Inilah 100 W Amplifier 2Sa1943 - 2Sc5200 Dx-Amp

Based on three characteristics: good quality sound, easy to make, and not expensive circuit, this TOSHIBA DX is worth to try. Just need 36VDC voltage input as a fuel, the circuit can produce 100W output on 40 Ohm speakeror 50W on 80 Ohm, using a pair of TOSHIBA A1943 – C5200 per channel.

Here the circuit parts:
R1, R22________________________10
R2, R19________________________180
R3, R11________________________30K
R4, R8_________________________100
R5_____________________________1K
R6, R10, R12___________________2K2
R7_____________________________4K7
R9_____________________________820
R13____________________________2K7
R14____________________________2K
R15, R18_______________________82
R16, R17_______________________33
R20, R21_______________________4R7
VR1____________________________10K
VR2____________________________1K
C1_____________________________2u2
C2, C4, C7, C8, C11____________1OOn
C13, C15, C17, C18_____________1OOn
C3, C6, C12___________________47u
C5_____________________________220p
C9, C14________________________22p
C10, C18, C19__________________220u
Z1_____________________________12V
Q1, Q2_________________________2N5401
Q3, Q8_________________________BD139
Q4_____________________________TIP41
Q5_____________________________TIP42
Q6_____________________________2SC5200
Q7_____________________________2SA1943


Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/”Derating Concept and Methods”) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).