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Boston Audio Society
FOUNDED 1972

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Meetings and other Notices

The Boston Audio Society now has its own YouTube channel:
www.youtube.com/@bostonaudiosociety

The October Zoom Meeting

Date: Tuesday, October 27, 2026

Time: 7-9 pm EST

Place: ZOOM Only

Topic: The Battle of Light and Sound: Report from CEDIA

Speaker: Ken Wacks

CEDIA is a trade association for custom integrators of audio/video (A/V) and home systems. CEDIA Expo held each September is an opportunity for suppliers to showcase leading-edge products to these integrators. This market can be lucrative since CEDIA integrators combine audio/video and home automation products to offer custom solutions. Their market ranges from high-end to the elite with some budgets in the millions of dollars for home theaters.

Ken Wacks will present a compilation of the CEDIA Expo 2026 exhibits that got his attention as novel or unusual. He is planning to include descriptions, photos, and video clips covering loud speakers, A/V networks, lighting, and control systems.

 

 

The Boston Audio Society is a gathering place for audio and video hobbyists. For 53 years, we have worked diligently to create an atmosphere of consumer, audio education at its best.

 

Join Zoom Meeting

https://us06web.zoom.us/j/86530168861?pwd=ibtWPYYHWj1x80pMswaw6vklevfeaP.1

Meeting ID: 865 3016 8861, Passcode: 867871

You can ALSO click on this link and simply DIAL IN to participate:

https://us02web.zoom.us/u/kcgU8tvYvR

 

Hope to see you there.

THE BAS MESSAGE
October 2026

Miscellaneous News

1.  For 15 years, Kelly Pribble, working for Iron Mountain, has been at the forefront of an obscure but vital industrywide effort to save old tapes — for which he employs an assortment of handmade tools and Rube Goldberg-worthy machines in a cramped workshop. 

Some of the most jeopardized recordings are from the 1970s and ’80s, after manufacturing changes introduced problems that became evident only with time. Unless the tapes are properly preserved, their slow decay will threaten the survival of original recordings from vast swaths of music history.

“It’s a race against time,” Pribble said.

 In 2011, the company sent Pribble to examine problems among a cache of thousands of audiotapes in Brazil. Many had been affected by mold, a common hazard plaguing tapes not held in a climate-controlled environment.

Another routine problem among tapes of 1970s and ’80s vintage is “sticky shed syndrome.” Also known as hydrolysis, it is a deterioration in the material that holds together a tape’s oxide — the magnetic compound that contains its audio information — resulting in a residue that can destroy the tape if it is played. The fix, long established, involves “baking” tapes in an oven to release trapped moisture.

But what Pribble saw in Brazil, he said, was far worse. More than a thousand tapes were bound together so tightly on their reels that they seemed like a solid mass. With others, an oily lubricant had leached to the surface.

He experimented with solutions and built prototypes to repair the tapes, a process that took three years.

His unbinding process involves soaking tapes in a solution of deionized water — he declined to specify the formula, calling it a trade secret — for as long as a month. He then places the tapes in a tub with an ultrasonic cleaner, which sends an army of tiny bubbles to penetrate between the tape’s layers.

Pribble was sent about 350 tapes of live recordings from Springsteen’s archive. More than 100 exhibited what Pribble calls “loss of lubricant syndrome,” in which a gooey, beige material collects on the tape head when played, distorting the audio and possibly damaging the equipment.

His weapon to attack this problem is a humble roll of pellon — the white adhesive used in waxing salons — which he affixes to a paintbrush-size handle made from PVC plumbing pipes. He removes the excess lubricant by rotating the pellon back and forth against the tape as it rolls through a decommissioned deck, one song at a time. Its clean state may last only 30 days — long enough to transfer its contents to another format, usually digital.

Another engineer spent 100 hours cleaning mold off of tapes with lighter fluid.

New York Times, December 1, 2025

 

 


 

Boston Audio Society

PO BOX 260211
BOSTON, MA 02126
978-944-6481



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

JUST RELEASED !
A fantastic historical video!

