Introduction: ICStation Amplified Dual Speaker Kit

By ICStation.com
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The ICStation Amplified Dual Speaker DIY Kit is Perfect for those Who want to Practice Building Electronics, and then have an Awesome Device when Complete. 

Features about this Kit:

  • Easy to Assemble.
  • Inexpensive.
  • Quality Components. 
  • Easy to Modify.
  • Audio Level LED Display.
  • Adjustable LED Sensitivity. Adjustable Amp Level.
  • USB Powered. Perfect for Power Banks when going Portable.
  • Stereo Audio is Pleasing.
  • Perfect for Radios/Phones/Tablets/MP3 Players with Tiny Speakers, or No Speakers at All.
  • Clean PCB Design, Nice Clear Enclosures, You are going to have one awesome Stereo Speaker System when complete. 

Supplies

Step 1: Install 1pcs SMD Components SOP-8 SC8002B Amplifier at U1

  • There is a white gap and indicating arrow on PCB silk screen at U1 and there is a mark(dot) on IC.
  • These two marks are corresponding to each other and are used to specify the installation direction.

Step 2: Melt the Solder on Pad Pin1

Choose Pin1 pad which has been indicated by arrow on the PCB, and then melt the solder on this pad

Step 3: Fix SC8002B

  • Use a soldering iron to melt tin on the pad just now and hold IC with tweezers in the other hand to place/press on U1 to prevent movement.
  • Take care to match and align each pins to pads. 
  • Then remove soldering iron after align pins.
  • Remove tweezers after solder tin cooling and solidification.

Step 4: Connect Others Pads on SC8002B to Pads on PCB by Tin and Soldering Iron.

Tips for one method(Users can also ignore and use other methods):

  1. Use a large amount of solder tin to cover all pads.
  2. Make sure all pins and pads are covered with tin.
  3. Use a soldering iron to keep the tin in the melting state. At the same time, use a solder sucker or desoldering braid to remove the excess solder.

Step 5: Install 1pcs 330ohm Metal Film Resistor at R3

Install 1pcs 330ohm Metal Film Resistor at R3

Step 6: Install 2pcs 10Kohm Metal Film Resistor at R2,R4.

Install 2pcs 10Kohm Metal Film Resistor at R2,R4.

Step 7: Install 1pcs 24Kohm Metal Film Resistor at R1.

Install 1pcs 24Kohm Metal Film Resistor at R1.

Step 8: Install 1pcs SIP9 KA2284 LED Driver at U2.

There is a corner on the components and screen prints, which are corresponding relations, which are used to lock the installation direction.

Step 9: Install 1pcs 470uF Electrolytic Capacitor at C1

There is a white mark on PCB silk screen printing where the negative(cathode) can insert into.The shorter lead is negative(cathode) pole.

Step 10: Install 2pcs 10uF Electrolytic Capacitor at C2,C6.

There is a white mark on PCB silk screen printing where the negative(cathode) can insert into.The shorter lead is negative(cathode) pole.

Step 11: Install 3pcs 1uF Electrolytic Capacitor at C3,C4,C5.

Step 12: Install 1pcs 50Kohm 503 Potentiometer at RP1 and 10Kohm 103 at RP2.

Install 1pcs 50Kohm 503 Potentiometer at RP1 and 10Kohm 103 at RP2.

Step 13: Identify the Positive and Negative Lead of LED.

  1. The leads of the LED must be installed correctly, otherwise the LED cannot be turned on.

Step 14: Install 3pcs 5mm Green LED at D1-D3, Yellow LED at D4 and Red LED at D5.

Pay attention to distinguish between positive and negative.

Use the same method to install another PCB.

Step 15: Description and Wiring Diagram.

Note: The wire color is random, but the wiring mode remains the same.

Step 16: Connect 1pcs 110cm AUX 3Pin Audio Wire to P2.

Note: Black or white wire connect to IN- pad at right, Red wire to middle pad and Black wire to left pad.

Step 17: Install 1pcs 10cm Red/Black Speaker Wire to 4ohm 3W Speaker.

Note: Red wire connect to ‘ + ’ terminal.

Step 18: Connect Speaker to PCB at P3.

Note: Red wire connect to ‘VO+ ’ pad.

Step 19: Connect 1pcs 70cm USB Power Wire to PCB at P1

Note: Red wire connect to ‘+5V’ pad.

Step 20: Connect Two PCB by 1pcs 70cm 4Pin Audio Wire on P1,P2 at 4pad

Connect two PCB by 1pcs 70cm 4Pin Audio Wire on P1,P2 at 4pad : ‘+5V’ ‘GND’ ‘IN+’ and ‘IN-’.

Note:The wire color must match the silk screen mark to avoid misplaced connection. Such as: Yellow or Black wire to ‘+5V’ pad; Green wire to ‘GND’ pad; Red wire to ‘IN+’; Blue wire to ‘IN-’.

Step 21: Test and Adjust Volume and Adjust Sensitivity.

Test And Adjust Volume And Adjust Sensitivity.

  1. USB wire connect to work voltage and AUX plug connect to sound source equipment such as PC/Phone and then play music. It is OK if the music plays normally and the LED flashes.
  2. RP1 50Kohm 503 Potentiometer is used to adjust volume.Turn clockwise to increase the volume.
  3. RP2 10Kohm 103 Potentiometer is used to adjust LED spectrum flicker sensitivity.Turn clockwise to increase the sensitivity. The higher the sensitivity, the more LED are turn ON at the same sound decibel.
  4. Note:The volume and sensitivity must be adjusted first, otherwise they cannot be adjusted again after installing the acrylic board.

Step 22: Fix 4pcs M3*5+6mm Nylon Column Screw on PCB by 4pcs M3 Nut.

Fix 4pcs M3*5+6mm Nylon Column Screw on PCB by 4pcs M3 Nut.

Step 23: Tear Off the Protective Film on the Surface of Acrylic Board.

Tear off the protective film on the surface of acrylic board.

Step 24: Fix PCB on One Acrylic Board

Fix PCB on one acrylic board by 4pcs M3*5mm Screw.

Step 25: Fix 4ohm 3W Speaker on Other Acrylic Board

Fix 4ohm 3W Speaker on other acrylic board by 4pcs M3*6mm Screw and 4pcs M3 Nut.

Step 26: Fix Anther Acrylic Board by 8pcs M2*10mm Screw 8pcs M2 Nut.

Note:Please be patient in splicing and fixing the acrylic board. Wire are reserved at the acrylic notch.

Step 27: Video Demo