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Owner’s Manua l
Active Subwoofer Crossover
Page 2
IMPORTANT SAFETY INSTRUCTIONS
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED PERSONNEL.
1) Read the Instructions — All safety and operating instructions should be read
before the device is operated.
2) Retain the Instructions — e safety and operating instructions should be
retained for future reference.
3) Heed Warnings — All warnings on the device and in the operating
instructions should be followed.
e lightning ash with arrowhead
symbol, within an equilateral triangle, is
intended to alert the user to the presence
of uninsulated “dangerous voltage” within
the product’s enclosure that may be of
sucient magnitude to constitute a risk of
electric shock to persons.
e exclamation point within an
equilateral triangle is intended to alert the
user to the presence of important operating
and maintenance instructions in the
literature accompanying the product.
4) Follow Instructions — All operating and use instructions should
be followed.
5) Water and Moisture — e device should NOT be used near water – for
example, near a bathtub, washbowl, sink, laundry tub, in a wet basement, near
a swimming pool, etc.
6) Ventilation — e device should be situated so that its location or position
does not interfere with its proper ventilation.
7) Heat and Flames — e device should be situated away from heat sources
such as radiators, heat registers, stoves, replaces, or other devices which
produce heat.
8) Power sources — e device should only be connected to a power supply of the
type described in the operating instructions or as marked on the product.
9) Power Cord Protection — Power-supply cords should be routed so that they
are not likely to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs, convenience receptacles,
and the point where they exit the device.
10) Cleaning — e device should be cleaned only as recommended in the
operating instructions.
11) Nonuse Periods — e power cord of the device should be unplugged from
the outlet when the device is le unused for long periods of time.
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12) Lightning and Power Surges — To prevent damage due to power surges, we
recommend that you disconnect the device from the electrical outlet during
electrical storms and/or recurring power interruptions.
13) Object or Liquid Entry — Care should be taken so that objects do not fall
into and liquids are not spilled onto the device. Do not expose the device to
dripping or splashing from liquids. Do not place objects lled with liquids on
top of, or near the device, for example: ower vases, beverages, liquid-fueled
lamps, etc.
14) Damage Requiring Service — e device should be serviced by qualied
service personnel when:
a. the power-supply cord or plug has been damaged
b. objects have fallen or liquid has been spilled into the device
c. the device has been exposed to rain
d. the device does not appear to operate normally or exhibits a marked
change in performance
e. the device has been dropped or has been physically damaged
15) Servicing — e user should not attempt to service the device beyond what is
described in the operating instructions. All other servicing should be referred
to qualied service personnel.
16) Overloading — Do not overload wall outlets, extension cords, or outlet strips
as this can result in a risk of re or electric shock.
17) Grounding — is device is supplied with a three-prong, grounded power
cord. Precautions should be taken so that the grounding means of the device
are not defeated. Defeating the grounding prong on the device power cord
could increase the risk of electric shock and could result in permanent
damage to the device’s electronics.
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FCC COMPLIANCE STATEMENT
NOTE: is equipment has been tested and found to comply with the limits of Part 15 of the FCC
Rules. ese limits are designed to provide reasonable protection against harmful interference in
a residential installation. is equipment generates, uses and can radiate radio frequency energy
and, if not installed in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment o and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit dierent from that to which the
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
TABLE OF CONTENTS
Important Safety Instructions: ......................................... 2-3
Introduction:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Product Overview: ...................................................... 5
Package Contents and Placement Considerations: ........................... 6
Front Control Panel Layout: .............................................. 7
Rear Control and Connections Panel Layout: ............................... 7
Front Panel Controls in Detail: ........................................ 8-11
Rear Panel Control and Connections in Detail: ......................... 12-13
Connection Scenarios and Diagrams: ................................. 14-19
Setup Guides: ...................................................... 20-23
Frequently Asked Questions: ............................................ 24
Troubleshooting: ...................................................... 24
Limited Warranty / Service Information: ................................. 25
Installation Notes: ...................................................26-27
Features and Specications: ............................................. 28
INTRODUCTION
ank you for purchasing a JL Audio CR-1 active subwoofer crossover.
Your CR-1 has been designed in the U.S.A. by a passionate team of audio
professionals with vast experience in signal processing and a complete commitment
to “ahead of the curve” audio performance.
Please read this manual thoroughly in order to correctly integrate and achieve
the highest level of performance with your CR-1. Once your CR-1 is dialed in
and you are enjoying new levels of performance from your audio system, you will
wonder how you ever lived without one.
Enjoy.
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PRODUCT OVERVIEW
CR-1 acts an audiophile-grade “bridge”, seamlessly connecting a two-channel
audio system with a top-ight, powered subwoofer system. Powerful features and
a pristine, all-analog signal path make it a key component in optimizing an audio
system’s spatial and spectral performance. To minimize distortion and noise,
CR-1 employs top-grade component parts in its all-analog audio circuitry: 1%
precision resistors, JFET-input audio-grade op-amps, polypropylene lm-and-foil
capacitors and metallized-polypropylene lm capacitors, to name just a few. is
attention to component quality makes CR-1 a worthy partner to the nest audio
preampliers and ampliers.
CR-1’s input-output design makes it equally adaptable to studio, mastering
suite or audiophile, two-channel playback environments. Inputs and outputs are
provided for balanced (XLR or 1/4-inch TRS) and unbalanced (RCA) sources.
Independent buering of balanced and unbalanced outputs is employed, to
reduce the likelihood of noise. JL Audio’s dierential input technology eectively
rejects common-mode hum and noise on the unbalanced inputs.
From the CR-1’s stereo inputs, you can derive either a single “mono” (Le
+ Right) subwoofer signal, or separate signals, for separate le and right
subwoofers. A front-panel switch allows you to select between these modes.
e CR-1’s crossover functionality is built around two banks of high
precision, low-pass and high-pass Linkwitz-Riley lters. ese can be set as
12 dB/octave (moderate cuto slope) or 24 dB/octave (steeper cuto slope), via
a front-panel switch. For each lter pair, the cuto frequency is fully variable
from 30 Hz – 150 Hz via rotary controls. Behind these knobs, multiplying DACs
with monolithic ratio matching are employed to adjust the analog circuit’s lter
frequencies. is digitally–controlled, analog lter circuitry allows for high
precision in making frequency adjustments and facilitates precise matching
between the le and right channels for the ultimate in crossover delity and
transparency. e CR-1 oers 167 individual cuto frequency choices between
the 30 Hz and 150 Hz limits, in 0.70 Hz steps.
Another of CR-1’s unique and powerful features is the ability to alter the
damping behavior of each lter bank. Properly used, the CR-1’s damping controls
can improve the acoustic summing through the crossover region, compensating for
each speaker system’s frequency response and the way they acoustically interact.
At the center of the CR-1’s front panel, a convenient balance control permits ne
level adjustment of the subwoofer and satellite speakers, relative to one another.
is is useful for tweaking the sub/satellite balance to compensate for listening
conditions or program material, while always being able to easily return to the
reference setting. Each of the CR-1’s output channels can also be independently
muted via front-panel switches to aid in system setup and troubleshooting.
To facilitate sharing your subwoofer(s) between a home theater system and
a dedicated 2-channel system, the CR-1 has a special bypass feature, accessible
via a front-panel switch. When this bypass is engaged, the CR-1 will pass signals
connected to its dedicated managed bass inputs, completely bypassing the CR1’s crossover circuitry and level controls. is allows you to use your room’s
subwoofers for both 2-channel audio (via the CR-1’s bass management) and
multichannel audio (via your pre-pro or receiver’s bass management).
As you can see from this brief introduction, the CR-1 packs a lot of useful
technology and functionality. Please read the following sections thoroughly to
properly connect and set up your CR-1.
