Elenco Snap Circuits SOUND &reg - Manual (Page 47)

Project 63 Your Music without Echo
MP3 player
Project 64
Low Power
Your Music
without
Echo
Here we are using the
amplifier inside the echo
IC (U28), without adding
any echo effects to the
music.
Project 65 Adjustable Music without Echo
MP3 player
Modify the project 63 circuit to include a
volume control, the adjustable resistor
(RV). It works the same way, but adjust the
volume using the lever on RV.
Build the circuit, and turn
on the slide switch (S1).
Connect a music device
(not included, but this set
does include a cable to
connect it) to the audio
jack (JA) as shown, and
start music on it.
Set the volume control on
your music device for a
comfortable sound level.
Use the preceding circuit, but
remove the 1
m F capacitor
(C7) from the circuit, or
replace it with the 0.1
m F
capacitor (C2). The volume is
not as loud now.
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