Audio Amplifier Module 30w Mono TDA8932 24V DC
The TDA8932-based Audio Amplifier Board is a compact, digital mono amplifier module capable of delivering 35W output power with high efficiency and sound quality. Designed around the TDA8932 digital amplifier chip, this board is ideal for space-constrained audio projects. It supports a DC input range of 10V to 30V (recommended 24V) and works best with 8-ohm speakers. No heatsink is required due to its efficient PWM-based amplification.
Package Includes:
- 1 x TDA8932 Audio Amplifier Board
Features:
- Digital amplifier: Uses high-performance TDA8932 chip for excellent sound quality and low distortion.
- Mono configuration: Delivers up to 35W in a Bridge Tied Load (BTL) setup.
- Compact size: Small PCB (45 × 31 mm) fits easily into DIY projects.
- High efficiency: Operates up to 90% efficiency with minimal power loss.
- No heatsink required: Runs cool enough for most applications without extra cooling.
- Easy interfacing: Simple connection to 35W speaker and power source.
- Wide application range: Ideal for public address, home theatre, sound reinforcement, and instrument amplification.
- Cost-effective: Affordable yet powerful and high-quality option for DIY audio.
Principle of Work:
The module works using Pulse Width Modulation (PWM) amplification. The TDA8932 receives an audio signal at its input, processes it with high-frequency switching (~300kHz), and outputs the amplified signal in a BTL format. The output passes through a low-pass filter to remove switching noise, recovering the clean amplified audio. The high efficiency (up to 90%) ensures minimal heat generation.
Pinout of the Board:
- INPUT+: Positive audio input.
- INPUT-: Negative audio input (GND level).
- BTL OUT+: Positive speaker output.
- BTL OUT-: Negative speaker output.
- POWER+: Positive DC input (10V–30V).
- POWER-: Ground connection.
Applications:
- Public address systems (halls, auditoriums).
- Sound reinforcement for concerts and DJ events.
- Home theatre systems.
- Instrument amplifiers (guitars, keyboards, etc.).
- DIY portable or compact audio projects.
Circuit:
- Connect audio source + to INPUT+, and - to INPUT-.
- Connect speaker + to BTL OUT+, and - to BTL OUT-.
- Connect power supply + to POWER+, and - to POWER-.
- Use a power supply rated 10–30V DC with at least 2A current.
Library:
No library required.
Code:
No code required.
Technical Details:
- Amplifier chip: TDA8932
- Output power: 35W
- Output configuration: Mono BTL
- Input voltage: 10V–30V DC (24V recommended)
- Current requirement: >2A
- Speaker impedance: 4–8 ohms (8 ohm optimal)
- Board size: 45 × 31 mm
- Cooling: No heatsink required
- Alternatives: TDA7279 (15W + 15W), TPA3118 (60W)
Resources:
- Datasheet
- Instructional Videos
Comparisons:
| Feature | TDA8932 Board | TDA7293 Board |
|---|---|---|
| Power Output | 35W | 100W |
| Amplifier Class | Class D (PWM Digital) | Class AB |
| Voltage Requirement | 10V–30V DC | 32V DC |
| Speaker Impedance | 4–8Ω | 4–8Ω |
| PCB Size | 45 × 31 mm | 65 × 45 mm |
Features:
- Digital amplifier: Uses high-performance TDA8932 chip for excellent sound quality and low distortion.
- Mono configuration: Delivers up to 35W in a Bridge Tied Load (BTL) setup.
- Compact size: Small PCB (45 × 31 mm) fits easily into DIY projects.
- High efficiency: Operates up to 90% efficiency with minimal power loss.
- No heatsink required: Runs cool enough for most applications without extra cooling.
- Easy interfacing: Simple connection to 35W speaker and power source.
- Wide application range: Ideal for public address, home theatre, sound reinforcement, and instrument amplification.
- Cost-effective: Affordable yet powerful and high-quality option for DIY audio.
Principle of Work:
The module works using Pulse Width Modulation (PWM) amplification. The TDA8932 receives an audio signal at its input, processes it with high-frequency switching (~300kHz), and outputs the amplified signal in a BTL format. The output passes through a low-pass filter to remove switching noise, recovering the clean amplified audio. The high efficiency (up to 90%) ensures minimal heat generation.
Pinout of the Board:
- INPUT+: Positive audio input.
- INPUT-: Negative audio input (GND level).
- BTL OUT+: Positive speaker output.
- BTL OUT-: Negative speaker output.
- POWER+: Positive DC input (10V–30V).
- POWER-: Ground connection.
Applications:
- Public address systems (halls, auditoriums).
- Sound reinforcement for concerts and DJ events.
- Home theatre systems.
- Instrument amplifiers (guitars, keyboards, etc.).
- DIY portable or compact audio projects.
Circuit:
- Connect audio source + to INPUT+, and - to INPUT-.
- Connect speaker + to BTL OUT+, and - to BTL OUT-.
- Connect power supply + to POWER+, and - to POWER-.
- Use a power supply rated 10–30V DC with at least 2A current.
Library:
No library required.
Code:
No code required.
Technical Details:
- Amplifier chip: TDA8932
- Output power: 35W
- Output configuration: Mono BTL
- Input voltage: 10V–30V DC (24V recommended)
- Current requirement: >2A
- Speaker impedance: 4–8 ohms (8 ohm optimal)
- Board size: 45 × 31 mm
- Cooling: No heatsink required
- Alternatives: TDA7279 (15W + 15W), TPA3118 (60W)
Resources:
- Datasheet
- Instructional Videos
Comparisons:
| Feature | TDA8932 Board | TDA7293 Board |
|---|---|---|
| Power Output | 35W | 100W |
| Amplifier Class | Class D (PWM Digital) | Class AB |
| Voltage Requirement | 10V–30V DC | 32V DC |
| Speaker Impedance | 4–8Ω | 4–8Ω |
| PCB Size | 45 × 31 mm | 65 × 45 mm |