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Features (continued)
the -3 position decreases the output of the tweeter relative to the woofer. The
0 position is the factory setting and generally provides the most natural response
from the speaker.
The use of a 70 Volt transformer allows several HS-615 speakers to be used together
by running a speaker wire from one speaker to the next in a parallel connection
when using a 70 Volt amplifier (as shown in the wiring diagram below).
WARNING: Refer to the wiring diagrams and voltage selector sections to
properly install a 70 Volt system.
Wiring Diagrams
CAUTION: If your amplifier isn’t capable of handling the impedance of all
connected speakers, this may result in overloading the amplifier and may cause
possible damage to the amplifier. Check your amplifier’s documentation for
proper impedance levels.
Parallel Connection
A parallel connection exists when speakers are connected directly to an amplifier
(as shown in the illustration below). Each speaker’s positive terminal is directly
connected to the amplifier’s positive terminal, and each negative terminal is
directly connected to the amplifier’s negative terminal. This type of connection
should be made when using a 70 Volt amplifier.
In this example, each speaker is set to
70 Volt operation and is being powered
by a 70 Volt amplifier. If the speakers
were set to 8 Ohm operation, the total
impedance (using Ohm’s Law) equals
(8 x 8) ÷ (8 + 8) or 4 Ohms, which
may be too low for some amplifiers.
Make sure to properly select 70 Volt
or 8 Ohm operation before connecting
the speakers to the amplifier.