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CR-1
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Package Contents
e CR-1 Active Subwoofer Crossover is shipped from the factory with:
• Owner’s Manual
• IEC power cord (3-prong)
• 4 ea. RCA Shorting Plugs
• 2 ea. Rack-mounting ears. Installation requires the use
of a 4mm hex wrench (not included)
Placement Considerations :
Table-Top: e CR-1 ships from the factory congured as a “table-top”
component, including rubber feet. To use it in table-top mode, simply place
the unit in your equipment stand where it will be convenient to use and where
cable management will be optimized (a signicant number of audio cables will
typically be connected to the CR-1).
e CR-1 chassis is very robust and can easily support the weight of most
source components and signal processors. However, we do not recommend
placing heavier equipment, such as ampliers or receivers directly onto the CR-1.
We also do not recommend placing the CR-1 directly on top of a power amplier
or receiver, as the heat generated by those components could aect the CR-1.
Whenever possible, place the CR-1 on its own shelf or surface.
Rack-Mount: e CR-1 can be rack mounted in a standard 19-inch equipment
rack, through the use of the included rack-mount accessory kit. When installed
in a rack, the CR-1 occupies two (2) rack-units of space.
To convert the CR-1 for rack mounting:
1. Unscrew the rubber feet from the bottom of the CR-1.
2. Remove the 4 mm hex-head screws that secure the end covers of the front panel
3. Using the same hex-head screws removed in Step 2, attach the rack ears to
each end of the front panel, as shown in the diagram on this page.
Do not overtighten.
4. CR-1 is now ready to be installed into an equipment rack.
5. To protect the nish of the rack-mount ears, we recommend the use of
nylon washers between the rack-mounting screws and the front surface of
the rack-mount ears.
We do not recommend rack-mounting the CR-1 directly on top of a power
amplier or receiver, as the heat generated by those components could aect the CR-1.
End Covers
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Rack Ears
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Front Control Panel
Crossover
Function
page 8
Subwoofer
Power
page 8
Output Mode
page 9
Rear Controls and Connections Panel
TRS Satellite
Outputs
page 13
Unbalanced
Satellite
Outputs
page 13
Sub. Filter
Frequency
page 10
XLR Balanced
Satellite
Outputs
page 13
Subwoofer
Damping
page 11
Sub/Sat
Balance
page 10
Satellite
Damping
page 11
TRS Balanced
Subwoofer
Outputs
page 13
Sat. Filter
Frequency
page 10
Crossover
Unbalanced
Subwoofer
Outputs
page 13
Output
Muting
page 10
Slope
page 9
XLR Balanced
Subwoofer
Outputs
page 13
IEC-Style AC
Connector
page 13
Unbalanced
Stereo Inputs
page 12
Balanced XLR/TRS
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Stereo Inputs
page 12
Unbalanced
Managed Bass
Inputs
page 12
Balanced XLR/TRS
Managed Bass
Inputs
page 12
Managed Bass
Input Type
Switch
page 12
Ground Lift
Switch
page 13
Fuse
page 13
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FRONT PANEL CONTROLS IN DETAIL
Power switch
e power ( ) switch turns the AC power o ( ) or on ( ). When
the power switch is in the “o” mode, it completely interrupts voltage
from reaching the CR-1’s circuitry. e LED next to the power switch is
unlit when the power is o. When the CR-1’s power switch is in the “on”
( ) position, the CR-1’s circuitry is activated and the LED next to the
power switch will light up GREEN. ere is no auto turn-on mode.
Because the CR-1 is an audiophile-grade, analog device, its circuitry
can benet from reaching equilibrium aer turn-on, much like other
high-end audio equipment. Aer the unit has been o, a brief period
of warm up (several minutes) is desirable for best sonic performance.
Unless you will not be using the CR-1 for an extended period of time,
we recommend that you leave the power switch on. e CR-1 draws
a small amount of power when on: approximately 26 watts.
IMPORTANT: WHEN THE CR1 IS “OFF”, SIGNAL WILL BE PASSED DIRECTLY
FROM THE “MAIN STEREO INPUTS” TO THE “OUTPUTS TO SATELLITE
AMPLIFIER”, WITHOUT FILTERING. THIS ALLOWS YOU TO LISTEN TO YOUR
2CHANNEL SYSTEM IN FULLRANGE MODE, WITH NO SUBWOOFERS, BY
SWITCHING THE CR1 TO “OFF”
IMPORTAN T
Crossover Function (Bypass) Button
is feature allows you to share one or more subwoofers between separate
home theater and dedicated 2-channel stereo systems. is functionality can also
allow you to share main le and right loudspeakers between the two setups.
With your 2-channel preamplier connected to the CR-1’s “Main Stereo
Inputs”, and your home theater preamp/processor or receiver’s Subwoofer
Output connected to the CR-1’s “Managed Bass Inputs”, the CR-1 will act as a
switch between 2-channel and multi-channel listening modes, via the “Crossover
Function” switch.
When the Crossover Function is set to “On” (Button pressed in, not lighted),
the “Managed Bass Inputs” are completely disconnected and the CR-1 receives
its input signals only from its “Main Stereo Inputs” and outputs low-pass-ltered
signals via its “Outputs to Subwoofer(s)” and high-pass-ltered signals via its
“Outputs to Satellites”. is is the correct mode for 2-channel listening, and
indicates that the CR-1’s active crossover lters are in-line and functioning.
When the “Crossover Function” switch is set to “Bypass” (button out, lighted
red), the CR-1’s “Managed Bass Inputs” are connected directly to the “Outputs
to Subwoofer(s)”. In this “Bypass” mode, the CR-1’s “Outputs to Satellite
Amplier” will pass signals present at the CR-1’s “Main Stereo Inputs”, with no
processing. Each le or right RCA input passes signal only to the corresponding
le or right RCA output and each XLR/TRS balanced input only sends signal to
its corresponding balanced output. All of the CR-1’s crossover functions and level
controls are completely bypassed in this mode, meaning that whatever signals
are present at the inputs will be passed to the corresponding outputs. Most of the
CR-1’s front panel controls are inoperative in this mode. Only the “Subwoofer
Output Mode” switch and the “Output Muting” buttons will remain functional.
e primary purpose of the “Bypass” mode is to enable your multi-channel
receiver or preamp/processor to handle all bass management for your multichannel system. See Connection Scenario #2 for details on this method (page 22).
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Subwoofer Output Mode Switch
e “Subwoofer Output Mode” switch determines whether the low-pass
signal at the subwoofer outputs is in stereo (independent le and right signals), or
if both subwoofer outputs deliver a le + right (mono-summed) signal.
If you are using a single subwoofer, set the Mode Switch to “L+R” to sum both
le and right low-pass signals to mono for the single subwoofer.
If you have a pair of subwoofers, you can decide whether to make them
independent, le and right (“Stereo” Mode), or make them both output the same
mono-summed signal (“L+R” Mode). Experiment with both settings to determine
which works best in your room for 2-channel and multi-channel playback.
Crossover Slope Switch
e “Crossover Slope” switch changes the attenuation slope of the high-pass
and low-pass lters. CR-1 oers a choice between a moderate 12 dB/octave (2nd
order) and a steep 24 dB/octave (4th order) slope. A 24 dB per octave high-pass
lter attenuates signals below its corner frequency at a rate of -24 dB for every
halving of frequency. A 24 dB per octave low-pass lter attenuates signals above
its corner frequency at a rate of -24 dB for every doubling of frequency. e 2nd
order lter setting attenuates at only -12 dB per octave above or below each lter’s
corner frequency. With a steeper roll o slope, there is less “overlap” of acoustical
output between the satellite speakers and the subwoofer.
We recommend using the 24 dB/octave slope as a default, as it permits less
interaction between the main loudspeakers and subwoofers in the crossover
region. e steeper 24 dB/octave lter also does a better job of protecting the
main speakers from the eects of low-frequencies that are better handled by the
subwoofer(s). ere are some uncommon situations where a 12 dB/octave lter
may perform better, which is why the CR-1 includes the shallower slope option.
