Martin Audio OmniLine Portable Speaker User Manual

The Martin Experience

All material © 2008. Martin Audio Ltd. Subject to change without notice.

Powering your
OmniLine

®

(For general system preparation, see the OmniLine
system preparation - preliminary guidance)

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Powering your OmniLine

(For general system preparation, see the OmniLine system preparation - preliminary guidance)

General

Your OmniLine
may be separated into smaller blocks or individual modules, linked and paralleled to other blocks or
modules using short link wires - or series connected to other blocks or modules using the series
Connector pcb supplied with each four-module block (see illustration below).

The Connector pcb also provides an input termination.

This allows the installer to build an array of appropriate length (we recommend 6% of each plane to
be covered for good spectral balance) with electrical characteristics best suited to the Martin Audio
power amplifier chosen.

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is delivered in blocks of 4 modules ready wired in parallel. These four-module blocks

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Amplifier choices and limiter settings

The following chart shows Martin Audio power amplifier choices (indicated by dots) and Martin Audio
DX1.5 or DX2 limiter settings (in red) to obtain optimal performance from the wide range of OmniLine
array sizes and patch configurations possible.

Single channels, two channel and four channel configurations are shown. Multi-channel configurations
are useful where zone control may be required.

To avoid amplifier clipping (which dumps excessive power into the HF arrays in the form of odd-order
harmonics) it is best to choose the highest power amplifier in the range indicated. Note that power
amplifiers must be set to the industry standard maximum voltage gain of 32dB (x40) with a correctly
limited DX1.5 or DX2 system controller to comply with warranty conditions.

(This chart is repeated full-size on the next page for easy reference)

ClipLim settings

Martin Audio loudspeakers are AES power rated. AES ratings allow for up to 6dB voltage (4 x power)
instantaneous peaks. We therefore recommend that you set your DX1.5 or DX2 output channel
ClipLims to +6dB.

Controller presets?

Note that we do not publish fixed presets for the OmniLine – apart from recommending a standard
60Hz high pass filter and the required limiter settings. The OmniLine Software – used to optimise the
array shape – also generates the controller settings required for a flat in-situ system response or to
meet your chosen house curve using the Optimise EQ function.

2

3

OmniLine array patches

Single OmniLine modules are 16 ohm elements. Four modules are supplied in each carton. These
four modules are connected in parallel to form a standard 4 ohm block but may be reconfigured,
paralleled or series connected to provide a wide variety of series/parallel configurations chosen from
the preceding chart.

Please note that if you don’t understand series and parallel electrical configurations, you
are strongly advised to enlist the advice of a profession sound system technician or
experienced installer.

Single channel configurations

1 module array (16 ohms)

2 module array (8 ohms)

4 module array (4 ohms)

4

6 module array (2.67 ohms)

6 module array (10.67 ohms)

5

8 module array (8 ohms)

12 module array (5.3 ohms)

6

16 module array (4 ohms)

7

24 module array (2.67 ohms)

8

Two channel configurations

6 module array (5.34 ohms per channel)

8 module array (4 ohms per channel)

9

12 module array (2.67 ohms per channel)

10

16 module array (8 ohms per channel)

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24 module array (5.3 ohms per channel)

12

Four channel configurations

16 module array (4 ohms per channel)

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24 module array (2.67 ohms per channel)

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