SEMINARS by VARIOUS EXHIBITORS
ROOM A (3D05)
Version F, 2003-09-28

Friday, October 10

1:00 pm – 2:00 pm ROOM 3D05
JBL
HIGH OUTPUT AND PATTERN CONTROL IN LOUDSPEAKERS FOR LARGE-SCALE DISTRIBUTED SYSTEMS - THE JBL PD SERIES
Presenters:
Rick Kamlet, JBL Professional
Ted Leamy, JBL Professional
Brad Ricks, Harman Professional Systems
Abstract:
This seminar explores new developments in loudspeakers for large-scale distributed systems. Recent systems will be profiled, including Soldier's Field and Walt Disney Concert Hall. The new PD5000 series of high-output loudspeakers -- downscaled versions of PD700 speaker utilized in many of today's largest facility systems -- will be introduced. Issues regarding which types of loudspeakers to use in which application and locations will be discussed. This seminar will benefit contractors and audio consultants involved in the design of systems for sports facilities, performing arts centers, live theaters, auditoriums, houses of worship and dance clubs.

2:00 pm – 3:00 pm ROOM 3D05
D. W. Fearn
VACUUM TUBES IN THE TWENTY-FIRST CENTURY
Presenter:
Douglas Fearn, D.W. Fearn & Associates
Abstract:
Do vacuum tubes have a place in modern recording, one hundred years after
their invention? The answer is yes, particularly in microphone
preamplifiers. Despite many perceived deficiencies compared to solid-state
devices, tube mic preamps often provide superior subjective performance.
The most significant factor is the higher proportion of even-order
distortion products, particularly the second harmonic in triode-based designs.

4:00 pm – 5:00 pm ROOM 3D05
Digigram
NETWORKING WITHOUT LATENCY- TODAY'S REALITY
Presenter:
James Lamb, Digigram Inc.
Abstract:
This seminar will deal with the timely subject of the advantages of networks in today's real-world, distributed audio applications.

5:00 pm – 6:00 pm ROOM 3D05
Earthworks
IT'S ABOUT TIME, EARTHWORKS' MODEL OF HUMAN HEARING
Presenter:
Eric Blackmer, Earthworks
Abstract:
This presentation will attempt to explain the thinking of David Blackmer, Earthworks' founder, on the subject of how humans hear. Among his lifelong goals was to learn the nature and the degree of precision required such that the tools of Audio might accurately capture and reproduce the sonic experience of being there. To this end he looked very closely at the mechanisms involved in human hearing and sought to understand them. Through this understanding he developed a new model which seems to more closely represent the actual capabilities of the human auditory sense. His Time Coherent Model of Human Hearing is the basis for Earthworks product line and, we believe, the basis for a new standard of accuracy in audio system design. Please consider this model as it may provide a useful framework for achieving that which has always been assumed to be impossible- perceptual perfection in Audio.