BYOC Spring Reverb User manual

Build Your Own Clone
Spring Reverb
Kit Instructions
Warranty:
BYOC, Inc. guarantees that your kit will be complete and that all parts and components
will arrive as described, functioning and free of defect. Soldering, clipping, cutting,
stripping, or using any of the components in any way voids this guarantee. BYOC, INC
guarantees that the instructions for your kit will be free of any majors errors that would
cause you to permanently damage any components in your kit, but does not guarantee
that the instructions will be free of typos or minor errors. BYOC, INC does not
warranty the completed pedal as a whole functioning unit, nor do we warranty any of the
individual parts once they have been used. If you have a component that is used, but feel
it was defective prior to you using it, we reserve the right to determine whether or not the
component was faulty upon arrival. Please direct all warranty issues to:
[email protected] This would include any missing parts issues.
Return:
BYOC, Inc. accepts returns and exchanges on all products for any reason, as long as they
are unused. We do not accept partial kit returns. Returns and exchanges are for the full
purchase price less the cost of shipping and/or any promotional pricing. Return shipping
is the customer’s responsibility. This responsibility not only includes the cost of
shipping, but accountability of deliver as well. Please contact
[email protected] to receive a return authorization before mailing.

Tech Support:
BYOC, Inc. makes no promises or guarantees that you will successfully complete your
kit in a satisfactory manor. Nor does BYOC, Inc. promise or guarantee that you will
receive any technical support. Purchasing a product from BYOC, Inc. does not entitle
you to any amount of technical support. BYOC, Inc. does not promise or guarantee that
any technical support you may receive will be able to resolve any or all issues you may
be experiencing.
That being said, we will do our best to help you as much as we can. Our philosophy at
BYOC is that we will help you only as much as you are willing to help yourself. We
have a wonderful and friendly DIY discussion forum with an entire section devoted to the
technical support and modifications of BYOC kits.
www.byocelectronics.com/board
When posting a tech support thread on the BYOC forum, please post it in the correct
lounge, and please title your thread appropriately. If everyone titles their threads
“HELP!” then it makes it impossible for the people who are helping you to keep track of
your progress. A very brief description of your specific problem will do. It will also
make it easier to see if someone else is having or has had the same problem as you. The
question you are about to ask may already be answered. Here is a list of things that you
should include in the body of your tech support thread:
1. A detailed explanation of what the problem is. (more than, “It doesn’t work, help”)
2. Pic of the topside of your PCB.
3. Pic of the underside of your PCB.
4. Pic that clearly shows your footswitch/jack wiring and the wires going to the PCB
5. A pic that clearly shows your wiring going from the PCB to the pots and any other
switches (only if your kit has non-PC mounted pots and switches)
6. Is bypass working?
7. Does the LED come on?
8. If you answered yes to 6 and 7, what does the pedal do when it is in the "on" position?
9. Battery or adapter (if battery, is it good? If adapter, what type?)
Also, please only post photos that are in focus.
Revision Notes: Rev 1.2 - Major change to PCB designed to accommodate the new
BTDR-3H reverb module.
Previous Instructions: First version reverb (3 knob version)
www.byocelectroncis.com/reverb3knob.pdf
Rev 1.0 http://www.byocelectronics.com/reverb1.0.pdf
Copyrights: All material in this document is copyrighted 2018 by BYOC, Inc.

Spring Reverb Kit Instruction Index
Parts Checklist……………………….................…..page 6
Populating the Circuit Board…….................……..page 8
Main PCB Assembly..................................................page 20
Wiring……………………………….........................page 25
Installing the IC/Finishing up………………….......page 30
Operation Overview...................................................page 31
Schematic.....................................................................page 32

Parts Checklist for the Spring Reverb Kit
Resistors: Metal Film (5-band) Carbon (4-band)
1 - 220R (red/red/black/black/brown) (red/red/brown/gold)
1 - 1k (brown/black/black/brown/brown) (brown/black/red/gold)
3 - 4k7 (yellow/purple/black/brown/brown) (yellow/purple/red/gold)
3 - 10k (brown/black/black/red/brown) (brown/black/orange/gold)
5 - 22k (red/red/black/red/brown) (red/red/orange/gold)
1 - 100k (brown/black/black/orange/brown) (brown/black/yellow/gold)
1 - 470k (yellow/purple/black/orange/brown) (yellow/purple/yellow/gold)
1 - 1M (brown/black/black/yellow/brown) (brown/black/green/gold)
Capacitors:
1 - 10n or .01µfilm (103)
1 - 22n or 0.022µfilm (223)
2 - 100n or 0.1µfilm (104)
1 - 1µfilm (105)
2 - 10µf aluminum electrolytic
2 - 100µf aluminum electrolytic
Diodes:
1 - 1N4001 (larger black plastic with silver stripe)
IC's:
2 - TL072 or similar dual Opamp
2 - 8 pin sockets
1 - Belton Digi-log BTDR-3H Reverb Module
1 - 78L05 5volt regulator

Potentiometers: SNAP THE SMALL TABS ON THE TOP OF THE POTS OFF WITH A
PAIR OF NEEDLE NOSE PLIERS
1 – B50k (REVERB)
1 – B10k Dual Gang (DWELL)
Hardware:
1 - predrilled enclosure w/ 4 screws
1 – BYOC Spring Reverb kit circuit board
1 - 3pdt footswitch
2 - knobs
1 - AC adaptor jack
2 - ¼”Enclosed jacks
2 - Internal Tooth Lock Washers
1 - battery snap
1 - red LED
hook-up wire

Populating the Circuit Board
Step 1: Add all the resistors. Resistors are not polarized and can be inserted in either
direction.

