CLS-10 / 12 Subwoofer Controls and Connections
which can be far more demanding than the vast majority of musical recordings. As noted above, enter
your receiver or surround processor setup menu and select Small for the speakers. Then enter the
bass-management section of the menu and set the crossover to between 100 and 120Hz for the
Nucleus® Micro or between 80 and 100Hz for the A’Diva®. These ranges reflect satellite variables of
wall-mounting (with bass reinforcement) and free-air placement (minimized bass extension). Be sure to
set the electronics bass management to Yes for subwoofer. Now connect the subwoofer using an
RCA-type cable from the Subwoofer/LFE output of your receiver or surround processor. Then set the
CLS-10 / 12’s crossover bypass switch to Bypass, which eliminates the internal crossover and makes your
electronics’ bass management settings the default mode.
WARNING:
Running compact speakers contrary to these filtering instructions (i.e., full range) can cause
damage to satellite speakers made by us or other manufacturers and may not be covered under war-
ranty.
In spite of our recommendation above, if you wish to have your satellite speakers reproduce full- range
bass—and they are capable of doing so—set your receiver or surround processor’s speaker size menu
choice to Large. Set the Subwoofer Yes/No to Yes in the electronics’ speaker settings menu. Next,
consult the Owner’s Manual of your speakers for their frequency response specification. This will be
given as two figures (for example, “55Hz to 20,000Hz +/-3dB”). The lower figure describes the
speaker’s bass extension. Because a subwoofer, by definition, reproduces bass below the main speaker,
set the CLS-10 / 12’s crossover frequency control to 55Hz in our example. Remember that a –3dB spec
already includes 3dB of rolloff. Use such a figure merely as a starting place for the crossover control.
Fine-tune by ear. You might end up at 70Hz or 40Hz depending on the real-world performance of the
satellite speakers and how they and the subwoofer interact with the room.
High-Level Inputs/Outputs:
There’s a built-in 100Hz, 6dB / octave passive crossover between the
High-Level inputs and outputs of the CLS-10 / 12. It allows for limited bass management at speaker
level as detailed below. In systems in which you’d like to send a full-range signal to the satellite
speakers and still enjoy the subwoofer using the High-Level connections, connect TWO SETS of speaker
cables to the speaker output terminals of your receiver or amplifier. Run one set to the High Level In
terminals of your CLS-10 / 12 and the second set directly to your stereo speakers. In this manner, you’ll
bypass the CLS-10 / 12’s built-in High Pass 100Hz crossover. Use care in this instance because you’ll be
driving the satellite speakers full range, risking overdriving their woofers and/or clipping the amplifier.
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