Oakley RM-4014 Builder'S Manual Download | Manualshive

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Oakley Sound Systems

Oakley Modular Eurorack Series

RM-4014 Ring Modulator

PCB Issue 3E

Builder's Guide

V3.1.0

Tony Allgood
Oakley Sound Systems
CARLISLE
United Kingdom

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Summary of Contents for RM-4014

Page 1: ...Oakley Sound Systems Oakley Modular Eurorack Series RM 4014 Ring Modulator PCB Issue 3E Builder s Guide V3 1 0 Tony Allgood Oakley Sound Systems CARLISLE United Kingdom...

Page 2: ...tion of the unit and the calibration procedure please visit the main project web page at http www oakleysound com ringmod e htm For general information regarding where to get parts and suggested part...

Page 3: ...mA Power is routed onto the main PCB via the usual 2 x 5 way 0 1 2 54mm header for compatibility with Euro format modular systems The top pins on the header are connected to the 12V supply Reverse po...

Page 4: ...1 500 ohms or 1 5 kilohms For capacitors 1uF one microfarad 1000nF one thousand nanofarad To prevent loss of the small as the decimal point a convention of inserting the unit in its place is used eg...

Page 5: ...IN 100K linear Alpha 16mm pot X LEVEL Y LEVEL 50K linear Alpha 16mm pot Y OFFSET Pot brackets Three off Miscellaneous Leaded ferrite beads L1 L2 2 x 5 10 way 0 1 box header PSU 0 1 8 way Molex or MTA...

Page 6: ...gnal you insert into X and which into Y Generally we will use X as our input signal sometimes called the carrier and Y as our modulator That is Y will shape X In many applications it doesn t make too...

Page 7: ...of around 1Hz It is possible to use both the AC and DC inputs simultaneously thus creating a crude two channel mixer However although no harm to the unit will come about it does cut down the overall s...

Page 8: ...t and they are also made onto the same silicon die and in the same housing thus ensuring a good thermal matching too The voltage at the top of each transconductance stage is fixed by diodes to be 1 2V...

Page 9: ...Y input voltage Thus effectively increases the gain of the left hand transconductance amplifier thus allowing the non inverted X signal to pass through to the output even when no positive Y input is...

Page 10: ...rent This should cause the power supply to go into current limit However this current may be large enough to eventually burn out the diodes and damage them The protection diodes are therefore only sui...

Page 11: ...is still at the same potential connects to the input and output sockets screen connection If you are using metal sockets this will ensure that the module panel is then directly connected to the power...

Page 12: ...onnected to the tip of the jack plug when it is inserted The third tag is the normalised tag or NC normally closed lug The NC lug is internally connected to the signal tag when a jack plug is not inse...

Page 13: ...ions of the lugs of the CV and audio output sockets that go directly to the PCB are summarised in the table below They are given in the order in which I would recommend that they be soldered Socket Na...

Page 14: ...dulator circuit and Y OFFSET is adjusting the gain of the amplification within the ring modulator Swap the input signal over to the IN X DC input This should have no apparent effect on the sound There...

Page 15: ...be found and fixed within one hour and I normally return modules within a week The minimum charge is 25GBP plus return postage costs If you have a comment about this builder s guide or have a found a...

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