2.1 Class D amplifier circuit Subwoofer, TPA3116D2 with analogue input on bass floor Class D amplifier used output power 100v Supply voltage 2x30W for R and L channels TPA3118D2 class amplifier Amplifier supply voltage single source 24V DC. According to the datasheet data of TPA3118D2 and TPA3116D2, operating voltages are 4.5v … 26v DC
TL074 Tone controlled high quality preamplifier circuit with active subwoofer filter made with opamlar The supply voltage of the active preamplifier circuit is symmetrical + -12V DC ( regulated with 7812 and 7912 )
TPA3116D2 TPA3118D2 amp integrators work with 90% power efficiency, but cooling over PCB may not be enough for long-term loud use. If the IC is small, it is necessary to connect a cooler
The value of the coils used in the Class D amp circuits is 10 u smd on the large type market with over 10u or 100 writers notice that 101 writers are worth 100 u
TPA3118D2 CIRCUIT SCHEMATIC
TPA3116D2 SUBWOOFER CIRCUIT SCHEMATIC
2.1 COMPLETED STATE OF THE AMPLIFIER