Eects of “Crossover Slope” Switch (low-pass and high-pass lters are shown)
10
0
-10
-20
-30
Voltage (dB)
-40
100 Hz Crossover Frequency
-50
10
100 1K
Frequency (Hz)
SatelliteSubwoofer
Subwoofer / Satellite Filter = 12dB
Subwoofer / Satellite Filter = 24db
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Frequency Controls
e high-pass and low-pass lters in the CR-1 are designed with a LinkwitzRiley alignment. is is true for both the 12 dB/octave and 24 dB/octave slopes.
In keeping with standard Linkwitz-Riley lter practice, the indicated lter
cuto frequency (aka “corner frequency”) is the -6 dB point, not the -3 dB point.
Electrically, when the CR-1’s high-pass and low pass lters are set at the same
crossover frequency, their outputs will overlap in the crossover region, summing
to a perfectly at response.
Due to acoustic factors and speaker response deviations, this at electrical
summation may not actually translate to a at acoustic summation in your room,
which is why the CR-1 oers independent “Frequency” settings for the high-pass
and low-pass lter sections, as well as a pair of very useful “Damping” controls
(see page 11).
e rotary “Frequency” control knob in the Subwoofer Section of the front
control panel determines the low-pass crossover lter frequency (in Hertz) that is
applied to the subwoofer output signal. e rotary “Frequency” control knob in
the Satellite Section of the front control panel determines the high-pass crossover
lter frequency (in Hertz) applied to the satellite output signal.
CR-1’s ability to “split” the crossover frequencies of the subwoofer and
satellites allows for precision system setup within a given acoustic space and
subwoofer/satellite system.
Sub/Sat Balance Control
e “Sub/Sat Balance” control knob allows easy, intuitive gain
manipulation greatly simplifying level adjustment of your satellites
relative to your subwoofer(s). To increase the relative loudness of
the satellites, simply turn the “Sub/Sat Balance” control clockwise
towards the “+Sat” end of the control markings. To increase the relative
loudness of the subwoofer(s), turn the “Sub/Sat Balance” control knob
counterclockwise towards the “+Sub” end of the control markings.
e “Sub/Sat Balance” Control works over a total range dierence of +/-12 dB
(i.e., the Satellites’ output gain can be adjusted to be up to +12 dB higher than the
Subwoofers, or vice versa.) However, to maintain extreme circuit linearity in the
CR-1, when you turn the Level Match Control to +2 dB on the Satellite side (i.e.,
turn up the Satellite level by 2 dB), the circuit actually cuts the Subwoofer output
by 1 dB and raises the Satellite gain by only 1 dB, giving you the desired 2 dB
dierence. Operating in this fashion minimizes the gain envelope of the circuitry
and maximizes the sonic transparency of the CR-1.
We recommend that you set up your subwoofer’s gain and your main
loudspeaker amplier’s gain so that you achieve a good reference subwoofer level
with the “Sub/Sat Balance” control set at “0” (12 O’Clock). is way, you can
always easily return to your reference level setting.
Output Muting Buttons
e “Output Muting” buttons will “Mute” (turn o) the selected satellite or
subwoofer output when the button is pressed “in.” In the muted state, the button will
light up RED. During normal operation the “Output Muting” buttons are unlit.
Output muting can be helpful when troubleshooting or performing measurements
on your sound system. Selectively turning your individual speakers “on” or “o”
will help you isolate individual channels or speakers and determine which units are
functioning properly and which ones may be having problems.
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Damping Controls
ere are two “Damping” controls on the CR-1, one in the Subwoofer Section
and another in the Satellite Section of the front control panel. is precision
tuning feature allows you to compensate for loudspeaker response variations in
the crossover region. e “Damping” controls work by altering the damping of
the crossover lters. In technical terms, the controls raise or lower the “Q” factor
of each lter. However, the number markings on the “Damping” controls are for
reference only and do not directly refer to any specic “Q” value.
In plain language, the Subwoofer and Satellite “Damping” controls allow the
small frequency ranges around each lter’s initial roll-o region to be boosted
(+) or cut (–), outside of the standard Linkwitz-Riley lter alignments. When
set correctly, the “Damping” controls provide a nal “tweak” to an expertly
integrated subwoofer system. For best results, the “Damping” controls should
only be addressed aer the subwoofer(s) have been set correctly for polarity and
phase (refer to your subwoofer manuals for details).
If the crossover region sounds “thin,” turn the knobs to the right towards
the “+” numbers, creating a rise in response near the lter’s cuto frequency.
If the crossover region sounds “thick” or exaggerated, turn the knobs to the le
towards the “–” numbers, creating a soer corner around the lter’s cuto frequency.
See the diagram for a visual explanation of the “Damping” controls’ eects.
Eects of “Damping” controls on frequency response (low-pass and high-pass lters are shown)
10
SatelliteSubwoofer
0
-10
Subwoofer / Satellite Damping = +5
-20
-30
Voltage (dB)
-40
-50
100 Hz Crossover Frequency
101 100 1K 10K
Subwoofer / Satellite Damping = Ø
Subwoofer / Satellite Damping = -5
Frequency (Hz)
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REAR PANEL CONTROLS AND CONNECTIONS IN DETAIL
Main Stereo Inputs
e “Main Stereo Inputs” receive the primary Le and Right outputs from
your 2-channel preamplier. is is the full-bandwidth stereo signal, which will
be split by the CR-1 to feed the satellite amplier and subwoofer(s).
If your preamplier only oers unbalanced RCA-type outputs, use RCAterminated, unbalanced cables connected to the CR-1’s “Unbalanced” jacks.
If your preamplier oers balanced output connections, use balanced XLR
or TRS terminated cables, connected to the CR-1’s “Balanced” XLR/TRS combo
jacks. If the “Unbalanced” RCA-type inputs of the CR-1 will remain unused,
insert the supplied RCA-type shorting plugs into these jacks, to eliminate the
possibility of noise entering open, unbalanced input connections.
Note that all four (XLR/TRS and RCA) “Main Stereo Inputs” are separately
buered and can be used independently. It is therefore possible to connect two
dierent preampliers to the CR-1’s “Main Stereo Inputs”, with one connected
to the balanced inputs and another to the unbalanced inputs. As long as only one
preamplier is powered and delivering signal at one time, the CR-1 will behave
normally, although it may require some adjustment of the “Sub/Sat Balance”
control to account for level dierences between preampliers.
If both connected preampliers are on and delivering signals to the CR-1
simultaneously, the CR-1 will not be damaged, but it will sum the balanced and
unbalanced input signals together, which may sound very strange.
The Balanced Input Connections of
the CR-1 utilize Neutrik® Combo XLR/
TRS Connectors. These connectors
are designed to accept either type of
balanced input connector.
Managed Bass Inputs
e CR-1’s “Managed Bass Inputs” are designed to receive the subwoofer
signal(s) sent by your home-theater receiver or processor, allowing you to share
your room’s subwoofers with a multi-channel home theater system.
If the HT receiver/processor only oers unbalanced outputs, use RCAterminated, unbalanced cables connected to the CR-1’s “Unbalanced” RCA-type
“Managed Bass Inputs”.
If your HT receiver/processor oers balanced output connections, use
balanced XLR or TRS terminated cables, connected to the XLR/TRS combo jacks
labeled “Bal anced ”. If the “Unbalanced” RCA-type “Managed Bass Inputs” will
remain unused, insert the supplied RCA-type shorting plugs into these jacks, to
eliminate the possibility of noise entering open, unbalanced input connections.
