User manual

AD-9 Operating Instructions Page 12
Connecting To Your Amplifier: Speaker Outputs
The speaker outputs are via Neutrik SpeakON
TM
connectors. 2 pole (NL2FC) or 4 pole (NL4FC)
connectors can be used.
Pin 1+/2+: Hot
Pin 1-/2-: Cold
There must be no shared connections between channels.
Negative output terminals must not be joined together as they are not both at
ground potential. Connecting them together will damage the amplifier and void
the warranty!
As the currents involved are very high, and to ensure best performance, the speaker cables
should be kept as short as possible and conform to the following minimum requirements:
AD-9: 25A into 4 Ohm speaker loads
When operating the amplifier into loads of less than 4 Ohms, be aware that the current
capacity of the speaker cables will need to be increased above the values quoted here.
Do not connect the inputs/outputs to any other voltage source such as a battery, mains
source or power supply, regardless of whether the amplifier is turned on or off.
Do not run the output of any amplifier channel back into another channel’s input and do not
parallel or series-connect an amplifier output with any other amplifier output.
Connections for Bridge Mono Operation
The AD-9 is capable of being bridged, however when doing so the output power and RMS
voltages produced are potentially fatal. As such, please contact EM Acoustics should you
wish to bridge the AD-9 to discuss your application.
SPEAKON NL2 & NL4