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Very Important Note about using MA2.8S power amplifiers with W8LM /LMDs
MA2.8S amplifier output A carries both channels via an NL4 connector as follows:
Pins +1/-1 = Ch1
Pins +2/-2 = Ch2
This dual output/single connector scheme may be used to drive one group of bi-
amplified W8LM from one 2-ch power amplifier - via an NL4 cable directly from
MA2.8S o/p A to the W8LMs. Please make sure that you use Channel A for LF and
Channel B for HF.
For all passive applications we recommend using an NL2 connector from each power
amplifier output to each group of W8LM to avoid mispatching.
W8LM /LMD
Connector
NL4
+1
-1
+2
-2
Please note!
If you get no hf on an Active W8LM /LMD system check that:
All cabinets are switched to Active
You have selected an Active controller preset
All four NL4 cable cores are connected!
If you get no hf on a Passive W8LM/LMD system check that:
All cabinets are switched to Passive
You have selected a Passive controller preset
Connectors should be kept in good, clean condition to ensure full, undistorted
loudspeaker performance. Worn, corroded or damaged pins and sockets can cause
severe distortion or loss of signal.
Recommended loudspeaker cable
4-core cable is required for W8LM /LMDs.
The following table gives suitable copper core specifications for common applications:
W8LM Pin-outs and cabling
Function
W8LM/LMD Active
Low- mid +
Low- mid -
High +
High –
W8LM/LMD
Passive
Full-range +
Full-range -
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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