Dr nEon
Well-known member
Hi Guys,
I'm halfway thru mixing an album, and yesterday morning I switch on the board and see that all my VU meters are not resting at -infinity (.. they are all reading around -17dB . Sitting static at that level, with no DAW playing..
As soon as I printed my mix, I pulled everything from the patchbay...and with the board switched off, I worked all the switches on the board..just to try to rule out the obvious. . when I switched the board back on with faders down and nothing playing, the meters were just the same... all metering a constant -17dB, instead of resting on their endstop below the -20dB marking.
I don't have my scope to hand and I'm in the middle of a session, but I'm looking for any advice on what may be causing this. There doesn't seen to be any noticeable problem with the audio signal, so I'm hoping to be able to continue mixing....But it is pretty unnerving seeing something wrong , like that. I should add that when I play the DAW , the audio signals are appearing on the meters..
I wondered if it is probably power supply related since it is common to all the meters. The Soundcraft 2400 manual has great schematics, but it is rather hopeless in this department. There is no info or diagrams for the meterbridge, or the power distribution to the meterbridge, and I'm not even sure which voltage rail feeds these mechanical meters. Online, the only info I found relates to the LED bargraph version which ran on 24v. Not sure that this is the case here, though... My 2400 manual only explains how to change the meter bulbs! Ho humm....
So being with a client, mid-project, I'm in a position where I'm not immediately able to fully investigate , like I usually would, and so I'd be grateful for any insights from anyone who is familiar with this version of the desk.
I did snoop around for schematics from earlier Soundcraft boards with similar looking meters, but didn't find anything relevant.
Any help would be most appreciated.
Many thanks in advance,
nEon
I'm halfway thru mixing an album, and yesterday morning I switch on the board and see that all my VU meters are not resting at -infinity (.. they are all reading around -17dB . Sitting static at that level, with no DAW playing..
As soon as I printed my mix, I pulled everything from the patchbay...and with the board switched off, I worked all the switches on the board..just to try to rule out the obvious. . when I switched the board back on with faders down and nothing playing, the meters were just the same... all metering a constant -17dB, instead of resting on their endstop below the -20dB marking.
I don't have my scope to hand and I'm in the middle of a session, but I'm looking for any advice on what may be causing this. There doesn't seen to be any noticeable problem with the audio signal, so I'm hoping to be able to continue mixing....But it is pretty unnerving seeing something wrong , like that. I should add that when I play the DAW , the audio signals are appearing on the meters..
I wondered if it is probably power supply related since it is common to all the meters. The Soundcraft 2400 manual has great schematics, but it is rather hopeless in this department. There is no info or diagrams for the meterbridge, or the power distribution to the meterbridge, and I'm not even sure which voltage rail feeds these mechanical meters. Online, the only info I found relates to the LED bargraph version which ran on 24v. Not sure that this is the case here, though... My 2400 manual only explains how to change the meter bulbs! Ho humm....
So being with a client, mid-project, I'm in a position where I'm not immediately able to fully investigate , like I usually would, and so I'd be grateful for any insights from anyone who is familiar with this version of the desk.
I did snoop around for schematics from earlier Soundcraft boards with similar looking meters, but didn't find anything relevant.
Any help would be most appreciated.
Many thanks in advance,
nEon