The SOCL 504 Power Amplifier circuit is now possible again as the trend amplifier, is simple and the quality is good for indoor and outdoor sound and cheap power amplifier circuit. Well, turn your trying to listen to how the 500-Watt SOCL that in fact, the result of the development of 150 Watt OCL modified for high voltage above 40VDC.
Power Amplifier SOCL 504 500 Watt has tested with 45V DC and 80V DC voltage is still good and flat sound almost all the frequency obtained and still possible in the modification to tef to get bass thicker and an addition of the number of final transistors to increase the power of 18-inch speakers.
Three transistors are VAS deliberately bolted on the PCB board though not hot, just the model let it be different from the original version. To get the maximum output power the power amplifier circuit requires a DC voltage source with a large current so that the power supply for this power amplifier circuit should use minimal transformer 20 A can be given at least 45V DC to 80V DC.
Below the circuit diagram of power amplifier SOCL 504:
Parts Power Amplifier:
R1= 100K, R2=33K, R3=560R, R4=27K, R5=56R, R6=1K, R7=27K, R8=27K, R9=56R, R10=560R, R11=4K7, R12=10K, R13=330R/2W, R14=330R/2W, R15=0.22-0.5R/5W, R16=0.22R-0.5R/5W, VR1=100R-1K
C1=22N, C2=1N, C3=22uF/50V, C4=22uF/100V, C5=22uF/100V, C6=100pF, C7=100pF, C8=100pF, C9=100N, C10=100N C11=22uF/100V
Q1-Q3=2N5401, Q4=MJE340, Q5=A1837, Q6=C4793, Q7=2SA1494/ 2SA1216/2SA1943, Q8=2SC3858/2SC2922/2SC5200
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PCB Layout Design
Assemble Power Amplifier SOCL504 Video
This SOCL power amplifier can be modified using a power output of 10 pairs of MJ21194 and MJ21193 power transistors with a maximum power of 2000 watts or if using Toshiba 2SA1943 and 2SC5200 with the maximum power of 1500 watts of course with adequate transformer capacity.