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3.1.2 Using Binding Posts
When not using AMR's or another manufacturer’s Speakon® equipped loudspeaker cables, you need to use a
conventional two or four pole speaker cable. Please consult your authorised AMR retailer for recommendations.
Connect a suitable loudspeaker cable to the speaker binding posts, located at rear of the LS-77.
When using two-pole speaker cables, the cable should be connected to the upper pair of binding posts and the
included short Bi-Wire Jumper Cables must be connected between the upper and lower binding post of the same
colour marking. When using four-pole speaker cables usually two of these poles will be dedicated to carrying the
high frequency signal, connect these to the upper pair of binding posts. The low frequency poles are connected
to the lower binding posts. In all cases observe the polarity, usually marked by black and red markers on the
cable and match these markers with the colour coding of the binding posts.
The LS-77 high quality binding posts can accommodate different connection systems:
6 mm pins: The pins can be placed directly into the binding post without any screwing necessary.
Cable spades: Un-tighten the binding posts, insert the spades into the openings, and secure the spades into the
posts by tightening the posts. Tighten the posts, and check the contacts after a few days to make sure that they
have not loosened.
Bare wires: Un-tighten the binding posts and place the cable into the binding posts. Tighten the posts. With bare
wire terminations, make sure that no thin metal strand of wire is in contact with another strand of wire. Tighten
the posts, and check the contacts after a few days to make sure that they have not loosened.
With every connection system, it is important to ensure that the contact is tight and has a proper contact area.
Connectors with similar gold plating as the LS-77 Reference Class Professional Monitor binding posts will
typically offer the best results while also remaining corrosion-free.
Warning: ensure
no speaker
connector is in
contact with the
speaker enclosure
to cause a short-
circuit!