Bogen HTA125A Installation & Use Manual Download Page 2

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

NOTICE:

Every effort was made to ensure that the information in this guide was complete

and accurate at the time of printing. However, information is subject to change.

WARNING: 

To reduce the risk of Fire or Electric Shock, Do Not Expose this apparatus

to rain or moisture.

Apparatus shall not be exposed to dripping or splashing and no objects filled with liquids,
such as vases shall be placed on the apparatus.

WARNING: 

Only connect unit to AC mains outlet providing protective earthing connection.

NOTE:

Mains plug is used as disconnect device from the mains and shall remain readily

accessible and operable.

CAUTION: 

These servicing instructions are for use by qualified service personnel only. To reduce the

risk of electric shock, do not perform any servicing other than that contained in the operating

instructions unless you are qualified to do so.

CAUTION: DO NOT INSTALL OR PLACE THIS UNIT IN A BOOKCASE, BUILT-IN CABINET, OR IN
ANOTHER CONFINED SPACE. ENSURE THE UNIT IS WELL VENTILATED. TO PREVENT THE RISK 
OF SHOCK OR FIRE HAZARD DUE TO OVERHEATING, ENSURE THAT CURTAINS AND ANY OTHER
MATERIALS DO NOT OBSTRUCT THE VENTILATION VENTS.

Always follow these basic safety precautions when installing and using the unit:

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean unit with dry cloth. 
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus

(including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two

blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong.

The wide blade, or the third prong, are provided for your safety. If the provided plug does not fit into your

outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles,

and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.
12. Unplug this apparatus during lightning storms or when not used for long periods of time.

13. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been

damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects

have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.

CAUTION: TO PREVENT THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE ANY FRONT/BACK COVERS
OR PANELS. NO USER-SERVICEABLE PARTS INSIDE. 
REFER SERVICING TO QUALIFIED PERSONNEL.

The exclamation point within an equilateral triangle is in-
tended to alert the user to the presence of important
operating and maintenance (servicing) instructions.

The lightning flash with arrowhead symbol, within an equi-
lateral triangle, is intended to alert the user to the presence of
uninsulated "dangerous voltage" within the product's enclo-
sure that may be of sufficient magnitude to constitute a risk
of electric shock to persons.

Summary of Contents for HTA125A

Page 1: ...Specifications subject to change without notice 2010 Bogen Communications Inc All rights reserved 54 5832 04B 1011 HTA125A 250A Power Amplifiers Installation Use Manual ...

Page 2: ...not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If ...

Page 3: ... to Chassis 2 120V AC Outlet Not Switched 3 AC Line Fuses 4 Output Connections 5 Balanced Input Accessory Transformer Required 6 Unbalanced Input 7 Input Level Adjustment 1 Overload Shut Down Indicator 2 ON OFF Power Switch 1 2 4 5 6 7 1 2 2 3 4 5 6 7 3 FRONT PANEL REAR PANELS 1 ...

Page 4: ...nections AC Line Fuse and an Auxiliary Re ceptacle A Low Cut Filter switch is located internally on the printed circuit board Rack Mounted Installation The amplifier is designed for installation in a standard 19 equip ment rack Position the unit in the rack and secure with screws through the amplifier front panel NOTE Before placing the amplifier in a rack install any accessory transformers requir...

Page 5: ...s a 25V or 70V speaker output Connect the output of the driver amplifier to the HI Z INPUT jacks via a resistor network The resistors shown in Fig 1 are in addition to the normal loudspeaker load on the output of the driver amplifier Input Connections Fig 1 Input From Another Amplifier AT 70V R1 10K 1 2W AT 25V R1 3 3K 1 2W 70V R1 R2 100 1 2W GND OUTPUT TERMINAL STRIP OF DRIVER AMPLIFIER TO HIGH I...

Page 6: ... to the amplifier Turn the adjustable screw clock wise to increase the level Warning Many loudspeakers may be damaged if overdriven Therefore always begin system setup with the input level control fully counterclockwise and gradually increase the setting to ob tain the desired output level Overload Shutdown Indicator Electronic shutdown circuitry activates whenever an overload or short occurs on t...

Page 7: ...ut level control Slo Blo fuse Internal Low Cut filter switch Power Requirements HTA125A 120V 60 Hz 3 1A 260 watts Full Rated Output Idle 45W HTA250A 120V 60 Hz 5 5A 520 watts Full Rated Output Idle 60W Thermal Emissions full power HTA125A 426 9 BTU hr HTA250A 939 2 BTU hr Overload Protection Electronic overload protection Electrical HTA125A 4A Slo Blo Fuse HTA250A 7A Slo Blo Fuse Thermal Thermosta...

Page 8: ...ESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED TO THE MAXIMUM EXTENT ALLOWABLE BY LAW Bogen s liability arising out of the manufacture sale or supplying of products or their use or disposition whether based upon warranty contract tort or otherwise shall be limited to the price of the product IN NO EVENT SHALL BOGEN BE LIABLE FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDIN...

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