Mark Rehorst's Tech Topics

I rebuilt my ESL-63s using a diaphragm stretcher made from MDF and wood. It worked well, but after multiple uses, adhesive from the tape us...

What's the simplest user interface of all? Creating new patterns to run on on a sand table using Sandify is a complicated process that ...

If you're of a certain age, you'll immediately recognize this image: It's from an ad for Maxell cassette tapes that came out in ...

I recently prepared a very long post on my efforts to restore a pair of Quad ESL-63 electrostatic loudspeakers made in 1983. That post was ...