Niles Audio MRZ-6 - Manual (Page 8)

6
Audio connections
Introduction — The MRZ-6 Has Only One Input
An MRZ-6 has one set (left and right) of line-level inputs. All of the rooms connected to an MRZ-6 listen to the
same source. The MRZ-6 cannot switch between two sources (i.e., CD and Tuner) without some kind of out-
board input switcher. Typically, the input switching you need is built into a preamp, receiver, or an IR con-
trolled switching device. The two most popular methods of providing the input switching you need for your
multi-room system is to either purchase an infrared remote controlled preamp/receiver that is dedicated to the
multi-room system or to purchase an infrared remote controlled “two zone” preamp/receiver, using one zone
of the preamp/receiver for a home theater and the other zone to select sources for the MRZ-6.
In the following sections, only IR controlled input switching is discussed. This is because of the extensive
automation capabilities of the MRZ-6. Using an inexpensive manually controlled switcher for the MRZ-6 will
work sonically and electrically, but will not take advantage of the MRZ-6’s automation.
Connections for a System with Only One Source
An MRZ-6 has one set (left and right) of line-level inputs. If you have only one source (i.e., a CD player), its
line level outputs may be connected to the MRZ-6’s inputs via a stereo patch cable with RCA phono plugs on
both ends. See Figure 9.
Connections for a System with a Dedicated Preamp/Receiver or a Two Zone Preamp/Receiver
All of the source outputs are fed to the preamp/receiver’s inputs, the preamp/receiver selects a source and the
output is fed to the MRZ-6 input via a stereo patch cable with RCA phono plugs on both ends. If a “preamp
output” is used, the volume control of the preamp/receiver (a master volume for the entire system) must be per-
manently set to a high level (typically about 12 o’clock or 0dB) and never changed. Alternatively, a “tape out-
put” or “record output” can be used, unless the preamp/receiver incorporates a record output selector switch
that does not respond to an infrared remote control for input selection. See Figure 10.
When a two zone preamp/receiver is used, all of the source outputs are fed to the two zone preamp/receiver’s
inputs, the home theater or main zone of the preamp/receiver selects a source for the home theater and the
second zone preamp of the preamp/receiver selects a source for the multiroom system. The second zone pre-
amp output is fed to the MRZ-6 input via a stereo patch cable with RCA phono plugs on both ends. The vol-
ume control of the second zone of the preamp/receiver (the master volume for the entire system) must be per-
manently set to a high level (typically about 12 o’clock or 0dB) and never changed.
Figure 9 A Single Source Connected to an MRZ-6 system
COMMON ZONE ALL ON
CTRL
OUT POWER
16VAC FLASHER LEVEL ADJUST
1
G
N
D D
A
T
A +
1
2
V 2
G
N
D D
A
T
A +
1
2
V 3
G
N
D D
A
T
A +
1
2
V 4
G
N
D D
A
T
A +
1
2
V 5
G
N
D D
A
T
A +
1
2
V 6
G
N
D D
A
T
A +
1
2
V
IN OUT
FLASHERS IR DATA DEDI- CATED 12V SYNC
IR SENSOR/KEYPAD INPUTS
V E
NILES
UART
+ -
MAIN
INPUT ROOM 1
OUTPUT ROOM 2
OUTPUT ROOM 3
OUTPUT ROOM 4
OUTPUT ROOM 5
OUTPUT ROOM 6
OUTPUT
L
R
L
R
L
R
L
R
CASCADE
OUTPUT
L
R
L
R
L
R
L
R
Niles Audio Corporation, Inc.
Miami, Florida USA MODEL MRZ-6 This device complies with part 15 of the FCC Rules. Operation is sub-
ject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Left Line-Level Audio
Right Line-Level Audio
Figure 10 Multiple Sources Connected to an MRZ-6 system Via a Preamp/Receiver
COMMON ZONE ALL ON
CTRL
OUT POWER
16VAC FLASHER LEVEL ADJUST
1
G
N
D D
A
T
A +
1
2
V 2
G
N
D D
A
T
A +
1
2
V 3
G
N
D D
A
T
A +
1
2
V 4
G
N
D D
A
T
A +
1
2
V 5
G
N
D D
A
T
A +
1
2
V 6
G
N
D D
A
T
A +
1
2
V
IN OUT
FLASHERS IR DATA DEDI- CATED 12V SYNC
IR SENSOR/KEYPAD INPUTS
V E
NILES
UART
+ -
MAIN
INPUT ROOM 1
OUTPUT ROOM 2
OUTPUT ROOM 3
OUTPUT ROOM 4
OUTPUT ROOM 5
OUTPUT ROOM 6
OUTPUT
L
R
L
R
L
R
L
R
CASCADE
OUTPUT
L
R
L
R
L
R
L
R
Niles Audio Corporation, Inc.
Miami, Florida USA MODEL MRZ-6 This device complies with part 15 of the FCC Rules. Operation is sub-
ject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Left Line-Level Audio
Right Line-Level Audio