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#1
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
I'm having an issue with my 1402-VLZ Pro. I'm not sure what (if
anything) I can do about it. In the main mix, when the right channel registers approx 0, the left channel is about -20 to -10 on the meter. As I crank the main faders up, they get closer in volume, but the left is always lower than the right. If I route the channel to the ALT-3/4 mix, and make it the C-R/Source, I can see that left and right signals are in perfect sync. So this panning problem is only happening on the main mix. By changing the channel's pan to about 10 o'clock I get left/right to register evenly in the main mix. Summary of events: - All pans at 12 o'clock - Same problem for all channels (XLR or Phono) - Main Mix: left channel is weaker than right channel - ALT-3/4 Mix: panned properly - C-R/Source levels confirm what I'm also hearing - Used Deoxit on all input/output jacks (just in case) Any idea what's going on here? |
#2
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
As I crank the main faders up, they get closer in volume, but the left is always lower than the right. When you crank up the main fader, they get closer in volume AS MEASURED IN dB or just the LED indicators are closer together in distance? Is the sound level at the output also unbalanced or only the meter indication is unbalanced? Sounds like you simply have low gain on the left side for some reason.. Mark |
#3
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
When you crank up the main fader, they get closer in volume AS
MEASURED IN dB or just the LED indicators are closer together in distance? The LED indicators show the left/right signals get closer as I crank up the main faders. I can also hear the levels balance a bit more as the faders come up. I don't have anything to measure the actual dB output, but the difference is certainly audible. Is the sound level at the output also unbalanced or only the meter indication is unbalanced? Unfortunately, the audio is also off-pan -- but only for the Main mix (not ALT-3/4). I really hate to throw out this mixer, but I also hate paying $125 bench fee for a 10 year old mixer. Any advise? |
#4
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
Bluesbreaker wrote:
I'm having an issue with my 1402-VLZ Pro. I'm not sure what (if anything) I can do about it. In the main mix, when the right channel registers approx 0, the left channel is about -20 to -10 on the meter. As I crank the main faders up, they get closer in volume, but the left is always lower than the right. If I route the channel to the ALT-3/4 mix, and make it the C-R/Source, I can see that left and right signals are in perfect sync. So this panning problem is only happening on the main mix. Any idea what's going on here? Sounds like a problem with the main outputs. You may have a loose or dirty ribbon cable connector. It's a common problem with these mixers. If you can take it apart far enough to get to the ribbon cables, you can disconnect them, clean them with DEoxit, and put it back together. Remove one at a time so you'll get them back in the right place. A shop can do that (and do a more complete troubleshooting job) but it'll probably cost you $100 or so, because that's about what it's worth to take it apart and put it back together again. |
#5
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
Bluesbreaker wrote:
I really hate to throw out this mixer, but I also hate paying $125 bench fee for a 10 year old mixer. Do you need it? If so, what would you replace it with and how much would that cost? |
#6
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
In article ,
Bluesbreaker wrote: I'm having an issue with my 1402-VLZ Pro. I'm not sure what (if anything) I can do about it. In the main mix, when the right channel registers approx 0, the left channel is about -20 to -10 on the meter. As I crank the main faders up, they get closer in volume, but the left is always lower than the right. If I route the channel to the ALT-3/4 mix, and make it the C-R/Source, I can see that left and right signals are in perfect sync. So this panning problem is only happening on the main mix. By changing the channel's pan to about 10 o'clock I get left/right to register evenly in the main mix. Summary of events: - All pans at 12 o'clock - Same problem for all channels (XLR or Phono) - Main Mix: left channel is weaker than right channel - ALT-3/4 Mix: panned properly - C-R/Source levels confirm what I'm also hearing - Used Deoxit on all input/output jacks (just in case) Any idea what's going on here? This MIGHT be a grounding issue. Pull it open, clean the ribbon cable connectors with Deoxit and see what happens. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#7
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
Sounds like a problem with the main outputs. You may have a loose or
dirty ribbon cable connector. It's a common problem with these mixers. If you can take it apart far enough to get to the ribbon cables, you can disconnect them, clean them with DEoxit, and put it back together. Remove one at a time so you'll get them back in the right place. Thanks for the great advise. I'll pop it open when I get home and and clean the ribbon connections. |
#8
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
On Mon, 28 Dec 2009 19:41:54 -0800 (PST), in 'rec.audio.pro',
in article Mackie 1402-VLZ Pro: Main mix prefers right vs left, Bluesbreaker wrote: I'm having an issue with my 1402-VLZ Pro. I'm not sure what (if anything) I can do about it. In the main mix, when the right channel registers approx 0, the left channel is about -20 to -10 on the meter. As I crank the main faders up, they get closer in volume, but the left is always lower than the right. If I route the channel to the ALT-3/4 mix, and make it the C-R/Source, I can see that left and right signals are in perfect sync. So this panning problem is only happening on the main mix. By changing the channel's pan to about 10 o'clock I get left/right to register evenly in the main mix. Summary of events: - All pans at 12 o'clock - Same problem for all channels (XLR or Phono) - Main Mix: left channel is weaker than right channel - ALT-3/4 Mix: panned properly - C-R/Source levels confirm what I'm also hearing - Used Deoxit on all input/output jacks (just in case) Any idea what's going on here? I doubt that this is it, but you might want to check the position of the SOLO MODE button to ensure that it's in the up ("NORMAL (AFL)") position and not in the down ("LEVEL SET (PFL)") position. -- Frank, Independent Consultant, New York, NY [Please remove 'nojunkmail.' from address to reply via e-mail.] Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/ (also covers AVCHD and XDCAM EX). |
#9
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
On Dec 28, 10:41*pm, Bluesbreaker wrote:
