Mod THE SUSPENDED CHIME User manual

1Copyright © 2016 by modkitsdiy.com
Use these instructions to learn:
How to build an effects pedal for two digital effect options (chorus & chorus/delay).
The Suspended Chime uses the Accutronics BTSE-16FX Digital Sound Effector module to provide two
effects in one pedal, chorus and chorus with delay. The blend control allows you to go from subtle to lush
chorus effect. Flip the toggle switch for chorus with a 190 millisecond delay adding spatial depth to your tone.
THE SUSPENDED CHIME (K-977)
Warning: This circuit was designed for use with a 9 VDC power supply only.
TO
AMP
IN
FROM
GUITAR
OUT
Unplug when not in use
to save battery life.
BLEND
9 VDC
CENTER (-)
ADAPTER
The Suspended
Chime
Modkitsdiy.com
Chorus & Chorus/Delay
LED
Chorus
Chorus
/Delay

TABLE OF CONTENTS
TOOL LIST ……………………………………………………………………………………….2
PARTS LIST DRAWINGS……………………………………………………………………..3 - 5
FINAL ASSEMBLY REFERENCE DRAWING…………………………………………………..6
SOLDERING TIPS ……………………………………………………………………………….7
STEP BY STEP ASSEMBLY INSTRUCTIONS …………………………………………..8 - 12
Section 1 –Mount Large Components ………………………………………………….8
Section 2 –Wire Large Components ……………………………………………………….9
Section 3 –Prepare the BTSE-16FX Module ……...………..……………………………10
Section 4 –Mount Components to Terminal Strips ……………………………………..10
Section 5 –Install the BTSE-16FX Module ……………………………………………...11
Section 6 –Finishing Up ………………………………………………………………….12
ASSEMBLY DRAWINGS (4 Drawings) ……………………………………………..13, 14
These are the last 2 pages. They should be separated and used as a reference to help assemble the
kit correctly.
2
Visit www.modkitsdiy.com and e-mail [email protected] if you have any problems when first
turning on your pedal for troubleshooting help. Remember to use caution when applying power to
the pedal to avoid electric shock.
TOOL LIST
 Wire Strippers
 Needle Nose Pliers
 Cutting Pliers
 Desoldering Pump
 Solder (60/40 rosin core)
 Soldering Station
 Phillips Head Screwdrivers
 Slotted tip screwdrivers (2 or 3 mm tip)
 Channellock Pliers (or similar type)
 Ruler
 Hobby Vise (or other means to secure box while working)

Enclosure
P-H1590BBCE-LB (1)
P-K801 (1)
Battery Clip
S-H155 (1)
¼” Mono Jack (Output Jack)
W-SC-11 (1)
¼” Stereo Jack (Input Jack)
W-SC-12B (1)
Stranded Wire (22 AWG) - White
K-PUL1569-WHITE (6 FT)
PARTS LIST 1
3
RING LUG
SLEEVE LUG
TIP LUG
SLEEVE LUG
TIP LUG
Potentiometer, 25KL
R-VAM25KL-SS (1)
#4 Screw (3/8" long)
S-HS440-38 (4)
#4 Nut
S-HHN440 (4)
#4 Lock Washer
S-HLW4 (4)
Terminal Strip with 8 Terminals
P-0802H (2)
DC Power Jack
S-H750 (1)
3PDT Foot Switch
P-H501 (1)
Knob (Scalloped Edge)
1 2 3
B25K
Terminal Strips with 5 Terminals
P-0501H01 (1)
P-0501H05 (1)
1st Lug Common
5th Lug Common
COM
1 2 3 4 5
COM
1 2 3 4 5
3/8" Lock Washer
S-HLW38 (1)

PARTS LIST 2
4
0.1µF Capacitor 100V
C-PEID1-100 (5)
104J
Light Emitting Diode
P-L400 (1)
+
-
P-Q2N5088 (2)
NPN BJT (2N5088)
2N
5088
E B C
DPDT Mini Toggle Switch
P-H541 (1)
P-QMC78L05 (1)
Voltage Regulator (78L05)
78L05
Double Sided Foam Tape (1" x 1")
(1)
S-G459
Insulating Tolex, 1 ¾” x 5"
(1)
5"
1 ¾”
0.002µF Capacitor 100V
C-PEID002-100 (1)
202J
C-ET4700-16 (1)
4700µF Polarized Capacitor 16V
Digital Sound Effector (BTSE-16FX)
P-RKBTSE-16FX (1)
CN1CN3
L-OUT
R-OUT
AGND
IN-L
AGND
3.6V
MUTE
FND-DATA
SW1 SW2 SW3 SW4
DGND
BANK
FND-CLK
5V_IN
916 15 14 13 12 11 10 18 7 6 5 4 3 2
Pin-side View
4700µF 16V

