- Oct 10, 2005
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I've got a mono amplifier from a major brand that is advertised as being a class AB amp, however it sure doesn't look like it.
I found an IRS2092S class D digital amplifier chip on the board of the amp, in addition to a suspicious lack of heatsinking (if it were truly class AB). It looks like the output stage is a pair of FQPF13N50C mosfets, a MUR1620CTR rectifier, a MUR1620CT rectifier, and a pair of IRFB38N20D mosfets.
Is the presence of the IRS2092S class D amp chip proof it's not class AB as advertised?
I don't know enough about circuits to really do much analysis beyond identifying components and maybe some extremely rudimentary analysis of the PCB.
I found an IRS2092S class D digital amplifier chip on the board of the amp, in addition to a suspicious lack of heatsinking (if it were truly class AB). It looks like the output stage is a pair of FQPF13N50C mosfets, a MUR1620CTR rectifier, a MUR1620CT rectifier, and a pair of IRFB38N20D mosfets.
Is the presence of the IRS2092S class D amp chip proof it's not class AB as advertised?
I don't know enough about circuits to really do much analysis beyond identifying components and maybe some extremely rudimentary analysis of the PCB.