Operation Of The La-2A; Input And Output Connections; Peak Reduction Control; Gain Control - Universal Audio LA-2A Manual

Leveling amplifier
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Operation of the LA-2A

Input and Output Connections

Input and Output connections are made using standard XLR style connectors. Terminal
strips are also provided.
IEC
Power
Transformer
Output connections
6)
Stereo Link
7)
Ground
8)
+ 600 ohms
9)
Center tap
10)
- 600 ohms
Barrier Strip Connections
If you wish to use the barrier strip instead of the XLR connectors, connect as follows:
INPUT: Connect + 600 (1) to HOT and –600 (5) to NEUTRAL.
OUTPUT: Connect + 600 (8) to HOT and –600 (10) to NEUTRAL.
Connect Ground (7) to the cable shield.

Peak Reduction Control

Operation of the LA-2A is very straightforward. There are only two controls that one must
deal with. The first is the Peak Reduction control. This control should be set so that the
compressor exhibits the desired amount of compression.
independently of the Gain Control.

Gain Control

This control does not affect the compression. The gain control should be set after the
desired amount of compression is determined using the Peak Reduction control. Once the
Peak Reduction control is set, adjust the Gain Control to achieve the desired output level.
10 9 8
7
6AQ5
R3
R37
12AX7
Input connections
1)
+ 600 ohms
2)
+ 250 ohms
3)
Center tap
4)
- 250 ohms
5)
- 600 ohms
Output
Input
6
T4
A-24
12BH7
12AX7
This control should be set
5 4 3 2 1
HA-100X
2

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