"potting compound for the ?PLL? dries out and fails."

JS Not sure I understand...I''ve never heard of this.

Actually, a side-by-side test of an R5000 and a R2000 using an outboard
speaker on both will reveal a much clearer audio on the R5000. The
R2000 can sound a bit muffled by comparison. I ran numerous
side-by-side comparisons in the former local SWL store before deciding
on the R5000. The king of muddy audio has to be the Japan Radios
however.