LA Audio Electronic SPX20 Operation Manual page 7

Plugging into the inserts jacks on the front panel breaks the signal from the
rear panel XLRs
INPUT 2 & 3
These are balanced inputs on TRS jacks - see Fig 2.6.3
For ubalanced operation wire as described above for Input 1 inserts or use
a mono jack plug.
INPUT 4,5 & 6
These are all unbalanced inputs which have RCA/phono connectors.
These are wired with the centre pin as hot (signal +) and the sleeve as
screen (signal ground).
TAPE RECORD
This is line level output of the selected input or inputs. Output level
depends on the settings of the input TRIMs and on how many inputs are
selected at the same time. If the input TRIMs are set up as described in
the 'Description of Controls' sections then the level will be approximately
0dBu.
OUTPUTS section:
No user serviceable parts inside
Disconnect from mains before removing cover
This equipment must be earthed
Manufactured in the UK by
~
230V 50Hz
SERIAL No:
FUSE T50mA
OUTPUT 1 & 2
Outputs on the SPX20 are via 1/4" TRS jacks - see Fig 2.6.3
Tip
Ring
Sleeve Screen
Output amplifiers on the SPX20 are 'ground compensated balanced
impedance' type.
R
LA Audio
Hot
Cold
Signal ground
Page 7
OUTPUTS
2 1
L R L
Signal +
Signal -
RECORD OUT
L
R