Cambridge SoundWorks P500 Subwoofer User Manual
Page 15
Fuse Replacement
The fuse holder is located on the base of the sub-
woofer. Both subwoofer models use a metric 5X20mm
size fuse, 7A.
To replace the fuse:
1)
Unplug the AC cord from the AC power source, then
remove the AC power cord from the speaker.
2)
Remove the fuse cap with a small, flat blade screw-
driver (see first and second diagram).
3)
Replace the fuse inside the fuse cap with another
metric 5X20mm size fuse, 7 A (see third diagram).
4)
Replace the fuse and cap in the subwoofer.
5)
Restore the sub to an upright position.
6)
Connect the AC power cord first to the subwoofer
and then to the power source.
15
15
5.
If you find the increase in output contributed by the
phase control is more than you care for, reduce the
volume control setting to bring the subwoofer output
back in balance.
Congratulations!
You have now adjusted the sub-
woofer to blend well with your main speakers.
6.
The
equalizer frequency and equalizer level
controls:
Your listening room’s shape and construction have an
unpredictable but significant effect on how strong the
deep bass output is
at your listening position
. These
controls adjust the strength of the deep bass without
affecting the subwoofer’s blend with the main speak-
ers. Follow this last procedure to adjust them.
a)
Adjust the
equalizer level
setting up to about
3 o’clock (see diagram in next column). From your
listening position, play the passage you used previ-
ously to adjust the subwoofer volume. It should be
easy to hear the effect of the control on deep bass
content. Repeat the passage at different equalizer
level settings. Make sure you assess the settings
from your normal listening position. Leave the con-
trol at your preferred setting.
b)
Play the same passage again and listen to higher
and lower settings of the
equalizer frequency
con-
trol from your preferred listening posititon.
For recordings with deep bass content, setting the
equalizer frequency
control below 30 Hz will produce
highly accurate and room-shaking results as it reveals
near-infrasonic signals. There are only two main rea-
sons to set this control above 20 Hz – the very deep
bass bothers people in adjoining rooms or the overall
output level isn't as strong as you would like.
If you have a large room, or desire very high
sound pressure levels, setting the
equalizer
frequency
control at 30 Hz or higher will still
provide good deep bass, but will allow greater
overall output.
equalizer
level
0
-6
+6
equalizer
frequency
40
20
60
d)
You may wish to repeat this adjustment procedure
with some different musical or video program pas-
sages. Remember, there is no “perfect” setting for
these controls. Once you have found a setting is
good for a few recordings, you can reliably consider
the adjustment complete.
Normal Use:
Afterwards, if you find you want more or less bass out-
put from your system, either adjust any available tone
controls on your receiver or adjust the volume control
on the Control Module.
We hope you enjoy the new sonic dimensions your
Newton Series powered subwoofer reveals to you!
6. Set the Controls
FUS
E
FUS
E
RISK OF FIRE
REPLACE FUSE
AS MARKED
T
7A 250V
Fuse Replacement