February 2022 Meeting Notice: Merlijn Van Veen – AES75 – AES standard for loudspeaker measurement

2022/01/202022/02/04Paolo Menolotto

The next online meeting of the AES Melbourne Section will be on Monday 14^th February 2022 at 7:30pm AEDT (UTC+11).

Merlijn Van Veen, Chair of the AES Standards Task Group SC-04-03-A and Senior Technical Support & Education Specialist at Meyer Sound will present on the topic of:

AES75: AES standard for acoustics
Measuring loudspeaker maximum linear sound levels using noise

Merlijn will briefly explore the background and impetus for this project. The AES Standards procedure will be explained and demonstrated, including challenges faced by the SC-04-03-A Task Group and how the Group’s activities have inspired development within other standard bodies. The session will close with a description of the remaining development steps.

Seasons Greetings

2021/12/222021/12/22Secretary

Meeting Report: December 2021 – Loudspeaker Power Ratings – Michail Barabasz

2021/12/192021/12/22Paolo Menolotto

On Monday December 13^th the AES Melbourne Section mounted yet another Zoom online meeting.

Over thirty members and guests joined the meeting to hear Michail Barabasz of Lorantz Audio Services present on the topic of Loudspeaker Power Ratings

After welcoming everyone, Section Chair Graeme Huon introduced Michail who started his presentation with a brief history of his career at Plessey Rola (pre-1975), including and his involvement with the 1977 Australian Standard for Sound System Equipment (AS1127, Part 5 – Loudspeakers), before establishing Lorantz Audio Services in 1976.

December 2021 Meeting Notice: Michail Barabasz – Loudspeaker Power Ratings

2021/11/222021/11/22Secretary

Meeting Notice

The next online meeting of the AES Melbourne Section will be on Monday 13^th December 2021 at 7:30pm.

Michail Barabasz, of loudspeaker maker Lorantz Audio will present on the topic of:

Loudspeaker Power Ratings

…and other myths.

Modern class D amplifiers are capable of kilowatts of drive and care little for the load impedance. Can loudspeaker voice coils and suspensions handle this?
Dedicated amplifier/loudspeaker combinations in active boxes can have sophisticated protection programming.
How effective can this be?
How should the standards for loudspeaker testing and power ratings tackle this?

AES75: AES standard for acoustics Measuring loudspeaker maximum linear sound levels using noise

Meeting Notice

Loudspeaker Power Ratings

…and other myths.

AES75: AES standard for acoustics
Measuring loudspeaker maximum linear sound levels using noise