PARTS LIST 3
5
brown
black
green gold
1M
1MΩResistor ½ W
R-A1M (1)
red
red
brown gold
220
220ΩResistor ½ W
R-A220 (1)
red
black
green gold
2M
2MΩResistor ½ W
R-A2M (2)
brown
black
orange gold
10K
10kΩResistor ½ W
R-A10K (2)
red
red red gold
2.2K
2.2kΩResistor ½ W
R-A2D2K (2)
blue
grey
orange gold
68K
68kΩResistor ½ W
R-A68K (1)
red
violet
orange gold
27K
27kΩResistor ½ W
R-A27K (1)
brown
black
yellow gold
100K
100kΩResistor ½ W
R-A100K (1)
green
bluered gold
5.6K
5.6kΩResistor ½ W
R-A5D6K (1)

FINAL ASSEMBLY REFERENCE DRAWING
This is a large version of the final assembly drawing. Refer to this drawing as you make your way through each step of the instructions. Before you make a new
connection at a particular terminal or solder lug, notice how many other connections will be made at that terminal. That way you can decide whether it’s best for
you to solder the connection and leave space open for future connections or hold off on soldering until after every connection at that location has been made.
6
CN1CN3
L-OUT
AGND
IN-L
AGND
SW1
SW2
SW3
SW4
DGND
5V_IN
18 7 6 5 4 3 2
Pin-side View
916 15 14 13 12 11 10
Input Output
C
H
W
-+
1
TIPTIP
RING SLEEVE
1
2
3
7
8
9
4
5
6
1 2 3
45 6
2
3
4
5
6
7
8
9
10
12
13 14
17
19
20
21
22
23
24
26
+
2M
104J
27K
68K
2.2K
.1µ
220
.1µ
5.6K
10K
100K
1M
10K
.002µ
2M
2.2K
.1µ
2N5088
E
B
C
Q1
2N5088
E
B
C
Q2
.1µ
16
red
black
78L05
Out Gnd In
4700µF 16V

SOLDERING TIPS
1. Bend the component lead
and wrap it around the
connection point.
2. Wrap the component lead
so that it can hold itself to the
connection point.
3. Heat up both component
lead and connection point with
the soldering iron.
4. Apply solder to both
component lead and
connection point.
2. Apply fresh solder to mix in
with old solder joint
1. Heat up old solder joint
with the soldering iron.
3. Use a de-soldering tool to
remove the old solder joint
while it is heated.
De-Soldering Tip
7
It is important to make a good solder joint at each connection point. A cold solder joint is a connection that
may look connected but is actually disconnected or intermittently connected. (A cold solder joint can keep
your project from working.)
Follow these tips to make a good solder joint. Take your time with each connection and make sure that all
components are connected and will remain connected if your project is bumped or shaken.
1. Bend the component lead or wire ending and wrap it around the connection point.
Make sure it is not too close to a neighboring component which could cause an
unintended connection.
2. Wrap the component lead so that it can hold itself to the connection point.
3. Touch the soldering iron to both the component lead and the connection point allowing both to
warm up just before applying the solder to them.
4. Be sure to adequately cover both component lead and connection point with melted solder.
Remove the soldering iron from your work and allow the solder joint to cool. (The
solder joint should be shiny and smooth after solidifying.)
Cut off any excess wire or component leads with cutting pliers.
Clean the soldering iron's tip by wiping it across the wet sponge again after making the
solder joint.

