Marcel van de Gevel's article

Marcel van de Gevel's article in Vol 4 'A tube-based phono preamplifier' was concluded with a sidebar, starting on page 128, under the heading 'Phono amplifier with a +1 term'. Some of the time constant notations did not make it through the layout process unscathed. Here is the corrected section, with apologies to Mr. van de Gevel - ed.