Genelec 8240 diodes red/green while playing - Forum
Thank you for all the years of Community discussions and activity!
The time has come for us to retire the community forums, but we will keep everything available for reading. There is a lot of valuable content written over the years, and you'll be able to access all of that. However, no new posts can be written, or old posts modified.
If you have questions, we recommend you use the Support function on the bottom right corner to contact our Customer Support directly.
Alternatively, if you wish to engage in a community discussion with other people, there are many active forums available. There is also an active, fan managed GENELEC COMMUNITY in Facebook, and many Genelec employees are active in the discussions there.
We are sorry for any possible inconvenience this may cause you, but we hope to hear from you through the other channels mentioned above.
Genelec Support
fuzzyboy, muokattu 11 Vuodet sitten.
Genelec 8240 diodes red/green while playing
Youngling Viestejä: 19 Liittymispäivä: 3.10.2011 Viimeisimmät viestit
However, when I got home today I noticed that while playing the diodes would occasionally start becoming red for a really short time (like a 5th of a second) and then go back to green. Sometimes they'll do this on and off things in irregular intervals for 3-4 minutes, then go back to constant green for a few minutes, then back to switching between red and green.
I'm using them at -60dB, so rather low. I can't hear any distinguishable sound degradation. Should I return them or could it be some irregular wiring or such?
viltsu, muokattu 11 Vuodet sitten.
Re: Genelec 8240 diodes red/green while playing
Youngling Viestejä: 4 Liittymispäivä: 19.5.2010 Viimeisimmät viestit
Well, the source isn't a CD, it's a computer (via USB). However the flashing has stopped since yesterday. I suspect the problem may be the electrical system / wiring in our house, which is fairly old.
He meant:
-audio file's waveform reaches -0,1 dBFS if inputted digitally
or
-AD-converter is overdriven by feeding it more than +7 dBu RMS voltage if inputted to analog connection. +7 dBu is common man terms about 1,6 volts. Many soundcards/DACs/optical disk players can output more than this i.e clip the 8240's input if levels are not adjusted.
So, yesterday you adjusted analog source levels/stopped listening maximally hot recorded hit-music-only -stuff?
fuzzyboy, muokattu 11 Vuodet sitten.
Re: Genelec 8240 diodes red/green while playing
Youngling Viestejä: 19 Liittymispäivä: 3.10.2011 Viimeisimmät viestit
Input is digital, so I guess that's the case, but what is the cause? It also flashes when not playing anything.
Red led lights also when there is errors in digital audio data. What device exactly is feeding 8240's?
Some troubleshooting points to be shooted:
-Is it S/PDIF or AES/EBU -source?
-How long cable? Is it DIY?
-If long cable + S/PDIF source, are impedance levels 75/110 ohms matched?
-What sample frequency source uses? Try plain 44,1 or 48 kHz.
-Has that source ever before worked OK as AES/EBU or S/PDIF use?
-Try different digi-source or switch to analog connection.
Source is my PC (USB) -> Trends UD-10 (from USB to AES/EBU) -> Genelec 8240. Cable from PC to UD-10 is short (USB cable), around 50cm. Cable from UD-10 ("110 Ohm pro AES/EBU digital XLR/XLR") to 8240 is 2m. It's not DIY. Impendence is matched (UD-10).
Default format is set to 16 bit, 44100 Hz.
I have no other digital source, so switching is not really an option I'm afraid