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JL Audio Fathom f112 User Manual

JL Audio Fathom f112
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| Fathom f112 & f113Page 18
CONNECTING YOUR FATHOM
Balanced Inputs
If your home-theater receiver or preamplier/processor provides balanced
outputs, the Fathoms balanced inputs are the preferred connection. Balanced
connections are used extensively in professional studios and sound reinforcement
applications for a number of very good reasons. Besides ensuring proper grounding
between components, balanced signal transmission is designed to cancel induced
cable noise from the surrounding environment (particularly important with long
cable runs).e bottom line is that your system will be far less likely to exhibit
humming or other extraneous noises if you use balanced connections.
e Fathom subwoofers feature individual le and right balanced input
connections with XLR “combo” jacks. ese special jacks accept either a
three-pin male XLR connector or a “tip-ring-sleeve” (TRS) 1/4-inch (6.3 mm)
connector for compatibility with a wide range of equipment.
For systems with a mono subwoofer orLFE” channel connection, only the
jack labeled “Le or Mono” will be used. is applies to most modern multi-
channel receivers and preamplier/processors. Separate le and right input jacks
are provided for systems without a dedicated mono subwoofer connection. is
typically applies to two-channel audio equipment.
Appropriate balanced cables are available from your JL Audio dealer and are
not included with the Fathom.
Technical Notes:
Do not use the balanced inputs with unbalanced signals via adaptors.
e unbalanced inputs of the Fathom are optically isolated and preferable in
situations where only an unbalanced signal source is available.
Input connectors are congured according to Audio Engineering Society
recommendations for balanced signal cables as follows:
XLR Connection
Pin 1: Shield
Pin 2: Positive
Pin 3: Negative
TRS connection:
Tip: Positive
Ring: Negative
Sleeve: Shield
e Le and Right inputs on the Fathom
are internally summed to a single mono
channel. Since the Fathom is inherently a
“mono” or single channel device, you can
use the Le and Right inputs for the master
Fathom and then distribute the summed
mono signal to additional slave Fathoms in
the system.
IMPORTANT
IMPORTANT: IF YOUR RECEIVER OR PREAMPLIFIER/PROCESSOR DOES NOT
HAVE XLR OR 1/4-INCH TRS BALANCED OUTPUTS, PLEASE REFER TO THE
“UNBALANCED INPUTSSECTION ON PAGE 19 FOR INPUT CONNECTION
INFORMATION. DO NOT ATTEMPT TO CONNECT UNBALANCED OUTPUTS
TO THE FATHOM’S BALANCED INPUTS VIA ADAPTORS.

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JL Audio Fathom f112 Specifications

General IconGeneral
BrandJL Audio
ModelFathom f112
CategorySubwoofer
LanguageEnglish

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