User Manual

AtlasSound.com – 8 –
Specifications are subject to change without notice.
Owner’s Manual
AM1200
Sound Masking System
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
5. External Speaker Level Control – A level control has been incorporated to adjust
the level of the external 70.7V amplifier output. Clockwise increases the signal. The
Internal and External Level Controls are independent of each other. Note: When the
gain is turned fully counterclockwise there will still be some signal present at the
output.
6. Hi-Cut EQ – This potentiometer allows one to adjust the noise parameter to meet
a basic masking spectrum. This Hi-Cut filter adjusts from 1 kHz to 7 kHz at 6 db
per octave. See the illustration showing the frequency curves to get a complete
understanding of the EQ range.
7. External Amplifier 70.7V Output – This 12 W 70.7V amplifier output is to power
additional masking speakers. It is suggested to use the Atlas Sound M2000 speakers.
This amplifier output has its own level control but utilizes the same signal as the
internal speakers.
8. Power Cord Strain Relief support – To secure power cord to chassis place a cable
tie through the slot and around the cord.
9. Internal Speakers – The AM1200 has two internal speakers, to adjust the speaker
level use the internal speaker level control.
10. Mounting Holes – There are four mounting holes to secure the AM1200 to a wall
or ceiling.
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