Connecting to a System with No Preamp Outputs
If no
To connect a Variable Tuning LFM Series Subwoofer using high level inputs:
1.Turn off all system components and unplug the receiver and/or amplifier and the LFM from their AC power source.
2.Locate the front left/right speaker output terminals on your receiver or amplifier.
In cases where there are both “A” and “B” terminals, the “A” terminals should be used. Disconnect any wire that is presently connected to these terminals.
3.Using the same type of speaker wire used for your other speaker connections, connect the left and right channel speaker outputs of your receiver or amplifier to the LFM’s High Level Inputs.
Be sure to connect the speaker wires to the appropriate input binding posts on the back of the LFM, making certain that the polarity
4.Connect the speaker wires to the
Make certain that the polarity
5.Plug the LFM’s power cord into the input on the LFM Series Subwoofer and connect the plug to an
CAUTION: Due to the power requirements of the LFM Series Subwoof- ers, they must not be connected to the accessory outlets on a receiver or processor. If a
6.Reconnect your receiver and/or amplifier to the AC power source.
7.Proceed to the “Setting The LFM’s Controls” section to learn about the LFM’s controls and how they operate.
Subwoofer Placement
Placement of your LFM series subwoofer is a critical component in maximiz- ing its performance. The subwoofer's specific location in a room influences its “perceived” frequency response, sound pressure level (SPL), and overall accuracy. Since each listening room differs in virtually every aspect, the ideal location will also vary.
Owner’s Manual
Setting the Variable Tuning LFM Series Subwoofer’s Controls
An easy way to find the right spot to place your new Variable Tuning LFM Series Subwoofer is to experiment with what we call the “Subwoofer Switch Trick.” This process puts the subwoofer where you normally sit and then lets you play the role of the subwoofer.
First, place the subwoofer as close to your favorite listening position as possible. This should be directly in front of your couch or easy chair, right in the room’s “sweet spot.” Provided that there is no damage to your furniture, you may even place the subwoofer on the chair or couch, but remember that LFM Series Subwoofers are heavy, and the Outlaws are not responsible for any damage to your furniture or for arguments this might cause with other members of the household!
Second, activate the test tone from your processor or receiver’s internal test tone generator, or use your favorite test disc so that pink noise plays through the subwoofer. While the test tone is playing, walk around your room and find the spots where you hear the best bass response. Sometimes this may be in the center of the room, while in other cases you may find the best spot in a corner or along a sidewall.
Finally, turn off the test tone and move the subwoofer to the location where you hear the best bass response. If that location is unacceptable or impractical, repeat the procedure to the spot that is the best compromise between bass performance and aesthetic considerations.
Notes On Subwoofer Placement
Try to avoid creating a listening position that falls directly between the front and back walls. This may cause a strong interference effect due to the collision between bass waves bouncing off the rear wall and new waves emanating from the LFM. When this happens you might hear an unnatural “build up” in the low frequencies where the bass sounds “bloated”, based on the specific dimensions of the room and the particular frequency being reproduced.
In other situations you might encounter a “null”, which is caused by two low fre- quency waves canceling each other out. When this happens you will find that your favorite listening position is bass shy. In this type of placement situation, bass response will suffer greatly regardless of how powerful the subwoofer is. The best way to solve this problem is to change the location of the seating position so that the distance to the front of the room is different than that to the back of the room.
Setting the Variable Tuning LFM Series Subwoofer's Controls
Variable Crossover
By adjusting the variable crossover on the LFM, you can perfectly match your LFM Series Subwoofer to your main speakers. If your receiver or processor already has a built in crossover, disable the crossover on the LFM by flipping the
Determine the +/- 3dB point of your main speakers. This frequency is usually found on the speaker’s specifications sheet or may often be available on the speaker manufacturer’s web site. Start with the crossover set approximately to this point. By experimenting with the crossover frequency and level control, you can
Variable Tuning LFM Series Low Frequency Modules 
