Mackie FR1400 ユーザーズマニュアル

Owner’

s Manual

The following steps will help you set up your 
amplifier, and get the levels just right.

1.  Be sure the amplifier’s POWER switch is off.
2.  Turn down both Level controls.
3.  On the rear panel, set the SUBSONIC FILTER 

switch OFF and the CLIP LIMIT switch ON.

4.  Determine which AMP MODE is best for your 

application:

 

STEREO mode is the typical setup for am-
plifying stereo signals. INPUT 1 is routed to 
CHANNEL 1 output, and INPUT 2 is routed to 
CHANNEL 2 output.

 

MONO mode is used for sending a mono signal 
to both outputs, with separately adjustable 
level controls. INPUT 1 is used in MONO mode 
(leave INPUT 2 disconnected).

 

BRIDGE mode uses both outputs to double the 
power to one speaker (or set of speakers). IN-
PUT 1 is used in BRIDGE mode (leave INPUT 
2 disconnected and its Level control turned 
down).

 

NOTE: 4 ohms is the minimum speaker imped-
ance you should connect to the amplifier in 
BRIDGE mode.

5.  Set the AMP MODE switch according to your 

application and delicate sensibilities.

1.   Using balanced cables, make connections from 

your mixer (or other signal source) MAIN OUT 
to your amplifier’s INPUTs.

2.   In STEREO mode, connect the cables from your 

signal source to the amplifier’s INPUT jacks, ei-
ther XLR or 1/4" TRS. The XLR and TRS inputs 
for each channel are wired in parallel.

•  The balanced XLR inputs are wired as follows:

Pin 1 = shield (ground)
Pin 2 = hot (+)
Pin 3 = cold (–)

•  The 1/4" TRS inputs are wired as follows:

Tip = hot (+)
Ring = cold (–)
Sleeve = shield (ground)

3.   In MONO mode and BRIDGE mode, connect 

one cable from the input source to INPUT 1, 
and connect nothing to INPUT 2.

4.  In STEREO and MONO modes, connect speaker 

cables to the SPEAKER OUTPUTS, either the 
binding posts or the Speakon® connectors.

•  The binding post connectors are wired as fol-

lows:
Red = hot (+ speaker terminal)
Black = cold (– speaker terminal)

•  The Speakon connectors are wired as follows:

1+ = hot (+ speaker terminal)
1– = cold (– speaker terminal).

5.  In BRIDGE mode, if using the binding post 

outputs:
CH 1 red post = hot (+ speaker terminal)
CH 2  red post = cold (– speaker terminal)
Do not use the black terminals.

 

If using a Speakon connector, connect the 
Speakon to the center BRIDGED connector. 

•  The BRIDGED Speakon connector is wired as 

follows:
1+ = hot (+ speaker terminal)
2+ = cold (– speaker terminal)

6.   Plug all the sound system components into suit-

able AC outlets, properly grounded and capable 
of delivering adequate current.

7.   Make sure your signal source is powered up and 

delivering signal to the amplifier.

8.  Turn the power amplifier’s switch on. Verify that 

the POWER LED lights.

9.  Slowly turn up both Level controls on the am-

plifier. You should hear music and see the SIG 
LEDs flashing. If the OL (Overload) LEDs are 
flashing, turn down either the Level controls on 
the amp or the source signal’s output level con-
trols (i.e., master faders), until the OL LEDs 
either blink occasionally or not at all.

10.  For quieter listening, it is preferable to adjust 

the amp’s Level controls rather than the source 
signal’s output level (unless you have the 
source’s control all the way up!).

•  Never plug amplifier outputs into anything 

except speakers (unless you have an outboard 
box specifically designed to handle speaker-
level signals). Pumpkins are right out.

•  Before making connections to an amp or recon-

figuring an amp’s routing, turn the amp’s level 
controls down, turn the power off, make the 
changes, turn the power back on, and then turn 
the level controls back up.

•  If you shut down your equipment, turn off the 

amplifiers first. When powering up, turn on the 
amplifiers last.

•  Save the shipping box and packing material!