Gai-tronics 751-905 DATASHEET
PUB. DS751-905
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
Model 751-905
SmartSeries Speaker Amplifier
General Information
This data sheet applies to the Model 751-905 SmartSeries Speaker Amplifier, which is designed to
provide an intelligent speaker amplifier for use on a multi-party system cable in a standard GAI-Tronics
Page/Party
The Model 751-905 serves as an amplifier to broadcast page announcements over the station’s speaker. It
also serves as a control interface to optional devices such as the party line End-of-Line Module or the
SmartSeries station Remote Terminal Unit when installed into a SmartSeries RTU enclosure.
The GAI-Tronics nameplate on the front panel conceals an internal user level adjustment control. The
Model 751-905 can also:
• Supervise the local speaker • Transfer data messages on the system cable
®
or ADVANCE system.
• Measure the ambient noise and adjust the speaker
output level accordingly
Figure 1. Front and Side View
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
V
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Pub. DS751-905
ODEL 751-905 SmartSeries Speaker Amplifier PAGE 2 of 2
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Specifications
Electrical
Supply voltage ....................................................................... 90 to 140 V ac (120 V ac nominal), 50/60 Hz
Power consumed @ nominal ac........... Zero/maximum signal (12 watts): 15 VA, 9 watts/59 VA, 32 watts
Speaker Amplifier
Output ............................................................................... 12 watts minimum, with nominal supply voltage
Frequency response....................................................................... 350 to 6,500 Hz, +0/−3 dB, ref. to 1 kHz
Distortion ......................................................................................... 1% maximum THD @ 1 kHz, 12 watts
SmartVolume™
Monitor range (low gain) ................................................................................................... 62 to 100 dB SPL
Offset (above ambient) User Level Adjustment ........................................................................... 0 to 48 dB
Minimum User Level Adjustment ............................................................................. Off; 85 to 125 dB SPL
Mechanical
Dimensions ............................................. 8.12 H × 8.12 W × 3.12 D inches (206 × 206 × 78.7 mm) overall
Environmental
Temperature range ......................................... −22° F to +158° F (−30° C to +70° C) operating and storage
Humidity ..................................................................................................................... 95%, non-condensing
Approvals
Model 751-905 Amplifier .............................................................................................II 3G EEx nA IIC T4
Location Zone 2
IP 66 when installed in a Model 702-006, 703-006,
703-007, 7325-106, or 7325-107 Enclosure
NRTL listed ..............................Suitable for use in hazardous locations Class I, Div. 2, Groups A, B, C, D;
Class II, Div. 2, Groups F, G;
Class III, Div. 2
when used with listed 702-006, 703-006, 703-007
7325-106, or 7325-107 Enclosure
CE Mark
Certificate No. DEMKO 04 ATEX 0424225X
Notified Body Id No. 0539
UL International DEMKO A/S
Lyskear 8
DK-2730 Herlev
Denmark
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