RCF BS 2620 - Page 8

ENGLISH
8
WARNING: do NOT connect the BLACK wire (8 ) to a 100 / 70 V line (as
this may damage the loudspeaker and / or the amplier)!
Notes:
- the loudspeaker iNput voltage (vd) shall correspoNd to the amplifier output voltage (va).
- the sum of NomiNal power values (pd x N) of all loudspeakers coNNected to the liNe
shall Not exceed the amplifier power (pa).
100 V CONSTANT VOLTAGE LINE
When connecting a BS 2620 to a 100 V constant voltage line, its wires (to be
linked) shall be chosen according to the desired power rate (as indicated in
the following table):
COLOUR POWER IMPEDANCE
RED Common wire (+, positive)
WHITE 20 W 500 
BLUE 15 W 666 
YELLOW 10 W 1 K
GREEN 5 W 2 K
BROWN 2.5 W 4 K
Connect the amplier positive output (+, 100 V, a) to the loudspeaker
common RED wire.
Connect the amplier negative output (–, 0, COM, b) to the other
loudspeaker wire (white, blue, yellow, green or brown) chosen according to
the desired power rate. Insulate all unused wires.
Before turning the amplier on, check connections again.
If connecting to a 70 V line, its power rate will be halved.
AMPLIFIER
Pa = Amplier power
Pd = Speaker power
n = Number of speakers
Vd = Speaker input voltage
Va = Amplier output voltage
Pa > Pd x n Va
Vd = Va Vd = Va Vd = Va