1. Speaker Protection C1237 User Manual Analog Metric www analogmetric com sales amp analogmetric com Copyright Q2009 All Rights Reserved SPEAKER PROTECTION C1237 USER MANUAL FVEGAVS Features 1 Use speaker protection IC upC1237 2 Power on delay protection 2 3 seconds 3 Disconnection when power off to prevent pop noise 4 Open protection for both positive 0 6V DC and negative 0 2V DC offset voltage at output to speaker 5 Supply voltage 35 48V AC or 15 24V DC 6 PCB Dimension 67mm L x 50mm W ASSEMBLY PROCEDURES 1 Solder the components according to the schematic and BOM Notice to the direction of the electrolytic capacitors C1 C2 C3 C5 and the diodes D1 and D2 2 Apply either 35 48V AC or 15 24V DC voltages to PI Also this voltage is usually come from the main power supply 3 A click sound will be heard after few seconds 2 3s when the power supply turn on 4 Jl is connected to J2 www analogmetric com Page 2 SPEAKER PROTECTION C1237 USER MANUAL Analog Metric Metric SPEAKER PROTECTION C1237 L ANA OG ME TAM If you have any problem in assembly please contact us by email to tech analogmetric com www analogmetric com Page 3