DIY Dual Channel Speaker Protection Board Boot Delay Kit

$15.94 $18.86

DIY Dual Channel Speaker Protection Board – Boot Delay Kit

Build your own reliable speaker protection circuit with this complete DIY component kit. Designed for stereo audio systems, this double-channel protection board introduces a 3–5 second boot delay so your speakers are safely connected only after your amplifier has fully powered on — eliminating unwanted startup noise and protecting your drivers.

Whether you're a hobbyist assembling a custom audio setup or an electronics enthusiast upgrading an existing amplifier, this kit gives you everything you need: all PCB components plus the board itself, ready for you to solder together.

Key Features

Dual Channel Protection: Safeguards both left and right speaker channels simultaneously.
3–5 Second Boot Delay: 1.2V DC sampling triggers a controlled delay on startup, keeping your speakers safe from power-on transients.
Simple, Safe Circuit Design: Straightforward schematic ideal for DIY builders of all skill levels.
AC 12–16V Operating Voltage: Use an independent power supply (not shared with the amplifier) for best results.
Metal Construction: Durable metal components for long-lasting performance.
Compact Size: 65mm (L) × 40mm (W) × 25mm (H) — fits neatly inside most amplifier enclosures.
Complete DIY Kit: Includes all components and PCB as pictured — not pre-assembled; soldering required.

Specifications

Type: Dual Channel Speaker Protection Board (DIY Kit)
Operating Voltage: AC 12–16V (independent power supply recommended)
Delay Time: 3–5 seconds (1.2V DC sampling)
Dimensions: 65mm × 40mm × 25mm
Material: Metal
Compatible Equipment: Stereo speakers / amplifier systems

What's in the Box

1 × Speaker Protection Board DIY Component Kit (PCB + all electronic components)

Note: This kit is supplied unassembled. Soldering skills are required for assembly. Use an independent power supply — do not share a power supply with the amplifier unit.

Made in Mainland China.

Frequently Asked Questions

Q: Does this speaker protection board kit come pre-assembled?

A: No, this is a DIY kit. It includes all the electronic components and the PCB as shown in the product images, but it is not pre-assembled. You will need basic soldering skills and equipment to build the circuit yourself.

Q: What power supply should I use with this speaker protection board?

A: The board operates on AC 12–16V. It is strongly recommended to use an independent power supply dedicated to this protection board — do not share a power supply with your power amplifier, as this can affect performance and reliability.

Q: What is the purpose of the 3–5 second boot delay on this protection board?

A: The boot delay prevents your speakers from being connected to the amplifier output immediately at power-on. This short delay allows the amplifier to stabilize before the relay engages, protecting your speakers from unwanted transient noise or voltage spikes during startup.

Q: What audio setups is this dual channel speaker protection board compatible with?

A: This board is designed for stereo speaker systems and is compatible with most dual-channel (left/right) amplifier setups that operate within the specified voltage range. It is ideal for DIY amplifier builds, hi-fi projects, and custom audio enclosures.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.