be powered by a +/-12V stabilized PSU only. (+/-15V is untested). Bill of Materials Capacitors (min. 35V, 5mm lead spacing)
- Page 4 RANDOM*SOURCE Serge RING Building This is simply a suggestion - you might find a different workflow more practical: Use a side-cutter to separate main pcb and component pcb. Solder the power connector and other through-hole parts to the main pcb. Add the spacers to the panel pcb and install the pin (SIL) headers so that the 2 pcbs form a nice sandwich. Pay attention to the direction the pcbs are facing - the SMT parts have to be inside the sandwich. It is recommended to have the female headers on the panel pcb and the pins on the main pcb. If you have double-checked that the positioning is correct, solder the pins connecting the 2 pcbs. Carefully seperate the 2 pcbs again and mount the Thonkiconn jacks and the pots onto the panel pcb. Pots should sit on the side facing the front panel (as marked on the board). Don‘t solder them in yet. Carefully mount the panel pcb (with the pots etc. inserted) onto the front panel. You may then have to wiggle each pot a bit to get the pots through. Make sure the threads of the pots go through completely and the pots sit right at the front panel. Screw the jacks and pots to the panel to make sure of that. Once everything is nicely in place, solder the pots and jacks (while the front panel is attached). Make sure you don‘t spill any solder on the SMT parts. Mount the main pcb again and fasten it using the spacers. Connect a power cord supplying +12V, GND, GND, -12V to the power-header on the main board and double check the direction of the power header before you turn power on. 10. You should be ready to calibrate and go :-) Optional: MODE knob taper adjustment You might notice that depending on calibration the spot where the MODE knob reaches exactly the AM position (before fading to Ring modulation) is slightly before the center of the knob.
- Page 5 RANDOM*SOURCE Serge RING Calibration Feed a 5V pp signal into SIGNAL (e.g. Triangle or SAW from a DSG) and another 5V pp signal into CARRIER. The SIGNAL should be in the audio range, but not too fast, as waveforms may change otherwise, 1-2 kHz should do it.
- Page 6 - full CW will deliver full ring modultion as shown in (A). Tips and Tricks • Traditionally sine waves are considered best for ring modulation (as they have no harmonic overtones), however, try saw or square / pulse waves for interesting, rich results. • A DSG mk2 is a great partner as it allows to go up to about 12kHz and provides various outputs. Try combining the RING with FM on the DSG for amazing effects. • You can feed a negative voltage as Mode CV, i.e. bipolar signals work as well - turn the MODE knob up for this as the negative CV acts as if you turned the MODE knob down. • Try running one of the input signals through a waveshaper (e.g. Serge VCM or TWS) for interesting ef- fects, especially if you feed two signals that are almost identical in frequency - that can generate very slow, complex morphing sounds. Last edited on 18. March 2018, 10:20 PM SERGE Modular by Random*Source. Module and circuit under license from Serge Tcherepnin. All rights reserved. RANDOMSOURCE.NET...
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