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SYSTEM
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USER
USER
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USER MANUAL
MANUAL
MANUAL
MANUAL
VERSION 2.0
KARA_UM_EN_2- 0
w w w . l - a c o u s t i c s . c o m
10
10
10
10
4.2
SB18 and SB28 connection
The SB18 subwoofer is equipped with two 4-point SpeakON
®
connectors.
The IN connector allows receiving the audio signal, whereas the LINK
connector allows routing it to another SB18 enclosure in parallel (LA8 only).
SB18 parallel connection is only possible with the LA8 amplified controller.
Refer to the
SB18 user manual
for connection to the LA4.
The SB28 subwoofer is equipped with one 4-point SpeakON
®
connector.
Internal pinout for L-ACOUSTICS
®
subwoofers
SpeakON
®
points
1+
1-
2+
2-
Transducer connectors
LF + LF - Not used Not used
To cable L-ACOUSTICS
®
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 SB subwoofer of the same type.
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 2-way active enclosure, and two single channels, each one
feeding one SB subwoofer.
This cabling scheme needs a dedicated custom preset.
One additional SB18 can be connected in parallel with each of the first ones, by using
SP
cables.
Maximum of 8 SB18 subwoofers per LA8 / Maximum of 4 SB28 subwoofers per LA8
2 SB18 subwoofers in parallel can be connected to each output channel on the 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
8 Ω for 1 SB18, 4 Ω for 2 SB18 in parallel / 4 Ω for 1 SB28.
Connecting eight SB18 to one LA8 with the DOSUB-LA8 (Option A)
D
O
.7
,
D
O
1
0
o
r
D
O
2
5
DOSUB-LA8
SPK 4 (OUT4)
SP
SP
SP
SP
SPK 3 (OUT3)
SPK 2 (OUT2)
SPK 1 (OUT1)
IN LINK
SB18
