Outline Stadia 100 LA Series, User Manual

Page: 8 / 12

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: +39 030.3581341
Fax +39 030.3580431
info@outline.it
www.outline.it
8
AMPLIFICATION
CABLE SELECTION AND AMPLIFIER CONNECTION
Stadia loudspeakers are two-way systems de-
signed to be used with two amplifier channels.
The mid-low frequency sections are marked with
‘LF’ and the high frequency sections with ‘HF’. Each
loudspeaker can be logically divided in four sections
from top to bottom, specified with letters ‘A’. ‘B‘, ‘C‘
and ‘D‘. Sections ‘A’ and ‘D’ are wired together, as
well as sections ‘B’ and ‘C’. These details are report-
ed in the loudspeaker’s side panel close to the con-
nectors and shown in the picture below.
The internal loudspeaker wiring allows multi-am-
plification (i.e. for electronic steering). In standard
configurations four short wires connecting together
the pins 1-5, 2-6, 3-7 and 4-8 on the barrier strip con-
nector enable to use only 2 amplifier channels.
A proper size amplifier and DSP are required to op -
erate the loudspeaker ensuring safe working condi-
tion and expansive dynamics.
The connection from the amplifier to the loud -
speakers must ensure proper energy transmission
and small losses. A general rule is that the cable’s
resistance should not be greater than the 10% of the
minimum impedance of the components to be con-
nected. Each Stadia 100 LA, when used in bi-wiring
has a nominal impedance of 4 Ω (LF) and 8 Ω (HF) and
a minimum impedance of 3.2 Ω (LF) and 8.1 Ω (HF).
The resistance of the cable can be found in the cat-
alogues of the cable manufacturers. These usually
report the resistance of the length of one conductor,
so this value shall be multiplied by 2 to consider the
total round trip distance.
The resistance of the cable (round trip) can also be
estimated with the following formula: R = 2 x 0.0172
x l / A. Where ‘R’ is the resistance in ohm, ‘l’ is the
length of the cable in meters and ‘A’ is the section
area of the wire in square millimeters.
The following table reports the resistance in ohm
per kilometer for different wire sections (calculated
with the formula above) and the recommended max-
imum length of the cable.
‘B’ & ‘C’
LF2 HF2
5(+) 6(-) 7(-) 8(+)
‘A’ & ‘D’
1(+) 2(-) 3(-) 4(+)
LF1 HF1
Orange
Blue
Yellow/Green
Red
White
Black
HF ‘A’
LF ‘A’
LF ‘B’
LF ‘C’
LF ‘D’
HF ‘D’
HF ‘
B
’
HF ‘
C
’
Purple
Brown
CONNECTION SECT. Pmax Zmin
MODEL
& S.N°
TESTED WEIGHT
STADIA LA SERIES
MOD ‘A’
MOD ‘B’
MOD ‘C’
MOD ‘
D’
HF2: HFB & HFC
LF2: LFB & LFC
HF1: HFA & HFD
LF1: LFA & LFD
Designed and
manufactured
with pride in Italy
CAUTION
READ THE OPERATING MANUAL
BEFORE USE.
‘A’ & ‘D’
‘B’ & ‘C’
1(+) 2(-) 3(-) 4(+)
LF1 HF1
LF2 HF2
5(+) 6(-) 7(-) 8(+)
S.N°: KXXTW014
MOD: O1STADIA100-30
TESTED
WEIGHT: 75 kg (165 lb)
www.outline.it
STADIA 100-30
HF1
HF2
4(+)/3(-)
8(+)/7(-)
240
240
16.2
16.2
LF1
LF2
1(+)/2(-)
5(+)/6(-)
800
800
7
7
Figure 7: Stadia wiring as shown on the loudspeaker’s label on the left (in thick black and red are represented
the link cables for standard bi-amping mode) and, on the right, the internal wiring.
Wire area [mm
2
] AWG
Round trip cable resistance
[Ω/km]
max cable length [m]
(R
<
= 0.32 Ω)
4 ~11 8.60 37
6 ~9 5.73 56
8 ~8 4.30 74
10 ~7 3.44 93
16 ~5 2.15 149