A year ago our last scheduled open house for SFAS members was cancelled due to COVID concerns, but we are now ready to try again.
Those of you in the south bay, or who are willing to travel to San Jose, are welcome to visit. Due to health concerns, *to attend you must be vaccinated, but beyond that, please come and have fun. Drinks and refreshments will be provided.
Join us for what most assuredly will be an interesting and informative afternoon with Frank Doris. Besides being a truly great person, Frank’s vast experience across many facets of the audio world will provide some fascinating conversation. Here’s a brief intro from Frank:
“I’ve been an audiophile since I was a teenager and always interested in sound, although I couldn’t afford any good gear until after college. I worked for Harry at TAS for about seven years and wrote for them a lot longer,
The highlight of this event is “single-driver speakers” introducing the Sibelius speakers from Pearl Acoustics. We will listen to two systems: first a brief listen to a DIY amp and single-driver speakers followed by a more extensive listen to affordable commercial equivalents. The goal is to dispel the notion that modern single-driver speakers are “very limited”. This is definitely not your father’s Oldsmobile . . .
Place: near Montague Expressway and River Oaks Dr., San Jose.
Join us for an opportunity to hear the latest version (revision) of the Linkwitz open baffle LX521-4 The Reference speaker system (https://linkwitz.store/product/lx521/). With new drivers, newly re-designed analog active crossovers and power amps resulting in a speaker system that sounds truly exceptional!
Here’s an excerpt from a review of the LX521 The Reference speakers by Jack Vad, San Francisco Symphony, GRAMMY winning Producer & Engineer:
“I didn’t have any other speakers that could reveal as accurate a sound stage,
Back by popular demand, a second Linkwitz LX521-4 Speaker event has been added.
PLUS, Dr. Frank Brenner is planning on attending the event in Healdsburg. Dr. Frank Brenner, who has taken up the administration of Linkwitzlab.com from his hometown of Stuttgart, Germany. (Siegfried Linkwitz passed away in 2018.)
Frank left a career as a physician to become an airline pilot for Lufthansa, and currently makes not-so-regular flights to California. His interest in building speakers led him to research on the Internet and,
Join us for an interesting and informative afternoon with Ralph Karsten, founder and CEO of Atma-Sphere. Ralph will discuss his background, how he got into the HiFi business, his unique approach to amplifier design and the latest product line he’s working on – a class D GaN amplifier. It should be an fascinating discussion how he’s decided to add such a different design choice in comparison to his OTL tube amplifiers.