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CR-1
“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
Left and Right channels), or whether CR-1 sums independent signals to mono.
In “Stereo” mode, the Left Managed Bass Input corresponds directly to the Left
Subwoofer Output. The same is true for the Right channel. In “MONO” mode
only the “Left (or Mono)” channel is active.
Outputs to Satellite Amplifier
The “Outputs to Satellite Amplifier” are the primary stereo outputs to the
amplifier that drives your Left and Right stereo speakers. These outputs carry
the high-pass filtered signal (frequencies ABOVE the crossover frequency) to the
satellites. Choose the output type that matches the inputs on your main speaker
amplifier. If the amplifier offers both, balanced is the preferred method (XLR or TRS.)
The balanced XLR and TRS outputs share circuitry and both should NOT be
used at the same time (choose only one balanced output type). The XLR and RCA
outputs have separate buffer amps and can be used at the same time, if desired.
Outputs to Subwoofers
These are the primary outputs to one or more subwoofers, carrying the low-
passed signal (frequencies BELOW the crossover frequency) to the subwoofers.
As with the “Outputs to Satellite Amplifier” (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 buffer amps and can all be
used at the same time to feed multiple subwoofers.
Ground Lift Switch
The Ground Lift Switch “lifts” (isolates) the Pin 1 (shield) ground of the XLR
and TRS connectors from chassis ground in the CR-1. This 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. This switch will have no effect
on unbalanced (RCA) connections.
Fuse Holder
The 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
The 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.
Summary of Contents for CR-1
Page 1: ...Owner s Manual Active Subwoofer Crossover ...
Page 27: ...Page 27 CR 1 ...
