Volume knob: Adjusts the sound level of the subwoofer. This is used to give more or less
volume to the overall sound of the subwoofer. Also use this adjust to match the volume of the
subwoofer to other speakers in the system. When turning this up or down, it only affects the
signal of the subwoofer inputs. It will not adjust the volume of your main speakers. A good
starting point is to set the knob 1/3 the way up (10 o’clock).
Low Pass Filter: This is a variable filter that controls the upper frequencies of the subwoofer.
The RM series uses a filter that is continuously variable from 40 Hz to 140 Hz. If this is
adjusted properly, it will help smooth the listening frequencies between the subwoofer and the
main two speakers. NOTE: This must be set properly, please take the time to try different
settings. Setting the filter too high will cause the bass from the main speakers to overlap the
bass from the subwoofer and will cause a distorted bass sound. If the filter is set too low, there
will seem to be missing frequencies between the bass from the subs and the main speakers.
Remember this function is disabled if the switch is set to “DIRECT”. The crossover point will
need to be adjusted through the A/V processor.
Phase switch: This is used to select the polarity for the subwoofer and should be relative to your
front speakers. It allows for cancellation of bass energy caused by the particular listening room
or area. To set this: while sitting in the main listening seat/ chair, listen to a recording that has
low frequency percussion instruments or music with a continuous bass line. Try it first in the “0”
setting and then listening to the same music in the “180” setting. Then set the switch to the
setting that reproduced the most bass. Furniture, wall coverings, subwoofer location all can
affect this so if any of these things get changed or added, you will need to go through this process
again. This setting is also very important to set correctly if you are using two subwoofers in one
system. In the case of a two subwoofer system you need to have these set opposite of each other.
For example Sub #1 will be set at “0°” and Sub #2 will be set at “180°”.
Power Switch
:
This turns the AC power to the subwoofer either on or off.
Final Adjustments
Once all the speakers are wired and back in place, turn on the amplifier and/or
receiver. Start at a minimal volume until you have a chance to hear the total output of
the speakers. Use a movie or CD you are familiar with.
Remember: the amount of bass you hear and the stereo-image quality will be affected
by a number of different factors, including the rooms shape and size, wall coverings
and furniture location. Listen to a variety of music selections to see the bass level. If
there is too much bass, move the main two front speakers further away from any
nearby walls. So obviously, if you wish to have more bass, move these same speakers
closer to the wall.
Most receivers and preamps will have adjustments for each speaker in their main
menu. We suggest going into the “Speaker Setup” menu of the receiver or preamp and
adjusting each speaker properly. Consult the instruction manual for this equipment to
find out more about any and all adjustments that are offered.
Cleaning the Subwoofer
All RM series subwoofers feature lightly textured, durable paint finish. When needed, we
suggest cleaning with a damp cloth with water only. Do not use any kind of abrasive cleaners
or detergents.
