Velodyne EQ-Max Series - Manual (Page 13)

rear Panel ConneCtions — DetaileD eXPlanation
your new subwoofer is equipped with both speaker-level and line-level inputs. Use the RCA/Phono type “INPUT” jacks when connecting your
subwoofer to a pre-amp, signal processor, or line-level crossover. The “SPeAKeR leVel INPUT” jacks connect directly to the speaker
outputs of an integrated amplifier or receiver. your amplifier section will notice no additional loading effects when you use these inputs
because of their high impedance.
Note: Do not use both the RCA/Phono “INPUT” connections and “SPEAKER LEVEL INPUT” connections simultaneously.
Low-Pass Crossover
both sets of inputs sum the left and right channels together and the resulting signal is passed through an adjustable low-pass crossover
before being amplified. The crossover control allows you to adjust the upper limit of the subwoofer’s frequency response from 40 to 135 Hz.
The subwoofer’s response will begin rolling off above the frequency you set this control to.
you should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer to the main speakers in your system.
If your main speakers are smaller units with limited low frequency output, you may wish to choose a higher frequency (such as 100-120 Hz)
than you would with larger speakers which have greater low frequency output. With larger speakers, you might start with this control set
lower, such as 70 Hz.
Subwoofer Direct
Subwoofer Direct is a setting on the low-pass crossover knob and will allow frequencies up to 135 Hz into the subwoofer. See below for a
more detailed explanation of this feature.
reCeiVer/ProCessor subWoofer outPuts
your Velodyne subwoofer is designed to operate using the full range audio signal for input when using our built-in crossover. Many home
theater processors/receivers (Dolby Digital™, DTS™, THX™) have a “subwoofer out” jack (sometimes labeled “lFe”) that is internally filtered,
settable at the receiver/processor, and designed to be used with a powered subwoofer. In some installations, it may be beneficial to use
boTH the Velodyne crossover and the receiver/processor crossover, resulting in a steeper ultimate crossover slope. In some rare cases,
combining both an external crossover and the one internal to the subwoofer may result in low output and increased noise. In these
installations you may need to bypass the crossover in either the processor or your eq-Max subwoofer, or simply setting one crossover to
a higher frequency (such as 120 Hz) will restore maximum performance.
(Refer to Figure 4 Line-Level Subwoofer Connection Diagram and Figure 5 Speaker-Level Subwoofer Connection Diagram, pages 11
and 12 for connection diagrams.)
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EQ-Max User’s Manual
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