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Crown XTi 4002

Power amplifier — 650 watts RMS x 2 at 8 ohms (1600W x 2 at 2 ohms)

Item #: 859XTI4002

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Power and protect your system

Crown's XTi 2 Series power amplifiers don't just make your speakers sing — they serve as vital lynchpins for your sound system, allowing your music to reach the masses without compromise or overexertion. The Crown name on the front of these amps ensures you've got a trustworthy power source that's loaded with innovative features, like advanced limiters that give you full control, plus integrated signal processing tools for dialing in the perfect tone. When it's time to raise the hair on the back of the crowd's neck, a Crown XTi 2 amplifier does the heavy lifting for you.

Crown XTi 4002 power amplifier

The rear of the XTi 4002 power amplifier offers XLR inputs, plus Speakon and binding post outputs, as well as loop-through XLR Link/Out output connectors.

Heavy-duty juice

The Crown XTi 4002 amplifier serves up 650 watts RMS per channel at 8 ohms, 1200 watts per channel at 4 ohms, and up to 3200 watts in bridged mode. The proportional speed fan features three user-defined settings — normal, early, and full-speed — to help keep things cool within the front-to-rear airflow system. The universal tracking switch-mode power supply maintains efficiency and reliability. Steel construction with a cast aluminum front panel helps keep this dynamo robust under repeated use.

Up front the amp boasts independent level control knobs and LEDs, an on/off switch, LCD screen, and three menu control buttons. You'll be able to monitor the amp's presets and processing status through the LCD screen.

The Crown XTi 4002 offers balanced XLR inputs, as well as binding posts and Neutrik Speakon® outputs for the speakers, plus XLR loop-thru connectors for connecting additional amps. Integrated cast aluminum rack handles promote smooth transport between the van and the gig, and these amps are eminently rackable and stackable.

Push it to the limit

Looking for a way to push your sound to the edge without going too far afield? Crown's Peakx Plus Limiter technology gives you total control over threshold, attack, and release times, so you can dial in your sound at the boundaries without worry about excess stress on your system. It's defeatable, just in case you want to work around it.

Built-in processing

The XTi 4002 gives you plenty of options for shaping your sound from the rack. It's got 6 parametric filters per channel for the input EQ, plus high- and low-pass crossovers. 8 parametric filters per channel on the output EQ give you further adjustments. You also get built-in delay and 30 total presets, 29 of which are user-defined.

Crown's SubHarmonic Synth feature takes your low-frequency signal, then "synthesizes" a new signal with the same characteristics, just one octave lower. The XTi 4002 sums the two signals and sends the result to your subwoofer. You can adjust for frequency, gain, and filter type to get the most out of your low end.

HiQnet for further adjustments

You can connect the XTi 2 Series amp to your laptop using the amplifier's USB plug, providing access to optional HiQnet Band Manager or Audio Architect software which you can download. These software programs allow you to tweak your amp's and system settings right from your laptop, and save the settings for future gigs. They can also give you real world feedback on how different components can fit into your system down the road.

Product Highlights:

    General Information:
    • 2-channel power amplifier with built-in digital signal processing
    • power output:
      • 650 watts RMS per channel at 8 ohms
      • 1200 watts RMS per channel at 4 ohms
      • 1600 watts RMS per channel at 2 ohms
      • 2400 watts RMS (mono) at 8 ohms in bridged mode
      • 3200 watts RMS (mono) at 4 ohms in bridged mode
    • frequency response: 20-20,000 Hz (-1 dB)
    • signal-to-noise ratio: 100 dB
    • total harmonic distortion: 0.5% (20-20,000 Hz)
    • independent right- and left-channel level controls
    • LCD screen with sel/prev/next buttons
    • digital signal processing:
      • defeatable Peakx Plus Limiters for each channel
      • input EQ: 6 parametric filters per channel
      • high-pass and low-pass crossover filters
      • output EQ: 8 parametric filters per channel
      • 50 ms of total delay
      • SubHarmonic Synth
    • proportional speed fan with front-to-rear airflow and three user-defined settings
    • initial power, DC voltage, short circuit, thermal, and current limiting protection
    • front-panel LEDs indicate power, signal, -10dB and -20dB below clipping, ready, clipping, and temperature
    • integrated cast aluminum handles
    • inputs: balanced XLR
    • outputs: binding posts and Neutrik Speakon
    • XLR Link/Out outputs to send signal to another amp
    • USB connection for HiQnet applications
    Other Information:

    Crown XTi 4002 Reviews

    Hands-on research

    What's in the box?

