RCF M 501, Owner'S Manual, Page: 10 / 32

10
ENGLISH
NOTES ABOUT LOW IMPEDANCE CONNECTIONS
-
The total loudspeaker impedance must not be lower than the amplifier output
impedance. Note: a loudspeaker total impedance equal to the amplifier output one
permits to get the maximum deliverable power (but an higher loudspeaker impedance
entails less power).
- The total loudspeaker power shall be adequate for the maximum deliverable power of
the amplifier.
- The loudspeaker line shall be short (for long distances, it may be necessary to use cables
with large cross-section wires).
- Always use cables having wires with an adequate cross-section, considering the cable
length and the total loudspeaker power.
- Loudspeaker lines must be kept separated from the mains cables, microphone cables or
others, in order to avoid inductive phenomena may cause hum or noises.
-
Use loudspeaker cables with twisted wires to reduce hum caused by inductive effects
due to coupling with electromagnetic fields.
-
Do NOT connect the low impedance input directly to 70 / 100 V constant voltage lines.
- +
TOTAL IMPEDANCE: 4
Ω
8
Ω
8
Ω
+
+
- +
TOTAL IMPEDANCE: 8
Ω
8
Ω
+