Audio Amplifier Wiring
18
Figure 10: Using a Speaker Isolator
QAA-5230S-70/25 Amplifier Wiring
QAA-5230S-70/25 dual 30 watt amplifier has two 30 watt amplifiers. Each amplifier has two Class B 15 watt
supervised speaker circuits. Each circuit is wired to provide two separate speaker zones on the same floor. Amplifier
is set to 70V, if 25V is required, remove orange molex connector cable labelled MD-787 and replace with blue molex
connector cable labelled MD-788.
Figure 11: QAA-5230S-70/25 Wiring
Notes:
• All circuits are power limited.
• There are six fuses on this board. Two are 8A fast blow and four are 1/2A fast blow for the 70V version
and two are 8A fast blow and four are 1.25 A fast blow for the 25V
• See speaker wiring chart for wire gauge selection.
JP1
CUT JUMPER JP1 WHEN USING A SPEAKER ISOLATOR
QAA-5230-70/25 AND QAA-5160-70/25 AMPLIFIERS
18
Note: When using a speaker isolator (SIS-204 or SISA-
204 for use in Canada only), jumper JP1 (top left-
hand corner, component side) must be cut on the
QAA-5230-70/25 and on the QAA-5160-70/25.
1
2
3
4
5
6
7
8
QAA-5230S-525-70/25
TERMINAL BLOCK
1/2 OF
ZONE A
25 Watts
1/2 OF
ZONE A
5 Watts
1/2 OF
ZONE B
5 Watts
1/2 OF
ZONE B
25 Watts
-
+
-
-
-
+
+
+
CLASS B
30 WATTS
MAX EACH
ZONE
CLASS B
30 WATTS
MAX EACH
ZONE
22 K, 1W ELR
MODEL MP-302
MANUFACTURED BY
MIRCOM
22 K, 1W ELR
MODEL MP-302
MANUFACTURED BY
MIRCOM
22 K, 1W ELR
MODEL MP-302
MANUFACTURED BY
MIRCOM
22 K, 1W ELR
MODEL MP-302
MANUFACTURED BY
MIRCOM
SPEAKER
SPEAKER
SPEAKER
SPEAKER
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