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Pub. 42004-615L2
Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 6 of 15
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Interfaces
The unit interfaces to the multi-party cable and to the external loudspeaker, and auxiliary devices via P1,
a 16-pin connector.
Pin No. Function Description Pin No. Function Description
1
PL_L1
Party line (L1) 9
PL_L2
Party line (L2)
2
PG_L1
Page line (L1) 10
PG_L2
Page line (L2)
3
MT_L1
Mute (L1) 11
MT_L2
Mute (L2)
4
AUX0IN*
Auxiliary input (0) 12
AUX1IN*
Auxiliary input (1)
5
SPKR_8
Speaker (8-ohm) 13
EGND
Earth ground
6
SPKR_16
Speaker (16-ohm) 14
SPKR_C
Speaker (common)
7
N/C
No connection 15
N/C
No connection
8
AC_N
AC neutral 16
AC_H
AC hot
The P1 connections for the multi-party cable are separated from the speaker connections within the
enclosure.