Mirage Loudspeakers BPS-400 owner manual Pulse Width Modulation, Low-LevelRCA Input Jacks

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Pulse Width Modulation

Your new BPS-400 incorporates a revolutionary new power amplifier technology called Pulse Width Modulation (PWM).

The 400 watt PWM amplifier used in the BPS-400 has much higher efficiency (90%) than typical analog amplifiers (20%) and thus generates much less heat (typically 1/5).

The PWM amplifier can generate much higher power output than comparable analog amplifiers (400W vs 100-200W).

The 400 watt PWM amplifier is capable of generating very high sound pressure levels 125dB @ 18Hz.

Low-Level RCA Input Jacks

The RCA input jacks allow you to connect your subwoofer to any of the following:

(a)Pre-amplifier outputs

(b)Audio/Video processor outputs

(c)The "subwoofer output" from an Audio/Video receiver

(d)Any integrated receiver with pre-out facilities

(e)The audio output from your stereo television or computer sound cards

(f)An External Active Crossover.

See "Subwoofer Connection to your Audio/Video System".

OPERATING CONTROLS

Subwoofer Level Control

This rotary control adjusts the output level of your Mirage subwoofer and should be used to balance the level of the subwoofer with that on your main/satellite speakers. See “Set-up Calibration”.

LP Filter (Low-pass) Control

This rotary control adjusts the high frequency roll-off of the subwoofer. Continuously variable from 50Hz to 100Hz, it is used to precisely match the subwoofer bass reproduction with that of your main/satellite speakers. See “Set-up Calibration”.

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