I have a JVC cross media system that I bought in the mid 80s. It's slowly less relevant, and being old-school there is no remote! I started modifying the tuner to control the rest, but most radio stations are now streamed....
Found an old satellite TV STB and gutted it. A good compact size.
Before (mains lead removed)
The finished item. A bit of filler in the holes, primer and black top coat. 2 rotary encoders for main volume and sub volume. A RGB LED is green for on and slow blue flash for 'off'
Server software is Lyrion Music Server.
2.1 amp. TAS5805. There are 2 chips stacked on the right hand side purple boards. Small board is a 3V3 psu which uses about 0.1W standby. A relay turns on the amp supply/external subwoofer.
Power supply is an old laptop 19V 3A / 60W Took the top off for cooling, plus I wanted it earth free output. It means the metal emissions cage is missing. There's a built in Y cap which the cage shorted out, so this supply would appear to be approved for use in countries with earth free outlets. It's plenty to drive both chips.
A separate mains output for a subwoofer. It's a 50W 8R amp and cone. The TAS wont drive it hard enough, but I use the TAS loudspeaker output to drive the sub pre-amp. It's a nice 150Hz LPF output from the TAS. I could have used the i2s output to drive another DAC at line level, but let's be honest. It's a bass driver and a bit of HF/PWM noise from the D class TAS ain't going to be noticeable in a domestic setting.
Separate IR receiver as this project will be in a cupboard, and the receiver can hang outside. The range is over 10m. The remote is a random Philips RC5 one I was given that does more or less what I want and is easily configured on the server.
Software is heavily modified squeezlite-esp32 to give control to both TAS. TAS control software comes from here https://github.com/sonocotta/esp32-tas5805m-dac/tree/main
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