Author: jeffseitz

MEETING ANNOUNCEMENT

“An Overview of Audio System Grounding and Interfacing”
presented by Bill Whitlock

When: 7:00-10:00pm, September 4, 2012 — Doors open at 7pm

Where:
J.W. Marriott Hotel — Grand Ballroom 7-8
10 S. West Street, Indianapolis, IN 46204 (primary address) (map).

The meeting will be held in the hotel’s Grand Ballroom.  Refreshments will be provided.  Paid parking is available onsite or across the street at the Indiana State Museum.

MEETING CONTENT:

The Central Indiana AES is pleased to welcome Bill Whitlock to Indianapolis for an in depth discussion regarding audio syatem grounding and interfacing.  Bill will share his knowledge and experience, revealing the true causes of system noise and ground loops. Unbalanced interfaces are exquisitely vulnerable to noise due to an intrinsic problem . Although balanced interfaces are theoretically noise-free, they’re widely misunderstood by equipment designers, which often results in inadequate noise rejection in real-world systems. Because of a widespread design error, some equipment has a built-in noise problem . Simple, no-test-equipment, troubleshooting methods can pinpoint the location and cause of system noise. Ground isolators in the signal path solve the fundamental noise coupling problems. Also discussed are unbalanced to balanced connections, RF interference, and power line treatments. Bill will also point out some widely used “cures” that are both illegal and deadly.

Bill Whitlock has designed analog electronics since 1972, serving as chief electronics engineer for Quad-Eight, Laserium®, and Capitol Records prior to joining Jensen Transformers in 1989 after Deane Jensen’s untimely death. His writings have been published in the AES Journal, Glen Ballou’s “Handbook for Sound Engineers,” Doug Self’s “Audio Engineering Explained,” nearly all Jensen white papers, and numerous magazine articles. Bill is also active in standards work for AES, UL, IEC, and CEA.

His four patents include the InGenius® balanced line receiver IC and the ExactPower® high-speed, waveform-correcting AC voltage regulator. He’s a Life Fellow of the AES and a Life Senior Member of the IEEE.

Please RSVP if you intend on coming and feel free to bring non-AES members, all are welcome.  We look forward to seeing you there. Attendance is free but seating is limited to 150, so please RSVP

RSVP

All are welcome to meet for dinner/drinks prior to the formal meeting and tour with the new Central Indiana AES officers at 5:30 at the downtown California Pizza Kitchen (49 W. Maryland St.). Dinner is not complimentary and there will not be snacks available during the 7:00 meeting. Please plan accordingly.

Should be an awesome event. We look forward to seeing new and old AES faces alike!

Circle Theatre Entry Instructions: Please do not try to to enter the theatre at the main entrance, off the circle at 45 Monument Circle. These doors will be locked and there will not be anyone present to open them.

The backstage entrance within the Symphony Center will be open for event attendees at 32 E. Washington Street. There is a security desk just inside this entrance where you can let the receptionist know you are part of the AES tour group. Please congregate in the musician’s lounge prior to the 7PM meeting and tour.

Parking Instructions: There is metered street parking and there is a pay parking lot across the street from Symphony Center. The backstage entrance is at 32 E. Washington Street. There are also parking garages on both sides of Pennsylvania Avenue, between Market Street and Washington Street. The Circle Center Mall parking lot on Washington Street will also be available and is walking distance from the entrance.

Express Park is the nearest parking garage to the Symphony Center entrance. It adjoins the alley next to the theatre. From the garage, walking south down the alley to Washington Street and then west about 20 paces will put you at the Symphony Center door.

To ensure an accurate count for the meeting, please RSVP

Meeting Information
Date: August 21, 2012

Dinner Time: 5:30pm.
Dinner Location: California Pizza Kitchen (Downtown Circle Center)
49 W. Maryland St. Indianapolis, IN 46204 (map).

Tour Time: 7:00pm.
Tour Location: Hilbert Circle Theatre Musician Entrance
32 E. Washington Street, Indianapolis, IN 46204 (primary address) (map).