Data Sheet

ManualsBrandsBogen Manualsaudio & home theatreHTA250A

The Bogen HTA Power Amplifier Series are high-

performance units employing Power MOSFET tech-

nology. The unique characteristics of Power MOS-

FET circuitry make them ideally suited to power

amplifier design, providing far superior performance

and reliability compared to other types of transistors.

They offer higher efficiency, reduced heat, simpler

overall design, reduced size and weight.

The HTA125A Model supplies 125 watts and the

HTA250A Model supplies 250 watts (RMS continu-

ous output) at less than 0.5% total harmonic distor-

tion from 20 to 20,000 Hz. An input signal of only

500mV is required for full rated output. The input

impedances are: high-impedance (50k ohms)

unbalanced; low impedance (500/600 ohms,

balanced or unbalanced) with optional accessory

transformer Model TL600. Line bridging can be

achieved with optional transformer Model TL100.

Residual hum and noise is at least 90 dB below

rated output and the output regulation is better than

2 dB from no load to full load.

The amps can drive a variety of load impedances.

Outputs include 4 ohms, 8 ohms, 25VCT and 70

volts. The amplifiers are capable of safely driving

any recommended load continuously. The HTA

Series amps are thermally protected to prevent

damage due to excessively high temperatures.

Additional failure-preventive devices include

overload limiting, short circuit protection, and a Slo-

Blo fuse.

Electronic shutdown circuitry is automatically acti-

vated if an overload or short occurs and the front

panel overload shutdown LED illuminates. Once the

cause has been rectified, the unit automatically

resets. The power ON/OFF switch, located on the

front panel, illuminates when power is on. The rear

panel contains an input level control, input and

output connections, the AC line fuse, and an

auxiliary receptacle. A low-cut filter switch is located

internally.

Power Amplifiers

Models HTA125A

and HTA250A

• Power MOSFET circuitry

• Capable of continuous operation at rated output power

• Frequency response ±1dB, 20 to 20,000 Hz at full rated output

• Distortion less than 0.5% THD, 20 to 20,000 Hz

• Multiple output voltages/impedances available

• Automatic overload protection

• Listed to UL Standard 60065 for US and Canada

Features

Description

Specifications subject to change without notice.

54-7773-06E 1207

Summary of content (2 pages)

PAGE 1
Power Amplifiers Models HTA125A and HTA250A Features • Power MOSFET circuitry • Capable of continuous operation at rated output power • Frequency response ±1dB, 20 to 20,000 Hz at full rated output • Distortion less than 0.5% THD, 20 to 20,000 Hz • Multiple output voltages/impedances available • Automatic overload protection • Listed to UL Standard 60065 for US and Canada Description The Bogen HTA Power Amplifier Series are highperformance units employing Power MOSFET technology.
PAGE 2
Technical Specifications Rated Output Power: Total Harmonic Distortion: Frequency Response: Input Sensitivity: Hum and Noise: Output Loads: Output Regulation: Input Impedances: Low-Cut Filter: Controls & Indicators: Power Requirements: Thermal Emissions (full power): Overload Protection: Auxiliary Receptacle (not switched): Dimensions (without removable feet): Front Panel Dimensions: Finish: Product Weight: Regulatory Approvals: Accessories: HTA125A: 125W; HTA250A: 250W Less than 0.