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VAMISOUND V-414 Building Instructions

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V-414
BUILDING
INSTRUCTIONS

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Summary of Contents for VAMISOUND V-414

  • Page 1 V-414 BUILDING INSTRUCTIONS...
  • Page 2 V-414 BUILDING INSTRUCTIONS Dear friend, first of all thank you for your support and choice of the VAMISOUND product. We wish you a happy DIY and the joy of a new microphone in your arsenal!! Jan and Milan...
  • Page 3 Before you start building your new microphone please carefully read this building instructions. Attention: V-414 is not DIY beginners project. This is due to the fact that the circuit is very complex and boards designed with very limited space in the microphone body in mind.
  • Page 4 VAMISOUND V-414 set includes main parts board, transformer board, switch board, three switches and four teflon pins. Start fitting the transformer board with resistors and two inductors.
  • Page 5 Continue with soldering two red film capacitors, two blue ceramic capacitors, three electrolytic capacitors and two transistors. Next up is the main parts board with point to point HiZ section. Soldering the HiZ section might seem a bit more challenging but with a little patience you can do it.
  • Page 6 As you can see in the picture, on the gate leg of the fet transistor there are three ceramic capacitors, one resistor and also two film capacitors soldered „in the air“. There are also four teflon pins.
  • Page 7 After completing the HiZ section clean the entire area with isopropyl alcohol. Use cotton cleaning sticks. Make sure there is no flux residue or other contaminants on the joints.
  • Page 8 After cleaning, fit the rest of the board with resistors, capacitors and last transistor.
  • Page 9 Next in line is switch board. Solder the three switches into place. On the 4 position pattern switch use pliers to snap one pin protruding from the metal body to fit the switch board. Try to insert this switch into the pads on the board before soldering and it will be immediately clear.
  • Page 10 Carefully but thoroughly clean all plates with isopropyl alcohol. Pay particular attention to the switches to prevent isopropyl alcohol from entering them. Everything is now thoroughly cleaned so we can move on to more pleasant things. Installing the famous Moby’s transformer is always a fantastic experience. Insert the transformer into the cutout of the board and carefully pull its cables through to the other side of the board.
  • Page 11 Again, use the remaining resistors/capacitors legs to attach the transformer to the board. Make sure you tighten these well to keep the transformer from slipping. Solder the transformer cables to their pads on the board. P+ = primary winding start (blue cable on Ü54 transformer), P- = primary winding end (black cable), S+ = secondary winding start (red cable), S- = secondary winding end (white cable) and CT = secondary center tap (green wire).
  • Page 12 Do the following step very carefully because you will be installing the capsule respectively its stand on a metal plate. Protect the capsule with an empty parts bag. Before doing so unscrew this plate from the 414 body chassis of course. Thread the cables leading from the capsule through the holes in the plate to facilitate later work.
  • Page 13 Install two 10mm long M3 screws into the two holes in the switch board. Secure them with a nut. Insert the entire switch board into the metal plate that holds the capsule. Be careful not to damage the capsule.
  • Page 14 It is not necessary to screw the two M3 screws to the metal plate from above. The switch plate will hold firmly enough when all three plates are assembled together.
  • Page 15 In the next step mount the transformer board on the 7 resistor legs protruding from the switch board. It may be a good idea to unscrew the bottom of the 414 body for easier installation. Don't solder the two boards together yet.
  • Page 16 Focus on the switches and their levers because already at this stage you can adjust the height of the switch board from head basket. Also you can now put the metal microphone body on the chassis and check that the switches fit perfectly in their holes. After setting the height of the switch board you can finally solder the two boards (switch board and transformer board) together.
  • Page 17 Solder the wires to the XLR insert pins. The length of the cables is approximately 5cm. Connect pin 1 to the ground eyelet on the insert. The resistor leg will serve you for this again. Solder the three cables to the board. In the picture you can also notice the connection of the transformer cables.
  • Page 18 In the next step solder three cables to the board that will later connect the transformer board to the main parts board. Insert the cables from the inside into the pads marked I, II and III. Solder another three cables to the switch board (P1, P2, P3 pads) which will later connect the switch board to the main parts board.
  • Page 19 It's time to connect the switch board to the main parts board. Connect the cables cables leading from the switch board to pads P1, P2 and P3 which are on the main parts board too. Also solder the three remaining cables leading from transformer board to pads I, II and III on the main parts board.
  • Page 20 After soldering the five connection points we have all three boards firmly connected to each other and the circuit is almost complete. All that's left is to connect the four cables from the capsule. Solder the cable from the front diaphragm of the C12 capsule to the „FM“...

  • Page 26: Additional Info

    WIRRING INFO 1) Connect transformer board and main parts board via pad I, II and III………. I=>I II=>II III=>III Use three wires for this. 2) Connect main parts board to switch board. Use three wires and interconnect pads P1, P2 and P3 on main parts board to pads P1, P2 and P3 on switch board.

  • Page 27: Bill Of Material

    BILL OF MATERIAL Part Value Tol. Min.V Dimmensions link 1 link 2 notes olt. Inductors 680uH mouser link 680uH mouser link Resistors 10 % 6.5x2.5mm mouser link 121K mouser link 121K mouser link mouser link 13K3 mouser link * FET1 bias setup 56K2 mouser link 2K15...
  • Page 28 Part Value Tol. Min.V Dimmensions link type notes olt. Capacitors 15pF mouser link ceramic 39pF mouser link ceramic 150pF mouser link ceramic 10uF 4x7mm mouser link electrolytic No larger capacitor. 3.3uF 4x7mm mouser link electrolytic 11mm long version won´t fit. 6.8uF 5x7mm mouser link...
  • Page 29 Part Value link 1 link 2 Tranzistors PF5102 banzaimusic link www.ebay.com BC550C mouser link 2SK30-O www.ebay.com BC550C mouser link Capsule Tim Campbell CT12, 3U Audio C12 *Isolated backplates are required for 4 wire capsule set up. Others Teflon pin 4pcs included in kit mouser link Cables...