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Automatic Power Circuitry: This feature activates your subwoofer whenever it senses a signal (any music source)
coming from your amplifi er. The same circuit will automatically shut power off to your subwoofer about ten minutes
after you turn off your main amplifi er. This means you may always leave your subwoofer’s power switch on.
Level Control: A precision level control is built into your subwoofer to enable volume adjustment of the bass
frequencies. Set the level according to your personal preferences from signifi cant bass response, as might be
preferred in home theater listening, to the softer, more natural presence that might be the choice for enjoying
musical programming.
Crossover Point Control: Phase Technology Powered Subwoofers also feature internal crossover networks designed
to enable the subs to be acoustically matched to virtually any pair of full-range speakers.
The adjustable crossover control on the subwoofer’s back panel should be set near the low-frequency roll-off point
of our front speakers. The specifi cations listed for your main speakers will generally specify this point as a “-3
dB” frequency. It’s important to trust your ears when setting this control. Too high a setting will exaggerate bass
response, while too low a setting could produce weak bass.
When using low-level connections on certain Phase Technology premium subwoofers, the network controls both the
low-pass and high-pass crossover points with matched slopes for uniform frequency response. (Please refer to the
specifi cations included with your subwoofer.)
Servo Control: This innovative feature protects your Phase Technology powered subwoofer from being over-driven
and, thus, producing unnecessary distortion. It automatically limits the subwoofer’s loudness and excessive
movement of the speaker cone in the unlikely event that the demands of your program material exceed the capacity
of the subwoofer’s internal amplifi er and speaker.
Phase Control: This feature enables setting the subwoofer’s phase at two positions, which may be labeled “+” or
“-” or “0੦” or “180੦.” We suggest starting with the control at the “+” or “0੦” position with someone else adjusting
the control while you listen from where you normally sit. One of the settings will produce a fuller, more robust bass
response, and the Phase Control should be left in that position.
SPECIAL PRODUCT FEATURES
Adjusting Variable-Axis, Soft-Dome Tweeters
Some Phase Technology speakers feature the company’s acclaimed variable-axis soft-dome tweeter (refer to the
model specifi cations included with your speakers) offering even greater latitude in selecting speaker locations and
listening positions.
This revolutionary tweeter can be adjusted by hand to direct the high frequencies towards a specifi c listening area
for optimal tonal balance and channel separation. This enables owners of these Phase Technology models to place
the speakers where they look or fi t best and then aim the tweeter for best effect.
When adjusting these units, be careful to press on the outer rims only, avoiding contact with the center, or soft
dome, of the speaker. A series of adjustments may be necessary to achieve the ideal clarity and smoothness of the
high frequencies that the variable-axis soft-dome tweeter was designed to present.
Bi-Wired Connections
Some Phase Technology premium audiophile speakers are equipped for be-wiring, with four speaker terminals
instead of two. This may enhance speaker performance by using an additional pair of speaker cables.
In order to bi-wire these speakers, remove the gold-plated strips between the speaker terminals and connect two
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