# Class-D Speaker Delay & Anti-Pop Module

12/24V DC speaker delay module with delayed turn-on and instant turn-off for Class-D amplifiers.

- **Seller:** [AGElectronics](https://www.lectronz.com/stores/agelectronics), Gliwice, Śląsk, Poland
- **Price:** €10.99 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Audio
- **Product page:** https://www.lectronz.com/products/tpa3255-tpa3116-anti-thump-module-24v-dc

## Options

**Voltage supply variants**

- Speaker Delay & Anti-Pop Module 12V DC (4 left)
- Speaker Delay & Anti-Pop Module 24V DC

## Links

- [Documentation](https://drive.google.com/file/d/1DxJdoxj3blj25WZWmtsycOwpue0pEH5W/view?usp=sharing)

## Images

![Class-D Speaker Delay & Anti-Pop Module](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Njg0MDYsInB1ciI6ImJsb2JfaWQifX0=--645864000d16063f0af3b0a4c10cd734ce254c19/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJQTkciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--4157f0fb908a7cf53a9fb69e24400c01800a5257/IMG_0819%20(1).PNG)
![Class-D Speaker Delay & Anti-Pop Module](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Njg0MTAsInB1ciI6ImJsb2JfaWQifX0=--6471d33be36686a768f2f84a13cac0a5a6471090/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJQTkciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--4157f0fb908a7cf53a9fb69e24400c01800a5257/3131D47E-FE83-4916-985E-43F4A252CB17%20(1).PNG)
![Class-D Speaker Delay & Anti-Pop Module](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Njg0MDIsInB1ciI6ImJsb2JfaWQifX0=--740e5ded23b65f0fbd6d6ec94a9660a3fdf1f4f9/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJQTkciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--4157f0fb908a7cf53a9fb69e24400c01800a5257/IMG_0699.PNG)

## Description

# Class-D Amplifier Anti-Pop Speaker Delay Module 

Professional speaker delay module designed to eliminate turn-on and turn-off pops in audio amplifiers. The circuit delays speaker connection after power-up and instantly disconnects the speakers when power is removed, preventing unwanted transients from reaching your speakers.

Two power supply versions are available: **12 V DC and 24 V DC**. Please select the required voltage version when ordering.

The module is fully compatible with Class D amplifiers based on **TPA3116, TPA3255**, and similar ICs, as well as most Class AB amplifiers.

## Features

* **Supply voltage: 12 V DC or 24 V DC**
* Delayed speaker connection after power-up
* Instant speaker disconnection when power is removed
* Independent switching of all four speaker lines:

  * L+
  * L−
  * R+
  * R−
* Complete speaker isolation from the amplifier
* Compatible with **BTL (Bridge-Tied Load)** amplifiers
* Compatible with Class D amplifiers such as TPA3116, TPA3255 and similar
* Suitable for Class AB amplifiers
* High-quality **RELPOL relays**
* Continuous current: **up to 5 A**
* Peak current: **up to 7 A**

## Complete Speaker Isolation

Each speaker line is switched independently. The module disconnects both the positive and negative speaker lines (L+, L−, R+, L−), providing complete isolation between the amplifier and the speakers.

This makes the module fully compatible with **BTL amplifiers**, where neither speaker terminal may be connected directly to ground.

## Why Choose This Module?

High-quality RELPOL relays provide reliable switching and long service life.

The module switches all four speaker lines, providing complete isolation between the amplifier and speakers. With support for up to **5 A continuous current and 7 A peak current**, it is suitable for a wide range of DIY and commercial amplifier projects.

The compact PCB makes the module easy to integrate into custom amplifier builds.

## Important

The module must be powered on and off using the **same DC power switch as the amplifier**.

Both the amplifier and the speaker protection module should be switched simultaneously. This ensures that when power is removed, the module immediately disconnects the speakers, effectively preventing turn-off pops and unwanted output transients.

### Available Versions

**12 V DC version** – designed for amplifiers and systems powered from 12 V DC.

**24 V DC version** – designed for amplifiers and systems powered from 24 V DC.

Please select the correct voltage version when placing your order.