Nxamp versus nx242: what’s new, What’s remaining the same, Dsp core – Nexo NUAR User Manual
Page 12: Level and latency, Software, What’s changed, Integrated amplifier, S remaining the same, Core, Evel and latency
NXAMP VERSUS NX242: WHAT’S NEW?
NXAMP versus NX242: What’s new?
The NXAMP Powered TDcontroller has been designed in order to provide ascendant
compatibility with its predecessor – the NX242 Digital TDcontroller.
What’s remaining the same?
DSP core
The DSP used in the NXAMP are from the same family (same core) than the one used in
NX242 and on the NXTENSION board. Thus algorithms such as EQ will perform exactly the
same on both platforms. However, since LOAD3_01, the firmware uses the full potential of
the NXAMP’s higher computing ressources (see further), leading to discontinuing
simultaneous firmware release for both platforms.
Level and latency
WARNING! Up to LOAD2_54, global delays due to analog to digital and/or digital
to analog as well as global gain were identical on NXAMP on one side and NX242 with 26dB
gain amplifiers on the other side. In LOAD2_55 and above, to minimize global latency
especially for wedge applications, the base latency of the NXAMP has been reduced to its
minimum, thus loosing the compatibility with NX242 family of products. Now with
LOAD3_01 and above, the setups themselves offer different level, EQ, crossover points and
protection algorithm which cannot fit into older hardware like NX242 or NX242ES4.
Software
Basic Menus and functions are more or less the same; only little learning curve is needed
to go from the NX242 to the NXAMP.
LOAD3_15 does not fit other hardware than NXAMP. Please use LOAD2_58 as
latest version for NX242 (with or without NXTENSION) and LOAD2_48 as latest
version for NX241 (with or without NXTENSION-CAI).
Note however, that the NXAMP can’t be flashed with LOADs prior to 2_46, and must always
use NXWIN 4 software embedded with the firmware in the archive file.
What’s changed?
Integrated amplifier
The most notable improvement is the integration of the amplifier module that will simplify
the cabling from the user point of view but also allow a much more efficient integration of
loudspeaker controller with the amplifier needs. Thus the digital controller becomes also an
amplifier controller. This is not simply two units inside the same box, but a powerful use of
the DSP resources for both cabinets and amplifier being driven.
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