Lyngdorf Audio MXA-8400 Owner's Manual page 13

2-CHANNEL / BRIDGE MODE
The MXA-8400 is an 8-channel amplifier which allows bridging two amplifier channels to provide double the
voltage and up to quadruple the output power with the same speaker impedance. For example: 200W in 8
ohms in 2 CHANNEL MODE becomes 800W in 8 ohms in BRIDGE MODE.
•
The channel pairs 1-2, 3-4, 5-6 and 7-8 can be bridged respectively. Set the
intended channel pair switch to either 2-CHANNEL or BRIDGE MODE.
•
To change between 2-CHANNEL mode and BRIDGE MODE, the MXA-8400 must be fully
powered off or in standby mode.
•
In BRIDGE MODE, each amplifier pair always uses the first XLR input and the first speaker
output. For example: When channels 1 and 2 are bridged, the signal will be taken from the
XLR 1 input and amplified through speaker output 1. The XLR 2 input and the speaker
output 2 cannot be used.
• In 2-CHANNEL mode, connect the speaker cable wires to the 1+ and 1- cable clamps inside
the Neutrik SpeakOn connector.
•
In BRIDGE MODE, connect the speaker cable wires to the 2+ and 2- cable clamps inside the
Neutrik SpeakOn connector.
•
In unbridged 2-CHANNEL mode, the minimum nominal speaker impedance is 4 Ohm.
In BRIDGE MODE, the minimum nominal speaker impedance is 8 Ohm.
Please refer to the speaker manufacturer's technical specifications and check the nominal speaker
impedance (IEC). The IEC (International Electrotechnical Commission) standard for rated speaker
impedance is as follows: The minimum impedance shall not fall below 80% of the nominal impedance over
the defined frequency range of the speaker. For example:
4 Ohm speakers have a minimum impedance no less than 3.2 Ohm.
8 Ohm speakers have a minimum impedance no less than 6.4 Ohm.
Balanced XLR inputs 1 - 8
Connect each analog audio output channel from your external pre-amp or processor to the intended balanced
XLR input 1 – 8 on the MXA-8400.
Every input has the same performance specifications and same sound quality.
Note: Always turn off the MXA-8400 and other components in the system before connecting or disconnecting
anything to the balanced XLR inputs.
Lyngdorf Audio MXA-8400 – Owner's manual 13