I'm having an issue with my 1402-VLZ Pro. I'm not sure what (if anything) I can do about it. In the main mix, when the right channel registers approx 0, the left channel is about -20 to -10 on the meter. As I crank the main faders up, they get closer in volume, but the left is always lower than the right. If I route the channel to the ALT-3/4 mix, and make it the C-R/Source, I can see that left and right signals are in perfect sync. So this panning problem is only happening on the main mix. By changing the channel's pan to about 10 o'clock I get left/right to register evenly in the main mix. Summary of events: - All pans at 12 o'clock - Same problem for all channels (XLR or Phono) - Main Mix: left channel is weaker than right channel - ALT-3/4 Mix: panned properly - C-R/Source levels confirm what I'm also hearing - Used Deoxit on all input/output jacks (just in case) Any idea what's going on here? Also: Make sure there is no feed back loop: for example, main outs to a cassette deck, whose outputs then come back to inputs on the mixer. This has happened to me with Mackies, and it weirdly affects the output levels, even if the cassette deck is potted all the way down! |
#10
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
I doubt that this is it, but you might want to check the position of
the SOLO MODE button to ensure that it's in the up ("NORMAL (AFL)") position and not in the down ("LEVEL SET (PFL)") position. Thats not it. However, when in LEVEL SET (PFL) mode, the pan sounds normal. |
#11
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
Also: Make sure there is no feed back loop: for example, main outs to
a cassette deck, whose outputs then come back to inputs on the mixer. This has happened to me with Mackies, and it weirdly affects the output levels, even if the cassette deck is potted all the way down! I've eliminated as many variables as possible. Single mic into any channel. Monitoring with headphones. If I C-R/SOURCE the main mix, I can see (and hear) the panning problem. If I route to the ALT-3/4 all is good. |
#12
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
Sounds like a problem with the main outputs. You may have a loose or
dirty ribbon cable connector. It's a common problem with these mixers. If you can take it apart far enough to get to the ribbon cables, you can disconnect them, clean them with DEoxit, and put it back together. Remove one at a time so you'll get them back in the right place. Well, I've cracked open the mixer. There are only a few ribbon cables. All are soldered rather than being attached via a plug. I'm not sure that DeOxit will help in this case. |
#13
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
Bluesbreaker wrote:
Well, I've cracked open the mixer. There are only a few ribbon cables. All are soldered rather than being attached via a plug. I'm not sure that DeOxit will help in this case. If there are no connectors, it's been modified, probably by someone who decided that was the ultimate solution to the ribbon cable problem. I don't know what to tell you but it sounds like a shop job to me. |
#14
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
..
Well, I've cracked open the mixer. *There are only a few ribbon cables. *All are soldered rather than being attached via a plug. *I'm not sure that DeOxit will help in this case. where are you located? Mark |
#15
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
I know it's late, but was the problem solved? I have the same on the right channel. Drive Main Mix all the way up and the channels synch. If I go over normal in sending AUX on the channel, however, makes the right channel go down again...
On Monday, 28 December 2009 22:41:54 UTC-5, Bluesbreaker wrote: I'm having an issue with my 1402-VLZ Pro. I'm not sure what (if anything) I can do about it. In the main mix, when the right channel registers approx 0, the left channel is about -20 to -10 on the meter. As I crank the main faders up, they get closer in volume, but the left is always lower than the right. If I route the channel to the ALT-3/4 mix, and make it the C-R/Source, I can see that left and right signals are in perfect sync. So this panning problem is only happening on the main mix. By changing the channel's pan to about 10 o'clock I get left/right to register evenly in the main mix. Summary of events: - All pans at 12 o'clock - Same problem for all channels (XLR or Phono) - Main Mix: left channel is weaker than right channel - ALT-3/4 Mix: panned properly - C-R/Source levels confirm what I'm also hearing - Used Deoxit on all input/output jacks (just in case) Any idea what's going on here? |
#16
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
In article ,
wrote: I know it's late, but was the problem solved? I have the same on the right channel. Drive Main Mix all the way up and the channels synch. If I go over normal in sending AUX on the channel, however, makes the right channel go down again... All kinds of bad connection issues will present like that. Most notably the notorious ribbon cable problem that many Mackie mixers had. My inclination is to cramolin and reseat the ribbon cable and see if that fixes it, and if it does replace the ribbon cable. If not, start looking for cold solder joints and bad coupling capacitors. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#17
Posted to rec.audio.pro
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Mackie 1402-VLZ Pro: Main mix prefers right vs left
wrote in message ... I know it's late, but was the problem solved? I have the same on the right channel. Drive Main Mix all the way up and the channels synch. If I go over normal in sending AUX on the channel, however, makes the right channel go down again... On Monday, 28 December 2009 22:41:54 UTC-5, Bluesbreaker wrote: I'm having an issue with my 1402-VLZ Pro. I'm not sure what (if anything) I can do about it. In the main mix, when the right channel registers approx 0, the left channel is about -20 to -10 on the meter. As I crank the main faders up, they get closer in volume, but the left is always lower than the right. If I route the channel to the ALT-3/4 mix, and make it the C-R/Source, I can see that left and right signals are in perfect sync. So this panning problem is only happening on the main mix. By changing the channel's pan to about 10 o'clock I get left/right to register evenly in the main mix. Summary of events: - All pans at 12 o'clock - Same problem for all channels (XLR or Phono) - Main Mix: left channel is weaker than right channel - ALT-3/4 Mix: panned properly - C-R/Source levels confirm what I'm also hearing - Used Deoxit on all input/output jacks (just in case) Any idea what's going on here? If you push both left and right faders up to max and they are both at the same output level, then you have a problem with one or both faders not tracking properly. Possibly someone has replaced one of them with a non Mackie fader with a different profile. Gareth. |
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