Weeb Labs
Addicted to Fun and Learning
Greetings!
I thought it might be fun to share details of a current project, which involves modifying AVRs with post-DSP SPDIF outputs. This effectively turns any AVR into a fully digital audio processor with room correction, subwoofer crossover/time alignment and EQ functionality.
The potential applications are numerous and I am in the process of producing a rather elaborate video that should enable anybody with moderate DIY electronics experience to perform this modification.
The modification itself is fairly straightforward and entails hijacking the front channel I2S output which runs between the unit's DSP and DAC. A readily available WM8804 board can then be used to obtain a stereo coaxial SPDIF output for those channels.
I expect to complete production of the video guide within a few weeks. These photos were taken during a quick test, to ensure that my script did not omit any relevant detail. The procedure is applicable to almost any AVR, with pin locations and channel pairings being the only significant variables.
This is a cheap, used Denon AVR-2807. It was manufactured in 2006 and was one of the first Denon units to include Audyssey MultiEQ.
The thought had also occurred to me that the AD IC would be fairly easy to control via I2C for arbitrary DSP. Perhaps I'll look into that soon!
I thought it might be fun to share details of a current project, which involves modifying AVRs with post-DSP SPDIF outputs. This effectively turns any AVR into a fully digital audio processor with room correction, subwoofer crossover/time alignment and EQ functionality.
The potential applications are numerous and I am in the process of producing a rather elaborate video that should enable anybody with moderate DIY electronics experience to perform this modification.
The modification itself is fairly straightforward and entails hijacking the front channel I2S output which runs between the unit's DSP and DAC. A readily available WM8804 board can then be used to obtain a stereo coaxial SPDIF output for those channels.
I expect to complete production of the video guide within a few weeks. These photos were taken during a quick test, to ensure that my script did not omit any relevant detail. The procedure is applicable to almost any AVR, with pin locations and channel pairings being the only significant variables.
This is a cheap, used Denon AVR-2807. It was manufactured in 2006 and was one of the first Denon units to include Audyssey MultiEQ.
The thought had also occurred to me that the AD IC would be fairly easy to control via I2C for arbitrary DSP. Perhaps I'll look into that soon!