Markbass MB 1000 User Manual download pdf (Page 5)

INPUT LEFT (11) - This XLR input provides an input to the Left Channel from the output of your preamp or the last device in your eects chain. This connection is used as the input connection when

operating the MB 1000 power amp in Bridge mode.

INPUT RIGHT (12) - This XLR input provides an input to the Right Channel from the output of your preamp or the last device in your eects chain. Use this input and Left Channel balanced input when

running in stereo. Please note that the Right input is inoperable in Bridge mode.

LINK LEFT 13 / RIGHT 14 - Use these balanced outputs to connect other devices or send the signal to a mixer/PA.

GROUND LIFT FOR INPUTS 15 AND LINKS 16 – Occasionally you may detect a constant hum when using the power amp. This is almost always due to a grounding problem related to your power

source; you will likely eliminate/reduce this hum simply by ipping the Ground Lift (GND) switch.

SPEAKER OUT LEFT 17 AND RIGHT 18 – These speakon outs provide power outputs for Left and Right channels to speaker cabinets. Do not connect these outputs to a load of less than 4 ohms!

SPEAKER OUT BRIDGE (19) – This speakon out is used when using the MB 1000 power amp in mono-bridge mode. Do not connect this output to a load of less than 8 ohms!

Note: always be certain to use a speaker or speakers capable of handling the power provided in the above mentioned applications.

AC POWER (20) – Connection for the power cord. This location also houses the main fuse of the unit.