17
External Speaker (optional)
An optional external speaker can be connected to the M1 for
audio alarms or voice alarms using the Audio cable.
In addition, the speaker also broadcasts VHF voice when the M1
is connected to an H1 or H1P handset.
Make sure the external speaker is installed at least 1M (3ft) from
any magnetic compass or flux gate sensor and at least 1M (3ft)
from the M1 hub itself.
External Speaker wiring color codes
Orange
Audio positive (+ve)
Black
Audio negative (-ve)
HINT - For best audio performance, choose a speaker with a
minimum 10W audio power rating and 4 ohm impedance.
External Speaker Wiring Diagram
Audio positive (+ve)
Orange
Black
Vesper Marine External Speaker
The Vesper Marine External Speaker (Part Number 111210) is
purpose designed for the marine environment.
Featuring IP66 ingress protection this speaker is suitable for
installing almost anywhere on board.
- 3” 70 Watt Speaker
- Frequency response of 80Hz-18kHz
- 4 ohm impedance
- IP66 water resistant for marine applications
- UV resistant polymer housing / Polypropylene cone
- Heavy duty molded ABS plastic basket and grill
- Pre-wired with 2m (6.5ft) of cable
SENSOR
INPUT 1
GPIO
10 PIN GPIO
+12V
I/O 1
GPIO GND
10 PIN GPIO
- 12V
+ve 12/24V
I/O 2
GPIO
10 PIN GPIO
ORANGE
WHITE
DARK GREEN
YELLOW
ORANGE
BLACK
RED
BROWN
LIGHT GREEN
INPUT / OUTPUT 2
BROWN
INPUT / OUTPUT 1
GRAY
INPUT 3
VIOLET
INPUT 2
BLUE
INPUT 1
RED
PULLUP VOLTAGE
NMEA TX (+) A
NMEA TX (-) B
NMEA RX (+) A
NMEA RX (-) B
AUDIO +VE
AUDIO -VE
Reserved - Do not connect
Reserved - Do not connect
BLACK
RED
POWER +VE
POWER -VE
POWER +VE
POWER -VE
BLACK
RED
FUSE
SVE
SPEAKER -VE
ORANGE
BLACK
LIGHT
GREEN
BROWN
GRAY
VIOLET
BLUE
BLACK
RED
I/O 2
I/O 1
INPUT 3
INPUT 2
INPUT 1
GPIO GND
EXTERNAL V IN
EXTERNAL SENSOR
-ve
-ve
OUTPUT RELAY
LIGHT
ORANGE
WHITE
DARK GREEN
YELLOW
-ve
-ve
+ve 12/24V
+ve 12/24V
+ve 12/24V
87
85
30
86
93.5mm (3 1
1/16”)
86mm (3 3/8”)
86mm (3 3/8”)
93.5mm (3 1
1/16”)
55.6mm (2 3/16”)
ø 4mm (5/32”)
DRILL / CUT
DRILL X 4
ø 74.5mm (2 15/16”)
74.5mm (2 15/16”)
NMEA TX (+) A
NMEA TX (-) B
NMEA RX (+) A
NMEA RX (-) B
BLACK
BLACK
NMEA 0183 COMMON
and GPIO GROUND
NMEA 0183 COMMON
(Shared with GPIO Ground)
External Speaker Dimensions
Side
Front
Audio negative (-ve)
