Earthquake Sound BP112 - Manual (Page 5)

www.earthquakesound.com Specifications Are Subject To Change Without Notice
Phase Control: The phase control is a switch located on the panel with the
electrical connections. This switch will reverse the phase of BP112's output with
respect to its input. When installing BP112 with an existing factory or aftermarket
system, depending on BP112’s location in the vehicle and the distance between
it and the other speakers in the car, reversing the phase (by moving the phase
switch) may produce a discernable increase or decrease in the amount of upper
bass reproduced. Although the position that yields the most upper bass is
technically correct, you may choose the position that better suits your taste.
Crossover: The crossover control adjusts the amount of high-frequency
information present in BP112’s output.
Power LED: The power LED will glow red to indicate that BP112 is operational.
Thermal Protection LEDs: The Thermal/Protection LEDs will glow green when
the protection circuit has determined that the woofer has reached maximum
excursion and power. BP112’s woofer has been modified to provide maximum
performance, monitor the Thermal LED while you are tuning BP112. When
BP112 is properly tuned the servo LED should light momentarily during high-
level bass transients. Avoid adjustments that cause the LED to remain lit for
extended periods.
TUNING BP112
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