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Macro-Tech 5002VZ

Power Amplifier

Reference Manual

Crown specifications are guaranteed for three years.

In an effort to provide you with as much information as possible about the high power-producing capabilities of your amplifier,
we have created the following power matrices.

Minimum Guaranteed Power Specifications

Crown’s minimum power specifications represent the absolute smallest amount of output power you can expect from your
amplifier when it is driven to full output under the given conditions. Some spaces in each matrix may be left blank because the
same guarantee is not provided for those conditions—however, your amplifier will perform well under all conditions listed in
each matrix.

When measuring power, 0.1% THD appears to be the industry standard for distortion. Two of the maximum average power
specifications shown in each minimum power matrix are measured at 0.1% THD so you can easily compare Crown specifica-
tions to those of other manufacturers. But this high level of distortion actually allows for some clipping which is undesirable.
Because of this, a maximum average power specification at 0.05% THD is included in each minimum power matrix which
represents non-clipped conditions. Although most manufacturers do not give you power specifications at 0.05% THD, we en-
courage them to provide these specifications so you will have a more realistic representation of the way amplifiers should be
used in the real world—without a clipped output signal.

Fig. 6.1 Minimum Power Matrix

Many manufacturers publish power specs with a
tolerance of ±1 dB or worse. This means their am-
plifier can deviate more than 20% in output! A 100
watt amplifier would meet their specification if it
only produced 79.4 watts. Other manufacturers
qualify their specs by saying they are “typical,”
“subject to manufacturing tolerances,” “single
channel driven” or that they are specified with
“fuses bypassed.” Each of these statements effec-
tively removes any performance guarantee. In
fact, some manufacturers use these tactics to
generate large power numbers, and they don’t
even print a disclaimer. We take a different ap-
proach at Crown—our amplifiers are

guaranteed

to meet or exceed their specifications for three
years. Further, because our published specs are
set below our “in-house” measurements, you can
expect

every

Crown amplifier to

exceed

its pub-

lished minimum power specs. We believe you
should get what you pay for.

Minimum Power Notes:

All minimum power specifications are based on 0.1%
regulated AC mains and an ambient room temperature
of 70° F (21° C). Standard EIA power (RS-490) is not
identified here because it is identical to FTC Continu-
ous Average Power.

1. A 1 kHz sine wave is presented to the amplifier and

the output monitored for nonlinear distortion. The
level is increased until THD reaches 0.1%. At this
point, average power per channel is reported.

2. A sine wave is presented to the amplifier over the

range from 20 Hz to 20 kHz and the output moni-
tored for nonlinear distortion. The level at each fre-
quency is increased until THD reaches 0.1%. At this
point, average power per channel is reported.

3. A 1 kHz sine wave is presented to the amplifier and

the output monitored for nonlinear distortion. The
level is increased until THD reaches 0.05%. At this
point, average power per channel is reported.

4. Continuous power in the context of Federal Trade

Commission testing is understood to be a minimum
of five minutes of operation. Harmonic distortion is
measured as the RMS sum total and given as a per-
centage of the fundamental output voltage. This ap-
plies for all wattages greater than 0.25 watts.

Macro-Tech 5002VZ –

Minimum Guaranteed Power (Watts)

Stereo-Mono

Mode

Stereo

(both channels

driven)

Bridge-Mono

(balanced output)

Parallel-Mono

FTC Continuous Average

At 0.1% THD