When the front panel “Crossover Function” switch is in “Bypass” mode
(switch “out” and red LED indicator lit), the “Managed Bass Inputs” are
connected directly to the “Outputs to Subwoofers” and no signal processing
occurs in the CR-1. e signal presented to the “Managed Bass Inputs” can be
either stereo (independent Le and Right channels) or mono (incoming signal is
already a summed (combined) signal for the subwoofer. See “Input Type” switch.
IMPORTANT: IF YOU FEED ONLY ONE MANAGED BASS INPUT IN THE
MONO INPUT MODE, THE SIGNALS ON THE INDIVIDUAL LEFT AND RIGHT
SUBWOOFER OUTPUTS WILL BE ONLY HALF THE VOLTAGE LEVEL OF THE
INPUT 6 DB. IF THIS LOSS OF OUTPUT LEVEL POSES A PROBLEM FOR
YOUR SYSTEM, USE A YADAPTOR TO SEND YOUR MONO INPUT SIGNAL
TO BOTH THE LEFT AND RIGHT MANAGED BASS INPUTS THIS ALLOWS
YOU TO RECOVER THE 6 DB SIGNAL LOSS.
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“Input Type” Switch
Next to the “Managed Bass Inputs” on the rear panel of the CR-1 is the
“Input Type” switch, which determines whether the CR-1 maintains incoming
signals from your home theater receiver/preamp-processor in stereo (independent
Le and Right channels), or whether CR-1 sums independent signals to mono.
In “Stereo” mode, the Le Managed Bass Input corresponds directly to the Le
Subwoofer Output. e same is true for the Right channel. In “MONO” mode
only the “Le (or Mono)” channel is active.
Outputs to Satellite Amplier
e “Outputs to Satellite Amplier” are the primary stereo outputs to the
amplier that drives your Le and Right stereo speakers. ese outputs carry
the high-pass ltered signal (frequencies ABOVE the crossover frequency) to the
satellites. Choose the output type that matches the inputs on your main speaker
amplier. If the amplier oers both, balanced is the preferred method (XLR or TRS.)
e balanced XLR and TRS outputs share circuitry and both should NOT be
used at the same time (choose only one balanced output type). e XLR and RCA
outputs have separate buer amps and can be used at the same time, if desired.
Outputs to Subwoofers
ese are the primary outputs to one or more subwoofers, carrying the lowpassed signal (frequencies BELOW the crossover frequency) to the subwoofers.
As with the “Outputs to Satellite Amplier” (below) the XLR and TRS
balanced outputs share circuitry and should not be used at the same time.
However, the XLR and RCA outputs have separate buer amps and can all be
used at the same time to feed multiple subwoofers.
Ground Lift Switch
e Ground Li Switch “lis” (isolates) the Pin 1 (shield) ground of the XLR
and TRS connectors from chassis ground in the CR-1. is can be useful in
solving some noise problems, typically 60 Hz hum. If you do not have any hum
noise, leave this switch in the “Grounded” position. Note that if you change
any of your audio equipment upstream of the CR-1, you may need to revisit this
switch setting for best system noise performance. is switch will have no eect
on unbalanced (RCA) connections.
Fuse Holder
e Fuse Holder accepts the properly sized (250 V, 0.50 amp, slow-blow, 5x20
mm cartridge–type) AC fuse. Please call JL Audio Technical Support if your CR-1
will not power up.
IEC-Style AC Connector
e IEC-Style AC Connector accepts the standard IEC three-prong power
cord that is included with the CR-1. ONLY use a three-prong (grounded) power
cord with the CR-1. Use of a two-prong plug, or a “cheater plug” may result in
damage to the CR-1, which would not be covered under warranty.
|
CR-1
Page 13
Page 14
SCENARIO 1:
2-channel Subwoofer/Satellite System, Bass-Managed by the CR-1
e CR-1 connects between your 2-channel preamplier and your 2-channel
amplier as shown in the diagram on the opposing page. ese connections can
be made via balanced cables (XLR or TRS) or via unbalanced cables (RCA-type)
– OR – any combination of these, in pairs.
For example, you may connect your stereo preamplier’s main outputs to
the “Main Stereo Inputs” of the CR-1 via balanced XLR cables. en, you can
connect the CR-1’s “Outputs to Satellite Amplier” to a stereo amplier via
balanced TRS cables, and then connect the CR-1’s “Outputs to Subwoofer(s)”
to the subwoofers using unbalanced RCA cables. e CR-1 gives you unmatched
exibility to interconnect components with various input/output congurations.
Balanced connections generally provide superior noise rejection and ensure
proper grounding between components. If your 2-channel preamplier, amplier
and subwoofer(s) have balanced connections available, we highly recommend that
you use them.
Do not mix balanced and unbalanced connections for a given stereo signal
pair. e balanced and unbalanced connections have dierent gains and mixing
them within a stereo pair will result in a level imbalance between channels.
If you are using only one subwoofer, set the CR-1’s front-panel “Subwoofer
Output Mode” switch to “L+R” (mono). If you are using more than one
subwoofer, you may choose “L+R” (mono) or “Stereo” subwoofer modes
depending on your room setup and personal preference.
When the CR-1 is connected as shown in
this scenario, the operating modes and
behaviors are as follows:
Power: On and “Crossover Function”
switch: “On”
“Outputs to Subwoofers” are low-pass
ltered by the CR-1
“Outputs to Satellites” are high-pass
ltered by the CR-1
Power: On and Crossover Function
switch: “Bypass”
“Outputs to Subwoofers” are o.
“Outputs to Satellites” pass signals
directly from “Main Stereo Inputs”,
unltered (full-range).
Power: O
Same as “Bypass” above.
IMPORTANT: WHEN THE CR1 IS “OFF”, SIGNAL WILL BE PASSED DIRECTLY
FROM THE “MAIN STEREO INPUTS” TO THE “OUTPUTS TO SATELLITE
AMPLIFIER” WITHOUT FILTERING. THIS ALLOWS YOU TO LISTEN TO YOUR
2CHANNEL SYSTEM IN FULLRANGE MODE, WITH NO SUBWOOFERS, BY
SWITCHING THE CR1 TO “OFF”
Page 14
IMPORTAN T
| CR-1
Page 15
SCENARIO 1 CONNECTION DIAGRAM:
Balanced
LEFT
BALANCED
BALANCED
MAIN OUTPUTS
OR
CR -1
MAIN
STEREO INPUTS
MAIN STEREO INPUTS
RIGHT
BALANCED
SOURCE A SOURCE B SOURCE C SOURCE D SOURCE E TAP E OUT
Unbalanced
ACTIVE SUBWOOFER CROSSOVER
RIGHTLEFT
BALANCED
L R L RRIGHTLEFT
OUTPUTS TO
SATELLITE
AMPLIFIER
BALANCED
OUTPUTS TO SATELLIT E AMPLIFIER MANAGED BASS INPUTS
BALANCED
SOURCE INPUTS
(OR MONO)
BALANCED
MANAGED BASS INPUTS
only feed subwoofer(s)
when crossover is bypassed.
BALANCED
Stereo
Balanced
OUTPUTS TO
SUBWOOFER(S)
BALANCED
OUTPUTS TO SUBWOO FER(S)
OR
CR-1
This device complies with part 15 of the FCC rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
CAN ICES-3(B)/NMB-3(B)
BALANCED
Isolated
Grounded
Unbalanced
Stereo Preamplier
FUSE
Replace fuse with proper
type and value only.
Refer to manual.
CR-1 SERIAL NUMBER:
Warranty void if serial number is removed, altered or defaced.
