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Page 11
4.3
Channel Descriptions
JSD-100MA has 16 AES input channels. In the transition to digital cinema, the industry is adopting new names
and abbreviations for speaker locations. Generally, the first letter is capitalized and either L for left, C for
center or R for right. The second and third letters, if present, are lower case and further define the position. In
some cases the second letter is upper case to eliminate confusion with bi-amp and tri-amp speaker output
labels such as Left High Band (Lh). The actual speaker placement is determined by the auditorium room size
and shape. The following is a general speaker placement description to aid in distinguishing the JSD-100MA
output channels for an object base sound environment.
New
Name
(abbreviation)
Description
Previous
Name
(abbreviation)
Left (L)
Typically positioned behind the screen to the far left edge,
horizontally, of the screen center as viewed from the seating area.
Left (L)
Left High (LH)
Located above the front left at approximately screen height top
region of the screen.
Right (R)
Typically positioned behind the screen to the far right edge,
horizontally, of the screen center as viewed from the seating area.
Right (R)
Right High (RH)
Located above the front right at approximately screen height top
region of the screen.
Center (C)
This loudspeaker position is typically behind the screen
corresponding to the horizontal center of the screen as viewed from
the seating area. Also the intended speaker position for mono
reproduction.
Center (C)
Low
Frequency
Effects (LFE)
Screen low frequency effects subwoofer loudspeaker(s). This is
typically one or more band-limited low frequency only loudspeakers
at the screen end of the room.
Subwoofer (SW)
Left Side Front (Lsf) Located on the left side at about 1/2 the distances from the screen
and before the surround speaker array located at about 1/3 the
distance from the front.
Right Side Front
(Rsf)
Located on the right side at about 1/2 the distances from the screen
and before the surround speaker array located at about 1/3 the
distance from the front.
Left Side surround
(Lss)
Typically an array of loudspeakers positioned along the left side of
the room starting approximately 1/3 of the distance from the screen
to the back wall and the left side of the rear wall. Left surround may
not extend to the back wall of the auditorium.
Left Surround (LS)
Left Side High (Lsh)
Located above the left surrounds near the ceiling, an array of
speakers starting at approximately 1/3 the distance from the screen
and rear wall.
Right Side surround
(Rss)
Typically an array of loudspeakers positioned along the right side of
the room starting approximately 1/3 of the distance from the screen
to the back wall and the right side of the rear wall. Right surround
may not extend to the back of the auditorium.
Right
Surround
(RS)
Right Side High
(Rsh)
Located above the right surrounds near the ceiling, an array of
speakers starting at approximately 1/3 the distance from the screen
and rear wall.
Left rear surround
(Lrs)
One or more loudspeakers typically on the back wall of the room to
the left horizontally.
Back Surround Left
(BSL)
Right rear surround
(Rrs)
One or more loudspeakers typically on the back wall of the room to
the right horizontally.
Back
Surround
Right (BSR)
Ceiling Channel A
(CEA)
An array of speakers that can be located as rows parallel to the side
or front (screen) producing audio above from front to back Or left to
right.
Ceiling Channel B
(CEB)
An array of speakers that can be located as rows parallel to the side
or front producing audio above from front to back Or left to right.
