15
If 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” when it’s
powered up or down.
POWER CORD
We all know what a power cord is. The
M•1400/M•1400i has a big beefy cord built in.
Plug the power cord into an outlet that is capable
of delivering the correct voltage for your model.
For current-delivery
purposes, the M•1400/
M•1400i’s voltage source
(wall outlet, extension
cords, or power strips)
must be capable of continuously delivering 15
amps (for 120V versions). And for safety rea-
sons, that 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 Consider-
ations” on page 25 for more details.
SPEAKER OUTPUTS
Some call them “GR” jacks, others call them
“Banana” jacks, but we prefer to call them
“Binding Posts.” You can call them whatever
you like (except late for supper). These termi-
nals are your standard fare.
To use the binding post outputs, you can
terminate your speaker cables with single or
double banana plugs, spade lugs, or leave them
unterminated: Unscrew the amp’s binding posts
enough to reveal the holes on their sides, then
insert your stripped wires (stripped about 3/8"
back) into the holes and retighten the posts
(finger tight is fine — please don’t reef on them
with a wrench!). Be careful that no runaway
strands touch the chassis or other terminals.
CHANNEL
2
1
CHANNEL
63Hz
125Hz
CONSTANT DIRECTIVITY
HORN EQ /AIR EQ
CONSTANT DIRECTIVITY
HORN EQ /AIR EQ
INPUT
THRUTHRU
INPUT
AMP MODE
FREQUENCY
4.5 k Hz
ON
6k Hz
2k Hz
MONO
(CHS SUMMED)
B
R
ID
G
E
LIMITER (CH1 & CH2)
OFF
FULL
RANGE
SUB
WOOFER
LOW CUT
FILTER
LOW CUT
FILTER
OUTPUT APPLICATION
BALANCED
OR
UNBALANCED
BALANCED
OR
UNBALANCED
ON
/ BRIDGE / MONO
170 Hz
OFF
4.5k Hz
6k Hz
2k Hz
170 Hz
100 Hz
OFF
STAGE
MONITOR
100 Hz
STAGE
MONITOR
OFF
TYPICAL
ON
OFF
TYPICAL
TYPICAL
35 Hz
TYPICAL
35 Hz
STEREO
TYPICAL
STEREO
TYPICAL
AIR EQ
AIR EQ
G
N
D
Bare Wire
Double Banana Plug
1
/
4
"
Spade Lug
The red posts are labeled “+,” which means
positive. The black posts are labeled “–” for
negative. You probably know the importance of
getting these terms correct — if one side is
hooked up “in phase” and the other side is “out
of phase,” you’ll be “out of work.” (By the way,
although everyone says “phase” in this situa-
tion, the correct word is “polarity”... but it’s not
as much fun to say.)
Using high-quality stranded speaker cable
(16 gauge or thicker), connect the positive
outputs of the M•1400/M•1400i to the positive
inputs of your speakers, and the negative out-
puts to the negative inputs. The exception: If
you’re using the M•1400/M•1400i in
BRIDGE
mode, this does not apply, (see
BRIDGE
on
page 22).
In addition to the binding posts, the M•1400i
also has 1/4" TS (tip-sleeve)
SPEAKER OUTPUTS
,
so you can use speaker cables with 1/4"
TS plugs. The tip is positive (+) and the
shield is negative (–). They’re wired in
parallel with the binding posts and behave
exactly the same (except they can’t be
used in
BRIDGE
mode).