C R -1
Balanced
BALANCED
LEFT
Balanced Connection
Unbalanced Connection
OR
STEREO
INPUTS
BALANCED
Unbalanced
RIGHT
LEFT POWERED
SUBWOOFER
RIGHT POWERED
SUBWOOFER
OUTPUTS TO LOUDSPEAKERS
LEFT
RIGHT
LEFT LOUDSPEAKER RIGHT LOUDSPEAKER
Stereo Amplier
WARNING! TURN OFF THE CR-1 AND ALL OTHER EQUIPMENT IN THE
SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS!
|
CR-1
WARNING
Page 15
Page 16
SCENARIO 2:
2-channel Subwoofer/Satellite System that is Bass-Managed by the CR-1 and also
shares active subwoofers with a separate multi-channel home theater system
When the CR-1 is connected as shown in
this scenario, the operating modes and
behaviors are as follows:
is scenario shows how you can share your room’s subwoofer(s) between
a completely separate home theater (HT) and a stereo, 2-channel system. In
this scenario, your HT receiver (or amplier) will power dedicated Le, Center,
Right, and surround speakers. A separate, dedicated stereo amplier will power
separate, dedicated stereo Le and Right speakers (not shared with the HT setup.)
e subwoofer(s) will be shared between both systems, using the CR-1 as a switch
to select the operating mode.
Most HT receivers and preamp/processors provide a single (mono) subwoofer
output; however, a few high-end receivers and processors may oer dual subwoofer
outputs. For this reason, CR-1 has le and right “Managed Bass Inputs”.
e 2-channel amplier and preamplier connect to the CR-1 exactly as
shown in the diagram at le and as described in Scenario #1, on page 14.
Next, connect the HT receiver’s or HT preamp/processor’s subwoofer outputs
to the “Managed Bass Inputs” on the CR-1. You may use XLR (balanced) or
RCA (unbalanced) cables to make these connections. en, set the “Input Type”
switch located next to the “Managed Bass Inputs” to the “Stereo” or “Mono”
position, depending on the output from your HT receiver or HT preamp/
processor (this switch will usually be set to “MONO”.)
If you connect only one subwoofer signal to the “Managed Bass Input”, be
sure to use the corresponding Le or Right “Output to Subwoofer” on the CR-1.
Using the opposite one will result in no subwoofer signal.
If you are using one subwoofer, set the CR-1’s front-panel “Subwoofer Output
Mode” switch to “L+R” (mono.) If you are using more than one subwoofer, you
may decide whether to choose “L+R” (mono) or “Stereo” subwoofer modes
depending on your room setup and personal preference.
Power: On and “Crossover Function”
switch: “On”
“Outputs to Subwoofers” are low-pass
ltered by the CR-1
“Outputs to Satellites” are high-pass
ltered by the CR-1
Power: On and Crossover Function
switch: “Bypass”
“Outputs to Subwoofers” pass signals
directly from the “Managed Bass Inputs”
“Outputs to Satellites” pass signals
directly from “Main Stereo Inputs”,
unltered (full-range).
Power: O
Same as “Bypass” above.
IMPORTANT: WHEN THE CR1 IS OPERATING IN “BYPASS” MODE, THE
“SUBWOOFER OUTPUT MODE” SWITCH ON THE FRONT PANEL WILL HAVE
NO EFFECT AND THE MANAGED BASS SUBWOOFER SIGNAL FROM YOUR
HT RECEIVER OR PREAMP/PROCESSOR WILL BE PASSED THROUGH THE
CR1 WITH NO ALTERATION.
Page 16
IMPORTAN T
| CR-1
Page 17
SCENARIO 2 CONNECTION DIAGRAM:
SOURCE INPUTS
L R L RRIGHTLEFT
OUTPUTS TO
SATELLITE
AMPLIFIER
BALANCED
OUTPUTS TO SATELLITE A MPLIFIER MANAGED BASS INPUTS
BALANCED
Balanced
BALANCED
BALANCED
MAIN OUTPUTS
LEFT
OR
CR -1CR -1
MAIN
STEREO INPUTS
MAIN STEREO INPUTS
RIGHT
SOURCE A SOURCE B SOURCE C SOURCE D SOURCE E TAPE OUT
BALANCED
MAIN OUTPUTS
Unbalanced
ACTIVE SUBWOOFER CROSSOVER
RIGHTLEFT
BALANCED
(OR MONO)
BALANCED
PREAMP OUTPUTS
MANAGED BASS INPUTS
only feed subwoofer(s)
when crossover is bypassed.
Stereo Preamplier
SUB/LFE
SUBWOOFER/LFE OUTPUT
BALANCED
Stereo
SUBWOOFER(S)
BALANCED
OUTPUTS TO SUBWOO FER(S)
OUTPUTS TO
LEFT
SURROUND
CR-1
This device complies with part 15 of the FCC rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
CAN ICES-3(B)/NMB-3(B)
BALANCED
Isolated
Grounded
DEDICATED HT LOUDSPEAKERS
FRONT
LEFT
OUTPUTS TO LOUDSPEAKERS
CENTER
FRONT
RIGHT
SURROUND
HT Receiver
FUSE
Replace fuse with proper
type and value only.
Refer to manual.
CR-1 SERIAL NUMBER:
Warranty void if serial number is removed, altered or defaced.
C R -1
RIGHT
Balanced
BALANCED
LEFT
Balanced Connection
Unbalanced Connection
OR
STEREO
INPUTS
BALANCED
Stereo or Mono
Unbalanced
RIGHT
Balanced
LEFT POWERED
SUBWOOFER
OUTPUTS TO LOUDSPEAKERS
LEFT
OR
RIGHT POWERED
SUBWOOFER
RIGHT
Unbalanced
Stereo Amplier
DEDICATED 2-CH LOUDSPEAKERS
LEFT LOUDSPEAKER R IGHT LOUDSPEAKER
WARNING! TURN OFF THE CR-1 AND ALL OTHER EQUIPMENT IN THE
SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS!
|
CR-1
WARNING
Page 17
Page 18
SCENARIO 3:
2-channel Subwoofer/Satellite System that is Bass-Managed by the CR-1 and also
shares active subwoofers AND MAIN L-R SATELLITE SPEAKERS with a separate
multi-channel home theater system
is scenario applies to hybrid home theater / 2-channel setups which will share
subwoofers and ALSO share the main le/right loudspeakers. In this setup, your
home theater receiver (or amplier) will power your Center and Surround speakers
and pass preamp-level, Le and Right signals to the CR-1. A dedicated, separate
stereo amplier powers the Le and Right speakers for both the multi-channel and
the 2-channel system. e subwoofer(s) will also be shared between both systems.
is scenario requires that you connect two dierent components to
the “Main Stereo Inputs” of the CR-1. is takes advantage of the CR-1’s
independently buered, balanced and unbalanced input architecture. It is
intended that you use only one front-end component at a time: i.e. either your
HT receiver - OR - your stereo preamp, not both at once. If you accidentally turn
both on, the CR-1 will not be damaged, but it may sound very strange to hear
both sources playing at the same time.
e components that will connect to the “Main Stereo Inputs” will be your
home theater receiver or preamp/processor, and your 2-channel preamplier. Your
home theater receiver must have preamp-level (line-level) outputs for its main le
and right channels.
Connect your 2-channel preamp’s Le and Right outputs to the balanced (XLRtype) “Main Stereo Inputs” of the CR-1 with the appropriate cables (use RCA to
XLR adaptors if necessary.) en, connect the home theater receiver (the “Bypass
component”) to the unbalanced (RCA-type) “Main Stereo Inputs” of the CR-1.
When in Bypass mode, Satellite signals are passed from input to output ONLY on
the same connector types; i.e., from XLR to XLR - or - RCA to RCA. Output-type
conversion IS NOT ACTIVE in Bypass mode. erefore, be sure to connect the
“Bypass component” on the RCA inputs.
Similarly, since we want the stereo amplier that powers the Le and Right
shared speakers to work for BOTH the stereo system and the home theater system,
the stereo amplier MUST be connected to the CR-1 Satellite Outputs ON LY on the
RCA connectors. Use RCA to XLR adaptors if necessary.
