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DALI Announces Phantom IW Sub S-100 and CI Amp-2500 DSP

DALI’s Phantom IW Sub S-100 and CI Amp-2500 DSP offer a streamlined powered in-wall subwoofer solution for home theater enthusiasts.

DALI Phantom SUB S-100 In-Wall Subwoofer Front and Back

Danish speaker maker, DALI, has announced a new Phantom in-wall subwoofer/amplifier combination that will be available through Lenbrook Americas to North American music listeners and home theater enthusiasts.

In-wall subwoofers have become increasingly popular in the CI category; DALI joins a growing list of brands like KEF, Monoprice, and SVS who have introduced new models in the category over the past 12 months. In-wall subwoofers save space and can be integrated into both the wall and ceiling for home theater systems.

Dali Phantom SUB S-100 and AMP-2500 DSP
Dali Phantom SUB S-100 and AMP-2500 DSP

The new combination consists of the Phantom IW Sub S-100 in-wall subwoofer and CI AMP-2500 DSP amplifier.

IW SUB S-100

Dali Phantom Sub S-100 Front and Rear

The DALI PHANTOM IW SUB S-100 builds on the foundation of the K-60 LP’s bass driver design. It features a 10-inch driver with an extremely stiff, custom aluminum cone and unites long throw capability with an ultra-shallow profile.

The S-100 is also the first DALI speaker to include CSS (Constant Surface Surround) technology which has been co-developed by Purifi Audio, Denmark. The technology offers a unique surround geometry of alternating positive and negative regions, keeping surround modulation to a minimum. The surround surface sound is always constant, no matter the position of the diaphragm.

The SUB S-100 subwoofer has been developed with the PHANTOM CI AMP-2500 DSP amplifier to achieve the best performance within an MDF cabinet (more on the amp in the next section)

Sub S-100 Specifications

  • Low Frequency Driver: 1 x 10-inches (long stroke)
  • Frequency Range (+/- 3 dB): 26 – 250 Hz
  • Sensitivity (2.83V/1m): 84 dB
  • Maximum SPL: 110 dB
  • Outer Dimensions with Grille (HWD): 657 x 412 x 107 mm / 25.87 x 16.22 x 4.22 inches
  • Cut-out Dimensions (HxW): 615 x 370 mm/ 24.2 x 14.5 inches
  • Mounting Depth: 102 mm/ 4.02 inches
  • Weight with Grille: 17.25 kg / 38.03 lbs

Phantom CI AMP-2500 DSP 

Dali Phantom AMP-2500 DSP Front Angle View

As mentioned above, this amplifier was designed to match the needs of the S-100 subwoofer. 

Featuring Class-D amplification (2 x 500 watts), the PHANTOM CI AMP-2500 DSP provides a lot of power with extremely high efficiency and ultra-low distortion. 

Tip: The amplifier can also be bridged into a 1,000-watt mono amp.

With so much headroom, the CI AMP-2500 DSP is not only a great match for S-100 but other S and M-series in-wall speakers and subwoofers.

Tip: The AMP-2500 can power up to four SUB-S-100s.

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The AMP-2500 supports rack mount placement and features an adaptive fan control, which keeps fan noise to a minimum. The amp also features a fully featured DSP (Digital Signal Processing) and configurator web interface. Its built-in DSP is tailored with model specific pre-sets to optimize DALI CI models, for the best possible sound experience.

Dali Phantom AMP-2500 DSP Rear View

Setting Options

The 2500 provides several setting options to fine-tune performance.

  • Crossover and Gain: Allow crossover and level adjustment for each amplifier channel output. 
  • Speaker EQ: Provides Parametric equalization settings for each amplifier output. 
  • Driver Alignment: Enables users to apply different delay times (if needed) for each output. 
  • Polarity (Phase): 0 – 180 degrees.
  • Limiter: Adjustments to limit clipping or other issues. 
  • Output Mode: Easy switching between Lo-Z, Hi-Z, and Lo-Z BTL connection setup options. 

Tip: The AMP2500 also features Short Circuit, DC, Under-voltage, temperature, and Overload protection.

Dali Phantom AMP-2500 DSP Connections Close-up


  • Frequency Range (+/- 0.5 dB, 8 Ω load, 3 dB below rated power): 12Hz – 20 kHz
  • Inputs: 4 x Analog unbalanced, RCA 4x Analog balanced (Euroblock connectors), 1x S/PDIF.
  • Outputs: 2 x Lo-Z speaker outputs (4 – 16 ohm), 1 x Hi-Z speaker (70V / 100V), 1x S/PDIF digital outputs.
  • Output Power (8 Ω): 2 x 250 W (SE), 1 x 1000 W (BTL)
  • Signal To Noise-ratio (20 – 20k Hz, 8 Ω load): >108 dB (A-weighted)
  • THD+N (Typical- 20 – 20k HZ, 8 Ω load, 3dB Below Rated Power): < 0.05 %
  • Standby Power Consumption: < 0.5 Watts
  • Outer Dimensions (HWD):  88 x 440 x 332 mm / 3.5 x 17.3 x 13.1 inches
  • Weight: 5.9 kg/ 13.0 lbs

DALI Configurator App

To make the wired or wireless setup easier, the DALI CONFIGURATOR app can manage sound zones, inputs/outputs, firmware updates, import of speaker presets, and access to professional EQ settings. Configuration takes only a few minutes and can even be set up from a smartphone.

DALI Configurator App

From Krestian Pedersen, Dali Head of Product Management: “With the new in-wall sub and CI amplifier we are now able to offer a complete DALI CI HOME CINEMA solution which is an important step for us in order to deliver the ultimate experience”.

Price and Availability​ ​ ​

Available through Authorized Dali Dealers ​ ​ ​ ​​ ​ ​

Tip: For more details about DALI watch our podcast video with Brand Manager, Jason Zidle. 

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