Mackie M2600 POWER, POWER CORD

What’s that? Why doesn’t the

fan just go fast all the time?

Well, if it did, you might actu-

ally hear it whirring during

your quiet moments (there are quiet moments in your life, aren’t there?). While this whirring would

be of no concern in most live-sound situations, it could become annoying in a control room environment. So, when the M•2600 is not working hard, the fan goes slow; when the music gets loud and puts the amp to work, the fan goes faster, and faster still if the heatsink temperature keeps rising.

POWER

To turn on the amplifier, push the top half of the POWER switch. It clicks into place and a soothing green light adjacent to it glows. To turn the amp off, push the lower half. It’ll click again and the green light will extinguish.

When you power up the M•2600, an in-rush limiting circuit limits the turn-on current and prevents you from popping the house circuit breakers. After about a second, a relay clicks, defeating this in-rush circuit, meanwhile builtin output muting relays prevent any pops or thumps from being transmitted to the speakers. Be sure the signal driving the amplifier is turned down when you first power up the system. There are few things as rude as four seconds of silence followed by full-blast stereo sound, especially when the baby is sleeping.

When you shut down your

system, turn off your ampli-

fiers first. When powering

up, turn on your amplifiers

last. This way, equipment feeding the amp won’t

“pop” or “thud” the speakers during power up or power down.

POWER CORD

We all know what a power cord is. The M•2600 has a detachable cord. Attach it to the amplifier first, then plug it into an AC outlet properly configured for the type of plug on the power cord and for the voltage rating of your amplifier.

The M•2600’s voltage

source must be capable of

continuously delivering 20

amps at 120 VAC (9 amps

for 240 VAC models and 14 amps for 100 VAC models).

For safety reasons, the source must be a 3-prong outlet with hot, neutral, and ground terminals. We’re dealing with some big-time electricity here — don’t mess with it. See “AC Power Con- siderations” on page 29, and carefully read and follow all the safety instructions at the start of this manual.

1CHANNEL

INPUT						CROSSOVER
BALANCED	LOW CUT FILTER
OR				TYPICAL	60Hz	90Hz	120Hz
UNBALANCED
				35 Hz
			R	STAGE
	O	F	E	MONITOR
	O
	W

B100 Hz

U

S

OFF 170 Hz

	AMP MODE
STEREO	MONO BRIDGED
TYPICAL
		CH's
	SUMMED
OUTPUT APPLICATION
	FULL	LOW OUT
	RANGE	(SUB WOOFER)

CROSSOVER

60Hz 90Hz 120Hz

				CHANNEL 2
				INPUT
LOW CUT FILTER				BALANCED
		TYPICAL		OR
				UNBALANCED
			35 Hz
		R	STAGE
O	F	E	MONITOR
O
W			100 Hz
U
B
S
		OFF	170 Hz

THRU

THRU LOW HIGH OUT OUT

IN

SWITCHED OUTPUT

OFF

ON

TYPICAL

LIMITER

(CH1 & CH2)

THRU

HIGH LOW THRU

OUT OUT

IN

SWITCHED OUTPUT

21