Most home theater receivers and preamp/processors provide a single (mono)
subwoofer output; however, a few high-end receivers and processors give you dual
subwoofer outputs. Connect the receiver’s subwoofer outputs to the Le and/or
Right “Managed Bass Inputs” on the CR-1. en, set the “Managed Bass Input”
se ction’s “Input Type” switch to the “Stereo” or “MONO” position, depending on
the output from your receiver (this switch will usually be set to “MONO”.)
If you connect only one subwoofer signal to a “Managed Bass Input” on the
CR-1, be sure to use the corresponding Le or Right “Output to Subwoofer” on the
CR-1. If you are using one subwoofer, set the CR-1’s front-panel “Subwoofer Output
Mode” switch to “L+R” (mono.) If you are using more than one subwoofer, you may
decide whether to choose “L+R” (mono) or “Stereo” subwoofer modes depending on
your room setup and personal preference.
When the CR-1 is connected as shown in
this scenario, the operating modes and
behaviors are as follows:
Power: On and “Crossover Function”
switch: “On”
“Outputs to Subwoofers” are low-pass
ltered by the CR-1
“Outputs to Satellites” are high-pass
ltered by the CR-1
Power: On and Crossover Function
switch: “Bypass”
“Outputs to Subwoofers” pass signals
directly from the “Managed Bass Inputs”
“Outputs to Satellites” pass signals
directly from “Main Stereo Inputs”,
unltered (full-range signal passes XLR to
XLR *or* RCA to RCA only).
Power: O
Same as “Bypass” above.
IMPORTANT: WHEN THE CR1 IS OPERATING IN “BYPASS” MODE, THE
“SUBWOOFER OUTPUT MODE” SWITCH ON THE FRONT PANEL WILL HAVE
NO EFFECT AND THE MANAGED BASS SUBWOOFER SIGNAL FROM YOUR
HT RECEIVER OR PREAMP/PROCESSOR WILL BE PASSED THROUGH THE
CR1 WITH NO ALTERATION.
Page 18
IMPORTAN T
| CR-1
Page 19
SCENARIO 3 CONNECTION DIAGRAM:
LEFT
BALANCED
MAIN OUTPUTS
RIGHT
SOURCE A SOURCE B SOURCE C SOURCE D SOURCE E TAP E OUT
BALANCED
MAIN OUTPUTS
SOURCE INPUTS
Stereo Preamplier
PREAMP OUTPUTS
FRONT
SUB/LFE
DEDICATED HT LOUDSPEAKERS
CENTER
LEFT
SURROUND
OUTPUTS TO LOUDSPEAKERS
RIGHT
SURROUND
BALANCED
CR -1
MAIN
STEREO INPUTS
MAIN STEREO INPUTS
ACTIVE SUBWOOFER CROSSOVER
RIGHTLEF T
BALANCED
Unbalanced
L R L RRIGHTLEFT
OUTPUTS TO
SATELLITE
AMPLIFIER
BALANCED
OUTPUTS TO SATELLITE A MPLIFIER MANAGED BASS INPUTS
BALANCED
ONLY
STEREO
INPUTS
BALANCED
BALANCED
LEFT
(OR MONO)
BALANCED
Stereo or Mono
RIGHT
SURROUND CENTER
MANAGED BASS INPUTS
only feed subwoofer(s)
when crossover is bypassed.
SUBWOOFER/LFE OUTPUT
BALANCED
BALANCED
Stereo
Balanced
LEFT POWERED
SUBWOOFER
OUTPUTS TO LOUDSPEAKERS
LEFT
*
OUTPUTS TO
SUBWOOFER(S)
OUTPUTS TO SUBWOO FER(S)
OR
RIGHT
This device complies with part 15 of the FCC rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
CAN ICES-3(B)/NMB-3(B)
BALANCED
Isolated
Grounded
Unbalanced
RIGHT POWERED
SUBWOOFER
CR-1
Replace fuse with proper
type and value only.
Refer to manual.
FUSE
HT Receiver
CR-1 SERIAL NUMBER:
Warranty void if serial number is removed, altered or defaced.
C R -1
Balanced Connection
Unbalanced Connection
LEFT LOUDSPEAKER RIGHT LOUDSPEAKER
WARNING! TURN OFF THE CR-1 AND ALL OTHER EQUIPMENT IN THE
SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS!
|
CR-1
Stereo Amplier
LEFT & RIGHT LOUDSPEAKERS IN
2-CHANNEL MODE
(”Crossover Function” switch in “On” Position)
FRONT LEFT & RIGHT SPEAKERS IN
HOME THEATER MODE
(”Crossover Function” switch in “Bypass” Position)
WARNING
Page 19
Page 20
SCENARIO 1 SETUP GUIDE:
2-channel Subwoofer/Satellite System, Bass-Managed by the CR-1
Connect your CR-1 as shown in Scenario 1 Connection Diagram on page 15.
For many 2-channel audiophiles, it is intuitive to select a very low crossover
frequency, especially if the satellite (main) speakers are large and capable of
good low frequency extension on their own. Aer all, we have all been taught
that subwoofers should be integrated in a manner that they “disappear”
acoustically, and that low crossover frequencies are a good way to reach this goal.
Unfortunately, this advice is usually WRONG.
In light of the above, we will share some very important advice, borne
from extensive experience setting up subwoofer/satellite systems in the most
demanding applications. An unnecessarily low crossover point (40 Hz, for
example) wastes the potential benet of your subwoofer in most subwoofer/
satellite systems. e goal is to unburden your satellites as much as possible,
and to pass that low-frequency burden to your subwoofer. Done correctly, the
resulting system is more dynamic, more “open” at all frequencies, and will
exhibit a wider bandwidth at all listening levels. If you select a very low crossover
frequency, you will leave a lot of those performance gains behind.
To get maximum benet from the integration of a subwoofer (or subwoofers)
into your 2-channel audio system, we recommend crossover frequencies
between 60 Hz and 120 Hz, with 80 Hz being an excellent starting point
(and oen, a very good ending point). e CR-1 allows you to select crossover
frequencies outside this recommended range in the event of highly unusual
system setup requirements.
If you are worried that a higher crossover frequency will lead to easily
localizable bass or “disconnected bass”, stop worrying. e CR-1’s powerful
features allow for superior integration at any crossover frequency. It is this
precise integration that will truly make your subwoofer/satellite seamless and
your subwoofers truly “disappear” into the sound stage. e ultimate reward is a
remarkably open sound stage, with better imaging and much cleaner dynamics.
Really amazing low-frequency qualities will also be evident, with complete unity
between subwoofer and satellite outputs.
To begin setup, set the CR-1’s front panel controls as follows:
Power: “On”
Crossover Function: “On” (switch pushed “in” with NO red light)
Subwoofer Output Mode: “L+R” (mono sub output)
Subwoofer Frequency: 80 Hz (ideal for many systems)
Subwoofer Damping: “0”
Sub/Sat Balance: “0”
Satellite Damping: “0”
Satellite Frequency: 80 Hz (ideal for many systems)
Crossover Slope: 24 dB/Octave (preferred for most systems)
All Muting switches set to “Operate” (all switches “out” with NO red lights.)
Page 20
| CR-1
Page 21
Next, defeat all signal processing on your subwoofer. In other words, turn o
any on-board low-pass ltering and defeat any polarity or phase controls, and set
the subwoofer’s Level control to the middle position. We will rst set the CR-1
and then tweak the subwoofer’s controls.
Using familiar music with signicant mid-bass energy (frequency content
that occurs in the crossover region), listen to your system and adjust your
subwoofer’s Master Level control to match the level of the satellites. ere
should be a smooth audible transition from the mid-bass (from the satellites) into
the deep bass (from the subwoofer) with no particular emphasis in either band.
