WARNING! ALL FFA AUDIO POWER AMPLIFIERS CAN CREATE VERY HIGH SOUND PRESSURE LEVELS.
EXPOSURE WITHOUT ADEQUATE HEARING PROTECTION COULD CAUSE PERMANENT HEARING LOSS.
NEUTRIK NL4 OR NL2 TYPE CABLE CONNECTORS ARE TO BE USED FOR CONNECTING THE AMPLIFIER TO LOUDSPEAKERS.
FFA-4004, FFA-6004.
FFA-4004 and FFA-6004 amplifiers are designed to drive a minimum of 4 Ohms load per channel.
A typical load for each amplifier channel would be 2 x 8 Ohm loudspeakers connected in parallel.
Each channel has its own Neutrik SpeakON audio output socket.
FFA-4004 and FFA-6004 has its output sockets
internally connected as follows.
Channel A = 1+ 1-, 2+ 2- = Channel B
Channel B = 1+ 1 –
Channel C = 1+ 1- 2+ 2- = Channel D
Channel D = 1+ 1 –
Channel A and Channel C allow the use of a 4 core loudspeaker cable to be connected directly into the output. This is useful when connecting
the amplifier outputs to a biamplified loudspeaker system without using an ancillary patching panel.
An example of this would be a monitor or stage wedge loudspeaker where Channel A would connect to the bass section and Channel B would
connect to the high frequency unit within the loudspeaker enclosure. An electronic cross over filter used in conjunction with the four channel
amplifier would process the audio signals. An analogue cross over filer card is available as an accessory which is internally fitted within the
amplifier and conditions the signals to each channel as required. This card is factory programmable and is fitted to the four channel amplifier
at time of ordering from the FFA factory and should be requested when ordering.
Audio output and load connection
D = 1+ 1- C = 1+ 1-
D = 2+ 2-
B = 1+ 1- A = 1+ 1-
B = 2+ 2-
OUTPUTS
MINIMUM LOAD
PER CHANNEL 4?
D C B A
pg 10
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