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Re: Pro 2 AD Conversion - why high pass at 30hz ?We talked about this a while back in the thread about DriveRack DSP measurements. The blocking ahead of the ADC could easily be as high as 30Hz. This could either be due to transformer selection or size of DC block caps in an op amp model. In audio gear there seems that there almost always will be DC block presented in some sort. High end pre-amplifiers will be as low as 0.1Hz. Low end stuff I have measured all the way up to 60-100Hz with some pull down (-3dB at 20Hz is the spec they shoot for it seems.)
Re: Pro 2 AD Conversion - why high pass at 30hz ?
We talked about this a while back in the thread about DriveRack DSP measurements. The blocking ahead of the ADC could easily be as high as 30Hz. This could either be due to transformer selection or size of DC block caps in an op amp model. In audio gear there seems that there almost always will be DC block presented in some sort. High end pre-amplifiers will be as low as 0.1Hz. Low end stuff I have measured all the way up to 60-100Hz with some pull down (-3dB at 20Hz is the spec they shoot for it seems.)
