January 14, 2010
Introduction to CBT Loudspeaker Arrays
Presenters
Don Keele
DBK Associates, DKB Labs
Description
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 guidance.
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 industry.
Date
Thursday January 14, 2009
7:00 PM - Refreshments
7:30 PM - Presentation
Cost
GBCASA meetings are free, and and members are encouraged to invite interested colleagues and friends of the Chapter to attend.
RSVP
None required for this meeting.
Place
Walsh Function Room
Walsh Hall
Boston College
Parking and Directions
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. The general directions to Boston College can be found HERE.
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.
Mass Transportation
The Boston College branch of the MBTA's "Green Line" (B) ends at the Boston-Newton boundary on Commonwealth Avenue. Cross the street and walk by St. Ignatius Church and follow the perimeter road around to campus entrances.
