https://www.altronics.com.au/p/k5528-currawong-2x10-watt-stereo-valve-amplifier-kit/
Made me an offer I cant remember - cuppla hundred bucks due water damage on the box. ..
Silicon Chip Online Issue - November 2014
Silicon Chip Online Issue - December 2014
I buy these to build the speakers with these drivers. First made in July 22.
DAEX58FP
Idea which I considered. A Pi Audio Hat
https://core-electronics.com.au/raspberry-pi-iqaudio-dac-pro-48159.html
Raspberry Pi IQaudio DAC Pro
SKU: CE07563
https://www.max2play.com/en/2016/01/raspberry-pi-zero-with-iqaudio-dac/ https://www.sparkfun.com/products/17738
Decided not to. It is too complicated to get the audio to it. Perhaps .wav files to get proper Hi Fi Audiophile cred? Not worth it.
FAULT : Both channels intermittently becoming quite and distorted.
When i tried to power the Wi Fi source from a USB source there was a huge hum so i just temporarily powered it off a battery pack. This time i should derive the Power from the 12 Volt DC heater line and that way there are no external earths.
The audio input needs to be wired to the in/out panel.
Fixed that and biffed out that horrible bluetooth
abomination i had and relpaced it with an automotive one.. Deriving the
12 volt from the heater voltages.
Much Much nicer but these snot green planar "speakers' still sound terrible. And very quiet.
I
have some scrap speakers to test out but probably best I aim to get
some twin code old school efficient conventional speakers. They are slightly better bass but still very quiet at full volume.
FAULT : The 330 Ohm 5 watt resistors are cooked.
I left out a link .. I did put a link on LK4 / 5 which complete the feedback loop presumably can remove them for testing. The links I left out are next to them.
https://www.diyaudio.com/community/threads/silicon-chip-mag-currawong-amp.264057/page-4?utm_source=chatgpt.com