Hubbell Musical Instrument Amplifier 723 001 User Manual

Pub. 42004-145C  
G AI - TRO NI CS® CO RPO RATI O N  
A
H U B B E L L C O M P A N Y  
Model 723-001 Remote  
Handset/Speaker Amplifier  
Confidentiality Notice  
This manual is provided solely as an operational, installation, and maintenance guide and contains sensitive  
business and technical information that is confidential and proprietary to GAI-Tronics. GAI-Tronics retains  
all intellectual property and other rights in or to the information contained herein, and such information may  
only be used in connection with the operation of your GAI-Tronics product or system. This manual may not  
be disclosed in any form, in whole or in part, directly or indirectly, to any third party.  
General Information  
The Model 723-001 Remote Handset/Speaker Amplifier is an important component of the Page/Party®  
communications system and an integral part of GAI-Tronics desktop, desk-edge, and flush-mount stations.  
It has been designed to be remotely mounted within an enclosure, allowing the associated subsets to be  
placed on a desktop, mounted on the side of a desk, or to be flush mounted. The Model 723-001 Remote  
Handset/Speaker Amplifier is constructed of fabricated steel durable enough for even the toughest  
industrial environments.  
Installation  
WARNING  
Explosion Hazard – Substitution of components may impair suitability for  
Class 1, Div. 2 usage.  
CAUTION  
Do not install this equipment in hazardous areas or areas other than those indicated on the equipment  
approval list in the Specifications section of this manual. Such installation may cause a safety hazard  
and consequent injury or property damage.  
To install the remote handset/speaker amplifier, plug the amplifier into the appropriate enclosure and  
tighten the four screws in the corners of the amplifier. See Figure 1 for the typical installation details.  
GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA  
610-777-1374 800-492-1212 Fax: 610-796-5954  
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS  
 
