Basic MOSFET amplifier 100W with 2SK1530,2SJ201

I propose you here a basic MOSFET amplifier. Output power is +/- 100 Wrms under 8 ohms or +/- 160 Wrms under 4 ohms.
Due to the circuit simplicity, distortion is +/- 0.1 %. Bandwidth at -3 db is from 4 Hz to 96 Khz, it is limited by C1, R1, C2 and R2.
Transistors T1 and T2 makes a first differential stage, current source of +/- 1 mA is set by R3. In the upgraded version, current source is more efficient in stability. P1 allows a fine tuning of DC voltage at amplifier’s output. Place P1 at it’s half value for first power up, then turn it slowly for a lowest DC output voltage. Use a first quality compoment.

Part
C1 = 2,2 µF MKP, MKT 100 V
C2 = 330 pF ceramique 50 V
C3 = 100 nF MKP, MKT 100 V
C4 = 100 µF 40 V electro-chimique
C5, C6 = 18pF ceramique 50 V
C7 = 100 nF MKP, MKT 250 V (C8 = 47µF 100 V)
R1, R3 = 47 K (R3 = 330 – 470 Ohms)
R2 = 2K2
R4, R5 = 3K9
R6 = 1 K
R7 = 27 K
R8, R9, R11 = 100 ohms
R10 = 10 K
R12, R13 = 470 ohms
R14, R15 = 0.33 ohms 5 watts
R16 = 10 ohms 3 watts (R17 = 1 K R18, R19 = 10K)
T1, T2, T9,T10 = 2N5401, ZTX558, BC556B (attention au brochage different – take care for pin layout)
T3, T4 = BF470, MJE350, 2SB649
T5, T6 = BF469, MJE340, 2SD669
T7 = IRFP240, 2SK1530, 2SJ162, BUZ900DP, BUZ901DP (attention au brochage different – take care for pin layout : GDS GSD)
T8 = IRFP9240, 2SJ201, 2SK1058, BUZ905DP, BUZ906DP (attention au brochage different – take care for pin layout : GDS GSD)
P1 = 100 ohms (25 tours – 25 turns)
P2 = 2K5 (25 tours – 25 turns)
F1, F2 = 3 A T

Power Amplifier OCL 100W Mosfet J162 + K1058
This is circuit MOSFET power amplifier OCL, Output 100w , use mosfet k134+j49 or Mosfet J162 + K1058 Output 112W at Speaker 8 OHM. Power Supply +56V/-56V 4A /Ch. Circuit power amplifi ...
Mosfet Power Amplifier 120W by K1058,J162
This amplifier evolved from the previous 6 transistor mosfet amplifier. That design was already so good there seemed no reason to look for improvements, but the high open-loop distortion at 20kHz ...
power amp mosfet ocl 60W by K134 and J49 with PCB
This is circuit power amp mosfet ocl 60W, it use mosfet K134 and J49. Out put power 60W at speaker 8 ohm or 120W at 4 ohm. It easy circuit. Supply volt +49V gnd +49V ,Curent 3-5A. circuit pow ...
Mosfet Amplifier OTL 100W by K1058,J162
This includes a 220uF capacitor and two diodes to slow down the switch-on to reduce the output thump as the output capacitor charges through the speaker. This is not essential, depending on sp ...
Power Amplifier 45W with HEXFET IRF9540,IRF540
A ideal solution for the make a good, low cost power amplifier. It's a ideal solution for the creation a system of home cinema. The preamplifier and the driver support in a operational amplifi ...