UK-electronic Miniverb MEK Sounddesign User manual

UK-electronic ©2015
Manual Miniverb V2 with the Belton BTDR-2-X Modul
Page 1…2.........................................Introduction, Short circuit description
Page 3…4.........................................Basics
Page 5…6.........................................Bill of material
Page 5... .........................................Soldering the pcb
Page 8....11.......................................Drill template, Circuit, External wiring
2015 © UK-electronic

Thank you for choosing a kit from our company. The kit has been compiled with all diligence for you
and tested. However, should any deficiencies occur with respect to the quality or errors in the
description, we would ask you to inform us of this mailto:(techni[email protected])
hort circuit description :
In the below-described kit it comes to building a digital reverb pedal, which is used as a basis, the
BTDR- module of Belton / Accutronic.
The heart of the circuit is the BDTR-2 module which contains all of the components, such as A / D
converter, delay, and D / A converter incl. the associated filter (3xPT2399). The module has as its
predecessor 2 separate audio outputs, one of which can use a sound control (tone control) is unused.
The module requires only a voltage of + 5V that is generated on the circuit board by a 8L05 from the
9V supply voltage.
The only active components, a dual TL0 2 op amp is used, which amplifies the input signal by a factor
of 2 and summed at the output with the original signal.
As controls one potentiometers are used, which the reverb level (Mix). Switching the effect onf/off
with a hardware True bypass using a 3PDT switch and LED indicator.
Due to the compact double side through-hole board, the structure is relatively simple and is described
on the following pages.
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Some connection of components
TL072
Widerstand DPDT chalter
BC 549C
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Color table for resistors MF207 FTE52 1% and a example
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Bill of material
Quantity Description
Resistors
1 22R (red/red/black/gold/brown)
1 1K (brown/black/black/brown/brown)
1 2K2 (red/red/black/brown/brown)
2 5K1 (green/brown/black/black/brown)
3 10K (brown/black/black/red/brown)
1 20K (red/black/black/red/brown)
1 22K (red/red/black/red/brown)
2 100K (brown/black/black/orange/brown)
1 200K (red/black/black/orange/brown)
1 2M2 (red/red/black/yellow/brown)
1 Trim pot CA6V 10K
Capacitors
1 Ceramic capacitor 4 pF (4 )
1 Ceramic capacitor 100pF (101)
1 MKT 0.022µF = 22nF (223)
2 MKT 1µF = 1000nF (105)
1 Elektrolytic capacitor RASM 4 µF/16V
1 Elektrolytic capacitor RASM 100µF/16V
1 Elektrolytic capacitor RA 220µF/ 10V
Diodes
1 Shottky-Diode 1N581 or 5818 (Cathode = line)
1 LED 3mm Red Low current
chaltkreise
1 Reverb Modul Belton BTDR-2-X (your choose)
1 Voltage regulator 8L05- 5V/100mA
1 Dual OPV TL0 2
Potentiometer
1 16mm Potentiometer 50K-B (linear) – Reverb
Mechanic
1 Printboard Miniverb V2 DKL
2 Audio jack PCB-version (Mono- Output/Stereo- Input)
1 3PDT Switch Standard SL
1 DC-jack ROKA isolated pcb-version
1 LED spacer 22mm
1 Some coloured wire/ isolated hose/ heat shrink
1 Battery connector soft
1 Socket LC 08
Soldering tin is not part of delivery
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oldering the Printboard
Back to the top you should start with the lowest components to be fitted, ie first, the resistors then the
capacitors. In the next level then the IC sockets, the voltage regulator. The BTDR-2 module at the last
(component side). Left are the names of the components, on the right picture the values.
One should make things quiet and rather even look because it is not as easy for inexperienced to
switch to a through-hole printed circuit board, a component.
If everything is assembled and the potentiometer wired, they are soldered into the PCB only a.
Thus, the majority would already be done. Who has opted for a pre-drilled housing needs now just
mount the Potentimeter and place the board about it. When the board you have to press a bit, and
before the strands sort something neatly under the board, since it at the point where the dual
potentiometer sits but is relatively scarce. In any case, the board must sit so that when you screw the
peripheral groove does not touch any pins on the board.
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The following drill diameter should be used:
Potentiometer: to 8mm
Jacks: 11mm
3PDT switch 13 to 14mm, making it possible to better fit the board if the holes of the jack bushes not
agree 100%.
DC jack: 10mm
LED: 3mm
As knobs which are used for 6.35mm shaft with set screw. The trimmer potentiometer (10K) is used to
balance the volume between the original signal and reverberated signal. Through the hole in the board
is accessible after installation of the board with a small Phillips screwdriver.
The holes for the jacks are 12mm 11mm from the bottom edge, the DC jack. The distance phone jack 
DC jack is 18.5mm.
Technical design subject changes!
2015 © UK-electronic

+-
A2
A3
A1
B2
B3
B1
C2
C3
C1
S
R
T
SN
RN
TN
S
R
T
SN
RN
TN
AE
S
2
3
1
6
5
7
84
IN
3
+5V 1
OUT1 6
OUT2 5
PGND
2
SGND
4