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Model 723-001 Remote Handset/Speaker Amplifier  
Operation  
GAI-Tronics offers two types of Page/Party® systems: Single party with one page line and one party line,  
and multi-party with one page line and five party lines allowing up to five simultaneous two-way  
conversations.  
For single party, complete the following steps to make a page announcement:  
1. Lift the handset from the cradle.  
2. Depress and hold the handset pressbar.  
3. Speak directly into the microphone to broadcast your announcement over the loudspeakers.  
4. Release the handset pressbar, and if requested, wait for a response.  
The paged individual(s) responds by picking up a station handset.  
For multi-party, complete the following steps to make a page announcement:  
1. Lift the handset from the cradle.  
2. If party line conversation is desired, rotate the selector switch to an unoccupied party line.  
3. Depress and hold the handset pressbar.  
4. Speak directly into the microphone to broadcast your announcement over the loudspeakers.  
5. Release the handset pressbar, and if requested, wait for a response.  
The paged individual(s) responds by picking up a station handset and turning the selector switch to the  
requested party line.  
With either type of equipment, the full duplex party line communication is not broadcast over the system  
speakers. Other individuals can also pick up and join the conversation at any time. Always return the  
handset to the cradle following a page or a party line conversation.  
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Model 723-001 Remote Handset/Speaker Amplifier  
Maintenance  
The following adjustments are accessible through the rear chassis of the remote amplifier using a small  
standard screwdriver. Each adjustment is clearly labeled:  
Microphone Gain: adjusts the gain level from the microphone signal to the page or party lines.  
Receiver Sidetone: adjusts the signal transmitted from the microphone to the receiver of a handset.  
Receiver Volume: adjusts the gain level from a party line to the receiver.  
Troubleshooting  
The following table lists some hints to aid technicians in troubleshooting:  
Problem  
Solution  
Feedback/distortion (a hum or  
buzz on the line) occurs during all  
Page/Party® station operation.  
The line may be improperly terminated. Inspect the system cable  
for loose connections, shorts, and grounds. Line balance assembly  
connections are critical.  
Associated speaker level requires  
adjustment.  
1. Adjust the speaker volume control located on the front panel of  
the subset, if equipped. Refer to Figure 1.  
2. Adjust the speaker volume control at the amplifier. Use a small  
standard screwdriver to perform these adjustments. Refer to  
Figure 1.  
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Model 723-001 Remote Handset/Speaker Amplifier  
Specifications  
Power input ..................................................................... 90-140 V ac range, 50/60 Hz, 120 V ac nominal  
Power consumed............................................................................................Zero signal: 10.5 VA, 5.3 W  
Maximum signal: 58 VA, 29.5 W  
Construction/Finish.................................................... 16-gauge cold-rolled steel/gray polyurethane enamel  
Handset Amplifier  
Output level....................................................................................1.5 VRMS nominal into 33-ohm load  
Output limiter.......................................................................................................... 1.5 VRMS nominal  
Gain................................................. 55 dB nominal (below limiter level); adjustable from 40 to 63 dB  
Frequency response .............................................. 250-4,000 Hz, +0/-3 dB ref. to 1 kHz (below AGC)  
Distortion...................................................................................... 1.5% maximum THD @ 1,000 Hz  
Controls ......................................................................Microphone gain, receiver volume, and sidetone  
(adjusted through the access holes on rear surface of unit)  
Speaker Amplifier  
Output................................................. Push-pull, Class B, 12 watts min., with nominal supply voltage  
Amplifier sensitivity ...................................................................................... 0.5 V ac, at rated output  
Frequency response ................................................................... 250-4,000 Hz, +0/-3 dB ref. to 1 kHz  
Distortion.................................................................................. 1% max. THD @ 1,000 Hz, 12 watts  
Input impedance ................................................................................................ 50,000 ohms nominal  
Controls ................................................................... Speaker volume (adjusted through the access hole  
behind nameplate on the front panel)  
Temperature range............................................................................. -22º F to +158º F (-30º C to +70º C)  
Dimensions.............................................. 8.1 H × 8.1 W × 3 D inches (206 × 206 × 76 mm) behind panel/  
3.5 D inches (89 mm) in front of panel  
Shipping weight.................................................................................................................5.6 lbs. (2.6 kg)  
Approval ..........NRTL certified for use in US and Canada ................... Class I, Div. 2, Groups A, B, C, D,  
when mounted into a certified GAI-Tronics Model 7245 Amplifier Enclosure  
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Model 723-001 Remote Handset/Speaker Amplifier  
Replacement Parts  
Part Number  
Description  
Maintenance Cable, 24-pin  
10440-003  
46101-012  
12530-001  
12523-001  
12601-001  
46101-012  
12604-001  
12604-002  
21006-001  
25210-005  
69723-201  
Screw Kit  
Transformer, Connector Subassembly Kit  
GTC Nameplate Kit  
PCBA Standoffs (10 pack)  
Hardware Kit  
Fuse, Slow-blow 0.7 A (10 pack)  
Fuse, Slow-blow 1/16 A (10 pack)  
Male Connector  
Cell Gasket  
Replacement PCBA  
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Warranty  
Equipment. GAI-Tronics warrants for a period of one (1) year from the date of shipment, that any  
GAI-Tronics equipment supplied hereunder shall be free of defects in material and workmanship, shall  
comply with the then-current product specifications and product literature, and if applicable, shall be fit  
for the purpose specified in the agreed-upon quotation or proposal document. If (a) Seller’s goods prove  
to be defective in workmanship and/or material under normal and proper usage, or unfit for the purpose  
specified and agreed upon, and (b) Buyer’s claim is made within the warranty period set forth above,  
Buyer may return such goods to GAI-Tronics’ nearest depot repair facility, freight prepaid, at which time  
they will be repaired or replaced, at Seller’s option, without charge to Buyer. Repair or replacement shall  
be Buyer’s sole and exclusive remedy. The warranty period on any repaired or replacement equipment  
shall be the greater of the ninety (90) day repair warranty or one (1) year from the date the original  
equipment was shipped. In no event shall GAI-Tronics warranty obligations with respect to equipment  
exceed 100% of the total cost of the equipment supplied hereunder. Buyer may also be entitled to the  
manufacturer’s warranty on any third-party goods supplied by GAI-Tronics hereunder. The applicability  
of any such third-party warranty will be determined by GAI-Tronics.  
Services. Any services GAI-Tronics provides hereunder, whether directly or through subcontractors,  
shall be performed in accordance with the standard of care with which such services are normally  
provided in the industry. If the services fail to meet the applicable industry standard, GAI-Tronics will  
re-perform such services at no cost to buyer to correct said deficiency to Company's satisfaction provided  
any and all issues are identified prior to the demobilization of the Contractor’s personnel from the work  
site. Re-performance of services shall be Buyer’s sole and exclusive remedy, and in no event shall GAI-  
Tronics warranty obligations with respect to services exceed 100% of the total cost of the services  
provided hereunder.  
Warranty Periods. Every claim by Buyer alleging a defect in the goods and/or services provided  
hereunder shall be deemed waived unless such claim is made in writing within the applicable warranty  
periods as set forth above. Provided, however, that if the defect complained of is latent and not  
discoverable within the above warranty periods, every claim arising on account of such latent defect shall  
be deemed waived unless it is made in writing within a reasonable time after such latent defect is or  
should have been discovered by Buyer.  
Limitations / Exclusions. The warranties herein shall not apply to, and GAI-Tronics shall not be  
responsible for, any damage to the goods or failure of the services supplied hereunder, to the extent  
caused by Buyer’s neglect, failure to follow operational and maintenance procedures provided with the  
equipment, or the use of technicians not specifically authorized by GAI-Tronics to maintain or service the  
equipment. THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE IN LIEU OF AND  
EXCLUDE ALL OTHER WARRANTIES AND REMEDIES, WHETHER EXPRESS OR IMPLIED BY  
OPERATION OF LAW OR OTHERWISE, INCLUDING ANY WARRANTIES OF  
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
Return Policy  
If the equipment requires service, contact your Regional Service Center for a return authorization number  
(RA#). Equipment should be shipped prepaid to GAI-Tronics with a return authorization number and a  
purchase order number. If the equipment is under warranty, repairs or a replacement will be made in  
accordance with the warranty policy set forth above. Please include a written explanation of all defects to  
assist our technicians in their troubleshooting efforts.  
Call 800-492-1212 (inside the USA) or 610-777-1374 (outside the USA) for help identifying the  
Regional Service Center closest to you.  
(Rev. 10/06)  
 

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