SB28
Subwoofer Enclosure
USER MANUAL
VERSION 1.1
SB28_UM_ML_1.1
w w w . l - a c o u s t i c s . c o m
10 en
Figure 4: Connecting one SB28 to an LA8 amplified controller
To ensure both high performance and safety, L-ACOUSTICS
®
recommends the exclusive use of
high-quality, fully insulated speaker cables made of stranded copper wire.
In order to preserve a high damping factor it is desirable to keep loudspeaker cables as short as
possible and with a gauge offering low resistance per unit length.
The following table provides information regarding the recommended wire cross-section versus length:
Table 1: Minimum wire cross-section versus length for Damping Factor > 20
Cross-section
Length for one SB28 / 4
Ω
mm
2
SWG AWG
m
ft
2.5 15 13
15
50
4 13 11
25
80
6 11 9
37
120
10 9 7
60
195
According to the calculation in Table 1, a DO25/DOSUB-LA8 cable combination can be used to power one SB28 (4
Ω
load) with a damping factor still greater than 20.
DO.7
, DO1
0,
o
r DO25
DOSUB-LA8
!
IMPORTANT
