installation
4
Maxim III
7
installation of speakers
SP-628 ceiling speakers
The IMA-520 (and IMA-524) has two channels of amplified audio, rated for a minimum 4-ohm
speaker load. There are two blue Phoenix style speaker connectors on the back panel, each
providing two pairs of speaker terminals. The top connector provides connection to both
channels as does the bottom connector. Each is wired in parallel to the other as shown
below. These are the acceptable wiring methods.
MAX 2 8
Ω SPEAKE
R
S /A
M
P
MIN 4
Ω /A
M
P
POWE
R 25
W/A
M
P
@4
Ω
L
INE
PAGE PASS
THR
O
U
G
H
TO
SPK
R
TE
RMINAL
S
A1
&/O
R A2
F
IR
E A
LARM
M
U
TE I
N
P
UT
LEVEL
ANTI-HUM
1 W
MUTE
DRA
W
OFF
0.1 W
25V
INPUT
DRA
W
P
AGE
MUT
E
MAX 2 8
Ω SPEAKE
R
S /A
M
P
MIN 4
Ω /A
M
P
POWE
R 25
W/A
M
P
@4
Ω
L
INE
PAGE PASS
THR
O
U
G
H
TO
SPK
R
TE
RMINAL
S
A1
&/O
R B1
F
IR
E A
LARM
M
U
TE I
N
P
UT
LEVEL
ANTI-HUM
1 W
MUTE
DRA
W
OFF
0.1 W
25V
INPUT
DRA
W
P
AGE
MUT
E
INCORRECT!
Home run
MAX 2 8
Ω SPEAKE
R
S /A
M
P
MIN 4
Ω /A
M
P
POWE
R 25
W/A
M
P
@4
Ω
PAGE PASS
THR
O
U
G
H
TO
SPK
R
TE
RMINAL
S
A1
&/O
R A2
F
IR
E A
LARM
M
U
TE I
N
P
UT
1 W
MUTE
DRA
W
OFF
0.1 W
25V
INPUT
DRA
W
P
AGE
MUT
E
MAX 2 8
Ω SPEAKE
R
S /A
M
P
MIN 4
Ω /A
M
P
POWE
R 25
W/A
M
P
@4
Ω
PAGE PASS
THR
O
U
G
H
TO
SPK
R
TE
RMINAL
S
A1
&/O
R B1
F
IR
E A
LARM
M
U
TE I
N
P
UT
1 W
MUTE
DRA
W
OFF
0.1 W
25V
INPUT
DRA
W
P
AGE
MUT
E
Parallel
Channel A
Max 2, 8-ohm speakers in parallel
Channel B
Max 2, 8-ohm speakers in parallel
+ -
+ -
+ -
+ -
+
-
+
-
A1
B1
B2
A2
A1
B1
B2
A2
A1
B1
B2
A2
A1
B1
B2
A2
+ -
+ -
- +
- +
+
+
-
-
+
+
-
-
7