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The Precision Series™ (P-Series), EV´s top line of power am-
plifiers, has become a world standard in touring business.
Their extr
eme reliability, high-level sound and durable design
make them the amp of choice for the Rolling Stones´ world
concert tours. A two-year tour is torture for any piece of
touring equipment and EV´s speakers and amplifiers did an
outstanding job, not only fr
om an acoustical point of view.
During the two-year period, only one fuse blew on one of
the amplifiers!
All EV amps are equipped with a unrivalled and complete
protection and safety package for maximum sound perform-
ance. Their technical specifications r
epresent the highest
league of professional power amplifiers. Precision Series™
guarantees, among other things, outstanding transient
response for uncomplicated sonic reproduction of the origi-
nal signal, and extr
emely low dynamic distortion to ensure
excellent sound quality. Q-Series and CPS-Series are based
on Precision Series™.
All EV Amplifiers feature:
Q-Series
Dynamic Headroom
1 % THD
30% Dynamic headroom of a Q66 amplifier
• Dynamic audio limiters (shown right)
• Switchable limiter time constant (P-Series)
• Peak current limiters
• Inrush current limiters
• Turn-on delay (“soft-start“)
• Excessive high frequency (RF) protection
• Excessive Back-EMF protection
• DC fault protection
• Shorted loads protection
• High temperature protection controls thermal over-
load of the power transistors and the transformer
• Low-noise 3-stage resp. 4-stage fans with
front-to-rear airflow
• Up to 30 % headroom of power capability
• Generous power-supply construction
• Flexible Input routing (mono parallel, stereo)
• Stable and safe operation on 2 ohms load
• Bridge-mode operation on 4 ohms load
• Highest quality standard: Made in Germany
• High-level sound performance
• Extreme reliability
Q-Series is based on EV´s world famous P-Series. They con
-
tain all features listed above and guarantee the same high
quality, in cost-effective packages of 2 x 450 W and 2 x
600 W output power.
Q-Series comes up in a stable 3-RU zinc-plated steel housing
with rear-mounted dB-scaled level controls.
Q 44 Q 66
Continuous rated power (1k Hz, THD 1 %)
2 ohms 650 watts 850 watts
4 ohms
Ω
450 watts 600 watts
8 ohms 280 watts 380 watts
Continuous rated power (20 - 20k Hz, THD < 0,2%)
4 ohms 350 watts 500 watts
8 ohms
230 watts
300 watts
Max. bridged output
4 ohms 1,300 watts 1,700 watts
8 ohms 900 watts 1,200 watts
Slew rate > 25 V / µs > 30 V / µs
T
otal Har
monic Distor
tion < 0.05 % < 0.05 %
Intermodulation Distortion (SMPTE) < 0.08 % < 0.08 %
DIM 30 < 0.03 % < 0.03 %
Damping factor 100 Hz / 1000 Hz > 300 / > 200 > 300 / > 200
Crosstalk (at 1.000 Hz) < 80 dB < 80 dB
Signal-to-noise ratio (dB A-weighted)
> 105 dB > 105 dB
Input Impedance (balanced) 20k Ω 20k Ω
Input Sensitivity (0 dBu factory setting) 0 dBu / +6 dBu 0 dBu / +6 dBu
Input connectors, parallel out XLR in/out XLR in/out
Output connectors
Speakon (Pin 1)
Speakon (Pin 1)
Dimensions (H x W x D) 133 x 483 x 386 mm 133 x 483 x 386 mm
5.25” x 19”x 15.7” 5.25” x 19” x 15.7”
Net weight 15 kg (35.2 lbs.) 16 kg (35.2 lbs.)
59
600W
780W