Circuit Diagram — Stk413-430

Let me know, and I’ll go in that direction.

Are you planning to from scratch, or are you troubleshooting an existing unit?

Refer to the exact STK413–430 model datasheet for:

and Pin 4 control the amplifier's gain and linearity.

| Pin | Function | Pin | Function | | :--- | :--- | :--- | :--- | | 1 | NF Left (-In) | 18 | NF Right (-In) | | 2 | Left Signal In | 17 | Right Signal In | | 3 | Bias / Bootstrap L | 16 | Bias / Bootstrap R | | 4 | Left Output | 15 | Right Output | | 5 | +Vcc (Left stage) | 14 | +Vcc (Right stage) | | 6 | +Vcc (Power) | 13 | +Vcc (Power) | | 7 | -Vee (Power) | 12 | -Vee (Power) | | 8 | -Vee (Left stage) | 11 | -Vee (Right stage) | | 9 | Signal Ground | 10 | Heatsink / Substrate Ground |

| Pin | Name | Description | |-----|-------------|---------------------------------| | 1 | +Vcc (R) | Right channel positive supply | | 2 | Out (R) | Right channel output | | 3 | GND (R) | Right ground | | 4 | -Vcc (R) | Right negative supply | | 5 | Bootstrap R | Bootstrap capacitor for right | | 6 | NF (R) | Negative feedback right | | 7 | Input R | Right channel signal input | | 8 | GND (signal)| Signal ground | | 9 | Input L | Left channel signal input | | 10 | NF (L) | Negative feedback left | | 11 | Bootstrap L | Bootstrap capacitor left | | 12 | -Vcc (L) | Left negative supply | | 13 | GND (L) | Left power ground | | 14 | Out (L) | Left channel output | | 15 | +Vcc (L) | Left positive supply |