Rockford Fosgate XOM, Symmetry XOM Owner's/operator's Manual
METRY
CROSSOVER
[XOM]
OWNER’S/OPERATOR’S
MANUAL
Dear Customer,
Congratulations! We appreciate your purchase
of the Electronic Crossover
Module for your SYMMETRY system. As you get acquainted with the
XOM, you will find that it is not only easy to use, but also offers endless
possibilities for audio enjoyment.
For maximum performance we recommend you have your new Rockford
Fosgate product installed by an Authorized SYMMETRY Dealer, as we
provide specialized training through Rockford Technical Training Insti-
tute
(RTTI).
Please read your warranty and retain your receipt and
original carton for possible
future
use.
You will see additional SYMMETRY products introduced at regular
intervals for years to come, and your Authorized SYMMETRY Dealer can
quickly install these new optional modules at your convenience.
With
proper care and installation, SYMMETRY will provide you years of
listening enjoyment.
To add the finishing touch to your new
Rockford Fosgate image, order your
Rockford accessories, which includes everything from T-shirts and jackets,
to hats and sunglasses.
To get a free brochure on Rockford Fosgate products and Rockford
accessories, please call 602-967-3565 or FAX 602-967-8132.
PRACTICE SAFE
SOUND™
CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER
1OOdB
MAY CAUSE PERMANENT HEARING LOSS. HIGH POWERED AUTOSOUND SYSTEMS MAY PRODUCE SOUND PRESSURE
LEVELS WELL OVER 130dB. USE COMMON SENSE AND PRACTICE
SAFE SOUND.
©Copyright 1993 Rockford Corporation
Table Of Contents
Specifications
........................................................................ Page
1
Introduction
.......................................................................... Page
3
Remote Data Access Terminal ..............................................
Page
4
The XOVER
Menu..
............................................................... Page
5
Selecting the
Crossover Frequencies ..............................
Page
5
Adjusting the
Highpass
Crossover
.................................
Page
6
Adjusting the
Lowpass
Crossover
................................... Page
8
Adjusting the Sub Mono
Lowpass .................................. Page 9
Adjusting the Center Frequency
.................................. Page
10
Terms and Abbreviations
....................................................
Page
11
Warranty
.............................................................................
Page
13
XOM Specifications
Total Number of Outputs
Output Levels
Highpass
outputs
Slope
Minimum
F3*
Maximum F3
# F3 Points
Bandpass
1
outputs
Slope (lowside)
Minimum F3 (lowside)
Maximum F3 (lowside)
# F3 points
Slope (highside)
Minimum F3 (highside)
Maximum F3 (highside)
# F3 points
Bandpass 2
outputs
Slope (lowside)
Minimum F3 (lowside)
Maximum F3 (lowside)
# F3 points
Slope (highside)
Minimum F3 (highside)
Maximum F3 (highside)
# F3 points
Lowpass
outputs
Slope
Minimum F3
Maximum F3
# F3 points
*F3
= Cut Off Frequency
16
Each output adjustable
± 12dB
4 - FL, FR, BL, BR
12 dB/Octave
Highpass
1,820 Hz
20,650 Hz
256 points per output
4 - FL, FR, BL, BR
12 dB/Octave
highpass
125 Hz
15,000 Hz
256 points per output
12 dB/Octave lowpass
640 Hz
21,250 Hz
2.56 points per output
4 - FL, FR, BL, BR
12 dB/Octave
highpass
68 Hz
1,888 Hz
256 points per output
12 dB/Octave lowpass
9.5 Hz
3,125 Hz
256 points per output
2 - L, R (constant bass)
12 dB/Octave lowpass
57 Hz
3,000 Hz
256 points per output
-l-
Sub Lowpass
outputs
Slope
Minimum F3
Maximum F3
# F3 points
Center
Bandpass
outputs
Slope (lowside)
Minimum F3 (lowside)
Maximum F3 (lowside)
#
F3 points
Slope (highpass)
Minimum F3 (highside)
Maximum F3 (highside)
# F3 points
Electrical Specifications
Signal-To-Noise Ratio
Total Harmonic Distortion
Stereo Separation
Frequency Response
1
-
constant bass summed mono
24 dB/Octave lowpass
45 Hz
2,380 Hz
256 points
1
-
front summed mono
12 dB/Octave highpass
125 Hz
15,000 Hz
256 points
12 dB/Octave lowpass
640 Hz
21,250 Hz
256 points
>
90 dBA ref 0.750 Vrms output
>
97 dBA ref 2.300 Vrms output
<
0.03
%
ref 0.250 Vrms input
<
0.05 % ref 0.500 Vrms input
<
0.08
%
ref 0.750 Vrms input
>
72
dB
20 - 20,000 Hz ± 0.1
dB
Specifications subject to change
-2-
This manual describes the procedures for adjusting the electronic
crossover frequencies.
The XOM is one of the most versatile crossovers ever created. It takes
the four (4) preamplifier outputs from the Preamplifier Module
(PAM) and divides these signals into the following 16 outputs:
Front Left and Right Highpass
Front Left and Right Bandpass 1
Front Left and Right Bandpass 2
Back Left and Right Highpass
Back Left and Right Bandpass 1
Back Left and Right Bandpass 2
Left and Right Constant Bass
Lowpass
Summed Mono Constant Bass
Lowpass
Front Center Channel Bandpass
Each of the 16 outputs can be dynamically programmed via the
Remote Data Access Terminal (RDAT) to one of 256 possible crossover frequencies. In addition, the output levels may be varied over
a
±l2dB range.
-3-
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