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Adjusting the  Highpass

 

Crossover

The following instructions explain how to adjust the  Highpass

crossover outputs.

1 .

From the first page of the XOVER Menu, select HP. The first
OUTPUT SELECTION screen is displayed. This menu en-
ables you to select the speakers on the left, right, or both left
and right sides of the vehicle.

XOM/ HP

L E F T   R I G H T   B O T H

Notice the message in the upper left-hand corner of the

screen. This indicates that you have selected the  Highpass
crossover output.

2. Press the function key underneath the desired selection.

The second OUTPUT SELECTION screen is displayed.

This menu enables you to select the speakers in the front,
back, or both front and back areas of the vehicle. Notice
how the message in the upper left-hand corner is changed
to include  L=R.  This indicates that BOTH the left and right
sides of the vehicle were chosen in the previous screen. An

“R” in this position indicates that the Right side was se-

lected; an “L,” indicates the Left side.

-6-

Summary of Contents for Symmetry XOM

Page 1: ...METRY CROSSOVER XOM OWNER S OPERATOR S M A N U A L ...

Page 2: ...s 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 an...

Page 3: ...minal 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 1 0 Terms and Abbreviations Page 11 Warranty Page 1 3 ...

Page 4: ...ghside Maximum F3 highside F3 points Lowpass outputs Slope Minimum F3 Maximum F3 F3 points F3 Cut Off Frequency 1 6 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...

Page 5: ...io 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 d...

Page 6: ...t 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 c...

Page 7: ...ous menu options avail able in SYMMETRY To select an item from the menu press the function key that is under the desired option The Up arrow key increases the volume the Down arrow key decreases the volume The mute key drops the audio by 20dB The 12 numeric keys are used for entering your access code and future applications Returns you to the previous command or menu May also be used to cancel a c...

Page 8: ...d when SYMMETRY is turned off Selecting the Crossover Frequencies The following instructions explain how to adjust a crossover setting 1 From the Main Menu press the function key directly under neath XOVER The first page of the CROSSOVER Menu is displayed as follows HP CROSSOVER MENU BP1 BP2 LP SUB To display the second page press the blue Right arrow key The following is displayed lENTE CROSSOVER...

Page 9: ...and corner of the screen This indicates that you have selected the Highpass crossover output 2 Press the function key underneath the desired selection The second OUTPUT SELECTION screen is displayed This menu enables you to select the speakers in the front back or both front and back areas of the vehicle Notice how the message in the upper left hand corner is changed to include L R This indicates ...

Page 10: ... key underneath the desired selection To return to the XOVER Menu press the ESC key once Once the desired crossover output is selected its corre sponding CROSSOVER RESPONSE screen is displayed Be low is an example of a HIGHPASS CROSSOVER RESPONSE screen To increase the cutoff frequency F3 press the blue Right arrow key To decrease press the blue Left arrow key Notice how the graph changes as you a...

Page 11: ... 1 and XOM BP2 indicates Bandpass 2 2 Press the function key underneath the desired selection The second OUTPUT SELECTION screen is displayed XOM BP1 L R FRONT BACK BOTH This menu enables you to select the speakers in the front back or both front and back areas of the vehicle Notice how the message in the upper left hand corner is changed to include L R This indicates that BOTH the left and right ...

Page 12: ... frequency press the function key on the extreme left 6 To increase the cutoff frequency F3 press the blue Right arrow key To decrease press the blue Left arrow key Notice how the cutoff graph changes as you adjust the cutoff frequency here indicating the lowpass frequency cutoff at 303 Hz Use the blue Up and Down arrow keys to adjust the selected output s level over a l2dB range To return this se...

Page 13: ...This indicates that you have selected the Lowpass Crossover output 2 Once the desired crossover output is selected the LP CROSS OVER RESPONSE screen is displayed 3 To increase the cutoff frequency F3 range press the blue Right arrow key To decrease press the blue Left arrow key Notice how the graph changes as you adjust the cutoff frequency here indicating 80 Hz Use the blue Up and Down arrow keys...

Page 14: ...To increase the cutoff frequency F3 press the blue Right arrow key To decrease press the blue Left arrow key Notice how the graph changes as you adjust the cutoff frequency here indicating 202 Hz Use the blue Up and Down arrow keys to adjust the selected output s level over a 12 dB range To return this setting to unity gain 0 0 dB press the blue Zero Set Key 3 When finished press the ESC key twice...

Page 15: ...w side cutoff frequency press the function key on the extreme left 4 To increase the cutoff frequency F3 press the blue Right arrow key To decrease press the blue Left arrow key Notice how the graph changes as you adjust the cutoff frequency here indicating the lowpass cutoff frequency at 201 Hz Use the blue Up and Down arrow keys to adjust the selected output s level over a 12 dB range To return ...

Page 16: ...wer Doubling power raises the Sound Pressure Level SPL by about 3 dB Decibels A weighted The point when a speaker system begins to gradually roll off The standard unit of frequency Mea surements in Hz represent cycles per second or changes away from a basic state and back again In audio the basic state is defined as either ordinary air pressure without sound or its electri cal equivalent constant ...

Page 17: ...e noise level expressed in dB slope The rate at which a crossover attenuates out of band frequencies Expressed in dB per octave typical slopes are 6 12 and 18 per octave with 12 being the most common the higher the number the faster attenuation occurs relative to frequency sound pressure level A measurement of acoustic energy SPL expressed in dB total harmonic distortion THD The percentage of an a...

Page 18: ...arts or labor which would otherwise be provided without charge under this warranty are obtained from any other source than Rockford Fosgate or an Authorized SYMMETRY Service Center This warranty is the only express warranty and does not create any implied warranties Rockford Fosgate limits its obligations under any implied warranties under state laws to a period not to exceed the written warranty ...

Page 19: ...ivision of Rockford Corporation 546 South Rockford Drive Tempe Arizona 85281 U S A In U S A 602 967 3565 In Canada call Korbon 416 567 1929 In Europe Fax 49 421 487 877 In Pacific Asia Fax 65 339 0363 REV A 11 92 MAN 0031 ...

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