Hi! Thanks for your response. They are oriented correctly - I even switched them out to test. I even tested it with one diode out, and it sounded the same - so something isn't getting through there.
It's probably working correctly if it sounds fine. D1 and D2 may light up, D3 and D4 may not. Removing one of the leds would have little effect on the perceived sound.
It's probably working correctly if it sounds fine. D1 and D2 may light up, D3 and D4 may not. Removing one of the leds would have little effect on the perceived sound.