DIY Dual Channel Speaker Protection Board – Boot Delay DC Kit
DIY Dual Channel Speaker Protection Board – Boot Delay DC Kit
DIY Dual Channel Speaker Protection Board with Boot Delay & DC Protection
Protect your stereo speakers and audio amplifier setup with this reliable Double Channel Speaker Protection Board DIY Kit. Featuring a built-in boot delay and DC offset detection circuit, this kit safeguards your speakers from startup transients and dangerous DC voltage, keeping your audio system performing at its best.
This kit comes with all components and the PCB included — everything shown in the product images — but is supplied unassembled, making it a great hands-on project for electronics enthusiasts and DIY audio builders.
Key Features
- Dual / Double Channel Design — protects both left and right stereo channels simultaneously
- Boot Delay: 3–5 second startup delay eliminates power-on transients that can damage speaker cones
- DC Offset Protection: 1.2V DC sampling triggers automatic speaker disconnect to prevent driver damage
- Simple, Safe & Reliable Circuit — straightforward PCB layout ideal for DIY builders
- CE Certified for added confidence in component safety
- Operating Voltage: AC 12–16V (independent power supply recommended — do NOT share power supply with the amplifier)
- Compact Dimensions: 65mm (L) × 40mm (W) × 25mm (H)
Package Contents
- 1 × Speaker Protection Board DIY Component Kit for Stereo (all components + PCB, unassembled)
Specifications
| Type | Dual Channel Speaker Protection Board |
| Operating Voltage | AC 12–16V |
| DC Sampling Threshold | 1.2V |
| Boot Delay | 3–5 Seconds |
| Dimensions | 65 × 40 × 25 mm |
| Certification | CE |
| Assembly | DIY Kit (Unassembled) |
| Country of Origin | Made in Mainland China |
Great Pairing for Your DIY Projects
Building a complete audio setup? Check out these other DIY-friendly products from our store:
- 10pcs Multicolor Pompom Plush Fur Ball Beads DIY Jewelry Charms
- Stainless Steel Cord End Caps with Loop – 6pcs Jewelry Findings
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: Does this speaker protection board kit come pre-assembled?
A: No, this is a DIY kit. It includes all electronic components and the PCB as pictured, but it is supplied unassembled. You will need to solder the components onto the board yourself. It is best suited for hobbyists and electronics enthusiasts comfortable with soldering.
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 a dedicated, independent power supply for this protection board and NOT to share the power supply with your power amplifier, as this can affect circuit performance.
Q: How does the boot delay function protect my speakers?
A: When your amplifier powers on, it can produce a brief transient surge that may damage speaker drivers. This board introduces a 3–5 second delay before connecting your speakers to the amplifier output, allowing the amp to stabilize first. Additionally, the DC offset sampling circuit (triggered at 1.2V) will automatically disconnect speakers if dangerous DC voltage is detected.
Q: Is this board compatible with both stereo channels?
A: Yes. This is a dual (double) channel design, meaning it protects both the left and right stereo output channels of your amplifier simultaneously.
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.