Copyright © 2021 Martin Audio Ltd.
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SX SERIES USER GUIDE V2.5
SX SERIES USER GUIDE
SXHF218
Connections
The SXHF218 is connected via a pair of NL4 connectors. This subwoofer features a unique wiring configuration which reverses the
connections to the NL4 labelled ‘LINK’. It is vital that connections to the iK42 amplifier are made to the INPUT NL4, if connecting to a
second SXH218 connect from the ‘LINK’ out on the first subwoofer to the ‘INPUT’ on the second sub. Pins 1+/- on the Input are connected
to pins 2+/- on the link and pins 2+/- on the input connected to pins 1+/- on the link. This configuration allows a neat cable solution using
standard 4-core NL4 cables feeding two amplifier channels and ensuring that each sub is driven by one channel and not seeing a load
impedance of less than 4Ω.
The following example shows wiring two SXH218 from independent channels of an iK42 with 4-core speaker cables.
ONLINE
AES3 IN
OVERLAY
DANTE
ENTER
INPUT
UTILITY
OUTPUT
C
1
2
3
4
SELECT
ADJUST
CLP
/
+12
+6
OdBu
-12
Signal
BRIDGE
BRIDGE
OUT
Spk Over
Amp Over
Limit
-6dB
Signal
MUTE
ON
42
IK42
IK42
SXH218
SXH218
SXH218
SXH218
Wiring Two SXH218s from independent channels of an iK42 with 4-core speaker cables
1+
1+
1+
1+
1+
1+
1+
1+
1-
1-
1-
1-
1-
1-
1-
1-
2+
2+
2+
2+
2+
2+
2+
2+
2-
2-
2-
2-
2-
2-
2-
2-
4-CORE NL4 CABLE
4-CORE NL4 CABLE
4-CORE NL4 CABLE
4-CORE NL4 CABLE
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
AMP 1
AMP 2
AMP 3
AMP 4
Connected to Channel 1
Connected to Channel 2
SCHEMATIC