Wharfedale Pro Diva 55 - Manual (Page 5)

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The uniform dispersion (60.5° conical pattern) of the Diva™ 55
makes it easy to place the speakers where you need them, rather than
trying to rearrange the room to accommodate the sound system. Mount the speakers above head level to get the full effect of the system
and cover the most people.
The
Diva™ 55
is an excellent background music speaker. It comes complete with an extraordinary state of the art wall mounting
system to make installation easy and safe. It can be mounted on a wall or ceiling in a vertical or horizontal position. Utilizing the
mounting system that is included with every
Diva™ 55
, installation is quick, safe and easily adjustable.
Ensure that the latch hooks fully engage when attaching the diva to the mounting bracket. Also ensure that the latch hook release lever
returns to its original position once the connection has been made, indicating that the diva loudspeaker is secure. Please refer to the
important warnings & safety instructions before you attempt installation!
SETTING UP/SPEAKER PLACEMENT
CONNECTIONS / WIRING
LOW-IMPEDANCE (8-OHM) SYSTEM:
The
Diva™ 55 features an internal line-matching transformer with a switch to configure the system in the most suitable way. For low
impedance systems turn the tap selector to the 8-ohm position.Keep in mind the capability of the amplifier working safely with loads less
than 4 Ohms. If you need more speakers, you would be wise to create a Constant Voltage System that allows the use of many more
speakers with a single channel of amplification.
HIGH-IMPEDANCE/CONSTANT-VOLTAGE SYSTEM:
The
Diva™ 55
features an internal line-matching transformer with four power/impedance selections for 70/100-volt line. In speaker
systems, anything over 32Ω is considered high impedance. Smaller wire can be used without excessive power loss.
The switchable power taps are:
• 7.5W, 15W, 30W and 60W (70 volt)
• 15W, 30W, 60W (100 volt)
You connect your speaker cable from the 70v or 100v output of your amplifier (or to an external line transformer if you are using a low
impedance amplifier and want to use it as a constant voltage amplifier) to the input terminals of the speaker. You will then adjust the
wattage of the transformer using the rotary switch under the logo medallion, to the correct setting.
As you would with any audio system, you figure out how many speakers you want to use and then divide that into the wattage of your
power amplifier - you should not exceed that load.
Transformer tap (W)
# Speakers
Amplifier Power