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Magnum 

Building instructions 

V1.0

 

 

 

 

Summary of Contents for Magnum

Page 1: ...Magnum Building instructions V1 0 ...

Page 2: ...n or endorsement is implied 2 Table of contents Components 3 PCB layout 3 Building sequence 4 Modifications 5 Diodes and Op amp 5 Clipping Diode Configurations 5 Off board wiring 6 Troubleshooting 7 Schematic 8 Read this entire manual thoroughly before you start building the effect Especially the modification part Decide before building the effect which mods you want to try so that you do not need...

Page 3: ...ima D11 1N5817 C5 470n SMF MKT Wima DIP1 DIP2 C6 4u7 Electrolytic 25V IC1 JRC4558 C7 47n SMF MKT Wima IC2 LT1054 C8 2u2 Electrolytic 25V P1 A250k Gain C9 10u Electrolytic 25V P2 A25k Bass C10 47u Electrolytic 25V P3 B10k Treble C11 100n SMF MKT Wima P4 B100k Volume C12 47u Electrolytic 25V R1 1M 1 metalfilm D1 1N34A MLCC Ceramic R2 470k 1 metalfilm D2 1N914 Germanium Diode R3 4k7 1 metalfilm D3 1N...

Page 4: ...ed a 20 SIL break off the sockets and solder them to the board Note Glass diodes are fragile Do not expose them to heat for too long or they ll break Start by soldering the jumper if needed resistors and then the diodes if not socketed Solder the IC socket next and then the small SMF MKT capacitators the DIP switch the electrolytes and finish with the C3 silver mica If you want to use a regular 22...

Page 5: ...e any dual op amp of your liking Try the JRC4558 JRC4559 AD712 MC1458 TL072 OPA2134 OP275 etc etc Clipping Diode Configurations There are really a lot of ways to configure the diodes in the soft clipping section of this effect There are 2 diode sections that you can load with whatever 4 diode combination you like The Dip switch is added so that you can switch between symmetrical and asymmetrical c...

Page 6: ...which on a potentiometer You can break off the pin I marked with the yellow circle with a small pair of pliers SW1 is a regular DP3T on off on switch with solderlugs and SW2 is a PCB mount version SPDT switch Place the potentiometers and switches in the predrilled enclosure and then insert the PCB Once the PCB fits nicely and is not touching the enclosure solder the potentiometers and switches to ...

Page 7: ...tly and or soldered correctly on the board Check that you oriented the capacitors IC s transistors and diodes the right way SMF MKT and ceramic capacitors as well as resistors do not need to be oriented Check if you used the correct values of the components For resistors you can look here http www diyaudioandvideo com Electronics Color Double and triple check your soldering A loose or cold solder ...

Page 8: ...s are mentioned solely for circuit identification and where applicable their trademarks are the property of their respective owners who are in no way associated or affiliated with the author No cooperation or endorsement is implied 8 Schematic ...

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