TDA7379 CD7379 Power Amplifier Board
= 38W x 2 DC Stereo Dual Channel High Power Amp =
The TDA7379 is a highpower stereo amplifier board delivering 38W per channel in a compact DCpowered format. This dual-channel amp provides clean audio amplification for speakers and sound systems.
High Output Power - 38W x 2 stereo amplification
DC Powered - Runs from 12V to 18V supply
Use adequate heatsink for extended operation
Match speaker impedance to 4Ω for max power
Do not exceed 18V power supply
= Technical Specifications =
| Parameter | Value |
|---|
| Amplifier IC | TDA7379 |
| Output Power | 38W x 2 at 4Ω |
| Supply Voltage | 12V to 18V DC |
| Speaker Impedance | 4Ω to 8Ω |
| Frequency Response | 20Hz to 20kHz |
| Channel Type | Stereo dual channel |
| Efficiency | 70% typical |
= Key Features =
Dual Channel Output - Stereo sound for two speakers
Compact Board Design - Fits small enclosures
Protection Circuitry - Short circuit and thermal
Volume Control Builtin potentiometer option
Low Noise Floor - Clean audio reproduction
== Applications ==
- DIY speaker systems
- Car audio upgrades
- Home theater setups
- Portable boomboxes
- Computer speaker builds
- PA system amplifiers
Great Sound Quality Clean, distortionfree output
Versatile Use - Works in many audio projects
√ Screw terminals for easy connections
√ Includes mounting holes
√ Ready for immediate use
= Connection Guide =
Input connections:
- L-IN: Left audio signal
- R-IN: Right audio signal
- GND: Input ground
Output connections:
- L+: Left speaker positive
- L-: Left speaker negative
- R+: Right speaker positive
- R-: Right speaker negative
Use 1A fuse on power input for protection
Add input capacitor for DC blocking
Do not short speaker outputs
Ensure proper speaker impedance matching
= Power Supply Requirements =
Recommended supply:
- 12V to 15V for safe operation
- 3A minimum current capability
- Clean DC with good filtering
- Use 4700µF capacitor for stability
Easy Powering - Works with common supplies
Efficient Design - Runs cool with heatsink
Reliable performance for long sessions
Used by audio enthusiasts worldwide
√ Pre-assembled and tested
√ Includes power and speaker terminals
√ Compact for DIY installations
= Installation Tips =
For best results:
- Mount on metal chassis for heat dissipation
- Keep input wires away from power wiring
- Use shielded cable for audio inputs
- Add 0.1µF capacitor on power input
Apply thermal paste for better heat transfer
Twist speaker wires to reduce noise
Do not operate without heatsink
Keep ventilation holes clear
= Troubleshooting =
No sound output:
- Check power supply voltage
- Verify input signal present
Avoid speaker impedance too low
Distortion:
- Reduce volume level
- Check power supply capability
Avoid clipping at high output