SECTION 1 –Mount Large Components
Please refer to DRAWING 1 and DRAWING 2.
Orient the enclosure with the two 1/4" holes on top.
 Mount the input jack in the 3/8" hole on the left side of the enclosure with the hardware provided.
The washer goes under the nut on the outside of the enclosure. Make sure the center solder lug
of the input jack is facing up. Correct positioning of the jack makes soldering the connections
easier.
 Mount the output jack in the 3/8" hole on the right side of the enclosure. Make sure the two
solder lugs are in their most upright position before tightening the nut.
 Mount the footswitch in the 15/32" hole in the center of the
enclosure. The lock washer mounts on the inside between
the enclosure surface and one hex nut. Then the nylon
washer goes under the other mounting nut on the outside
of the enclosure. Make sure that the footswitch is oriented
to match DRAWING 2.
8
 Mount the LED in the ¼” hole in the upper right corner.
Align the LED leads so that the anode (+) lead is closer to
the top side of the enclosure as shown in Drawing 2.
The anode (+) side of the LED is
indicated by a slightly longer lead
and/or a positive sign.
LED Physical
Representation
+
-
+-
LED Schematic
Symbol
anode cathode
 Mount the toggle switch in the ¼" hole to the left of the LED. Make
sure its solder lugs are oriented as shown in Drawing 2.
 Mount the 25KL pot in the 9/32" hole below the toggle switch. Orient the pot so its solder lugs
are angled toward the right side of the enclosure as shown in DRAWING 2.
 Bend back and remove the alignment tab on the top of the pot using a pair of
pliers before mounting so that it can mount flush against the enclosure surface.
 Mount the DC power jack in the 15/32" hole on the
top side of the enclosure. Orient its solder lugs so
that the center-pin lug is facing the left side of the
enclosure.
Correct Orientation Incorrect Orientation
Alignment
Tab
 Use the 4 screws, hex nuts and lock washers to fasten the 4 terminal strips to match
DRAWING 2.
 Place the 3/8" lock washer over the pot’s shaft before inserting it through the
enclosure hole.
CENTER-PIN LUG
SLEEVE-SHUNT LUG
SLEEVE LUG
DC Power
Jack
Incorrect OrientationCorrect Orientation
Note that each terminal strip terminal has been numbered (1 to 26) as shown in DRAWING 2 and will be referred to
as a “terminal #_” when connecting different components and wires throughout the assembly instructions.
(The switch terminals work the same with respect to a 180 degree rotation).
(The switch terminals work the same with respect to a 180 degree rotation).

SECTION 2 –Wire Large Components
Please refer to DRAWING 3.
9
Stripping wire, tinning wire and soldering. Throughout these instructions you will be told to strip and tin a length of wire
numerous times. Unless noted otherwise, cut the wire to the length stated in the instructions. Then strip ¼” of insulation off
each end. Twist each end of the stranded wire, and apply a small amount of solder to each end (i.e. tin the wire ends). This
will prevent the stranded wire from fraying and will make the final soldering much easier.
Tip: Push the wires down toward the bottom of the enclosure after making the connections to leave more room for mounting
the components later in the instructions.
 Strip and tin a 1 5/8" piece of wire and connect the input jack’s tip lug to footswitch lug 2.
 Strip and tin a 1 5/8" piece of wire and connect the output jack’s tip lug to footswitch lug 8.
 Strip and tin a 1 ½” piece of wire and connect footswitch lugs 3 and 9.
 Strip and tin a 2 ½” piece of wire and connect footswitch lug 5 to terminal #3.
 Strip and tin a 3" piece of wire and connect footswitch lug 7 to terminal #16
 Strip and tin a 6" piece of wire and connect footswitch lug 4 to the LED’s anode (+) terminal.
(Connect the wire end and anode lead by bending and crimping them around each other. Solder them once
they are tightly connected to each other).
 Strip and tin a 1 ½” piece of wire and connect terminals #2 and #11.
 Strip and tin a 2" piece of wire and connect terminals #3 and #5.
 Strip and tin a 3" piece of wire and connect terminals #5 and #21.
 Strip ½” of insulation off the end of the wire spool, twist and tin it. When this tinned wire end
cools, cut off the bare portion of wire and connect it from the DC power jack’s center-pin lug to
terminal #8. (Leave room at #8 for more wire connections).
 Strip and tin a 2" piece of wire and connect terminals #6 and #8. (Leave room at #8).
 Strip and tin a 2" piece of wire and connect the DC power jack’s sleeve lug to terminal #5.
 Strip and tin a 1" piece of wire and connect the LED’s cathode (-) lead to terminal #20.
(Connect the wire end and cathode lead by bending and crimping them around each other. Solder them
once they are tightly connected to each other).
 Cut a 1 ½" piece of wire. On one end strip and tin the usual ¼”. On the
other end, strip and tin ½”. Connect the ½” end to both toggle switch lugs
2 and 5. Connect the ¼” end to terminal #19.
¼” ½”
 Strip and tin a 2 ½” piece of wire and connect the pot’s “W” (wiper) lug to terminal #25.
 Strip and tin a 1 ½” piece of wire and connect terminals #17 and #23.
 Strip and tin a 1 ½” piece of wire and connect terminals #15 and #24.

