All material © 2010 Martin Audio Ltd. Subject to change without notice
23
3.6
Menu locking
In addition to the basic push-button locking function, a new menu locking strategy has been introduced for
the DSP version of the amplifier.
There are three levels of locking:
All locked
Information may be displayed but not altered. Presets cannot be loaded
Allow safe
User can change from Analog input to AES3 input with DSP into the signal path. Some common
DSP parameters can be changed (AES gain trim, main delay, DSP input selection).
Only local presets can be recalled, and they should all be safe for the speaker system connected to
that amplifier (example: HF driver –3 dB, HF driver 0 dB, HF 3 dB).
Allow all
All settings menus are enabled. User can recall presets from either local memory or smartcard.
Local presets can be made Read-Only by enabling the “Lock presets” function, in order to preserve
the original settings stored on the amplifier.
The lock code, when set different from 000000, protects the whole Menu locking submenu.
3.7
Amplifier name
The amplifier name, together with the current preset name, can be displayed by enabling the “Display
amplifier data” function. The 20-character amplifier name and the 40-character preset name are shown
differently when the amplifier is in the starting page of the main menu. The amplifier name can be assigned
via the “Edit amplifier name” command (see
Handling local presets
above).
3.8
DSP signal path
The KDSP board embeds a very advanced digital signal processor.
There are some features found only in high level sound processors, and some new utilities that can only be
implemented in a completely integrated DSP/amplifier system.
A complete block diagram of the processing chain is shown below
