Crown XTi4000 Power Amplifier

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The XTi Series of Crown amplifiers are professional tools designed and built for portable PA applications. 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 DSP 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.

With their powerful, reliable performance, XTi-Series amps easily handle 2-ohm loads and are capable of chest-thumping lows. Plus, your investment in an XTi-Series amplifier is backed by Crown’s Three-Year, No-Fault, Fully Transferable Warranty.

Features

• Integrated proprietary DSP with LCD front panel display
• Accurate, uncolored sound with very low distortion for the best in music and voice reproduction
• Advanced protection circuitry guards against: shorted outputs, open circuits, DC, mismatched loads, general overheating, high-frequency overloads and internal faults
• Extremely versatile, handling a wide range of speaker impedances and outputs
• Switch-mode universal power supply
• Speaker presets for crossover frequencies, EQ, limiting, and delay
• All products fill 2U rack spaces and weigh under 17 pounds; weight sets a new standard in lightweight amps (20% less)
• Speakon® and binding post outputs, XLR inputs and loop-thrus
• Comprehensive LED status per channel

XTi 4000 Power:

• 8 ohms: 650W
• 4 ohms: 1200W
• 2 ohms: 1600W*
• 8 ohms bridged to mono: 2400W
• 4 ohms bridged to mono: 3200W*
• With 1% THD.

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: +/-0.25 dB from 20 Hz to 20 kHz at 1 watt into 4 ohms

Phase Response (at 1 watt, 20 Hz to 20 kHz): +/-15 degrees

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): 105 dB (A weighted)

Damping Factor: Better than 500 from 20 Hz to 500 Hz

Crosstalk: > 80 dB below rated power, 20 Hz to 1 kHz

Common Mode Rejection (CMR): > 45 dB from 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 degrees C to 40 degrees C at 95% relative humidity (non-condensing)

DSP Section

EQ: 4-band paragraphic per channel, boost/cut ±12 dB. Also adjustable high and low shelving filters

Filters: Highpass and lowpass per channel. Butterworth 6/12/18/24 dB per octave. High and low shelving filters, one per channel

Delay: For signal alignment of driver; 5 mS total delay

Subharmonic Synthesizer: Adds low-frequency content

Output Limiter: Prevents clipping

Presets: 10 user speaker presets

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: 3 buttons near the LCD screen are used to access menu items

LCD Screen: Backlit liquid crystal display shows speaker presets

Signal Indicator: Green LED, 1 per channel, flashes 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, 1 per channel, illuminates when the amplifier is ready to produce audio

Clip Indicator: Red LED, 1 per channel, turns on at the threshold of audible distortion

Temp/Fault Indicator: Red LED, 1 per channel, illuminates under Fault or excessive temperature conditions

Power Indicator: Blue LED illuminates when the amplifier has been turned on and has power

Rear Panel Controls and Connectors AC Line Connector: NEMA 5-15P (15A)

Input Connector: XLR, 1 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 overload damage; and high-frequency blowups. They also protect loudspeakers from input/output DC, large or dangerous DC offsets and turn-on/turn-off transients.