10
SECTION 3 –Prepare the BTSE-16FX Module
Six of the 16 pins will not be used: 2, 5, 7, 8, 13 and 15. To help identify these unused pins and help
prevent shorting these pins with other connections we will insulate them.
 Insulate the unused module pins:
1. Strip a piece of insulation off of the wire provided about 2 ¼” long.
2. Cut this piece of insulation into six 3/8" length pieces.
3. Push each piece of insulation onto a different one of the six
unused module pins.
 Connect the module wires:
For each of these wires, strip and tin ¼” on each end. Bend one end of
each wire to form a small hook that can be slid around each pin. You
can bend the pins out slightly to allow more room if needed. Gently
crimp the hook ends of the wires to their respective pin numbers and
solder.
Set the module aside until installation later in the instructions.
Tip: To prevent accidentally shorting adjacent pins you
may find it useful to stagger each hook’s placement on the
pins.
1. Cut five 2 ½" lengths of wire and connect one end of each to a
different one of pins 3, 4, 6, 14 and 16.
2. Cut five 3" lengths of wire and connect one end of each to a different one of pins 1, 9, 10, 11 and 12.
SECTION 4 –Mount Components to Terminal Strips
Please refer to DRAWING 4.
Connect and solder all the following components to their respective terminals as listed. (Make sure
that none of the component leads are so close together that it could cause an unintended short).
 Connect a 2M resistor from footswitch lug 1 to the input jack’s sleeve lug. Do not solder the
footswitch connection, yet.
 Connect a 0.1µF cap from footswitch lug 1 to terminal #2. Solder both connections now.
 Connect the 27K resistor from terminal #1 to #2.
 Connect the 68K resistor from terminal #2 to #3.
 Connect a 2.2K resistor from terminal #3 to #10.
 Connect a 0.1µF cap from terminal #4 to #10. (Mount this cap upside down between the two
terminal strips leaving more room for other connections).
78L05
Out
Gnd
In
 Connect the 78L05 to terminals #5, #6 and #7:
 “Out” lead connects to #7
 “Gnd” lead connects to #6
 “In” lead connects to #5
CN1
CN3
L-OUT
R-OUT
AGND
IN-L
AGND
3.6V
MUTE
FND-DATA
SW1
SW2
SW3
SW4
DGND
BANK
FND-CLK
5V_IN
916 15 14 13 12 11 10 18 7 6 5 4 3 2
Pin-side View
CN1
CN3
Stagger adjacent
hook ends.

11
 Connect the 220 ohm resistor from terminal #19 to #20.
 Connect a 0.1µF cap from the pot’s “H” (hot) lug to terminal #18.
 Connect the 5.6K resistor from terminal #9 to #18.
 Connect a 10K resistor from terminal #21 to #23.
 Connect a 100K resistor from terminal #24 to #26.
 Connect the 1M resistor from terminal #21 to #24. Tip: Connect the terminal #24 lead of this resistor
toward the bottom of the lug to leave more room for connecting Q2's collector and base leads.
 Connect the remaining 10K resistor from terminal #25 to #26. (Push this resistor down leaving
more room for the next component).
 Connect the .002µF cap from terminal #25 to #26.
 Connect the remaining 2M resistor to terminals #14 and #16.
 Connect a 0.1µF cap from terminal #16 to #17.
 Connect the remaining 2.2K resistor from terminal #12 to #13.
 Connect the remaining 0.1µF cap from terminal #12 to #15.
 Connect one of the 2N5088 transistors to terminals #10, #11 and #12 as listed below.
Terminals #10: Collector
Terminals #11: Base
Terminals #12: Emitter
2N
5088
E B C
Q1
 Connect the remaining 2N5088 transistor to terminals #23, #24 and #25 as listed below.
Terminals #25: Emitter
Terminals #24: Base
Terminals #23: Collector
2N
5088
E B C
Q2
SECTION 5 –Install the BTSE-16FX Module
 Press and hold the module down against the enclosure surface for several seconds allowing the
module to stick.
 Remove the backing from one side of the foam tape and attach it to the center of the label side of
the module.
 Remove the backing from the other side of the foam
tape and insert the module pin-side-up in the
enclosure to match the orientation of DRAWING 4.
(The module’s mounting flange on the CN3 end
should touch the top side of the enclosure).
CN1CN3 Pin Side
Label Side
Mounting
Flange
 Connect the 4700µF cap with its positive end at terminal #5 and its negative end at #19.
Positive (+) Negative (-)
4700µF 16V

