Ravindra Desai
Well-Known Member
Hello All,
I have showcased My Digital Audio Processor here: https://www.hifivision.com/threads/my-digital-audio-processor.69340/
In this thread I will showcase My Audio Amplifier which together with the processor can be used effectively for any application that uses 1 to 6 channels. Of course, for more than 3 channels, you will need a second amplifier board.
In my opinion, this amplifier and processor combo produces top quality sound that easily rivals systems x10 its cost.
The amplifier is based on tried and trusted LM1875 IC and as you can see in the pictures it accommodates a linear power supply. To the best of my knowledge, this board should leave nothing to desire.
The amplifier can withstand AC variations from 190V to 270V and is un-conditionally stable from 0E to 8E
It is 4 layer FR4 board with 70uM copper thickness, uses star grounding for no audible noise.
I have made careful choices of the components, especially the capacitors, as is the need in audio applications. The heat-sink size is chosen based on worst case power dissipation and therefore allows prolonged listening times without any issues.
In a 2.1CH configuration, the on-board relay allows you to switch between stereo (L,R,SW) and surround (C,S,SW). 2.1CH surround is a novelty that I had introduced in 1994 in Padma theater in Kolhapur and subsiquently 4 more theaters in Maharashtra. But more about that later, elsewhere.
Though LM1875 is only 20Wrms chip-amp, with my processor, it is more that sufficient for a room size of 20ft x 20ft.
I will detail out other specialties my processor + amp combo offers elsewhere soon.
I hope that you like it.
Enjoy!
Regards,
Ravindra.
I have showcased My Digital Audio Processor here: https://www.hifivision.com/threads/my-digital-audio-processor.69340/
In this thread I will showcase My Audio Amplifier which together with the processor can be used effectively for any application that uses 1 to 6 channels. Of course, for more than 3 channels, you will need a second amplifier board.
In my opinion, this amplifier and processor combo produces top quality sound that easily rivals systems x10 its cost.
The amplifier is based on tried and trusted LM1875 IC and as you can see in the pictures it accommodates a linear power supply. To the best of my knowledge, this board should leave nothing to desire.
The amplifier can withstand AC variations from 190V to 270V and is un-conditionally stable from 0E to 8E
It is 4 layer FR4 board with 70uM copper thickness, uses star grounding for no audible noise.
I have made careful choices of the components, especially the capacitors, as is the need in audio applications. The heat-sink size is chosen based on worst case power dissipation and therefore allows prolonged listening times without any issues.
In a 2.1CH configuration, the on-board relay allows you to switch between stereo (L,R,SW) and surround (C,S,SW). 2.1CH surround is a novelty that I had introduced in 1994 in Padma theater in Kolhapur and subsiquently 4 more theaters in Maharashtra. But more about that later, elsewhere.
Though LM1875 is only 20Wrms chip-amp, with my processor, it is more that sufficient for a room size of 20ft x 20ft.
I will detail out other specialties my processor + amp combo offers elsewhere soon.
I hope that you like it.
Enjoy!
Regards,
Ravindra.
