Turbosound 50T - Manual (Page 6)

user manual
Impact 50
Impact 50 manual
page 6
TRANSFORMER TAP SETTINGS
The constant voltage Impact 50T is fitted with a 4–way input connector. Always
connect the speaker cable corresponding to the negative terminal on the
amplifier to the blue terminal. The cable corresponding to the positive terminal
should be connected to one of the following terminals:
70 volt line 100 volt line
RED 30W 200 ohms 60W 200 ohms
YELLOW 15W 400 ohms 30W 400 ohms
GREEN 7.5W 800 ohms 15W 800 ohms
BLUE Common terminal Common terminal
CONNECTING CABLES
Good quality loudspeaker cable should always be used throughout the
installation, with a minimum wire size of 12 gauge (1.5mm
2 ), and preferably 10
gauge (2.5mm 2 ) for longer runs, keeping the run as short as possible. This helps
to avoid wasting amplifier power in the resistance of the cable. High cable
resistance also lowers the
damping factor of the amplifier that affects its ability
to control loudspeaker cone movement.
POSITIONING
The Impact 50 has been designed with a rear facing port, which reinforces the
low frequency response of the speaker. Increased low frequency performance
can be achieved by placing the Impact 50 near to a wall. Even greater benefit is
achieved if the unit is placed in a corner. The optimum distance from the rear of
the enclosure to the wall is between 30–100 mm. Using the WB-50 adjustable
mounting bracket will ensure the loudspeaker is located at an ideal distance
from the wall.
INSTALLING THE IMPACT 50
The enclosure may be installed using a variety of different methods:
♦ Using the WB-50 wall bracket supplied,
which allows for horizontal and vertical
adjustment. Disassemble the WB-50 bracket
and attach the speaker plate to the Impact 50
using the M6 screws provided. Attach the
wall plate at the desired position and then
re–assemble the bracket, tightening the
thumbwheel after positioning the speaker to
give the desired coverage.