Mackie fr-1400 Manuale Utente

FR SERIES AMPLIFIERS

Do not obstruct the ventilation openings of the ampli-

fier.

There are two options for connecting your speakers: 

binding posts and Speakon connectors.

Normally, you would use either the binding posts 

or the Speakon connectors. Since the connectors are 
wired in parallel (e.g., CHANNEL 1 binding post and 
Speakon are in parallel, and CHANNEL 2 binding post 
and Speakon are in parallel), you can connect a speaker 
to each connector, as long as the total impedance per 
channel is two ohms or more.

•  Two 8 ohm speakers in parallel equals 4 ohms.
•  Two 4 ohm speakers in parallel equals 2 ohms.

When the amplifier is used in bridged mono mode, use 

either the center Speakon, or the two red binding posts 
to connect your single speaker.

This is a resettable circuit breaker that monitors the 

amount of current being drawn by the amplifier. Under 
normal operating conditions, this should never pop. An 
unusual condition may cause the breaker to pop, such 
as a mains voltage surge occurring at the same time as a 
peak amplifier output.

Turn the POWER switch off, and push the BREAKER 

button in to reset the circuit breaker. Turn the POWER 
switch back on and the amplifier should resume normal 
operation. If the circuit breaker pops again, something 
probably isn’t right.

•  Make sure that the total impedance of the 

speakers connected to the outputs is 2 ohms 
or greater (per channel) in stereo mode, or 4 
ohms or greater in bridged mode.

•  If the breaker pops right away, even with the 

Level controls turned down and the speakers 
disconnected, there may be something wrong 
inside the amplifier.

•  There are no user-serviceable parts inside. 

Please refer to the “Repair” section on page 13 
for instructions on how to proceed.

Here is where you connect the detachable power cord 

included with your amplifier. Plug the other end of the 
power cord into an AC outlet properly configured with 
the voltage required for your particular model.

Be sure the AC outlet can supply enough current to 

allow full power operation of all the amplifiers plugged 
into it. The outlet should be a three-prong socket that 
matches the power cord.