Crown PT 2.1 - Manual

Intermodulation Distortion (IMD):

(60 Hz and 7

kHz 4:1) Less than 0.05% from less than 171
milliwatts to full bandwidth power.

Damping Factor:

Greater than 1,000 from 10

Hz to 400 Hz.

Crosstalk:

Greater than 90 dB below full band-

width power from 50 Hz to 2 kHz, rising linearly
to greater than 66 dB at 20 kHz.

Controlled Slew Rate:

Greater than 13

volts/ms.

Voltage Gain:

66:1 ±6% or 36 dB ±0.5 dB at

0.775-volt sensitivity; 36:1 ±6% or 31 dB ±0.5
dB at 1.4-volt sensitivity; 20:1 ±6% or 26 dB
±0.5 dB at the maximum level setting.

Power

Output Power:

PT 2.1

P O W E R - T E C H S E R I E S

• Rugged, professional power amplifi er built

for the road.

• Quick-access front panel power switch and

level controls. Turn-on delay for loudspeaker
protection.

• Patented

ODEP

®

circuitr y and

Grounded

Bridge

™ design combine to provide perfor-

mance and reliability that surpass traditional
designs.

• Easy to read signal presence (SPI) and distor-

tion (

IOC

®

) indicator for each channel.

• H i g h d a m p i n g f a c t o r p r o v i d e s s u p e r i o r

control over low-frequency drivers for a

clean, accurate low end.

• Bridge-Mono and Parallel-Mono modes make

it easy to optimize the amplifier’s perfor-
mance for a wide range of loads.

• Balanced phone jack inputs in parallel with

XLR input connectors.

• Complete protection against shorted outputs,

mismatched loads, overheating, input/output
DC and high-frequency overload; full internal
fault protection.

• T h r e e - y e a r, N o - F a u l t , f u l l y - t r a n s f e r r a b l e

warranty completely protects your investment
and guarantees its specifi cations.

I

t’s hard to please every crowd. But you’ll
have a better chance when you use a Crown
Power-Tech .1 Series amplifi er. Musicians

and DJs alike demand a lot from their sys-
tems—clean, punchy sound; reliability; rug-
gedness; smaller size; less weight—all at a
reasonable price. And Crown PT .1s bring
these benefi ts and much more to the table.
That’s because at Crown, we’ve built our repu-
tation around legendary sound and support.

Power-Tech .1 Series amplifi ers are compact,
professional stereo power amplifi ers engi-
neered to meet the most demanding sound
reinforcement needs. They compare very
favorably to more expensive amplifi ers, pro-
viding uncolored sound and signal-to-noise
ratios commonly associated with recording
studios. Plus, every Power-Tech .1 amplifi er is
backed by Crown’s unequaled Three-Year, No-
Fault, fully-transferrable warranty that covers
everything.

With over fi ve decades of experience designing
and building rock-solid products, Crown is the
standard in amp technology. So check out the
affordable, “all-Crown” Power-Tech .1. They
are a powerful argument for quality and value!

For more details about the Power-Tech .1
Series, contact the Crown Technical Support
Group at 800-342-6939 or 219-294-8200.
Also, visit the Crown Audio website at
www.crownaudio.com.

Specifi cations

The following applies to units in Stereo mode with 8-ohm loads
and an input sensitivity of 26 dB unless otherwise specifi ed.

120 VAC, 60 Hz Units:

refers to amplifi ers with dedicated

transformers for 120 VAC, 60 Hz power mains.

International Units:

refers to amplifi ers with special multi-tap

transformers that make them confi gurable for several AC
mains voltages and line frequencies.

Performance

Frequency Response:

±0.1 dB from 20 Hz to

20 kHz at 1 watt.

Phase Response:

±10 degrees from 10 Hz to

20 kHz at 1 watt.

Signal-to-Noise:

A-weighted, better than 105

dB below full bandwidth power. Better than 100
dB below full bandwidth power from 20 Hz to
20 kHz.

Total Harmonic Distortion (THD):

Less than

0.05% at full bandwidth power from 20 Hz to 1
kHz increasing linearly to 0.1% at 20 kHz.

Load Impedance:

Safe with all types of loads.

Rated for 4 to 8 ohms in Stereo, 8 to 16 ohms
in Bridge-Mono and 2 to 4 ohms in Parallel-
Mono mode.

Required AC Mains:

Power requirements are

provided on each unit’s back panel. 120 VAC,
60 Hz and 100/120/220/240 VAC, 50 to 60
Hz (non-convertible) units are available. Rated
AC mains voltages are ±10%. Quiescent power
draw is 90 watts or less. 100 and 120 VAC units
draw up to 10 amps of current; 220 and 240
VAC units draw up to 5 amps.

Low-Voltage Power Supply:

A ±24 VDC fan-

former supply (fan motor winding) regulated to
±15 VDC.

AC Connector:

An appropriate AC line cord and

plug are provided. North American units have
a standard 3-wire, 15-amp grounded connector
(NEMA 5-15P).

Controls

Power:

A front panel push button switch used

to turn the amplifi er on and off. It is also a
circuit breaker for the power supply.

Level:

A front panel rotary potentiometer for

each channel used to control the output level.

Stereo/Mono:

A three-position back panel

switch used to select Stereo, Bridge-Mono or
Parallel-Mono mode.

Sensitivity:

A three-position switch behind the

input module used to select the input sensitivity
for both channels: 0.775 volts or 1.4 volts for
standard 1 kHz power, or 26 dB voltage gain.

Features

For more details about the Power-Tech .1
Series, contact the Crown Technical Support
Group at 800-342-6939 or 219-294-8200.
Also, visit the Crown Audio website at
www.crownaudio.com.