SPEAKER DRIVER TECHNOLOGY: A planar ribbon is fundamentally different than an electrostat and, because of that, they sound quite different too

In both types of drivers, we start with the same sort of plastic substrates like Mylar or Kapton, but there the two radically depart. To make a ribbon driver we need to layer on a thin sheet of copper in the form of a coil, then add tension to this diaphragm and suspend it between […]

Read More

ACOUSTIC RESEARCH (AR) – What happened?

Michael Vronsky …. From time to time we wondered this too. This time though, we did a bit of searching and this is what we found: USA based producer of loudspeakers, founded in 1954 by Edgar Villchur, Henry Kloss, Malcolm Lowe and J. Anton Hoffman, and started out by producing acoustically suspended loudspeaker called the […]

Read More

JBL: S4700 four recent images + useful links

Just received these from a reader and so, thank you Miles. Neil M.   https://www.audioholics.com/tower-speaker-reviews/jbl-synthesis-s4700-pre http://www.audioheritage.org/vbulletin/showthread.php?35990-JBL-S4700-Seems-to-be-poorly-made! https://www.stereophonic.com.au/jlb-s4700-floorstanding-speaker/ http://www.audioheritage.org/vbulletin/showthread.php?38053-Just-in-JBL-4367-versus-JBL-S4700-comparison/page2

Read More

LOUDSPEAKER MEASUREMENTS: Axiom, B&W, Dahlquist, Focal, JBL, Magico, Morel, PSB and many more

Written in 2009 With the cooperation of Canada’s National Research Council (NRC), in the year 2000 the SoundStage! Network began measuring and publishing objective measurements of loudspeaker products — a first for online publications. The NRC’s legacy of producing accurate loudspeaker measurements goes back decades. Literally thousands of speakers have been measured in their facilities […]

Read More