Alphasonik PMA1000HCE, PMA640HCE, PMA600HCE owner manual Deepest bass notes are amplified

C	9. Variable Low-Pass filter (50Hz – 250Hz): For use as a dedicated subwoofer
O	channel, set filter switch to “LPF”. Adjust variable crossover frequency with
N	control as desired. The amplifier input circuit filters out everything above 50Hz…
T	..250Hz (dependent on the adjustment of the frequency control), so only the
R	deepest bass notes are amplified.
O
L	10. Variable High-Pass Filter (50Hz – 250Hz): For use as a dedicated mid high
S	range channel, set filter switch to “HPF”. The input out all frequencies below

&50Hz…..250Hz.

F	11. Variable Subsonic Filter (20Hz ~ 60Hz)
U
N	12. Phase Shift Switch (0 And 180 Degrees): allows you to change the phase of
C	your subwoofer from 0 to 180 degrees to help compensate for timing difference
T	between drivers
I	13. Low level Input RCA Jacks: These inputs are for signal cables from the
O
N	source unit, always use high shielded RCA cables.
S	14. Line Out: The Line Out allows you to build multiple amplifier systems without
	having to use splitter cords to distribute the signal. Now it is a matter of bringing
	one set of RCA’S into the first amplifier, then using the LINE OUT RCA jacks as
	the feed to the next amplifier.
	15. Remote Digital Voltmeter- Fig. 1
		This LCD indicates the range from 10 volts
		to 15 volts.
		The LCD shows "LO" for 10 voltsbelow and
		"HI" for 15.5 volts over.

16.(Optional) Bass Boost Knob: The remote bass boost knob works in con- junction with the amplifiers bass knob.

HOUR METER - The hour meter is designed to provide the user with actual toal running time for the unit. Each number represents one hour of operation. (Fig 2)

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