Amplifier Settings
Signal Input and Output Configurations
The input section of the amplifier consists of a phase switch that sets the output configuration, subsonic switch, gain controls, low pass crossovers controls, Bass Boost, and RCA inputs.. The input section makes it easy to adapt this amplifier to most system configurations..
Input Gain
These Orion amplifiers have level adjustments to allow for easy inte- gration with any source unit.. The input sensitivity can be adjusted from 200mV to 8V.. Refer to Testing the System and Adjusting the Sound of the System sections of this manual for detailed instructions on setting the gain..
Subsonic Filter
Mostly used with vented designs because of the port tuning frequen- cy, the speaker can be destroyed by very little power being applied to it.. This means you need to use a subsonic filter with a vented design or risk speaker damage..
Subsonic filters can also be called an infrasonic filter, a subsonic fil- ter cuts off extremely low bass (below the range of human hearing) that many speakers cannot effectively reproduce, thereby making the amp’s power supply and output devices, and the speaker, more efficient..
Adjusting Bass Boost
Bass Boost maximizes the performance of a subwoofer and allows for continuous adjustment of low frequency boost on the rear channels.. Bass Boost can be adjusted from 0dB to 18dB of boost centered at 45Hz.. Initially the Q is very low (wide).. As Boost is added, the Q rises (narrows).. This allows the amplifier to overcome acoustic deficiencies in your vehicle.. The type of enclosure used, the
WARNING! Exercise caution when setting Bass Boost.. Maximum boost can potentially cause woofer damage due to
Infinite Baffle Example High-Pass Set at 30Hz
By removing low frequency signal that the woofer cannot produce, the woofer can play its capable range louder.. The first example is an infinite baffle situation.. The first graph displays the frequency response of a
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