Step 2: Add the 1n4001 diode. Be sure to match the end of the diode with the
stripe to the layout on the PCB. The striped end should go in the square
solder pad.

Step 3:Add the 8 pin IC sockets. ONLY SOLDER THE SOCKETS!
NOT THE ACTUAL IC! This is a socket. The sockets get soldered to the
PCB. The ICs get inserted into the sockets. The actual IC chip itself, never
gets soldered. You will insert the IC into the socket after the entire pedal
has been built. Orient the sockets so that the end with the notch matches up
with the notch on the layout.

Step 4: Add the film capacitors. These are non-polarized so it can go in either direction.

Step 5: Add the voltage regulator. Insert it into the PCB so that the flat side
of the component matches up with the flat side of the PCB layout.

Step 6: Add the aluminum electrolytic capacitors. These are polarized, meaning there is
a positive and negative end. The positive side will have a longer lead and goes in the
square solder pad. The negative side will have a shorter lead and a stripe running along
the body of the cap, and goes in the round solder pad.

Step 7: Add the battery snap. Thread the solder ends of the battery snap into the strain
relief holes from the bottom solder side of the PCB and out through the top. Insert the
solder ends of the battery snap wires into the topside of their respective solder pads.
Solder on the bottom side of the PCB. Remember the red wire goes in the “+” hole and
the black wire goes in the “-” hole.

Step 8: Add wires to the IN, OUT, RING, and two Ground eyelets. Start by cutting four
2.5” pieces of wire, and one 1.5” piece. Strip 1/4” off each end and tin the ends. Tinning
means to apply some solder to the stripped ends of the wires. This keeps the strands from
fraying and primes the wire for soldering. Solder a 2.5” piece of wire to each of the IN,
OUT, and Ground eyelets on the PCB. Solder the 1.5” piece to RING eyelet on the PCB.
Load the wires in from the top and solder on the bottom of the PCB.

STEP 9: Add the Reverb Module to the underside of the PCB. BUT FIRST!!!! Take a
break. Once you've soldered the reverb module in place, you will have locked many of
the components that are on the other side of the PCB in. And to get to them, you'll need
to desolder and remove the Reverb Module. It's not the end of the world if you do, but
you want to avoid having to desolder and fix mistakes whenever possible. So take a rest
at this point. Then come back and check your work so far. Are you absolutely certain you
have all the resistors and capacitors in their correct spots? How do your solder joints
look?

Once you've done this, install and solder the Reverb Module to the underside
of the PCB. There is only one way the Module will fit in the PCB if you are
inserting it into the underside. Solder the 10 pins on the topside of the PCB.

Main PCB Assembly
Step 1: Mount the AC adapter jack to the enclosure. Your kit may come
with either an external thread or internal thread. Don’t get confused by this.
They still function exactly the same. You just thread the external nut on the
outside and the internal nut on the inside. The picture below is of an internal
nut jack.

Step 2: Flip the PCB over so that the bottom or solder side is up. Insert the
B50k potentiometer (Reverb), B10k dual gang potentiometer (Dwell), and
the LED into the bottom side of the PCB. DO NOT SOLDER ANYTHING
YET!!! The LED will have one lead that is longer than the other. THIS
WILL GO INTO THE SQUARE SOLDER HOLE.

Step 3: Hold the PCB in one hand so that the component side of the PCB is
in the palm of your hand and the bottom side with the pots, toggle switch
and LED is facing up. Now use your other hand to guide the predrilled
enclosure onto the PCB assembly so that the pots and LED all go into their
respective holes. Once the PCB assembly is in place, secure it by screwing
on the washers and nuts for the pots. Only tighten them with your fingers.
You do not want them very tight yet.

Step 4: Turn the entire pedal over so that the component side of the PCB is
facing up. Lift the PCB up off the pots about 2mm just to make sure that the
back of the PCB does not short out against the pots. Make sure the PCB is
level and symmetrically seated inside the enclosure.
Step 5: Solder the pots and LED. You will solder these parts on the
component side of the PCB. After you have soldered them in place, be sure
to tighten up their nuts.
Step 6: Connect the TIP (negative) terminal of the DC adaptor jack to the
eyelet on the PCB labeled “-“. Connect the SLEEVE of the DC adaptor jack
to the eyelet on the PCB labeled “+” farthest to the right. Connect the battery
disconnect terminal of the DC adaptor jack to the second eyelet on the PCB
labeled “+” located in the middle of the other two eyelets .See diagram on
the next page.