Crown PowerTech PT 2.1 - User 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
POWER-TECH SERIES
• 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
®
circuitry 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.
• High damping factor provides superior
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.
• Three-year, No-Fault, fully-transferrable
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.

Summary

Features

Specifications

Performance

Key performance metrics including frequency response, phase, and signal-to-noise ratio.

Intermodulation Distortion (IMD)

Specifies IMD levels across different power outputs and frequencies.

Damping Factor

Indicates amplifier's control over speaker drivers at low frequencies.

Crosstalk

Measures signal leakage between channels at various frequencies.

Controlled Slew Rate

Defines the maximum rate of voltage change the amplifier can output.

Voltage Gain

Details the amplifier's voltage amplification levels at different sensitivities.

Power

Output Power

Lists power output in watts for 4-ohm, 8-ohm, and bridged configurations at different frequencies.

Controls

Power Control

Front panel push button for power and circuit breaker function.

Level Control

Rotary potentiometer for adjusting output level per channel.

Stereo;Mono Mode

Back panel switch for selecting Stereo, Bridge-Mono, or Parallel-Mono.

Sensitivity Selection

Switch for selecting input sensitivity (0.775V, 1.4V, or 26dB).

Indicators

Enable Indicator

Red indicator shows low voltage power supply status.

Signal;IOC Indicator

Dual-color indicator showing signal presence and distortion.

Input;Output

Input Connectors

Balanced 1/4-inch phone jacks and XLR connectors in parallel.

Input Impedance

Specifies input impedance for balanced and unbalanced connections.

Output Connectors

Two sets of color-coded binding posts for speaker connections.

Output Impedance

Defines output impedance characteristics of the amplifier.

DC Output Offset

Measures DC voltage offset at the amplifier outputs.

Output Signal

Stereo Output

Describes unbalanced, two-channel output configuration.

Bridge-Mono Output

Describes balanced, single-channel output configuration.

Parallel-Mono Output

Describes unbalanced, single-channel output.

Protection

Construction

Crowns Three-Year, No-Fault, Fully Transferable Warranty

Crown PowerTech PT 2.1 Specifications

General

Brand	Crown
Model	PowerTech PT 2.1
Category	Amplifier
Language	English