17
WaveCAST EIGHT
Improper Wiring (See no circle):
If the left and right positive leads from the source were connected to the + and - pins on the
Phoenix style connector, and their grounds (shields) were connected to the ground terminal, the result would be the
difference
of the left and right channels. The main part of the audio signal (what is common to both the left and right channels) would be
missing, as this is thrown away during
differential amplification
. The difference is
very little
, resulting in a very low input signal. In
this case, most of the original audio would not be heard.
R-
R+
red
L-
L+
shield
white
RCA
shield
No
L-
L+
R-
R+
shields
red
white
3.5mm
L-
L+
R-
R+
(shields)
L-
L+
R-
R+
1kΩ
1/16 Watt
Resistors
(shields)
Only for
Summing
Stereo to Mono
L-
L+
R-
R+
(shields)
Yes
Not
Used
Improper and Proper Wiring
Selecting an Audio Source Appropriate for Hearing Impaired Listeners
The WaveCAST EIGHT transmits audio with excellent fidelity. Therefore, the audio source signal should be of the highest audio
quality and not subject to a compressor, limiter, reverberation, or other signal processing equipment. While compressed audio
is available through the WaveCAST EIGHT, excessive compression is not helpful to the hearing impaired and can contribute to
excessive noise in the audio.
The WaveCAST EIGHT audio source signal is usually connected to a mixer’s line output signal which is behind the mixer’s
parametric equalizers but ahead of any equalization used for house loudspeakers.
Connecting to other Devices
Each Phoenix-style connector on the back of the device can be connected to an audio source. Each connector will broadcast on
its own channel.
