Lithium Grim RossKeeled, Инструкция по сборке

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4
General guideline for components
You can use this guideline if components on the previous page are not marked as a specific type.

Capacitors: All values under 1nF should be ceramic disks. From 1nF up to 1uF should be
SMF/MKT (foil/metal film capacitors) and over 1uF use electrolyte caps (or tantalum) 16V+
rated and watch out for polarity!

Resistors: use 1% metal film for the best results.

Socket all transistors and IC. This way you can easily mod them or replace them if they break.
General building tips
For this build it is important that you match the transistors in position Q1 with Q2 an Q3 with Q4 . To
get matched transistors you can use a digital multi meter (DMM) to read out the H
fe
(amplification
factor). Matched transistors have around the same H
fe
.
Soldering this board can be complicated for some people since the solder pads are very close
together. Use a magnifying glass to make the job easier.
Start by soldering the diodes and then the resistors. Rx and Ry are optional in case you cannot obtain
150k pots for P1 and P4 . If so, you can use a more common B250k for P1 pot and place 390k resistor
in Rx. You have some more options for P4 . Either use a C100k for P4 and use a 62k for R13 and omit
Ry or use a C250k for P4 and a 390k for Rx . With the first option you keep the taper response but
lose some sweep range. The second option gives you the full sweep range but you lose some taper
response.
Now solder the IC socket and transistor sockets. Solder the small ceramic capacitator C13 next.
Solder the smallest MKT capacitors and then C2 and the electrolytic capacitors.
Finally solder the Bias trim pot VR1 . Place the IC and the transistors and you are almost ready to rock.
Besides the components mentioned in the table on the first page, you will need:

2 input jacks . 2 mono jacks if you are not going to use a battery but only the 9V adapter. 1
mono (for output) and 1 stereo jack (for input) if you will be using both a 9V battery and the
9V adapter.

3PDT footswitch (9 pins). I also carry an easy off board circuit for true bypass.

2,1mm DC jack (isolated).

9v battery clip (optional).

LED

22 gage stranded hook-up wire.

Hammond 1590B case (or similar) in your favorite color. A 1590BB will give you more room
to experiment with.