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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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