PORTABLE PA
• 37
www.crownaudio.com
SPECIFICATIONS
Performance
Voltage Gain at 1kHz, 8 ohm rated output:
XTi 1000: 30.5 dB.
XTi 2000: 32.9 dB.
XTi 4000: 34.2 dB.
Frequency Response: +0/–1 dB from 20 Hz to 20
kHz at 1 watt into 4 ohms.
Load Impedance: Safe with all types of loads.
Rated for 2 to 8 ohms in Stereo mode, 4 to 16
ohms in Bridge-Mono mode.
Sensitivity: 1.4V.
Signal to Noise Ratio (below rated 1 kHz power at
8 ohms): 100 dB (A weighted).
Damping Factor: Better than 500 from 20 Hz to
400 Hz.
Crosstalk: > 70 dB below rated power, 20 Hz to
1 kHz.
Input Stage: Input is electronically balanced and
employs precision 1% resistors.
Input Impedance (nominal): 20 k ohms, balanced;
10 k ohms, unbalanced.
Maximum Input Signal: +22 dBu typical.
AC Line Voltage and Frequency Configurations
Available: 100V, 120V, 220-240V, 50/60 Hz.
AC Line Current:
XTi 1000: 6.5A.
XTi 2000: 6.9A.
XTi 4000: 8.0A.
At Idle: Draws no more than 90 watts.
Operating Temperature: 0° C to 40° C at 95%
relative humidity (non-condensing).
DSP Section
Input EQ: 6 parametric fi lters per channel with
adjustable Q, ±15 dB boost/cut. Also adjustable
high and low shelving fi lters. This 8-fi lter EQ
section can be bypassed.
Crossover Filters: Highpass and lowpass
per channel. Butterworth 6/12/18/24 dB per
octave. Linkwitz-Riley 24/48 dB per octave. Also
includes ±15 dB bandpass gain and polarity
control.
Delay: For signal alignment of driver; 50 mS
total delay.
Subharmonic Synthesizer: Takes the low-fre-
quency content of the input signal and “synthe-
sizes” a new signal that is the same as the input
signal but one octave lower. The new synthe-
sized signal is then mixed with the original signal
to create the effect.
Output Limiter: Prevents clipping.
Presets: 20 presets, 19 of which are user-
defi nable.
Front Panel Controls and Indicators
Level: Detented rotary level control, one per
channel.
Power Switch: On/off switch applies AC power to
the amplifier.
Sel/Prev/Next Buttons: Three buttons near the
LCD screen are used to access menu items and
front panel lockout.
LCD Screen: Backlit liquid crystal display shows
speaker presets.
Signal Indicator: Green LED, one per channel, illu-
minates when a very low-level signal is present at
input. May be used for troubleshooting cable runs.
–10 Indicator: Green LED flashes when output
signal exceeds –10 dB below clip.
–20 Indicator: Green LED flashes when output
signal level exceeds –20 dB below clip.
Ready Indicator: Green LED, one per channel,
illuminates when the amplifier is ready to produce
audio.
Clip Indicator: Red LED, one per channel, turns on
at the threshold of audible distortion.
Temp Indicator: Red LED, one per channel, illumi-
nates under excessive temperature conditions.
Power Indicator: Blue LED illuminates when the
amplifier has been turned on and has power.
Back Panel Controls and Connectors
AC Line Connector: NEMA 5-15P (15A).
Input Connector: XLR, one per channel.
Link/Out Connector: Loop-thru signal from input
connector for linking to another amplifier, one per
channel.
Output Connectors: Two Neutrik
®
Speakon
®
NL4MP (mates with NL4FC) output connectors.
Channel-1 Speakon
®
is wired with Ch. 1 and Ch.
2 outputs for use with optional single 4-conductor
cable. Two binding post outputs (in parallel with
Speakon
®
connectors).
HiQnet USB Connector: Type B, connects to a
HiQnet network.
Protection
XTi-Series amplifiers are protected against shorted,
open or mismatched loads; overloaded power
supplies; excessive temperature; chain destruction
phenomena; excessive output current, input over-
load damage; and high-frequency blowups. They
also protect loudspeakers from input/output DC,
large or dangerous DC offsets and turn-on/turn-off
transients.
Construction
Chassis: Steel.
Cooling
Proportional speed fan with front-to-rear airflow.
Dimensions
EIA Standard 19-in. (48.3-cm) rack mount width
(EIA RS-310-B), 3.5 in. (8.9 cm) high and 12.25 in.
(31.11 cm) deep behind mounting surface.
Weight
Net Weight: 18.5 lb (8.4 kg).
Shipping Weight: 21.5 lb (9.8 kg).
Regulatory Certifications
Other Applications
Note: Specifications apply to units in Stereo mode with
8-ohm loads and rated input sensitivity unless other-
wise specified.
T
he XTi Series of Crown
®
amplifiers are professional tools designed and built for portable PA appli-
cations. The series includes three models which are identical except for output power: XTi 1000,
2000 and 4000. All are rugged and lightweight, and offer unmatched value in their class. XTi-Series
amplifiers feature an LCD screen with speaker presets for crossover frequencies, EQ, limiting, delay,
and a subharmonic synthesizer. Other features include a switch-mode universal power supply, useful
function indicators, proportional-speed fan-assisted cooling, XLR inputs, Speakon
®
and binding-post
outputs, short-circuit protection and more.
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