AGM 2012

The Annual General Meeting of the Melbourne Section of the AES will be held on Monday August 13th 2012 at 7:30pm at Swinburne University Lecture Theatre EN102 (directions below)

The Agenda can be viewed or downloaded here.

If you are a voting member (Member Grade or higher) please check the Agenda, and take particular note of the vote on the proposed changes to our Association Rules. Further details can be found here.

Nominations for any position on the Committee can be made on the form available for viewing or download here.

Nominations can be made prior to the meeting or from the floor of the meeting.

The short AGM will be followed by a presentation by David J Murphy of Krix Loudspeakers on the subject:

Design Techniques for Loudspeaker Systems

The presentation is a summary of the process used to develop a commercially successful range of loudspeaker systems for cinema screen applications. The choice of crossover frequencies is determined by factors such as matching the directivity of the individual components, the power rating of components, and selecting for low distortion. Examples of typical performance characteristics are given. The principles are broadly applicable to all loudspeaker design.

A range of 2-way, 3-way, and 4-way loudspeaker systems for behind the screen has been designed and developed inAustralia. High quality stereo recordings have been used to fine tune their sound quality on voice, and selected movies used to confirm that quality in 5.1 format. The mid, high, and ultra-high frequency horn loaded components have been specially designed to match beam angles with low frequency enclosures at the usual crossover frequencies, and with each other in 3-way and 4-way systems. This ensures a very smooth and consistent Directivity Index (DI) through the audio spectrum. A flexible suite of active and passive crossovers has been developed.

Monday 13th August 2012 at 7:30pm
Lecture Theatre EN102
(turn right as you enter)
Ground Floor
Engineering Building
Swinburne University of Technology
John St

If you are not familiar with the Swinburne Hawthorn campus information and a campus map can be found at