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28B-SST Amplifier
3
6. Output binding posts.
The RED binding posts are the in-phase amplifier output. Both red binding posts are the same. Connect either red binding
post to the (+) terminal on the loudspeaker. The second red binding post is provided for bi-wiring or second loudspeaker.
The BLUE binding posts are the inverted-phase amplifier output Connect either blue binding post to the (-) terminal on the
loudspeaker. The second blue binding post is provided for bi-wiring or second loudspeaker.
N.B.: At no time should either output be connected to a ground, or chassis. Failure of the
amplifier may result. Never connect either output in parallel with another amplifier.
N.B.: The minimum recommended loudspeaker load is 4 ohms.
The Output binding posts provide three different interconnect options. Combinations may be used when bi-wiring. See fig-
ure 2 below. Cables should be kept as short as practical and should never be terminated with connectors that may become
confused for AC power connectors. Cables should be dressed away from input and power cables.
● Banana plugs offer a quick disconnect option. Before inserting a banana plug into the binding post be sure to tighten
the post nut to avoid rattling and to provide full insertion of the banana plug. Gold plated locking banana plugs are
available from Bryston.
● Spade lugs provide high contact area and secure fastening. Lugs should be gold plated. See diagram for details. Post
diameter is 5/16’ ( 8mm ), lug width 5/8” (16 mm). Gold plated spade lugs are available from Bryston.
● Stripped bare wire up to 3 gage can be inserted through the hole in the binding post and held in place by tightening
the post knob. Additional tightening pressure can be achieved using a coin in the slots of the knob. Do not over tighten
or the binding post may become damaged. Note that copper wire is malleable and may require further tightening after
the initial installation.
5/8”
5/16”
Spade lug dimensions
BANANA
PLUG
SPADE
LUG
BARE
WIRE