Technical information

Page 9
Macro-Tech 5000VZ Power Amplifier
Reference Manual
1.3 Features
The Macro-Tech 5000VZ uses the very latest technology
and miniaturized design to provide the highest power and
value for its size, weight and price. Its patented Grounded
Bridge
™
circuitry offers many advantages over conven-
tional designs. In Stereo mode, the amplifier’s separate
high-voltage supplies and ultra-low crosstalk make it pos-
sible to treat each channel as an independent amplifier.
Here are some more of its impressive features:
 Patented Variable Impedance (VZ) power supplies for
each channel provide the best power matching to your
load. Three special modes are provided to control how
and when the supplies shift impedance modes.
 Crown’s
Grounded Bridge design delivers extreme volt-
age swings without using easily stressed output transistor
configurations like conventional amplifiers. The results
are lower distortion and superior reliability.
 Patented
ODEP (Output Device Emulation Protection)
circuitry detects and compensates for overheating and
overload to keep the amplifier working when others
would fail. In addition,
ODEP can be used to control the
VZ power supplies by shifting them into high-current
mode based on the requirements of the immediate con-
ditions.

IOC
®
(Input/Output Comparator) circuitry immediately
alerts you of any distortion that exceeds 0.05%, providing
dynamic
proof of distortion-free performance .
 Enhanced
PIP2 (Programmable Input Processor) design
accepts accessory modules that tailor the amplifier to suit
individual applications, including wide-band load current
monitoring.
 Convenient front panel indicators include an Enable indi-
cator for the low-voltage power supply, and an
ODEP ,
Signal Presence/
IOC and I
Load
/I
Limit
indicator for each
channel.
 Full protection against overvoltage, shorted outputs, mis-
matched loads, general overheating, DC and
high-frequency/RF overloads. Full internal fault protec-
tion.
 “Standby” mode protects loudspeakers from low-
frequency/DC output, turn-on/turn-off transients and other
transients that can occur during an AC brownout.
Standby mode also provides overvoltage protection from
AC mains of more than 11% over the rated voltage.
 Innovative Loudspeaker Offset Integration (LOI) circuitry
prevents asymmetrical audio waveforms from causing
off-center woofer cone movement.
 Each channel has an independent, error-driven com-
pressor that can be set for fast or slow attack and release
times.
 Two custom toroidal power transformers (one per chan-
nel) provide maximum power transfer with minimum
electromagnetic fields.
 The soft-start feature slowly brings the power supplies up
to full voltage to avoid tripping the breaker that protects
your AC wiring.
 Universal power supplies can be easily reconfigured for
different AC mains voltages, making the amplifier conve-
nient for use around the world.
 Low harmonic and intermodulation distortion give the
best
dynamic transfer function in the industry.
 Superior damping factor delivers maximum loudspeaker
motion control.
 Balanced inputs for each channel have independent
three-way input sensitivity switches.
 The factory-installed PIP2-FXQ includes a ground lift
switch that can be used to isolate the AC (chassis)
ground from the XLR and phone jack input grounds.
 Internal test ports provide rapid manufacturing and ser-
vice diagnostics.
 Internal diagnostics LEDs make it easy to identify internal
operating conditions in the field.
 Modular design makes service and maintenance much
more convenient.
 The super-efficient cooling system features front-to-back
air flow with cutting edge heat sinks and proportional on-
demand forced-air cooling to prevent overheating and
prolong component life.
 New touring chassis is extremely rugged and has been
torture-tested with over 100,000 miles of simulated road
abuse—even passing mil. spec. shock and vibration
testing.
 Extruded aluminum front panel provides extra strength to
resist physical damage.
 Rack mountable in a standard 19-inch (48.3-cm) equip-
ment rack (the back of the amplifier should be supported)
or units can be stacked directly on top of each other.
 Three year “No-Fault” full warranty completely protects your
investment and guarantees its specifications.