Hi,
Use an hair blower and try to heat the amplifier slowly and see if the pops come up. Do not use the high setting or do not get heat gun nozzle too close to the board.
Use an hair blower and try to heat the amplifier slowly and see if the pops come up. Do not use the high setting or do not get heat gun nozzle too close to the board.
Tauro, thanks, but. . . We've eliminated the amp as the source, by both replacing the amp with a known-good amp (no change), and by running the system with the mixer/dsp off (no pops). We've also run the mixer/dsp with all the inputs disconnected, and it still pops, so it's not mic cables or wireless receivers.
The mixer/dsp folk want us to have a "professional" look at it before they pull it and test it themselves. *sigh*
The mixer/dsp folk want us to have a "professional" look at it before they pull it and test it themselves. *sigh*
As far as I can tell, we have just two sources left for these pops. 1. mixer/dsp and 2. power line transients that only the mixer/dsp is sensitive to.
We already have a sequencer/line filter in system, everything plugs into that...
We already have a sequencer/line filter in system, everything plugs into that...
I'm sorry, I don't know his exact title. One of the executives... Not a support engineer. He does come to our Church, so he's handy....
Oh. let him know I will be glad to send you an Ashly to replace your Biamp piece. (it is under warranty?)
"Biamp products work as promised. Period.
By having everything under one roof we are able to elevate the usability and performance of our products. 100% of the hardware manufactured in our facility receives a full functional test before being shipped. Likewise, quality assurance occurs at several points along the manufacturing process, and our QA teams typically test firmware and software 90-120 days prior to release. The result is a level of innovation and reliability that can't be matched — from award-winning hardware solutions to intuitive software with one-touch system compilation."
"Biamp products work as promised. Period.
By having everything under one roof we are able to elevate the usability and performance of our products. 100% of the hardware manufactured in our facility receives a full functional test before being shipped. Likewise, quality assurance occurs at several points along the manufacturing process, and our QA teams typically test firmware and software 90-120 days prior to release. The result is a level of innovation and reliability that can't be matched — from award-winning hardware solutions to intuitive software with one-touch system compilation."
ir signal from a nearby store with automatic door opener. a real longshot but I have heard of this happening. or internal overloads on active speakers.
Simon, no it's not under warranty. We've been having the same issue since installatoin, 6 years ago, but nobody bothered to complain until we had a loud pop during a wedding, loud enough to make the bride and the organist jump....
Walters, it's hard to imagine IR getting to the closed cabinet where the equipment lives. None of our speakers are active, and we've eliminated the amps as being the issue.
Walters, it's hard to imagine IR getting to the closed cabinet where the equipment lives. None of our speakers are active, and we've eliminated the amps as being the issue.
hi ,
Is it possible to put a scope on this to see if the pulse can be captured? Or record the sound and play it back till it's visible on a scope to see what it's time base and duration are?
Does it happen at a exact time or is it purely random?
If you have a video camera it can be recording a normal scope screen and audio , if digital storage is not available,cheap storage scope !
NS
Is it possible to put a scope on this to see if the pulse can be captured? Or record the sound and play it back till it's visible on a scope to see what it's time base and duration are?
Does it happen at a exact time or is it purely random?
If you have a video camera it can be recording a normal scope screen and audio , if digital storage is not available,cheap storage scope !
NS
The manufacturers I use would still fix it! Really. Of course many folks figure a sound system should last eight years, so you might want to retire it early.
http://www.ebay.com/itm/BSS-Soundwe...002?pt=LH_DefaultDomain_0&hash=item5b0c43fc32
Would replace it for $150.00 but you will need to program it with RS-232.
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NoSmoking, a scope hadn't occurred to me. Since I do record services, I could certainly do that. I think I'd jack into the panel rather than recording what is ambient in the hall, though.
I did connect my laptop to the system, and record the level meters one time, but all that really told me is that the pop came through the speakers. I knew that already. Totally random, except we don't seem to get as many when it's raining. Still sounds like a static discharge to me, and that's exactly what the pops sound like.
The manufacturer is willing to "go through" the device, but we would really rather not do without it while they're doing that. Guess that's really the next step.
I did connect my laptop to the system, and record the level meters one time, but all that really told me is that the pop came through the speakers. I knew that already. Totally random, except we don't seem to get as many when it's raining. Still sounds like a static discharge to me, and that's exactly what the pops sound like.
The manufacturer is willing to "go through" the device, but we would really rather not do without it while they're doing that. Guess that's really the next step.
Hi,
Is there a way you can check the humidity in the room? If it is to dry it may caused static. You mentioned that when it is raining the pops diminished.
Is there a way you can check the humidity in the room? If it is to dry it may caused static. You mentioned that when it is raining the pops diminished.
even analog systems can be plagued by static discharge if the room is carpeted and has air conditioning it's a recipe for static. find some leather soled shoes take a brisk walk and touch the mixer or system components and see if you can replicate or trigger the pop.
Yes, I'm familiar with all that. Please remember, we've already tested the system with ALL INPUTS DISCONNECTED, and still get pops. Disconnect dsp box, no pops. All the live equipment is well isolated behind a locked panel under the choir loft.... Nobody is touching it during a service.
You really think the pops would change if we shorted all the inputs? All input gains were set to zero, too...
Before I go to the trouble of doing that, how about a theory for how the pops get generated and through the inputs when disconnected. The level of the pops hasn't changed with connected or disconnected inputs, input gain set to zero or at normal levels... To me that indicates something past the gain stages and past the mixer stages....
This is just good practice. If the noise goes away when the shorting plugs are in place, then the problem is fixed. If not, that is more evidence that the problem is internal.
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