A speaker interconnection block with two voice coils to be driven with
separate amplifiers, or to use one amplifier to drive the two voice coils
in series or parallel without having to reinterconnect the voice coils.
This is achieved by locating the negative voice coil terminals next to
each other and the positive voice terminals next to each other on the
connection block. When two amplifiers are used to drive the voice coils,
the sequence of connections of the amplifiers matches those of the voice
coils mentioned above. When only one amplifier is used, that amplifier is
connected between the two amplifier terminals farthest from each other.
To connect the voice coils in series a single jumper is used to
interconnect the two terminals in the center, and for parallel connection
two jumpers are used to connect to two terminals at the ends of the
sequence together separately.