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Summary of Contents for Velleman K4102
- Page 1 Total solder points: 79 Difficulty level: beginner 1 advanced GUITAR PREAMPLIFIER WITH HEADPHONE OUTPUT K4102 ILLUSTRATED ASSEMBLY MANUAL H4102IP-1...
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Page 2: Specifications
Features & Specifications Features: An electric guitar cannot be connected to just any amplifier or audio installation. This preamplifier has been designed for this purpose and provides you with a headphone output, allowing you to practice without disturbing others. Moreover, it is fitted with a special device for tone adjustment, allowing anyone to create their personal sound. - Page 3 Assembly hints 1. Assembly (Skipping this can lead to troubles ! ) Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 Make sure you have the right tools: • A good quality soldering iron (25-40W) with a small tip.
- Page 4 Assembly hints 1.3 Soldering Hints : 1- Mount the component against the PCB surface and carefully solder the leads 2- Make sure the solder joints are cone-shaped and shiny 3- Trim excess leads as close as possible to the solder joint REMOVE THEM FROM THE TAPE ONE AT A TIME ! DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE.
- Page 5 Construction 1. Zenerdiode. Watch the 3. Capacitors 5. Resistor trimmers polarity! RV1 : 100K RV2 : 1K ZD... CATHODE 6. Switch C1 : 470pF (471) ZD1 : 4V7 C2 : 10nF (103) C3 : 33nF (333) Resistors 1/4W C4 : 33nF (333) SW...
- Page 6 Construction 8. RCA connectors 10. LED 12. Battery snap E... 18mm 23mm LD... 0.9" The connection leads are first plaited through the openings to CATHODE J1 GUITAR IN reduce pulling. The red is J2 LINE OUT connected to the "+" and the LD1 : 3mm red black to the "-".
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Page 7: Lock Washer
Assembly in the housing 13. Assembly in the housing Attach the sticker showing the connections to the housing, fig 4.0. Mount three spacers to the bottom of the housing, together with a shakeproof washer and an M3 countersunk bolt, see figure 2.0 4mm M3 BOLT 8mm M3 SPACER LOCK WASHER... - Page 8 Assembly in the housing Tone control Power led Power on/off Headphones Level adjustment Output Fig 4.0 Sticker Guitar IN...
- Page 9 Test & use 14. Test & use Connect a 9V battery and switch the equipment on. The LED should normally light up. This LED is also used as a "battery low" indication. Turn potentiometer RV1 to the middle of its adjustment range and connect a pair of headphones to the unit. A slight hum should be heard in the headphones when the central terminal of the input connector is touched.
- Page 10 Schematic diagram 15. Schematic diagram. BATTERY L-HEADPHONE GUITAR.IN R-HEADPHONE LEVEL.ADJ LINE.OUT TONE CONTROL...
- Page 11 16. PCB...
- Page 12 Modifications and typographical errors reserved VELLEMAN NV © Velleman nv. Legen Heirweg 33, 9890 Gavere H4102IP - 2004 - ED1 (rev.1.0) Belgium - Europe 5 4 1 0 3 2 9 2 8 9 1 8 8...
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