Description

Speaker Protection Active, Protect, Clip, Signal

Components

1. 5×10KΩ resistor 1/4W.

2. 2×1KΩ resistor 1/4W.

3. 1×39KΩ resistor 1/4W.

4. 1×47KΩ resistor 1/4W.

5. 1×4.7KΩ-10KΩ resistor 2W.

6. 6×Diode 1N4007.

7. 1×Zener Diode 1N4148.

8. 1×Zener Diode 1N4744A (15V 1W).

9. 1×Transistor C9013.

10. 2×Transistor C945/ C1815.

11. 2×Transistor 2N5551.

12. 4×LED 3 mm.

13. 1×Preset 100K-220K.

14. 2×2 pin connector base 2.54 mm.

15. 2×220uF capacitor 25V.

16. 4×6.3 mm vertical PCB terminal.

17. 1×Relay 12V 30A.

Hello Friends, In this post, I make a speaker protector. You can use this speaker protector for up to a 2500W amplifier. This speaker protector features protection, an active clip, and a signal LED, allowing you to easily determine whether your amplifier is in a faulty or normal condition. This circuit is powered by 12 volts. If this circuit is connected to the amplifier output and the transistor burns out, the circuit will not allow current to flow through the speaker.

Schematic and Layout

All Files

https://www.technicalmriganka.com/2025/06/hello-friends-in-this-post-i-make.html

Download Gerbers Download BOM(Bill of materials)

Jun 22,2025

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Speaker Protection Active, Protect, Clip, Signal

Speaker Protection

550

Published: Jun 22,2025

Standard PCB

Download Gerber file 23

BOM(Bill of materials)

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