Later you can ne tune levels using the CR-1’s Sub/Sat Balance control.
Next, play the same music again at an elevated level to assess the dynamic
capability of your satellites. With the inclusion of the CR-1, your satellites should
exhibit increased dynamic headroom and the midrange should sound more
eortless and natural. If your satellites sound strained or exhibit distortion at
high levels, try increasing the crossover frequency for both the satellites and the
subwoofer (adjust them to the same frequency). If your satellites are particularly
small, a 100 Hz crossover frequency may be more appropriate.
If your crossover frequency needs to go above 120 Hz, other aspects of your
system may need adjusting, such as speaker placement in the room. Aer adjustment,
your system should sound open and dynamic at a variety of volume levels.
Other adjustments on the CR-1 and your powered subwoofer(s) make it
possible to dial in your system’s transition from the satellites to the subwoofer in
the crossover region and to get the subwoofers dialed in for your room’s acoustics.
A good, high-resolution, real-time analyzer is very helpful to adjust these controls,
but they can also be adjusted by ear.
A) Crossover Frequency (CR-1 front panel)
B) Crossover Slope (CR-1 front panel)
C) Damping (CR-1 front panel)
D) Polarity (on your powered subwoofer)
E) Phase (on your powered subwoofer)
F) E.L.F. Trim (on your Fathom or Gotham powered subwoofer)
G) A.R.O. (Automatic Room Optimization on your Fathom or
Gotham powered subwoofer)
Possible adjustments include splitting the crossover frequencies (a lower
crossover frequency for the subwoofer and a higher crossover frequency for
the satellites, to further remove excess bass energy) and “Damping” control
adjustments (essentially mild equalization near the crossover point.) Either
of these tweaks may necessitate trimming the overall level of the satellites or
subwoofer, which is easily accomplished via the Sub/Sat Balance control. If all of
this seems daunting, we recommend that you consult your
JL Audio dealer for setup assistance and service.
Resources will be available on the JL Audio website at www.jlaudio.com, on
the CR-1 product page. For detailed information about powered subwoofer setup,
you can also download the Fathom, Gotham or E-Sub Owner’s Manuals from the
JL Audio website. While these manuals are most applicable to JL Audio’s powered
subwoofers, they also include general information about placement and setup
that applies to all subwoofers.
|
CR-1
Page 21
Page 22
SCENARIO 2 SETUP GUIDE:
2-channel Subwoofer/Satellite System that is Bass-Managed by the CR-1 and also
shares active subwoofers with a separate multi-channel home theater system
For this setup discussion, we will assume that your separate home theater
system is already working and optimized using the subwoofers you will
share with the stereo system and the CR-1. Dedicated stereo speakers that are
completely separate from your Home eater system will be added, along with a
stereo preamp, a stereo amplier, and the CR-1.
Connect your CR-1 as shown in Scenario 2 Connection Diagram on page 17.
It is very helpful if your existing Home eater setup has resulted in
Subwoofer Level Controls set at a middle position (“0” on a JL Audio subwoofer’s
Master Level) and your home theater receiver or processor’s subwoofer output
level is also at a middle-range reference position. is will ensure easier
integration of your dedicated stereo system and the CR-1.
If you raise the existing Subwoofer Master Level (on the powered subwoofer)
to level match the two-channel system, you will need to LOWER the subwoofer
level in your home theater receiver or processor to compensate for this level shi.
Likewise, if you lower the Subwoofer Master Level to match the two-channel
system, you will need to RAISE the subwoofer level in your home theater receiver
or processor to compensate for that level shi. e goal is to nd a common
setting of the Subwoofer’s Master Level control that works well for both systems
– the home theater receiver or processor’s level control is used to oset any level
dierences that exist. e CR-1’s Sub/Sat Balance control is intended for ne
tuning rather than gross level osets.
First, you will set up the two-channel portion of the system, using the CR-1’s
controls. Use the same settings and follow the exact same procedures listed in
Setup Scenario 1 to set up this 2-channel mode.
Once you have completed the 2-channel setup and are happy with the
results, switch the CR-1 into “Bypass” mode via the front panel switch,
and conrm that your subwoofer level played through your home theater
receiver or processor is still correct. As mentioned above, your 2-channel
system’s subwoofer level will be determined only by the Subwoofer’s
Master Level control. Your HT receiver or processor’s subwoofer level will
adjust the output for multi-channel mode. If needed, adjust the hometheater mode’s subwoofer level via the HT receiver or processor.
Once the above is accomplished, your Home eater system should sound
normal when the CR-1 is in Bypass mode AND your two-channel subwoofer/
satellite system should sound fantastic as well. e CR-1 has successfully allowed
you to share subwoofers between two dierent systems with the push of one button.
Page 22
| CR-1
Page 23
SCENARIO 3 SETUP GUIDE:
2-channel Subwoofer/Satellite System that is Bass-Managed by the CR-1 and also
shares active subwoofers AND MAIN L-R SATELLITE SPEAKERS with a separate
multi-channel home theater system
For this setup discussion, we will assume that your separate home theater
system is already working and optimized using the subwoofers and main speaker
you will share with the two-channel system via the CR-1. is setup assumes
that the home theater’s main speakers are driven from an outboard, dedicated
amplier. A stereo preamplier and the CR-1 will be added to the system to
create a dedicated two-channel mode.
Connect your CR-1 as shown in Scenario 3 Connection Diagram on page 19.
It is very helpful if your existing Home eater setup has resulted in
Subwoofer Level Controls set at a middle position (“0” on a JL Audio subwoofer’s
“Master Level”) and your home theater receiver or processor’s subwoofer
output level is also at a middle-range reference position. is will ensure easier
integration of your dedicated stereo system and the CR-1.
For your Home eater System, if you raise the existing Subwoofer Master
Level (on the powered subwoofer) to level match the 2-channel system, you will
need to LOWER the subwoofer level in your home theater receiver or processor
to compensate for this level shi. Likewise, if you lower the Subwoofer Master
Level to match the 2-channel system, you will need to RAISE the subwoofer level
in your home theater receiver or processor to compensate for that level shi.
e goal is to nd a common setting of the Subwoofer’s Master Level control
that works well for both systems – the home theater receiver or processor’s
level control is used to oset any level dierences that exist. e CR-1’s Sub/Sat
Balance control is intended for ne tuning rather than gross level osets.
First, you will set up the two-channel portion of the system, using the CR-1’s
controls. Use the same settings and follow the exact same procedures listed in
Setup Scenario 1 to set up this two-channel mode.
Once you have completed the two-channel setup and are happy with the
results, switch the CR-1 into “Bypass” mode via the front panel switch, and
conrm that your subwoofer level and Le/Right satellite levels played through
your home theater receiver or processor is still correct. As mentioned above,
your 2-channel system’s sub level will be determined only by the Subwoofer’s
Master Level control. Your HT receiver or processor’s subwoofer level will adjust
the output for multi-channel mode. If needed, adjust the home-theater mode’s
subwoofer level via the HT receiver or processor. You may also need to use the
HT receiver or processor’s Le/Center/Right/Le Surround/Right Surround
Level controls to properly rebalance the shared Le and Right speakers with the
home theater system.
Once the above is accomplished, your Home eater system should sound
normal when the CR-1 is in Bypass mode AND your two-channel subwoofer/
satellite system should sound fantastic as well. e CR-1 has successfully allowed
you to share subwoofers between two dierent systems with the push of one button.
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CR-1
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FREQUENTLY ASKED QUESTIONS
How are the CR-1’s balanced connection wired?
All CR-1 balanced connectors are congured according to Audio Engineering
Society recommendations for balanced signal cables as follows:
XLR Connection
Pin 1: Chassis Ground
Pin 2: Positive
Pin 3: Negative
TRS connection:
Tip: Positive
Ring: Negative
Sleeve: Chassis Ground
Will my electric bill be high if I leave the CR-1 on all the time to
maximize its delity?
