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Black rackmount amplifier unit, 19 inches wide, 3.5 inches high, two-channel Crown CDi 4000

Crown

Crown NCDI4000 CDi 4000 live sound amplifier 2400 W RMS 2-channel

SKU CH-SMXN-PSK06 MPN NCDI4000

Two-channel 2400 W RMS amplifier with 70 V/140 V operation, USB and 20 Hz–20 kHz response

  • Two-channel operation drives independent speaker zones
  • 2400 W RMS total power fills large venues
  • 70 V and 140 V direct outputs simplify distributed lines
  • 20 Hz – 20 kHz bandwidth covers full audio range
  • 5″ high rack chassis fits standard 19″ enclosures

Two-channel 1200W amplifier

The Crown CDi 4000 is a two-channel power amplifier rated at 1200 W per channel into 4 ohms and 2400 W total RMS output. It supports 70 V and 140 V constant-voltage lines for distributed audio systems. The unit fits a standard 19-inch rack and occupies 3.5 inches of height. It is built for installed sound applications in venues and commercial spaces.

Suits fixed installs needing constant-voltage

This amplifier suits installers who need a lightweight rackmount unit with 70 V or 140 V direct drive for ceiling or paging speakers. It also fits systems requiring two independent channels at 4 ohms. Buyers who need more than two channels should look elsewhere. Those requiring lower total power or a different form factor will not match this model.

2400 W total RMS output

The single specification that decides fit is the 2400 W total RMS output across two channels at 4 ohms. This figure determines whether the amplifier can drive the intended speaker load and coverage area. Verify the required continuous power against this rating before purchase.

How it compares

Measured against everything we stock in Stage & PA Amplifiers, at today’s prices. Recalculated every night.

Price $2,663.99
Pricier than about 99% of the 236 comparable items (median $30.49).

Specifications

No published specifications for this item yet.

Questions about this item

Does the Crown CDi 4000 need an external preamp or mixer to drive its inputs?

Yes, the amplifier accepts line-level signals, so a mixer, processor or other preamp source is required to provide the input voltage for the two channels.

Can I run the Crown CDi 4000 alongside my existing 70 V distributed speaker line?

The unit supports direct 70 V and 140 V constant-voltage operation, so it can drive a 70 V line without a separate step-up transformer.

How can I confirm the Crown CDi 4000 is delivering clean power after installation?

Measure the output with a test tone; the spec lists 1 % total harmonic distortion at 1200 W per channel into 4 ohms across 20 Hz to 20 kHz.

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