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The audio input on the SB218 SUB amplifier is a balanced line level XLR type, with a paralleled THRU
connection for linking to other speakers. The level control ONLY affects the amplifier being adjusted,
so other amplifiers using the linked signal remain unaffected.
For best noise rejection, it is recommended that only balanced cables are used.
4.3.
DSP Presets
There are 8 factory-set presets available on the SB218 SUB cabinets. Below is a description of the
preset modes and their functions.
The VIA 8 and 12 cabinets feature an FIR crossover that introduces a latency of 5.3ms into the
amplification system. This is already accounted for in the VIA SUB and SUB-218 subwoofers, but
must be taken into account if any other speakers are used in the same system.
The SB218 SUB features 4 different factory pre-set modes to adjust the high pass and low pass filters
in the DSP software.
Preset 1: 30-80Hz Standard Mode
Preset 2: 30-60Hz Infra Mode
Preset 3: 30-80Hz Cardioid Mode
Preset 4: 30-60Hz Infra Cardioid Mode
Preset 5: User Preset
Preset 6: User Preset
Preset 7: User Preset
Preset 8: User Preset
Usage Example – Small indoor event using SB218 SUB for all low frequency
In this situation, it is recommended to use preset 1 for full low frequency production.
Usage Example – Large event with suspended VIA SUB and ground-stacked 218 SUB.
In this situation it is recommended that the VIA SUB be used to reinforce the mid low output from
the line array. The SB 218 SUB can be used for the 30-60Hz band, whilst the VIA SUB can be used 50-
100Hz. There are also situations where the 218 SUB can be used 30-100Hz, overlapping the VIA SUB
as long as care is taken to align the outputs correctly. This can be done using the available user
presets.
