Wharfedale Pro Programme 35ET - Manual (Page 10)

HIGH-IMPEDANCE/CONSTANT-VOLTAGE SYSTEM:
If you are using the Pro30ET/35ET, wiring is just as easy - with a few more
steps. You connect your speaker cable from the 70.6v or 100v output of your
amplifier (or to an external line transformer) to the input terminals of the
speaker. You will then have to adjust the wattage of the transformer to the
correct setting.
As you would with any audio system, you will need to figure out how many
speakers that you want to use and then divide that into the wattage of your
power amplifier - you should not exceed that load, otherwise, you will
encounter distortion.
Because of the low wattage limitations of the individual speakers, this set up
is normally used in office sound systems and areas where you only want to
hear background music, or occasional messages to everyone within a facility.
You connect the + (positive) side to the + connector and the – (negative) to
the ground connector. If you are adding more speakers, connect your
speaker wire from the LEFT side connector and run it to the + (positive)
connector on the next speaker.
8
Amplifier Power
Transformer tap (W)
Number of Speakers
70
V
C
10
0V
C
10
W
5W
10
W
20
W
40
W
20
W
40
W
N
/C
70
V
C
10
0V
C
10
W
5W
10
W
20
W
40
W
20
W
40
W
N
/C
Programme Series
30ET/
35ET
The Programme 30ET features an internal line-matching transformer with
four power/impedance selections for 100-volt line. In speaker systems,
anything over 32Ω is considered high impedance. Smaller wire can be used
without excessive power loss. The four switchable power taps are 1.25W,
2.5W, 5W and 10W (Pro30ET) and 5W, 10W, 20W, 40W (Pro35ET).
FROM
AMPLIFIER
TO NEXT
SPEAKER