12
 Connect pin 1 to terminal #9.
 Connect pin 3 to terminal #1.
Connect the BTSE-16FX module pins as listed:
Tip: Route the wires along the module surface leaving room for the battery to fit on top of the module.
 Connect pin 4 to terminal #4.
 Connect pin 6 to terminal #1.
CN1 pins
 Connect pin 9 to toggle switch lug 1.
CN3 pins
 Connect pin 10 to toggle switch lug 3.
 Connect pin 11 to toggle switch lug 4.
 Connect pin 12 to toggle switch lug 6.
 Connect pin 14 to Terminal #8.
 Connect pin 16 to Terminal #7.
SECTION 6 –Finishing Up
 Locate the battery snap connector. Connect and solder the red
lead to the sleeve-shunt lug of the power jack.
 Connect and solder the black lead of the battery
snap connector to the input jack’s ring lug.
SLEEVE-SHUNT LUG
DC Power
Jack
 If you are going to use a 9V battery, consider wrapping it in the piece of tolex provided and place
the battery on top of the BTSE-16FX module. The tolex can help prevent the battery from
moving around inside the enclosure when the cover is attached. Attach the enclosure cover
using the screws provided.
 Fasten the knob to the potentiometer shaft by tightening the knob’s set screw.
 Plug your guitar into the input jack on the right side of the pedal. This turns power on when you
are not using an AC adapter for power. When using a battery for power, remember to unplug
from the input jack of the pedal to turn it off and save battery life.
 Plug another guitar cable from the output jack (left side) to your amp’s input.
Take the time now to carefully double check your connections and make sure they match up with
DRAWING 4.

Input Output
C
H
W
B25K
DRAWING 2
DRAWING 1
TOP
3/8"
15/32"
1/8"
1/8"
1/8"1/8"
1/4"
1/4"
9/32"
3/8"
RIGHT SIDE
LEFT SIDE
BOTTOM
INSIDE VIEW OF THE ENCLOSURE
13
-+
Center-pin lug
1
TIPTIP
SLEEVE
RING SLEEVE
1
2
3
7
8
9
4
5
6
1 2 3
45 6
2
3
4
5
6
7
8
9
10
11
12
13 14
15
16
17
18
19
20
21
22
23
24
25
26
+

Input Output
C
H
W
B25K
14
-+
1
TIPTIP
RING SLEEVE
1
2
3
7
8
9
4
5
6
1 2 3
45 6
2
3
4
5
6
7
8
9
10
11
12
13 14
15
16
17
18
19
20
21
22
23
24
25
26
DRAWING 3
SLEEVE
+
CN1CN3
L-OUT
AGND
IN-L
AGND
SW1
SW2
SW3
SW4
DGND
5V_IN
18 7 6 5 4 3 2
Pin-side View
916 15 14 13 12 11 10
Input Output
C
H
W
-+
1
TIPTIP
RING SLEEVE
1
2
3
7
8
9
4
5
6
1 2 3
45 6
2
3
4
5
6
7
8
9
10
12
13 14
17
19
20
21
22
23
24
26
+
2M
104J
27K
68K
2.2K
.1µ
220
.1µ
5.6K
10K
100K
1M
10K
.002µ
2M
2.2K
.1µ
2N50
88
E
B
C
Q1
2N50
88
E
B
C
Q2
.1µ
16
red
black
78L05
Out Gnd In
4700µF 16V