Loudspeaker Connection; Connection To La8 - L-Acoustics SB18 User Manual

4 4 4 4 LOUDSPEAKER

LOUDSPEAKER CONNECTION

LOUDSPEAKER LOUDSPEAKER
The SB18 subwoofer is equipped with two 4-point SpeakON
The IN connector allows receiving the audio signal, whereas the LINK
connector allows routing it to another SB18 enclosure in parallel.
SB18 parallel connection is only possible with the LA8 amplified controller.
Internal pinout for L-ACOUSTICS
®
SpeakON points
Transducer connectors
4.1

Connection to LA8

To cable SB18 with the LA8, three options are available:
Option A
Connect a DO cable (DO.7, DO10 or DO25) to the PA-COM
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
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
Option C:
Connect a DO cable (DO.7, DO10 or DO25) to the PA-COM
split the audio signals into one channel pair, feeding one 2-way active enclosure, and two single channels, each one
feeding one SB subwoofer.
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
2 SB18 subwoofers in parallel 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
LA8 may affect the acoustic results. Refer to the LA8 PACOM CABLES technical bulletin.
Subwoofer array in CARDIOID configuration
The reversed sub must be connected to OUT 1.
Impedance load
8 Ω for 1 SB18, 4 Ω for 2 SB18 in parallel.
Connecting eight SB18 to one LA8 with the DOSUB-LA8 (Option A)
SB18_UM_EN_2-0
CONNECTION CONNECTION CONNECTION
®
subwoofers
1+ 1- 2+
LF + LF - Not used
This cabling scheme needs a dedicated custom preset.
SPK 4 (OUT4)
SPK 3 (OUT3)
DOSUB-LA8
SPK 2 (OUT2)
SPK 1 (OUT1)
w w w . l - a c o u s t i c s . c o m
®
connectors.
2-
Not used
®
connector of the LA8 and use the DOSUB-LA8 to
®
connectors of the LA8, and use the SP-Y1
®
connector of the LA8 and use the DO3WFILL to
SP
SP
SP
SP
SB18
IN LINK
®
connector.
®
connector of the
7 7 7 7