Hi, Steve, He last emailed the list on May 9th: George Brock-Nannestad <[log in to unmask]> There is a "de-bleed" function in RX6 that is meant for removing headphone monitor bleed and while I haven't played with it for print-through (which has similar characteristics to groove echo, I think, except that the groove echo delay would be constant whereas print through delay would not be). Looking at the De-bleed module in RX6, it says "Select a bleed source track that is time-aligned with the bleed present in your active track and click Learn." So it seems they're addressing one of the two hard parts: Frequency matching, while making you do the other hard part: time alignment. You can select the bleed source and program files separately, it seems. I think there is a 30-day trial of RX, but I don't know if you can install a trial of the upgrade. You might be able to because each major revision lives in its own folder, so it's possible to have multiple major revisions on your computer (at least in Windows). Cheers, Richard On 2018-06-25 9:38 PM, Steve Smolian wrote: > Has anyone measured the frequency range of acoustic records? > > > > I seem to recall George Brock-Nannastadt published this info somewhere but > can't locate it. > > > > Also, has anyone his email address? He's not in the ARSC directory. > > > > Steve Smolian > -- Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada 647 479 2800 http://www.richardhess.com/tape/contact.htm Quality tape transfers -- even from hard-to-play tapes.