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how to make your guitar practice Tinamp - tinamps

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how to make your guitar practice TinampВ what you will need:
1. kit
2. soldering iron and glue gun
3. small flat blade screwdriver.
First, check that you have all the following components:
electronic kit bag
tin - drilled and with acoustic felt
speaker baffle - black mountboard
battery clip - with red and black wires
speaker cable - double
power switch cable - single
on/off toggle switch
2 knobs
If any part is missing let us know at
В Recommendation: read ALL of the following instructions before you get started. В В Step 1 - making the amp
Clear a flat workspace with good lighting and your soldering iron near to hand (don’t switch on yet).
Empty the contents of the electronics kit bag being careful not to lose the smaller components. Separate the large
components - board, socket, potentiometers - from the smaller components - resistors, capacitors, etc.
The amp kit we have chosen is by Nightfire Electronics model #1127 with LM386 amp. Familiarise yourself with the circuit
diagram. Note: all the resistors are labelled R1, R2 etc and capacitors are labelled C1, C2 etc.
Take a look at the Printed Circuit Board (PCB). You can see how it also is labelled with R1, C1 etc. indicating the position of
each component.
We recommend you start with a �dry run’ - positioning the components one at a time in their appropriate location. When you
are happy you know where everything goes - turn on the soldering iron, use non-lead solder and don’t forget to have a wet
sponge handy to clean and cool the tip as you go.
Start with the small components placing, soldering and snipping the excess legs off. If you are new to soldering components
on a PCB you may find this video from Kitronik helpful -
Step 2 - glueing the speaker
Turn the glue gun on. Never touch the nozzle or the hot glue.
Place the black speaker baffle face down. Place the speaker - magnet uppermost - in the
cutout in the baffle.
When the glue gun is up to the right temperature and the glue is ready to flow squeeze a bead
of glue around the circumference of the speaker so that half the glue is on the baffle and half
is on the metal rim of the speaker like this:
You may find it easier if you stand up and glue from above rather than from a seating
В Step 3 - making the switch
You will need the battery clip with red and black wires, the short single wire and the
switch. Remove the nut and washer from the barrel of the switch and put to one
Solder one end of the short wire to one of the terminals on the switch (it does not
matter which one).
Solder the black wire from the battery clip to the other terminal on the switch.
Insert the red wire from the battery clip into the +ve power connector on the PCB
and secure with the screw.
Insert the other end of the short wire from the switch into the -ve power connector
on the PCB and secure with the screw.
At this point it is a good idea to insert the two speaker wires into the speaker
connector on the PCB - it does not matter which way round they go. We will solder
the other end of the speaker wires to the speaker later.
Step 4 - assemble the PCB in the tin
OK - this is the tricky bit. Remove the screw nut from the guitar input socket and put to one
side. Now you are going to fit the PCB assembly into the tin. The secret is in the angle of
inserting the 2 potentiometer barrels (tone and volume) into the holes in the tin … and if
you get the angle right you can guide the guitar input socket into its hole. Its tricky because
the thread of the socket wants to bind on the edge of the hole. It might need a little
encouragement. And you can flex the tin just a little from the inside with your thumb.
When the PCB sits comfortably in the 3 holes screw the nut back onto the socket finger
tight. Unscrew a little the retaining screws in the knobs and push the two knobs on to the
tone and volume barrels and tighten the retaining screws in the knobs.
Insert the on/off switch into the remaining hole on the same side as the tone and volume.
You will find it is best if it switches on-off in the horizontal rather than the vertical. Place
the washer over the barrel of the switch (it will only fit on one way - the barrel and washer
are notched) and screw the nut on until it is tight.
Step 5 - attach the speaker and final assemblyВ Solder the two speaker wires to the terminals on the speaker.
Attach the battery to the battery clip - it can only fit one way. Lay the battery in the bottom short of the tin - you may like to
secure it with tape.
Place the speaker baffle on the top of the tin. Can you see - the speaker is slightly off centre? There is a long side of the baffle
and a short side. The long side goes over the volume, tone and on/off switch. The short side goes over the battery.
Using your thumbs carefully press the edge of the baffle under the lip of the tin. It is easier to start with the edge at the battery
end of the tin. Do not force it - but you may need to ease it with your thumbs until all four edges sit neatly under the lip of the
Done. Now you can plug your guitar in - it will work with both six string and bass guitars - and, of course, start with the volume
turned down until you find the right levels for your guitar. Welcome to the Fuzz Club. Share your good work on or on Instagram #tinamps. В В Hint: always switch your Tinamp off when not in use otherwise the battery will discharge even when you are not playing.В В Replacing the batteryВ В When you need to replace the battery you will need to remove the speaker baffle carefully to access the battery, remove it
from the clip and replace it. Use a flat blade like a penknife and slip it between the edge of the tin and the baffle. Carefully prise
one edge up holding the edge of the baffle firmly between thumb and blade.В В В В Tinamps Ltd, Unit 21 Creative Arts Development Space, 20-22 Burton Road, Kelham Island, Sheffield S3 8BX В 
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