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FX Amplifier • Operating Manual
8.4 Speaker Cable Gauge
FX speaker connection cable gauge should be chosen appropriately to reflect
the type of installation. The following tables specify the appropriate cable
gauge for less than 0.5dB cable loss with different installation types and cable
lengths.
Cable Cross Section
2
(mm
)
0.5
0.75
1.5
2.0
4.0
Cable Gauge Table: Low-Z installations. 4Ω & 8Ω loads
Cable Cross Section
2
(mm
)
0.5
0.75
1.5
2.0
4.0
Cable Gauge Table: 70V Hi-Z installations. 60W & 125W power
Cable Cross Section
2
(mm
)
0.5
0.75
1.5
2.0
4.0
Cable Gauge Table: 100V Hi-Z installations. 60W & 125W power
Connections
Cable Gauge
Max Cable Length
(US)
in meters (ft), 4Ω load
≈20
2, (7ft)
≈18
4,(13ft)
≈16
6, (20ft)
≈14
9, (30ft)
≈12
14, (46ft)
Max Cable Length
Cable Gauge
in meters (ft),
(US)
125W/channel
≈20
84, (276ft)
≈18
132, (433ft)
≈16
210, (689ft)
≈14
334, (1,096ft)
≈12
532, (1,745ft)
Max Cable Length
Cable Gauge
in meters (ft),
(US)
125W/channel
≈20
171, (561ft)
≈18
269, (883ft)
≈16
430, (1,411ft)
≈14
683, (2,241ft)
≈12
1087, (3,566ft)
Max Cable Length
in meters (ft), 8Ω load
5, (16ft)
8, (26ft)
12, (39ft)
19, (62ft)
30, (98ft)
Max Cable Length
in meters (ft),
250W/channel
42, (138ft)
66, (217ft)
105, (345ft)
166, (545ft)
265, (869ft)
Max Cable Length
in meters (ft),
250W/channel
85, (279ft)
134, (440ft)
215, (705)
341, (1,119ft)
542, (1,778ft)
16
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