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4073 Line Drive Amplifier
4075 Monitor Amplifier
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4073 Line
Drive Amplifier
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A single PCB laid out
for two line drive amplifiers,
in the case of the 4073 only one
side is fitted. PCB is laid out
to take a Lundahl 5402 Line
Output transformer thus
provinding a balanced floating
output if required. A 75 ohm
output is available before the
transformer. The nominal gain of
the amplifier is 10dB to provide
unity gain when the transformer
is fitted and the output
terminated. The gain may be
adjusted, if required, by
altering the feedback resistor
(R3). Typically 56k for 20dB
gain. (27k fitted as supplied)
Mixing resistors (R2a, b, c
& d) may be fitted enabling
ukp to 4 inputs to be mixed in
the amplifier. We would,
however, recommend the use of
the 4078 Mix amp if very low
noise mixing is required. The
output of the 4078 could then be
fed into the 4073. |
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| Stock no. 01-125 |
4073
Price: |
£27 |
| Technical
Specifications |
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Dimensions |
88 x 112 x 25mm (inc
5402 txf) |
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Supply |
+/-
12v DC @ 20mA |
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Response |
25Hz - 20kHz +/- 0.5dB
inc txf |
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Noise |
-92dB weighted
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Distortion |
+20dB output at
80Hz 0.09%
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+20dB
output at 1kHz 0.04% |
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4075 Monitor Amplifier &
PSU Eurocard Style
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The 4075 differs
from the 4175 only in that the
balanced input buffers are
omitted.
The PSU provides regulated
outputs of +/-12v DC at a
nominal 750mA per rail and
further provides the Power Amp
with unregulated DC as the
TDA2030 has built in
regulation. The board comes
fitted with a DIN41612 edge
connector (type B).
The 12/0/12 ac voltage should
be fed via the DIN41612
Connector,
(pin 28 ct, Pin 30 12v ac, Pin
32 12v ac)
The mains transformer can be
mounted on the board, if
required.
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| Stock no. 01-130 |
4075
Price: |
£53 |
| Technical
Specifications |
| · |
Dimensions |
Standard Eurocard 160mm
x 100mm x 40mm
fitted with DIN41612 type B plug
(32/64).
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