Mackie PPM1012 owner manual LPF Low-Pass-Filter, Mono OUT, Most active subwoofers have their own

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54. LPF (Low-Pass-Filter)

PPM1012

												POWER
								2 X 800W PROFESSIONAL POWERED MIXER
					MAIN EQUALIZER							EQ ASSIGN
												MAIN
												MON 2
		15										46
												15
44		10										10
		5										5
		5										5
		0										0
		10										10
		15										15
			63	125	250	500	1K		2K	4K	8K	16K
					MON 1 EQUALIZER
z		15										15
45		10										10
		0										0
		5										5
		5										5
		10										10
		15										15
			63	125	250	500	1K		2K	4K	8K	16K
				61				01	PLATE REVERB		13	CHORUS
								02	VOCAL PLATE		14	CHORUS + REVERB
								03	WARM ROOM		15	DOUBLER
		FX 1		SIG/OL	FX 2		SIG/OL	04	BRIGHT ROOM		16	TAPE SLAP
								05	WARM LOUNGE		17	DLY 1 BRIGHT (350ms)
60			U			U		06	SMALL STAGE		18	DLY 1 WARM (300ms)
								07	WARM THEATER		19	DLY 2 BRIGHT (250ms)
								08	BRIGHT STAGE		20	DLY 2 WARM (200ms)
								09	WARM HALL		21	DLY 3 BRIGHT (175ms)
								10	CONCERT HALL		22	DLY 3 WARM (150ms)
		OO	+15		OO	+15		11	CATHEDRAL		23	CHORUS + DLY (300ms)
	SEND MASTER				SEND MASTER			12	GATED REVERB		24	REVERB + DLY (200ms)
62									51		TAP TO EDIT52U
									BREAK
63	TAP				TAP				MUTES
	DELAY				DELAY							OO +20
									CH 1-12
												TAPE IN
									FX 1			FX 1
									TO MON 1			TO MON 2
64	INT FX				INT FX					U		U
	MUTE				MUTE				OO	+15		OO +15

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PHANTOM

POWER AMP
	A			B 47
	LIMITER
	MAIN
	METERS
	0dB = 0dBu
			OL
		15
		10
		6			48
		3
4
		0
		2
		7
		10
		20
		30
	L			R
LEVEL				SOLO49
SET
				RUDE
				50
POWER AMP
	MODE
MON 1				MON 2
MAINS				MON 1

A(L)STEREOB(R)53

MAIN

LPF

12054

100 180

75Hz 200Hz

MONO OUT

55

OO MAX

Press this switch in to add a low-pass filter to the line-level mono outputs [17]. It turns them into line- level subwoofer outputs that play the low frequency range below the frequency setting of the LPF control knob.

Most active subwoofers have their own

crossover, and you should keep the LPF switch off in these cases. They usually

accept the full frequency range, and their crossover filters out the unused mids and highs.

If you want to run an external power amplifier with a passive subwoofer, connect the mono output to the amplifier's line-level input. Press the LPF switch in, and adjust the frequency knob to suit your subwoofer. For example, if your sub is still good out to 150 Hz, then set the frequency knob a little higher. The amplifier will then just receive the lows, and will not have to waste energy and reserves powering the mids and highs.

When LPF is engaged, the adjacent LED will light as a reminder. The LPF frequency is adjustable from 75 Hz to 200 Hz, with 100 Hz straight up.

Whatever you use the mono outputs for, remember that the mono out knob [55] allows you to balance the level compared to the main left and right outputs [16] and speaker-level outputs [3].

FX RTN 1

dB 10

5

U

5

10

20 41 30

SOLO

40

50

60

OO

57

FX RTN 2

dB 10

5

U

5

10

20

30

SOLO

40

50

60

OO

57

MON 1

dB 10

5

U

5

10

20

30

SOLO

40

50

60

OO

58

MON 2

dB 10

5

U

5

10

20

30

SOLO

40

50

60

OO

58

MAIN

dB 10

5

U

5

10

20

30

40

50

60

OO

59

The low pass filter only affects the mono line-level outputs. The main outputs and the internal ampli- fiers still receive the full frequency range.

55. MONO OUT

This knob allows you to adjust the level of the mono line-level outputs [17]. Adjust it to make your powered subwoofer, or mono loudspeaker match the level of the other loudspeakers in your system.

The mono output can be the full frequency range to run a mono PA for example, or just the low frequen- cies to run a subwoofer if the LPF [54] is engaged. Either way, this mono out control will let you adjust the level.

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PPM1012