All material © 2010 Martin Audio Ltd. Subject to change without notice 20
3 DSP
3.1 Menu changes
The addition of a KDSP board converts a standard MA12K to a 12K DSP. This can be done at the time of
ordering or retrospectively at a later date. New firmware in installed which causes some reorganization of the
K-Series menu. The main differences are the division of the Settings menu into two (or more) submenus,
one for the amplifier-related settings, one for the KDSP settings and the other for additional add-on board,
and the introduction of a local presets menu from which the user will be able to store and recall to/from local
memory all settings entered both on the amplifier and KDSP.
The amplifier settings menu is almost the same as the “Settings” menu of the non-DSP version. The only
differences are the introduction of an input selection command and the new idle mode function.
The input selection can be used to switch from analog input to digital AES3 input, with or without DSP
processing.
The idle mode function is a power saving feature. When activated, the output stage switches off if the
amplifier doesn’t detect an input signal for the user defined amount of time. This saves about 40 W of power
per channel. This means reduced heat, longer amplifier and fan life, and lower electricity bills for
permanently powered, fixed installation systems.
A menu locking feature in the Setup menu and an amplifier name feature in the Display menu have been
added.
The DSP settings submenu is the menu from which all the DSP processing parameters can be entered. See
the following pages for details.
3.2 Single value numeric parameters input
The numeric input mode has been extended with a fine/coarse feature to cater for the large number of
parameters now available.
When you edit a parameter, you start in the “fine” mode. The steps applied by the – and + keys are the
minimum allowable for that parameter.
You can switch to the “coarse” mode by clicking the “fast” key. The “fast” key will be renamed “slow”.
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