Technical information
Page 36
Macro-Tech 5000VZ Power Amplifier
Reference Manual
Maximum Power Specifications
Crown’s maximum power specifications represent the largest amount of output power you can expect from your amplifier
when it is driven to full output under the given conditions. These specifications can be used to prevent loudspeaker and
hearing damage.
The maximum power matrices include specifications for single cycle and 40 millisecond burst sine waves. Burst signals
act like large transient peaks that are present in common source signals. Loudspeakers can respond to a single cycle
burst, so the single cycle burst specifications should be used to help you protect your loudspeakers. In contrast, a
40 millisecond burst represents the typical response time of the human ear. Your ear will not respond to the entire
dynamic change of a burst that lasts less than 40 milliseconds.
The burst power specifications are provided at 0.05% THD which is a practical low distortion condition. Operating the
amplifier at levels higher than 0.05% THD can result in output power levels that are higher than those listed in the
maximum power matrices.
Fig. 6.2 Maximum Power Matrix
Maximum Power Notes:
All maximum power specifica-
tions are based on 0.1% regu-
lated AC mains and an ambi-
ent room temperature of 70°
F (21° C). Although it is an
unusual condition, your ampli-
fier can function well with AC
mains voltages up to 10%
over the specified line volt-
age. With overvoltage condi-
tions, your amplifier may be
capable of delivering instan-
taneous power levels up to
20% greater than the specifi-
cations in the matrix.
1. A single cycle sine wave
is presented to the ampli-
fier and monitored for non-
linear distortion. The aver-
age power during the
burst is reported. Loud-
speakers must be able to
withstand this level if they
are to be safely used with
this amplifier.
2. A 40 millisecond sine wave
burst (10 percent duty
cycle) is presented to the
amplifier and monitored for
nonlinear distortion. The
average power during the
burst is reported. This
power level is a measure-
ment of the amplifier’s
maximum transient power
that can be perceived by
the human ear.