L-ACOUSTICS ARCS II [8/12] Arcs arcs arcs arc
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L-ACOUSTICS ARCS II [8/12] Arcs arcs arcs arc

L-ACOUSTICS ARCS II [8/12] Arcs arcs arcs arc
ARCS
ARCSARCS
ARCS
®
II
IIII
II
SYSTEM
SYSTEMSYSTEM
SYSTEM
USER
USERUSER
USER
MANUAL
MANUALMANUAL
MANUAL
VERSION 1.2
ARCSII_UM_E N_1-2
w w w . l - a c o u s t i c s . c o m
8
88
8
4.2 SB28 connection
The SB28 subwoofer is equipped with one 4-point SpeakON
®
connector.
Internal pinout for SB28 subwoofers
SpeakON
®
points
1+
1
2+
2
Transducer connectors
LF +
LF
Not used
Not used
The SB28 is exclusively amplified by the L-ACOUSTICS
®
LA8 amplified controller.
To cable SB28
subwoofers with the LA8, three options are available:
Option A:
Connect a DO cable (DO.7, DO10 or DO25) to the PA-COM
®
connector of the LA8 and use the DOSUB-LA8 to
split the audio signals into four channels, each one feeding one subwoofer.
Option B:
Connect an SP cable (SP.7, SP5, SP10 or SP25) to one of the SpeakON
®
connectors of the LA8, and use the SP-Y1
cable to split the audio signals into two channels, each one feeding one subwoofer. The CC4FP adaptor allows
interfacing the SP and SP-Y1 cables. Apply the same cabling scheme with the other LA8 SpeakON
®
connector.
Option C:
Connect a DO cable (DO.7, DO10 or DO25) to the PA-COM
®
connector of the LA8 and use the DO3WFILL to
split the audio signals into one channel pair, feeding one two-way enclosure, and two single channels, each one feeding
one SB28 subwoofer.
This cabling scheme needs a dedicated custom preset.
Maximum of 4 SB28 subwoofers per LA8
1 SB28 subwoofer can be connected to each output channel on the LA8.
PA
-
COM
®
standard
Using cable other than specified in this document to connect a subwoofer via the PA-COM
®
connector of the
LA8 may affect the acoustic results. Refer to the LA8 PACOM CABLES technical bulletin.
CARDIOID mode
By connecting the reversed subwoofer to OUT 1, Option A and Option B allow using the cardioid preset
Impedance load
4 Ω for1 SB28.
Connecting four SB28 to one LA8 with the DOSUB-LA8 (Option A)
DO.7, DO10
or DO25
DOSUB
LA8
SPK 4 (OUT4)
SPK 3 (OUT3)
SPK 2 (OUT2)
SPK 1 (OUT1)

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