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120A
Servo-Balanced Distribution Amp
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The
Model 120 is a high performance audio distribution amplifier
with a single high impedance input and four low impedance
outputs, all electronically servo-balanced. The 120's transformerless
circuits are designed for wide, flat frequency response free
from ringing or overshoot, making it ideal for distribution
of SMPTE time code as well as audio. Each output has its own
amplifier and level control for maximum versatility and isolation.
The sturdy steel chassis may be used stand-alone or rackmounted,
singly or in pairs. |
| Features |
Applications |
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• Servo-Balanced input and outputs |
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Radio and TV broadcasting |
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Individual output level controls |
•
Press feeds |
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Wide bandwidth and dynamic range |
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Sound Reinforcement |
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Compact 1/2 rack steel package |
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Dubbing facilities |
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Cost Effective |
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Tape duplication facilities |
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Sonically transparent |
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Recording studios |
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+25dBm output level into 600 Ohms |
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Telephone line driver |
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Short-circuit proof |
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Mobile Radio and TV units |
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Fully RF protected |
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Post production facilities |
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Recessed output level controls |
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| Performance |
| The
120 was designed to be as transparent as possible. This means
wide, flat frequency response, excellent transient reproduction
and a dynamic range surpassing digital. This allows the 120
to be used in the most critical applications, as well as distributing
SMPTE time code if necessary. Compact, rugged package provides
maximum shielding and is equally at home on the ground in a
location shoot or mounted in a studio's rack. |
| Input |
| The
input circuit is a true instrumentation type, adjusted for good
common-mode rejection. Servo-balancing compensates for high
common-mode voltages, so headroom isn't sacrificed. The high
input impedance allows bridging of the input signal with minimum
loading. This way several amplifiers can be easily driven from
the source. The input circuit is fully RF protected. |
| Outputs |
| The
individual output amplifiers are very low impedance so long
lines and capacitive loads are easily driven with no loss of
stability or high frequency response. Servo-balancing permits
the outputs to be used single-ended at any time without a change
in gain by simply grounding the unused pin. Individual output
level controls are recessed for bump-proof operation, yet can
be easily adjusted without tools. Each output is RF protected
and fully short-circuit proof with a front panel clip indicator. |
| Applications |
| The
120 will find use in a wide variety of applications, including
TV and radio broadcast, production and post production, recording
studios, tape duplication and dubbing stages anywhere a high
quality, reliable signal distribution system is required. |
| SPECIFICATIONS
- Aphex Model 120A Servo-Balanced Distribution Amp |
| Audio |
| Frequency
Response |
5Hz
- 100 kHz (+0, -0.5dB) |
| Dynamic
Range |
94
dB |
| Hum
and Noise |
Better
than -90 dBm at unity gain |
| THD |
0.002%
@ +4dBm, 0.005% @ +20dBm |
| IMD |
0.002%
@ +10dBm |
| Channel
Isolation |
>
70dB |
| Slew
Rate |
13
V/usec |
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Input |
| Connector |
XLR
3-pin Female |
| Type |
Transformerless,
differential servo balanced |
| Impedance |
100k
ohms balanced |
| Maximum
Level |
+25
dBm |
| CMRR |
(typical)
> 45 dB |
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Output |
|
Connector |
XLR
3-pin Male |
| Impedance |
65
ohms |
| Maximum
Level |
+25dBm
into 600 ohms balanced, +21dBm unbalanced |
| Output
Gain Range |
±15
dB |
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Other Specifications |
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Power Requirements |
100,
120, 220, OR 240 VAC, 50-60Hz (specify voltage) |
| Dimensions |
1.75"H
x 8.25"W x 7.25" D (44.5mm x 209.5mm x 184.2mm)
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| Net
Weight |
3.5 lbs (1.6 kg) |
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There
are no downlaods available for this product at the moment.
But
please
contact us
should you require further information.
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