Mackie 8-submaster mixer Connectors, A BIT MORE ON MIX-B/FLIP, Fig, Mic, line, input, Fader, Channel, (RECORD), (HI shown), Multi-trackDeck, 1 LO & HI VARIABLE

Multi-track Deck

(PLAYBACK)

Additional mic or line input

1 LO & HI VARIABLE(HI shown)Only LO/HI Variable: Boost/Cut

Fig. 3

The LO and HI sections of the EQ are shelving equalizers, with a family of curves shown in Figure 3. As you can see, shelving EQs lift or lower the entire range of frequencies above or

(Figure 5). When FLIP is up, the channel is fed MIC/LINE and MIX-B gets TAPE. That way, you can use MIX-B to monitor the signal as it comes back from the recorder. This is the normal mode for tracking and overdubbing.

In the down position, the TAPE return (the output signal from the corresponding track of your recorder) is fed to the channel fader (Fig- ure 6). When FLIP is down, the channel input is TAPE and MIX-B receives MIC/LINE. That enables you to use each channel’s MIC/LINE input for another input during mix down. Thus down is the normal position for mixing.

For PA, leave the FLIP switch up.

GENERAL

INFO

below a certain point. Most tone controls on stereos are shelving EQs, often set at 100Hz for the bass and 10kHz for the treble. The LO EQ on the 8•Bus is at 80Hz and the HI is at 12kHz.

The EQ IN/OUT SWITCH will completely remove the EQ circuit from the channels signal path when disengaged, and activate the EQ when engaged.

When the EQ section is split between the channel strip and Mix B, the EQ IN/OUT switch will only shut off the HI MID and LO MID bands. The LOW CUT filter (also known as a high-

pass filter) reduces everything below about 100Hz. 75Hz is -3dB, and the lower the frequency, the greater the attenuation. The slope of the filter is 18dB/octave.

Mic	24
line
or	CHANNEL
input		MIC/LINE
		LINE IN
	Channel
	Input
Control Room	Speaker
Monitors	Section
	U
		L/R MIX
	OO +15
	CNTRL RM
	U
		MIX-B
	OO +15	TAPE
	STUDIO

EXTERNAL

MONO

SPEAKERS SOURCE

dB
10
5
U	1-2
	3-4
5
	5-6
10
	7-8
20
	L/R
30	MIX
40
50
60
OO

Channel

Fader
Channel	Channel
Mix B/Monitor	Tape Input
	TAPE IN
PAN	24

LR

U

LEVEL

OO +15

HI/LO EQ

MIX-B

MONITOR SHIFT

OUTPUT

INPUT

SOURCE

Multi-track Deck(RECORD)

Connectors

If you’ve used a Mackie CR-1604 or MicroSeries 1202, you’re familiar with the various kinds of connectors used with a mixing board. If you’re new to this whole thing, review the drawings in Figure 4 on Page 22. They’re also described in detail in Appendix A on page 48 of this manual.

A BIT MORE ON MIX-B/FLIP

In Section 2, we described FLIP’s use during tracking and mixdown. Before you actually get involved with recording, we’d like to spring a couple of block diagrams on you that may clarify things further.

The switch labeled FLIP selects the input that is actually fed into the channel fader (and the MIX-B control).

As the label indicates, the MIC/LINE input (after Mic/Line preamp) is fed to the channel fader when the FLIP switch is in the up position

Figure 5: FLIP/MIX-B signal path during tracking (“flip” switch up)

dB
10
5
U	1-2
	3-4
5
	5-6
10
	7-8
20
	L/R
30	MIX

TAPE IN	40
24	50
	60
	OO

Channel	Channel	Mixdown Deck
Tape Input	Fader
Channel	Channel
Input	Mix B/Monitor

PAN

LR

U

24				LEVEL
		OO	+15
CHANNEL
		HI/LO EQ
		MIX-B
		MONITOR		SHIFT
	MIC/LINE	OUTPUT
			INPUT
	LINE IN			SOURCE

Figure 6: FLIP/MIX-B signal path during mixdown showing additional input (“flip” switch down)

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