Setup guide, Subwoofers, bass and overall system performance – Outlaw Audio LFM-1Plus User Manual

Page 5

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Variable Tuning LFM Series Low Frequency Modules

Owner’s Manual

Setup Guide

Setup Guide

Connecting to Your System

To get the maximum performance from your new LFM subwoofer it must be
connected and, positioned properly within the room and configured to match
your speakers. To connect an LFM Series Subwoofer you will need either a single
audio interconnect cable (in the case of systems with a subwoofer output) or ad-
ditional speaker wire. We recommend the Outlaw Audio PCA SUB cable, but any
high quality, shielded audio interconnect will work properly.

Connecting to a System with a

Subwoofer Preamp Output

If a low-level subwoofer output is available, use this jack to connect your LFM
subwoofer to your Preamp or Receiver. See Diagram 1 on page 6.

To connect the LFM to a subwoofer preamp output:

1. Turn off all system components and unplug the processor or receiver

and the LFM from their AC power source.

2. Locate the “Subwoofer/LFE Output” on the rear panel of your receiver

or processor.

Any audio product that decodes Dolby Digital or DTS soundtracks will have
this type of jack. Depending on the particular brand or model, this RCA
jack may be labeled “Sub,” “Subwoofer,” or “LFE Out.” If your receiver
or processor does not have this type of output you will need to follow the
“Connecting to a System with No Preamp Outputs” instructions that
follow this section.

3. Connect one end of the subwoofer cable to the subwoofer or LFE output

on the receiver or processor.

4. Locate the connection labeled SUB IN on the rear panel of the subwoofer

and connect the other end of the subwoofer cable to that jack.

5. Plug the LFM’s power cord into the input on the LFM Series Subwoofer

and connect the plug to an un-switched AC outlet.
CAUTION: Due to the power requirements of the LFM, it must not
be connected to the accessory outlets on a receiver or processor. If a
power-strip or surge protector is used, make certain that it is rated to
accommodate your LFM’s power requirements.

6. Reconnect your processor or receiver 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.



Connect the subwoofer output of your receiver, processor or other source
device or accessory to this jack.



When your receiver does not have line level outputs available for a subwoofer
connection, connect the speaker outputs of the receiver here.



This indicator is green when the LFM is on and red when power is applied,
but the unit is in the standby mode.



When the speaker level inputs are used, connect the main speakers to these


Power Cord Jack

Connect the supplied AC power cord here, and then connect the plug end to
an un-switched AC wall output. Should the power cord need replacement,
make certain it is replaced with a cord having the identical power rating.


Fuse Housing

Contains a 20mm 3.15A slow blow fuse that protects the subwoofer. In the event
that it must be replaced, be certain that a fuse with the same rating is used.



Use this switch to turn the LFM subwoofer on or off. When the unit will not be
used for extended periods, we recommend turning this switch off to prevent
accidental activation.

Subwoofers, Bass and

Overall System Performance

The goal of an audio system is to recreate the source material as accurately as
possible. The components needed to perform this task are an audio source, a
receiver or processor/amplifier combination, and speakers.
In the era of digital, multi-channel sound, many listeners have chosen to use
frequency-limited “satellite” speakers for the front, center and surround channels.
By limiting their frequency range, these speakers may be made smaller, to more
easily fit into a wide range of spaces. However, by eliminating the capability to
reproduce bass frequencies, a separate speaker that is custom designed to deal
with signals below 200Hz is required. That speaker, along with its companion,
built-in amplifier is a powered subwoofer.
Even in two-channel systems with traditional bookshelf or tower speakers the
bottom two octaves of sound (20 Hz to 80 Hz) are frequently rolled off or not
reproduced at all. Here, too, a specialized speaker/amplifier combination is
required to deliver the full spectrum of sound from a system.
Finally, many multi-channel digital soundtracks contain a special audio channel
devoted specifically to extreme low frequency extension. This signal is the “.1” in
5.1, 6.1 and 7.1 systems and is sometimes referred to as the LFE channel.
Regardless of which of these situations create the need, a subwoofer is absolutely
essential for accurate audio reproduction of both movies and music. A properly
designed subwoofer such as an Outlaw LFM Series Sub can provide a visceral
impact that most speakers are not able to provide on their own. No matter what
type of speakers comprise the rest of your system, or what your favorite movie or
music is, the LFM series subwoofers complete the sonic presentation by providing
the impact that only a subwoofer can deliver.

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