Minimum Power Matrix - Crown Macro-Tech 5002VZ Reference Manual

Macro-Tech 5002VZ Power Amplifier
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.
Macro-Tech 5002VZ –
Stereo-Mono
At 0.1% THD
(See note 1)
Mode
1 kHz
2 2500
Stereo
4 2000
(both channels
driven)
8 1300
4
5000
Bridge-Mono
8 4000
(balanced output)
16 2600
1 5000
Parallel-Mono
2 3700
4
2600
2 2375
Stereo
4 1865
(both channels
driven)
8 1250
4 4725
Bridge-Mono
3700
8
(balanced output)
16 2490
1 4695
Parallel-Mono
2 3730
2490
4
2525
2
Stereo
1985
4
(both channels
driven)
8 1310
5070
4
Bridge-Mono
3935
8
(balanced output)
2645
16
5085
1
Parallel-Mono 3960
2
2635
4
Fig. 6.1 Minimum Power Matrix
Reference Manual
Crown specifications are guaranteed for three years.
Minimum Guaranteed Power (Watts)
Maximum Average FTC Continuous Average
At 0.1% THD At 0.05% THD
(See note 2) (See note 3)
20Hz-20kHz 1 kHz 1 kHz
2155 2325
1775 1995 1865
1090 1295
1295
4875
3670 3970 3790
1875 2550 2570
4945
3700 3790
2570 2580
2340
1740 1835 1770
1065 1235 1230
4670
3355 3650 3635
2120 2425 2455
4630
3675 3470
2465 2455
2430
1760 1965
1070 1285 1240
5025
3525 3910
2150 2600 2605
5025
3920
2615 2605
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
At 0.1% THD
only produced 79.4 watts. Other manufacturers
(See note 4)
qualify their specs by saying they are "typical, "
20Hz-20kHz
"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
1030
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
2035
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:
1015
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.
2015
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-
1015
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
1985
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.
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