1
Introduction
The
NEAR
®
7XL Power Amplifier
is a highly flexible and intelligent digital audio,
2-channel, Class-D power amplifier, delivering up to 700W per channel @
4/8/16
Ω
and 70V/100V Constant Voltage Lines, in Direct Drive, without using
internal output transformers. A Line Output is also available with independent
DSP parameters for driving additional line-level devices.
To guarantee maximum reliability, the two powered output channels include highly
efficient Class-D amplifiers, with independent Switch Mode Power Supplies,
including Power Factor Correction, powering each amplifier channel in Bridge
Tied Load (BTL) mode. The two amplifier output stages are very low noise and
low distortion with efficiency up to 90%, and are also equipped with a full set of
circuit protections.
Designed to meet the most demanding residential sound system applications,
NEAR 7XL’s set of sophisticated controls and parameters for loudspeakers are
implemented using a powerful Digital Signal Processor (DSP) running at
48kHz/24bit, and include high-performance 24bit AD/DA Converters. User
controlled parameters such as matrix routing, Noise Gate, up to 48dB/Oct IIR
HP/LP filters for crossover, parametric EQs (Bell, Notch, Variable Q HI/LO
Shelving, and HI/LO Pass filters), RMS Compressor, Peak Limiter, polarity, and
alignment delay are available. All in all, everything needed to optimize loud-
speaker performance is provided by the NEAR 7XL. Moreover, each input/out-
put channel provides internal limiting process monitoring to prevent Overflow
Clipping from occuring in the signal path. Efficient heat dissipation mechanisms
and over-temperature protection are implemented, which ensure reliability
without compromise. A useful Pink/White noise generator is included to facilitate
system setup. All setup parameters for input/output DSP are easily accessible
by using the remote GUI application.