Ken Berger and Kenton Forsythe are the founders of EAW (Eastern Acoustics Works) and they discuss, with terrific overlaid graphics, the history of, well, pretty much every audio thing Boston from the early 70's.
18 minutes and right here: https://youtu.be/fPfQEK0b0mI

GBH Awarded $16 Million to Digitize Radio, TV Broadcasts
www.radioworld.com/news-and-business/gbh-awarded-16-million-to-digitize-radio-tv-broadcasts

A Boston issue - As MIX magazine reports:

Sound Museum owners cry foul as their tenants likely secure new spaces without them

While the headline sounds like someone has sour grapes, the complete story of how the closure of this crucial Boston rehearsal studio is being handled is far more nuanced and complicated -- particularly since it brings up issues of gentrification, government support of the arts, non-profits' ethics and more. Full Story HERE  (WBUR-FM Boston (1/11/23)

And here's an update:
www.wbur.org/news/2023/01/25/charlestown-rehearsal-studios-musicians-boston


MAHLER 3

In the recent (April 2022) performance of Mahler’s Third Symphony at Boston's Symphony Hall by Ben Zander and his Boston Philharmonic, the recording was done with the three main spaced omnis with two more farther back. No accent mikes or chorus microphones were used nor, it turns out, were they needed. Remarkably, this produced a recording that is as close to the Symphony Hall experience as may be possible.

The info is here: www.bostonphil.org/concerts/2021-2022/bpo4-mahler3

Here is the recording in its entirety as a single .WAV file; 44k / 16 bit; 1hr 47 min
Mahler Sym 3 CD.wav  1.1GB  
(For those of you with editing software note that the .wav file HAS markers to denote the movements.)

Here is the exact same Symphony 3 with the movements separated as FLAC files, 48k / 24 bit as a ZIPped file: Mahler 3 Zander as FLAC.zip  1GB

IF you'd like further Gustav Mahler info... https://en.wikipedia.org/wiki/Gustav_Mahler


Shop Talk

Shop Talk was a WBUR program about Hi Fidelity, music, speakers, tape recorders, etc. Enjoyed by many during the 1970s, the program's format was ‘talk’ and interviewing major audio luminaries. It was a forerunner of the popular program Car Talk!

Peter Mitchell and Dr. Richard Goldwater were the original hosts. They were later joined by Brad Meyer. Here, John Allen interviews Scott Kent:

Shop Talk John Allen talks to Scott Kent on SPEAKERS.mp3   (81Mb 1:27)

Shop Talk John Allen talks to Scott Kent on TAPE RECORDERS.mp3  (79Mb  1:26)

There is also an episode track on the BAS CD and here is that Description:

Track 12. "Shop Talk", WHRB-FM, November 5, 1984.
Peter Mitchell (on the left), Richard Goldwater, MD (center) and E. Brad Meyer (right) introduce the show with a 1932 stereo recording and prepare to talk with guests Mark Davis and David Moran, both then of dbx corporation.

Shop Talk, which through most of its ten-year life on WBUR featured just Mitchell and Goldwater, was the precursor of Tom and Ray Magliozzi's "Car Talk". As we finished our 9:00-10:30 stint every Saturday morning, Tom and Ray would take our places and begin joking with each other. Eventually the station manager figured out that they were funnier than we were, and that more people drove cars than owned hi-fi equipment, and fired us. Until then, the show publicized the Boston Audio Society, vastly increasing attendance at our monthly meetings. The show came back for a time during the '80's on the Harvard station WHRB, where we appeared once a month as guests of HRB stalwart David Elliott. [EBM]


BAS MICROPHONE CLINIC REPORT !
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...

...and don't forget, here is the master list of microphones in the world


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 an 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:
www.bostonaudiosociety.org/explanation.htm   
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  T A B  O R  W I N D O W

- AND FOR CONVENIENCE -

AES Future Meetings
www.bostonaes.org

Acoustical Society of America
www.gbcasa.org
SMPTE New England
www.smpte-ne.org

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


The Boston Audio Society
PO BOX 260211
Boston MA 02126


updated 4/14/23