Velodyne Chrysalis PHOTON-8, User Manual

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Photon Series Manual

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Your new subwoofer is equipped with speaker-level and line-level inputs. Use the LINE LEVEL jacks when connecting your subwoofer to a
pre-amp, signal processor, line-level crossover or receiver with pre-amp level outputs. The SPEAKER LEVEL jacks connect directly to the
speaker outputs of any amplifier, integrated amplifier or receiver. Your amplifier section will notice no additional loading effects when you use
these inputs due to their very high impedance.

Important!!!

Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously!

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This control allows you to balance the output from the subwoofer to the main speakers in your system. This control should be set to achieve
similar output level from both the main speakers and subwoofer when listening to music. A good starting point for the volume control is three
or four dots from minimum.

Warning: 

Some manufacturers preset their receivers with the Sub-Out channel signal at a minimum level. It is very important to verify that your receiver
Sub-Out channel is set to the same output level as your front right and left channels. Refer to your receiver manual for the individual channel level
adjustment procedure. If your receiver Sub-Out channel is set too low, the subwoofer may appear to have a weak output, it may sound noisy or
distorted, and the Auto On/Off feature may not operate properly.

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All inputs sum the left and right channels together, with the resulting signal passing 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 120 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 80 Hz.

A bypass switch is also provided if you wish to use an external crossover.

If you are not using an external crossover, we recommend that you

use the one provided within the unit for optimum performance! 

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This control allows you to “reverse” the phase of the subwoofer’s output signal 180° to correct for any possible mismatch and resulting
cancellation between the subwoofer and your main speakers/amplifier. To adjust, simply listen to the system with music playing. Then move
the switch from one position to the other and listen for a change in mid-bass frequency output. The correct position will have a greater
amount of apparent mid-bass frequency output.

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This switch allows the internal crossover circuitry to be removed from the signal path. This is required in certain installations which route
the signal through external processors with a crossover circuit of their own, such as the new digital units. Simply move the switch to

SUBWOOFER DIRECT

to disengage the built-in crossover. For all other installations which do not have a separate electronic

crossover, we recommend you leave the switch set to 

INTERNAL X-OVER

to provide optimum performance.