    Download owner's manual

    • Power amp
    • AC power cord
    • Operation Manual

    Features and Specs

    Number of Channels 2
    Power Class ---
    Watts per channel 8 ohms 650
    Watts per channel 4 ohms 1200
    Watts per channel 2 ohms 1600
    Watts bridged 2400
    Fan cooled Y
    DSP Y
    Filters LPF, HPF
    Rack spaces 2
    Height (inches) 3-1/2
    Depth (inches) 12-1/4
    Width (inches) 19
    Weight 18.5 lbs
    RCA ---
    1/4" ---
    XLR 2
    1/4" ---
    Binding post 2
    Spring post ---

    Product Research


    Amplifier Presets: The Crown XTi2 Series amplifier comes pre-loaded with presets that makes it easy to configure the amplifier for your type of applications.

    • Stereo DSP Off (Preset 1): This is the default mode the amplifier is set to from the factory. The amplifier is configured for stereo mode with all processing disabled.
    • Bridge (Preset 2): Putting the amplifier in Bridge (bridge-mono) mode delivers the power of both amp channels into a single 8 or 4 ohm load.
    • Xover (Preset 3): Putting the amplifier in Xover mode enables a 1.2kHz 4th order (24dB/octave) filter that sends frequencies of 1.2kHz and below to Channel 1 output and frequencies of 1.2kHz and above to Channel 2 output.
    • BRG SUBS (Preset 4): Putting the amplifier in BRG SUBS (bridged subs) mode allows you to bridge the amplifier for use with a single 8 or 4 ohm subwoofer. The inputs are automatically summed, a 90Hz 4th order (24dB/octave) LowPass filter is enabled, and the output mode is put into bridge-mono mode.
    • SUBSYNTH (Preset 5): Putting the amplifier in SUBSYNTH mode allows you to turn on the SubHarmonic Synth feature for use with a subwoofer on both channels. The inputs are automatically summed, a 90Hz 4th order (24dB/octave) filter is enabled on both Channel 1 and Channel 2, and the SubHarmonic Synth feature is turned on at +12dB level.

    Power Rating: Maximum average power in watts at 0.5% THD, 1 kHz.

    Impedance Load Dual Mode (stereo) Bridged Mode (mono)
    Wattage Wattage
    2 ohm 1,600 watts N/A
    4 ohm 1,200 watts 3,200 watts
    8 ohm 650 watts 2,400 watts

    Peakx Limiters: Peakx Limiters provide the ultimate in performance and protection for your entire system. This advanced algorithm was specifically developed and tuned to work with this amplifier and power-supply to achieve higher SPL will less audible artifacts. This means less distortion, less shutdowns, and maximum safe power delivered to your speakers. The Peakx Limiters can be easily turned on or off by channel right from the front panel eliminating the need to be digging around in the back of the dark rack.

    XLR Inputs/Outputs: The XTi2 Series amplifier provides two 3-pin XLR input connectors (one per channel). Two 3-pin XLR output connectors are provided (one per channel) to loop-thru signal from one amp to another.

    Outputs: The XTi2 Series amp feature two 4-Pole Speakon output connectors that will accept 2-pole or 4-pole Speakon connectors. The Channel 1 Speakon connector is wired for both channels so it can be used for bridged-mono wiring or for stereo wiring of two speakers to a single Speakon connector. There is also one pair of binding posts per channel that will accept banana plugs or bare wire.

    HiQnet USB Connector: The power amp's USB (type-B) port allows you to connect the amplifier to a computer for use with System Architect and Band Manager software (not included). The System Architect Software is required to have full control over all integrated processing features which can be downloaded from the following URL - When controlling more than one XTi2 at a time you will need USB Hub. We recommend using a powered USB Hub.

    Adjustable Fan Speeds: The XTi2 Series amplifiers employ flow-through, front-to-back ventilation and internal fans with forced-air cooling for rapid, uniform heat dissipation. You can tailor the fan speed to specific applications. The default mode is NORMAL and should work fine for most applications. EARLY mode turns the fan on sooner at a "lower" temperature, and FULL-SPEED mode turns the fan on full-speed full-time. Full-speed mode is not recommended for "dirty" environments.

    LED Indicators: The power amplifier features ten LEDs (five for each output channel) to indicate status of amplifier.

    • Ready Indicator: Two green LEDs, one for each channel, illuminate when the amplifier is ready to produce audio.
    • Single Presence: Two green LED's, one for each channel, illuminate when the channel input signal exceeds -40dBu.
    • -10: Green LED flashes when output signal level exceeds -10dB below clip.
    • -20: Green LED flashes when output signal level exceeds -20dB below clip.
    • Clip: Two red LED's, one for each channel, illuminate when the channel's output is being overdriven.
    • Thermal: Two red LED's, one for each channel, illuminate when thermal compression begins.

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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