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Technical and scientific discussion of amps, cables and other topics.

I use attenuators myself

and used a spreadsheet based calculator to determine HF rolloff at various attenuation levels. With my 75 ohm source, 160 pf cables (two meter), and 133k ohm amp, it is virtually non-existent up to well over 100 khz. I would agree, however, that attenuators or high output Z preamps do not work with every system given all the variables.

I did, however, have an amusing exchange with SM on this topic a while back. While the images are no longer available due to an ISP change, download the calculator and plug in my values if you wish to see the curves.

Assumptions Anyone?

The DACT calculator can be found here

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  • I use attenuators myself - E-Stat 14:53:44 08/22/06 (0)


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