Page 13
adjustable crossover in the MFW-15. Begin at the highest setting (180Hz) and slowly
dial it down until it seems as if the bass is anchored in the front speakers rather than
just the subwoofer. We strongly recommend settings above 80Hz because this will allow
a nice blend with the other system speakers without making them work too hard with
reproducing the bulk of the low frequencies. If you are a traditional 2 channel enthusiast
or are using components free of a dedicated LFE output, this method is then the correct
choice.
The easiest way to test different methods and frequencies for crossing over your
subwoofer is by using bass sweeps from the AVIA Guide To Home Theater DVD.
Specically, the tones that descend in frequency from the individual satellite speakers
to the subwoofer are quite useful and effective. Using your SPL meter, watch for the
smallest amount of overall needle uctuation while you direct and descend the tones
from the main speakers to the subwoofer going around your system. If you are not sure
about how to do this or where to locate the AVIA disc, please call AV123 at (877) 543-
Setting Subwoofer Phase
The Phase Control controls the relative phase of the subwoofer to best reinforce the
other loudspeakers in your system. Adjustments to this control will change the MFW-
15 interaction with the rest of your speaker system, providing the least cancellation,
and thus the best response in any room. With SPL meter in hand (or, better yet, on a
tripod in the listening position), play an 80Hz tone (for this exercise the crossover point
must be set to 80Hz if you are not using the LFE Subwoofer Input) and rotate the Phase
Control from “0” to “180.” Watching your SPL meter, select the setting that results in the
biggest peaks in sound pressure levels (i.e. reads highest on the meter).
To verify your measurements, go back to the listening position and listen for yourself
using music you know. If the bass from the MFW-15 subwoofer seems to be coming
from the front speakers rather than noticeably separated from them and reduced in
output level, you have got it right. The optimum setting indicates the least amount of
bass wave cancellation, and should be left alone after setting until the subwoofer or
other speakers in your room are moved, or placement is altered in any way. With typical
front corner placement in most rooms you may very well nd that the “0” setting is best.
Caring for your MFW-15 subwoofer
Your AV123 MFW-15 subwoofer does not need much exterior maintenance other than an
occasional dusting. Please use care with the wood veneer nish and treat it as you would
any other ne furniture nish. Wood veneer surfaces can be cleaned with a damp cloth
(using water) if necessary. We recommend the 3M Yellow Detail Cloth (part # 39016) for
dust on both the black and wood veneer surfaces as it does not scratch the nish.
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern