JansZen Electrostatic
(1954 - 1975)

JansZen owner here !
Well... I don't use my JansZen anymore but did for about a decade, with much pleasure.

My own were a swiss version manufactured by Zürich-based BOPP in the early 1970s: the filters were built far better than the originals from Neshaminy and the enclosure was sturdier. The EMT woofer wasn't very good however and as its surrounds started to disintegrate, I swapped them for fast Fentons which had the added advantage to not be too efficient - for a better match with the cells' fairly low SPL. The BOPP Model 704, like the original JansZen Z-410HP, wasn't free of annoyances but careful room-matching (tedious but worthwhile) and some tweaks helped a lot.

Most problematic was a pronounced dip in frequency response between the 25cm woofer and the JansZen array, around 700Hz. Also, the sweet spot was rather narrow - make that quite narrow. If the use of a Behringer parametric EQ treated well the first problem, the sweet spot... nobody could change that :) The need for a very powerful amplifier was taken care of with the use of first a Marantz SM-80 and then a Sony TA-N80ES. But when I decided to restore my Model 704, re-do the filters, go with bi-amplification and all that, I bumped on quite a few disagreable things, the largest of which was the very price of such a restoration :(
I sadly had to drop the matter, and the JansZens, to pursue my music listening with more user-friendly loudspeakers... But I do regret the wonderful qualities of the JansZen cells: speed, definition, depth. I still have the eight cells, just in case I were to feel like launching a DIY hybrid system - someday.

 

The present JansZen company is doing well and has a very complete history section on its own website. You should be able to find almost everything about all JansZen loudspeakers (and variants) at The Audio Circuit, website of which I was an early contributor regarding JansZen (some twenty decades ago).

 

This is an old TVK page.

It will remain online until its new version is ready.

This old page may contain errors and approximations.

Visit the (beta test) of TVK v2 !