List of components for assembly circuit TDA1524A tone control with Bass and Treble
Parts	Value
Resistor’s 1/4 Watt 5%
R1	1.2K – Brown, Red, Red, Gold
R2	2.2K – Red, Red, Red, Gold
R3, R4	4.7K – Yellow, Violet, Red, Gold
R5, R6	220 – Red, Red, brown, gold
Capacitors
C1	4700΅F/35V – Electrolytic Capacitor
C2, C4, C5, C6, C7, C8, C20	100nF – Polyester Capacitor
C3, C13, C14, C15, C16	10΅F/25V – Electrolytic Capacitor
C9, C17	47nF – Polyester Capacitor
C10,C18	15nF – Polyester Capacitor
C11, C12	10nF – Polyester Capacitor
C19	100΅F/25V – Electrolytic Capacitor
Semiconductors
D1, D2, D3, D4	1N4004 or equivalent – rectifier diode
IC1	7812T – Positive voltage regulator 15 Volts
IC2	TDA1524A – Integrated circuit with volume and tone control Philips (NXP) Semiconductors
LED	Red LED
Miscellaneous
IN	Input Connector Stereo Audio
AC	Connector to the transformer
OUT	Connector for Stereo Audio Output
J1	J12MM – Jumper 12 mm piece of wire.
Trafo	Transformer 12 Volt
P1, P2, P3, P4	50K or 47K Linear Pot-
S1	Switch for Loudness
Welding, Wire, Cash for housing circuit, printed circuit board, the IC socket, fuse, etc..


Read more: Circuit Stereo Preamplifier With IC TDA1524A – Tone Control Unit – Bass Treble volume control, channel balance and loudness contour | Xtronic Free Electronic Circuits and Informations http://xtronic.org/circuit/amplifier/stereo-preamplifier-tone-control-bass-treble-balance-loudness-volume/#ixzz2tl2swOIV