OWNER'S MANUAL
Specifications are subject to change without notice
www.AtlasSound.com
1601 JACK MCKAY BOULEVARD ENNIS, TEXAS 75119 U.S.A. • TELEPHONE: (800) 876-3333 • FAX: (800) 765-3435
© 2008 ATLAS SOUND LP
Printed in U.S.A.
ATS003064 RevA 3/08
8
AA-GPN1200
4.
Gain Control
– A gain control has been incorporated to adjust the level of the
signal. Clockwise increases the signal. Note: When the gain is turn fully counter
clockwise there will still be some signal present at the output.
5.
EQ
– This potentiometer allows one to adjust the noise parameter to meet a
basic masking spectrum. This Hi-Cut filter adjusts from 7 kHz to 1 kHz at 6 db
per octave. Note: If more equalization is necessary we suggest using an Atlas
EQM131, a 31 band graphic equalizer, after the AA-GPN1200 balanced output.
Note: For the EQ range control pot to be in effect, the EQ filter switch #6 must be
in the POST EQ position. See the illustration showing the frequency curves to get a
complete understanding of the EQ range.
6.
Pre EQ & Post EQ
– this slide switch allows one to select between Pre EQ and
Post EQ. POST EQ, the internal Hi-Cut filter is engaged limiting the frequency
bandwidth. In PRE EQ the internal EQ is bypassed allowing the full noise spectrum
at the output. See illustration on the next page.
7.
Balanced Output
– This removable Phoenix style connector is a electronic
balanced output. If an unbalanced signal is needed connect the (G) and the (-)
terminals together.
Suggested optional accessory EQM131
- For most sound masking systems the EQ
on the AA-GPN1200 is adequate. For systems requiring more fine tuning of equalization
we suggest using Atlas Sound EQM131.
