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Meetings and other Notices


TIME: Sunday, 7:00 PM, October 25, Eastern Time
PLACE: Zoom/Virtual Video Conference
FEATURED GUEST: Peter Ledermann, President/Chief Engineer

TOPIC: Fixed Coil vs. Moving Coil Cartridges, Loudspeakers (Bozak), Amplifiers+++

Peter Ledermann has a long history in audio that stems from his very early years, initiating from a deep fascination with science, nature, and music. He opened the Soundsmith repair center for high end audio in 1969 at Audio Experts in White Plains NY, and taught audio engineering and service as he has done continuously for the past 47 years.

In Peter’s words: In 1973 he was offered a position with RAM Audio in Danbury Connecticut. Peter was responsible for assisting with engineering and oversaw all of manufacturing and training production personnel in manufacturing two high end power amplifiers as well as two preamplifier designs, and a Strain Gauge cartridge/preamp system.

In 1976 Peter became Director of Engineering at the Bozak Corporation in Norwalk Connecticut. He re-engineered an analog rear channel delay system, all of Bozak’s complete line of varied electronics, and developed a new aluminum cone 6” wideband driver for his new miniature Bozak speaker model MB-80.

In 1991, Peter left IBM to pursue the Soundsmith effort full time. He continued to mentor and teach audio engineering through service, designed and developed his own line of speakers, amplifiers, preamplifiers and continued to develop new ideas for cartridges.

In addition to being an artist and world-renowned audio engineer, Ledermann is also a published poet., here:


Sunday, 7:00 PM, October 25, Eastern Time:

Meeting ID: 823 7780 6935

Password: 04763

If you are using a computer and this is your first time with Zoom, give yourself at least 15-20 minutes prior to the meeting to set things up: you click on the link in the Zoom instructions below and will be guided to download the Zoom software, HERE:

You can use your computer’s audio if you have a headset attached, or you can dial-in for audio. If you have a smart phone or tablet and a good internet connection, then you should install the Zoom app for your device and connect using it.

See below for dial-in instructions for the Zoom meeting. If you do not have a computer or smart phone/tablet, you can just dial one of the numbers and join for audio only; use your touch tone dialer to enter the meeting number and password when prompted.

Dial by your location

+1 646 558 8656 US (New York)

+1 312 626 6799 US (Chicago)

+1 669 900 9128 US (San Jose)

+1 253 215 8782 US

+1 301 715 8592 US

+1 346 248 7799 US (Houston)

or find your local number:
(scroll all the way down to 'United States of America')

October 2020

1.  Haniwa Audio has previously presented its products at BAS meetings ( 08/2018, 07/2020 and 02/2019 ) and hosted a BAS meeting in its office. They have created several leading edge products which have been very positively received in the audio world. Haniwa has approached the BAS with an interesting offer. They are looking for two BAS members who are interested in reviewing a Haniwa product. Haniwa is offering for review the low impedance phono cartridge with interface unit and the loudspeaker with DSP amplifier system. There would be a 30 day in-home review period resulting in a report written by the reviewer and a later BAS meeting presentation of the experiences. Haniwa may assist in the home installation to ensure the proper operation of their products. The written report may be subject to publication.

2.  In January, President Trump’s campaign team played the R.E.M song “Everybody Hurts” at a rally in Milwaukee. R.E.M took exception -- ”Please know that we do not condone the use of our music by this fraud and con man,” bassist Mike Mills posted on Twitter.

Aerosmith’s singer Steven Tyler doubled down on his objection two years ago, after Trump used the band’s “Livin’ on the Edge” at a speech in West Virginia. “No is a complete sentence,” Tyler tweeted.

After the Rolling Stones complained repeatedly about his affinity for their end-of-era epic “You Can’t always Get ‘What You Want” (odd counsel from an elected official, no?) the music rights organization BMI told Deadline that the Trump campaign has a “Political Entities License,” which allows it to use any of the 15 million songs within BMI’s purview, unless the artist submits a formal request for exclusion. — Boston Globe 10Jl20

3.  Heeere’s the pitch...and the crowd goes (choose one) “Wild.” “Disconsolate.” “Meh.” Such are the decisions facing an anonymous Red sox employee entrusted with speaking, cheering and grumbling for the 37,000-plus fans who will not pack Fenway Park for each game this season. The noises will be piped in over the public address system. A ubiquitous “crowd murmur” will be always set to “on."

...Something like a sitcom laugh track. — Boston Globe 24Jl20

4.  The BAS is still looking for an assistant editor. The B A S Speaker’s Editor seeks one or more individuals who will serve as an assistant editor, for no more than modest remuneration from the BAS. Functions will include writing, editing, fact-checking, finding topics and articles for synopsis and reprint, obtaining reprint permission, and (to paraphrase the catch-all expression from job descriptions I worked under as a Federal civil servant) other duties as negotiated. If interested, call me to discuss. David J. Weinberg. 301-593-3230.

email me here

Below, other meetings and notices which
may be of interest to BAS members

In September 2009 the B A S held a microphone clinic, testing 37 different microphone models. The ambitious nature of the clinic effort, the extent of data collection, the number of individuals involved in microphone testing and in writing various sections of the report, and the complexity in determining how to construct the clinic report and make it available to members resulted it not being published until now. The dataset is extensive.

Representative samples were included in the abbreviated report in "The B A S Speaker"
(Fall 2015; v37n3)

Go to the MICROPHONE CLINIC PAGE for more...

When collecting and plotting "noisy" data it is often useful to have Microsoft Excel plot a Trend Line through it.  If that data is to be used for further work, it may be necessary to have an X-Y table of the Trend Line. That is not easy to get and this paper will show how to do it.
Joseph DeMarinis has a new article here: Extracting Numerical Data from an Excel Trend Line

Foster's Test Bench !
by Alvin Foster !    Click the logo: —>
The rapidly-becoming-famous BAS Headphone Test Article is now available in the BASS VOLUME 25, ISSUE 4, on Page 17, available HERE   PDF 3mb
Visit our PODCAST PAGE for:
The LIVE video podcast of our meetings,
Archived video of past meetings (only one so far!),
and Audio Podcast interviews by Alvin Foster
There is a supplemental and further explanation addendum paper to the E. Brad Meyer / David Moran paper published in the September, 2007 issue of the AES Journal. That page, which documents the experimental protocol and audio systems/source material is here:   
There is a Power Point Presentation of the lecture given by Dr. Barry Blesser at the March 2007 Meeting. The Meeting page synopsis is HERE; the Power Point Presentation (as a web page) is HERE

Some earlier BASS issues, previously available only directly by mail, are now available online, on the BAS SPEAKER page, HERE

Show your appreciation for the immense amount of dedicated work that went into both the original writing, gathering, editing and printing, PLUS the more recent scanning and conversion to PDF format, by joining the Society, HERE !

A L L   O F F S I T E   L I N K S   O P E N   I N T O   A   N E W   W I N D O W


AES Future Meetings

Acoustical Society of America
SMPTE New England

There is a posting of an ABX article, The Digital Challenge by Stanley P. Lipshitz HERE

Webmaster's Corner:

Once again, for 2020 - and on through 2021 is THE useful industry calendar of audio/related events, with kudos to all who put this list together:

Separately, AV-IQ has their event page here:



The Boston Audio Society
PO BOX 260211
Boston MA 02126

updated 10/11/20