12 V 10 A Stereo Speaker Protection PCB Board (Bare PCB)
This PCB is designed for building a stereo speaker protection circuit with delay and DC fault detection. Performance depends on components used and assembly quality.
Working Voltage:
Input supply: 0 to 12 V AC
Onboard rectifier and regulator support operation with input up to 30 V AC
Current Capacity:
Relay switching current: up to 10 A (using standard “sugar cube” relay, depends on relay used)
Protection Features:
Turn-on delay: approximately 1 to 2 seconds to prevent speaker damage from power-on/off transients
DC detection: relay remains OFF if DC voltage above approximately 2 V is present at speaker output
Fault condition detection prevents relay activation to protect speakers
Channel Support:
Dual-channel protection for stereo amplifier outputs
Indicators:
LED indicators for:
Power/OK status
Fault condition
Construction:
Bare PCB (components not included)
Designed for through-hole components
Components are commonly available
Configuration:
Requires appropriate relay, components, and assembly
Designed to be connected between amplifier output and speaker load
Final performance depends on component selection and build quality
Intended Use:
Speaker protection in stereo audio amplifier systems
Prevention of speaker damage due to DC offset and switching transients
Suitable for home audio systems and DIY audio projects
