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Delta Series – Non-DSP Models Operating Instructions
Connecting To Your Amplifier: Speaker Outputs
For all four channel amplifiers (and excluding the Delta 120):
The speaker outputs are via Neutrik Speakon connectors. 2 pole (NL2FC) or 4 pole (NL4FC)
connectors can be used.
Pin 1+: Hot
Pin 1-: Cold
Additionally, Channel 1 Speakon connector carries Channel B2output on Pins +2 & -2 to allow
easy bi-amping or bridged operation using a single NL4 connector. Similarly, Channel 3’s
Speakon connector also carries Channel 4 output.
Output Connector 1
Pin 2+: Hot Ch. 2
Pin 2-: Cold Ch. 2
Output Connector 3
Pin 2+: Hot Ch. 4
Pin 2-: Cold Ch. 4
For bi-amped operation, connect as above.
For the Delta 120 two channel amplifier:
Bridging is NOT possible on the Delta 120.
Due to the high output currents involved, each
channel’s Speakon connector uses both pairs of poles as below:
Pin 1+: Hot
Pin 1-: Cold
Pin 2+: Hot
Pin 2-: Cold
There must be no shared connections between channels.
Negative output terminals must not be joined together as they are not both at ground
potential. Connecting them together will damage the amplifier and void the warranty!
As the currents involved are very high, and to ensure best performance, the speaker cables
should be kept as short as possible and conform to the following minimum requirements:
Delta 40 NON-DSP, 11A into 4 Ohm speaker loads
Delta 80 NON-DSP, 11A into 4 Ohm speaker loads
Delta 100 NON-DSP, 11A into 4 Ohm speaker loads
Delta 120 NON-DSP, 11A into 4 Ohm speaker loads
SP
E
A
K
O
N
NL
2
&
N
L
4
SP
E
A
K
O
N
NL
2
&
N
L
4
