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INamp V1.4 - ASSEMBLY GUIDE Rev. Jun 2019

THANKS FOR CHOOSING ONE OF OUR KITS!

This manual has been written taking into account the common issues that we often find people 
experience in our workshops. The order in which the components are placed on the board is meant to 
make assembly as easy as possible.

Some steps are not obvious, so even if you're an experienced DIYer please read the steps thoroughly 
before starting.

If this is your first project, please read this article before you start assembling the kit:

www.befaco.org/howto/

      

This project has one main board and two control ones. Control boards are identical so you will need to 
follow the instructions twice.

GOOD LUCK!

  

 

MAIN PCB 

OPEN MAIN BOARD BAG A

 

RESISTORS

Qty Value Code

Name on PCB

2

100k

Brown, Black, Black, Orange, Brown

R2, R8

3

1k

Brown, Black, Black, Brown, Brown

R4, R9, R10

2

10k

Brown, Black, Black, Red, Brown

R1, R7 

2

220k

Red, Red, Black,Orange, Brown

R3,  R6

FERRITE

Solder the two ferrite beads by using a recycled resistor leg passed through each ferrite and proceed as 
if it were a resistor. Ferrite beads don't have polarity.

Qty Name on PCB

2

F1, F2

       

DIODES

Solder the diodes 

observing their polarity

. The black or white line on the diode must match with the 

white line on the diode symbol on the PCB silkscreen.

Qty Value

Name on PCB

2

1N5817 

D1, D2

1

Summary of Contents for INamp

Page 1: ...main board and two control ones Control boards are identical so you will need to follow the instructions twice GOOD LUCK MAIN PCB OPEN MAIN BOARD BAG A RESISTORS Qty Value Code Name on PCB 2 100k Brown Black Black Orange Brown R2 R8 3 1k Brown Black Black Brown Brown R4 R9 R10 2 10k Brown Black Black Red Brown R1 R7 2 220k Red Red Black Orange Brown R3 R6 FERRITE Solder the two ferrite beads by us...

Page 2: ...ide for help identifying capacitors http www wikihow com Read a Capacitor Qty Value Code Name on PCB 6 100n 104 C2 C3 C7 C8 C9 C12 2 47p 47 C6 C10 2 220n 220n C5 C11 ELECTROLYTIC CAPACITORS3 Values are written on the side of the capacitor Mind their polarity The long leg of the capacitor is the positive Qty Value Code Name on PCB 2 10uf 10uf C1 C4 MALE PIN HEADERS Place and solder the Male Pin Hea...

Page 3: ...104 1 22k Red Red Black Red Brown R106 TRANSISTOR Be sure they are orientated correctly The curved and flat sides of the silkscreen outline of the transistor on the PCB must match that of the transistor s body Qty Value Name on PCB 1 2n3904 Q100 FEMALE PIN HEADER Place the female pin headers at the position JP100 and solder Good job You just finished to solder components to the boards and are abou...

Page 4: ...el The procedure we will follow will be Placing mechanicals to both control boards Place these boards to front panel Place the jacks in main board then assemble main board to both control ones making sure they are flat and parallel Then screw the jacks and solder So let s go for it Remember all these steps will be performed on both control boards LED Place the LED onto control PCBs at silkscreen s...

Page 5: ...acks B Pots Make sure all of the above parts are flush with the panel then solder them Next adjust the LED so that it is flush with the panel and solder it 6 5mm JACKS and final assembly Place both jacks onto main PCB ensuring they are placed over the silkscreen markings but don t solder yet Attach main board to control boards Jacks are fitting tight but with care they will fit perfectly Then scre...

Page 6: ...ads between C11 and R10 at main board Cut the trace connecting upper and middle pad and solder central and bottom one Bridge C11 with a resistor leg or wire With these changes second channel 6 5 Jack will be linked with the output Give it a try Both Inamp channels are made around two inverting amplifier stages The value for the resistor can be changed to have a different response Take a look to Wi...

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