Product Features:
• 125- and 250-watt models
• Convection-cooled
• Power MOSFET output circuitry
• Thermal protection and automatic
electronic overload protection
• Hi-Z unbalanced and Lo-Z balanced or
unbalanced input w/accessory trans-
former (TL600)
• Internal Low Cut filter switch
• 90 dB signal-to-noise
•
4- and 8-ohm, 25V, 25VCT and 70V outputs
• Input sensitivity: Hi-Z, 500 mV; Lo-Z,
150 mV (HTA125A), 150 mV (HTA250A)
• Power Consumption: 260W (HTA125A);
520W (HTA250A)
• Line bridging (driving multiple amplifiers)
is possible w/ an accessory transformer
(TL100)
• 19" rack-mount design (3 rack space
s)
• Listed to UL Standard 60065
for US and Canada
Technical Specifications, Dimensions,
and Weights can be found on Page 79
Heavy-Duty Operation
The HTA line of amplifiers are designed to
be workhorses. Large heat sinks and huge
transformers allow these amplifiers to sup-
ply continuous, full (RMS) power to loads,
even at high ambient temperatures. The
HTA amplifiers are convection-cooled, so
they provide the ultimate in set-and-
forget operation.
More amazing than the heavy-duty capa-
bility of the HTA amplifiers is the quality of
the output. The frequency response will
remain within +/- 1 dB and have less than
0.5% distortion over the entire audio range
(20 Hz – 20 kHz). What is so special about
this? The output is transformer-coupled.
Few transformer-isolated amplifiers can
even come close to these specifications.
An enormous output transformer using
proprietary coil winding techniques is what
allows the HTA to reach this level of
performance.
A Power MOSFET output stage completes
the extremely reliable and durable per-
formance of these amplifiers. This type of
transistor does not suffer from many of the
failure modes of the more typical transis-
tors (bi-polar types). The result is an
amplifier that can operate reliably at full
power and supply transformer-isolated,
high-quality, full bandwidth (20 Hz –
20 kHz) audio.
HTA125A,
HTA250A
The HTA Series high-performance power amplifiers can safely drive loads continuously
at full (RMS) power. Overload protection includes an electronic shutdown circuit and
a thermal breaker.
Accessories
TL600
600-ohm
Impedance-Matching
Transformer
TL100
1:1 Bridging
Transformer
WMT1A
Matching
Transformer
www.bogen.com
46
AMPLIFIERS
MONO-CHANNEL POWER AMPLIFIERS
MONO-CHANNEL POWER AMPLIFIER
BPA60
Product Features:
• 60 watts
• 1 input: Hi-Z unbalanced
• Lo-Z balanced input with accessory
transformer
• Input level control and
Low Cut filter switch
• 8-ohm/25V, 16-ohm, 25VCT, and
70V outputs
• Sensitivity: 300mV, Hi-Z; 75mV, Lo-Z
• Resettable circuit breaker and thermal
protection
• Operates with 25V and 70V systems
• 120V AC, 60 Hz, 180W @ full rated
output
• Rack-mountable with accessory
mounting kit: RPK53 (2 rack spaces)
• Listed to UL Standard 60065
for US and Canada
Accessories
The BPA60 supplies 60 watts of power amplification for professional
and commercial sound systems requiring continuous high-quality sound.
TL600
600-ohm
Impedance-Matching
Transformer
TL100
1:1 Bridging
Transformer
RPK53
Rack
Panel Kit
Technical Specifications, Dimensions,
and Weights can be found on Page 79
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