I just bought a clone of a well known Limiter whos name I suspect is not to mention here at GDIY...
But unfortunately, this build, or all of them?, do have issues with the metering being way of when it is supposed to show the first 3.5dB of limiting. In other words the last four leds showing 1 dB peak reduction, seems to show the right amount of reduction, but the blue leds that is supposed to show half steps of the first 3.5 dB of limiting is totaly unusable (for example, the step between -3.5 and -3dB is actually 8dB, and is showing the signal about 5 db below the limiting threshold... and so on... So the blue leds are not doing what they are supposed to do, but instead showing the signal way below threshold, which is kind of useless).
All the components seems to be in the right places with corect values according to BOM and one doc showing component placement on PCB. I got no schematic or anything else that could be of help doing troubleshoting.
Anyone here familiar with this build?
Please PM me if you do have any info to share!
/ Mattias
.... I attached a pic showing the section that I suspect is faulty in some way... all the compoments in the metering sectiont seems to have the right value and in the right places, so without a schematic I'm trying to get my head around this using logic reasoning and studying led meters using the LM339 circuit...
But unfortunately, this build, or all of them?, do have issues with the metering being way of when it is supposed to show the first 3.5dB of limiting. In other words the last four leds showing 1 dB peak reduction, seems to show the right amount of reduction, but the blue leds that is supposed to show half steps of the first 3.5 dB of limiting is totaly unusable (for example, the step between -3.5 and -3dB is actually 8dB, and is showing the signal about 5 db below the limiting threshold... and so on... So the blue leds are not doing what they are supposed to do, but instead showing the signal way below threshold, which is kind of useless).
All the components seems to be in the right places with corect values according to BOM and one doc showing component placement on PCB. I got no schematic or anything else that could be of help doing troubleshoting.
Anyone here familiar with this build?
Please PM me if you do have any info to share!
/ Mattias
.... I attached a pic showing the section that I suspect is faulty in some way... all the compoments in the metering sectiont seems to have the right value and in the right places, so without a schematic I'm trying to get my head around this using logic reasoning and studying led meters using the LM339 circuit...