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8341A indicator leds blinking red for no apparent reason

kirma, muokattu 5 Vuodet sitten.

8341A indicator leds blinking red for no apparent reason

Youngling Viestejä: 20 Liittymispäivä: 5.5.2017 Viimeisimmät viestit


My television (Sony ZD9) got an upgrade yesterday, enabling Dolby Vision support, which allowed Apple TV 4K to stream DV content. My telly supplies its PCM sound to a Bluesound Node 2, which delivers it digitally to a pair of 8341As. When everything is on, everything works fine, as far as I can tell.

Curious things seem to happen when I switch off my TV. First of all, speaker indicator LEDs give one or two red blinks; I don't think they did that before. Even more curiously, while I walked past them a moment ago (middle of the night) long after switching the TV off, I found those LEDs blinking red for a while. After observing them for a while, anything from spurious single blink to over a minute of red blinking have been spotted. Speakers neither warm up nor emit any audible noise (apart from that very faint hiss if you listen them up very close).

What could be the explanation for this behaviour, and how to work around it? It doesn't seem dangerous at all, but rather curious nonetheless. Could it be something completely unrelated to the upgrade? It's definitely hard to believe this behaviour would be caused by what the manuals tell of a red blinking indicator LED.




manutal, muokattu 5 Vuodet sitten.

RE: 8341A indicator leds blinking red for no apparent reason

Jedi Knight Viestejä: 180 Liittymispäivä: 25.4.2014 Viimeisimmät viestit

When I shut down my preamp and close the glm software my digital genelecs blink red for 10 minutes before ISS shuts them down completely.

I guess you have configured ISS to shut them down after you shut everything off?  There could be some signal still going to the genelecs from your bluesound, that would explain why they dont go to sleep via ISS. Try the different ISS sensitivities that came with GLM 3. Might work.

My digital genelecs also blink red ones when I switch from bitstream to PCM or vice versa. Nothing to worry about, its only the signal thats changing.

The red blinking can also mean that the digital signal is clipping This happened to me with my old smaller subs when they were to small for my main speakers. (when playing pretty loud dbs.. :D) Nothing to worry about either, its the inbuilt circuit protection or something like that so you cant ever brake your genelecs by playing to loud, they just start blinking red for their own sake and your ears also :) Hope this helps.

kirma, muokattu 4 Vuodet sitten.

RE: 8341A indicator leds blinking red for no apparent reason

Youngling Viestejä: 20 Liittymispäivä: 5.5.2017 Viimeisimmät viestit

I had an extensive discussion on this with Genelec firmware guys and... well, they're still blinking occassionally when my telly is "off", which doesn't mean it's really off these days. I believe this is a traditional case of pointing fingers on other vendors, and not necessarily a fault of any specific vendor; there are cracks on all industry standards which may allow such things to happen.

I believe that for unknown reasons my sleeping telly does provide mute digital signal on its digital out, but drops it occassionally for a moment. This situation may be somehow aggravated, or at least not fixed by Bluesound Node 2 box between it and my speakers. This causes them to occassionally blink as a sign of lost digital signal, but recovering from it in a blink of an eye.