The Boston Sections of the Audio Engineering Society,
Boston Audio Society and the Acoustic Society of America
Introduction to CBT Loudspeaker Arrays
By Don Keele
Thursday Jan. 14th, 7pm
Walsh Function Room *
Don will discuss the background and history of Constant Beamwidth
Transducer (CBT) arrays and will describe and discuss the measurement
and simulation results of several CBT line array prototypes that were
constructed for home applications. He will offer suggestions for
possible CBT-based DIY home construction projects and provide general
Don Keele has worked for several companies in the area of loudspeaker
R&D and measurement technology including Electro-Voice,
Klipsch, JBL, Crown, and Harman. He holds three patents on
"constant-directivity" loudspeaker horns, has four patents pending, and
is a fellow of AES and a member of ASA. Mr. Keele is a past member of
the AES Board of Governors and is past Vice President, Central Region
USA/Canada of the AES.
Mr. Keele received the TEF Richard C. Heyser Award in 2001. In 2002, he
received a Scientific and Engineering Academy Award from the Academy of
Motion Picture Arts and Sciences for work he did on cinema
constant-directivity loudspeakers. Currently he is semi-retired and
heads his own consulting company DBK Associates and Labs. His passion
for the last ten years has been to promote the use of CBT (Constant
Beamwidth Transducer) loudspeaker technology in the loudspeaker
* Note room change from recent AES Meetings and also that the event is on a Thursday*.
Parking is available in the Commonwealth Ave Parking garage for a small
price or free on Commonwealth Ave. The entrance to the Walsh
Function Room is on the right before the main entrance to Walsh Hall.
Look for the AES Banner in the window. I've added an arrow pointing to
the entrance on THIS map.
FROM POINTS NORTH AND SOUTH: Take Interstate 95 (Route 128) to Exit 24
(Route 30). Proceed east on Route 30, also known as Commonwealth
Avenue, and follow for about five miles to Boston College.
FROM POINTS WEST: Take the Massachusetts Turnpike (Route 90) to Exit
17. At the first set of lights after the exit ramp, take a right onto
Centre Street. Follow Centre Street to the fourth set of lights, and
turn left onto Commonwealth Avenue. Follow Commonwealth Avenue 1-1/2
miles to Boston College.
FROM DOWNTOWN BOSTON: Take the Massachusetts Turnpike (Route 90) to
Exit 17. Take a left over the bridge after passing the Sheraton Tara
Hotel. Take the first right onto Centre Street. Follow above directions
from Centre Street.
PUBLIC TRANSPORTATION: The Boston College branch of the MBTA's "Green
Line" (B) ends at the Boston-Newton boundary on Commonwealth Avenue.