When turned “on” the CR-1 draws 26 watts of power, whether it is idling or
receiving signals. e CR-1 only requires a short period of warm up to arrive at full
performance (2-3 minutes), and it can be used during the warm-up period, if desired.
Should I unplug my CR-1 during a thunderstorm or extended absence?
During a storm, or extended absence from your home, it is a good idea to
unplug all of your audio / video components to prevent damage from unexpected
storms or adverse power line conditions.
How should I clean the CR-1?
For routine cleaning, the CR-1 should be dusted and wiped with a dry, non-abrasive,
microber cloth. Do not use water to clean the CR-1, nor any harsh chemicals.
TROUBLESHOOTING
CR-1 is plugged into a power outlet but will not turn on (no lights at all.)
What should I do?
1. Try plugging the CR-1’s power cord into a known-good AC power outlet.
2. If the above does not help, remove the Fuse cover on the rear of the CR-1 and
see if the fuse is blown. If the fuse is blown, contact JL Audio’s Home Technical
Support Dept.
My system has “hum” or power line noise. What should I do?
1. On the CR-1’s rear panel, try changing the setting of the Ground Li switch.
Note that this switch is only eective if you are using XLR (or TRS) balanced
cables - the Ground Li switch does NOT aect the RCA jacks.
2. Turn o all audio equipment. Disconnect the components directly ahead of the
CR-1. Turn on the CR-1 and all components aer it in the signal chain. If the
noise stops, the noise source is before the CR-1. en add one component back
to the system at a time until you nd the source of the noise.
3. If neither solution above works, try changing cable types (from XLR to RCA,
or vice versa.) Some combinations of components may have less noise with an
alternate connection type.
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| CR-1
Page 25
LIMITED WARRANTY / SERVICE INFORMATION
JL AUDIO warrants this product to be free of defects in materials and
workmanship for a period of three (3) years from the original date of purchase.
Damage caused by the following is not covered under warranty: accident,
misuse, abuse, product modication or neglect, failure to follow installation
instructions, unauthorized repair attempts, misrepresentations by the seller. is
warranty does not cover incidental or consequential damages and does not cover
the cost of removing or reinstalling the unit(s) or shipping the unit(s) to JL Audio
for service. Cosmetic damage due to accident or normal wear and tear is not
covered under warranty.
is warranty is not transferable and applies only to the original purchaser
of the product from an authorized JL AUDIO dealer. Warranty is voided if the
factory-applied product serial number is removed or defaced.
Should service be necessary under this warranty for any reason due to
manufacturing defect or malfunction, JL AUDIO will, at its discretion, repair or
replace the defective product with new or remanufactured product at no charge.
Any applicable implied warranties are limited in duration to the period of
the express warranty as provided herein beginning with the date of the original
purchase at retail, and no warranties, whether express or implied, shall apply
to this product thereaer. Some states do not allow limitations on implied
warranties, therefore these exclusions may not apply to you. is warranty gives
you specic legal rights, and you may also have other rights which vary from
state to state.
WARNING
WARNING: THIS PRODUCT CONTAINS NO USERSERVICEABLE PARTS.
PRODUCT IN WHICH DISASSEMBLY, REPAIR AND/OR MODIFICATION
HAS BEEN ATTEMPTED BY UNAUTHORIZED PARTIES WILL NOT BE
COVERED UNDER WARRANTY.
If you need service on your JL AUDIO product:
All warranty returns should be sent to JL AUDIO freight prepaid through
an authorized JL AUDIO dealer and must be accompanied by proof of purchase
(a copy of the original sales receipt.) Direct returns from consumers or nonauthorized dealers will be refused unless specically authorized by JL AUDIO
with a valid return authorization number. Warranty expiration on products
returned without proof of purchase will be determined from the manufacturing
date code. Coverage may be invalidated as this date is previous to purchase date.
Return only defective components. Non-defective items received will be returned
freight-collect. Customer is responsible for shipping charges and insurance in
sending the product to JL AUDIO. Freight damage on returns is not covered
under warranty. Always include proof of purchase (sales receipt).
For Service Information in the U.S.A. please call:
JL Audio customer service:
(954) 443-1100 during normal business hours (Eastern Time)
JL Audio, Inc • 10369 North Commerce Parkway, Miramar, FL 33025
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CR-1
International Warranties:
Products purchased outside the United States of America are covered only by that
country’s distributor and not by JL Audio, Inc.
Page 25
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INSTALLATION NOTES
Use this diagram to document your CR-1’s inputs/outputs and switch/control positions.
Page 26
| CR-1
Page 27
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CR-1
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FE ATURES
Power Modes:
O/On, selectable via front panel switch
Crossover Function:
Bypass or On,
selectable via front panel switch
Subwoofer Output Modes:
Mono L+R or Stereo,
selectable via front panel switch
Crossover Frequency Range:
30 Hz – 150 Hz, variable with
independent high-pass and low-pass lter
frequency controls on front panel
Crossover Slopes:
12 dB/octave or 24 dB/octave, LinkwitzRiley, selectable via front panel switch
Subwoofer/Satellite Balance Control:
+/– 12 dB, fully variable via front panel knob
Filter Damping Controls:
Q: 0.3 - 1.4 @ 12 dB/octave,
via front panel knob
Q: 0.16 - 4.0 @ 24 dB/octave,
via front panel knob
For either slope, Q = 0.5
at top dead center “0” mark
Output Muting:
independent for each output, via front
panel push-button switches
Ground Li (Balanced Connections):
Isolated/Grounded, via rear panel switch
Specifications CR-1
Maximum Input Voltage: 8 Vrms (+18 dBv)
Input Impedance:
Maximum Output Voltage: 8 Vrms (+18 dBv)
Output Impedance:
THD + Noise:
Signal to Noise Ratio: >115 dB, referred to rated out put voltage
Channel Separation: 80 dB at 1 kHz, t ypical
Low Pass Frequency Response: +0, -1 dB from 5 Hz to 1/4 of lter freq uency
High Pass Frequency Response: +0, -1 dB from 4x lte r frequency to 80 kH z
Power Consumption: 3 0 Watts (typical , with or without signa l)
Mains Voltage (Frequency):
Table-Top Dimensions: (H) Height x (W) Width x (D) Depth
Rack-Mount Dimensions: (H) Height x (W) Width x (D) Depth
Unbalanced: 50 kΩ
Balanced: 20 k Ω
Unbalanced: 150 Ω
Balanced: 3 00 Ω
< 0.002% at 8 Vrms /10 kΩ
20 Hz - 20 kHz, 9 0 kHz bandwidth
120V (60 Hz) or 230/240V (50 Hz or 6 0 Hz),
factor y-set for desti nation country (see b ack panel of CR-1)
3.80 in x 17.40 in x 15.67 in
97 mm x 441 mm x 398 mm
3.46 in x 19.07 in x 15.67 in
88 mm x 484 m m x 398 mm
TOP VIEW
BACK PANEL
FRONT PANEL
“JL Audio”, “Ahead of the Cur ve” and the JL Audio l ogo are register ed trademark s of JL Audio, Inc. • ©2016 JLAudio, Inc. • U.S. PATENTS: #5,734,73 4 #5,949,898
#6,118,884 #6,229,902 #6,243,479 #6,294,959 #6,501,844 #6,496,590 #6,441,685 #5,687,247 #6,219,431 #6,625,292 #D472,891 #D480,709 • Other U.S. & Foreign
patents p ending. For mo re detailed inf ormation ple ase visit us onlin e at www.jlaudio.com. Due to our policy of continuous product development, all specifications
are subject to change without notice.
www.jlaudio.com
SKU#97262 04 -07-16
10369 North Commerce Parkway • Miramar, Florida • 33025 • USA
Printed in China
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