http://www.futurekit.com FUTURE KIT FUTURE KIT HIGH QUALITY ELECTRONIC KITS HIGH QUALITY ELECTRONIC KIT SET FOR HOBBY & EDUCATION R NO.1 Figure 2. Circuit Assembling ǧ¨Ãâ·¹¤Í¹â·ÃÅ MONO TONE CONTROL (MONO) CODE 625 LEVEL 3 + + + + + VOLUME BASS TREBLE 1 12V + G OUT + - IN + - SPEAKER POWER POWER AMPLIFIER 00:10 VCD VCD PLAYER POWER VIDEO CD, VIDEO TAPE, TUNER OR CASSETTE TAPE 12V + SHIELDED CABLE SHIELDED CABLE Figure 1. The Tone Control (mono) Circuit C + + C .....µF Watch the polarity! R .....Ω R R Figure 3. Installing the components RESISTOR ELECTROLYTIC CAPACITOR TRANSISTOR TR TR NPN B E C C + C C .....µF CERAMIC CAPACITOR C IC 1 IC 1 POTENTIOMETER VR VR