Coda SCP High Output 2 X 18" Sensor Controlled Subwoofer

The SCP is a sensor controlled subwoofer incorporating double 18" woofers in a compact, vented enclosure.

The drivers contain an integrated velocity sensor that measures the diaphragm movement in real time, compares it with the input audio signal and adjusts the amplifier driving voltage and/or current, correcting any driver inaccuracy. It is a self-optimizing, closed feedback-loop in which the driver confirms precisely the power it needs to accurately reproduce the original audio signal.

The key advantage is a very extended and controlled response. Any distortion produced by the driver or the enclosure is instantly corrected by the feedback.


  • 2 x 18" extreme high excursion woofers
  • The integrated velocity sensor measures the voice coil movement
  • Extended frequency range to 25 Hz (-6 dB)
  • Omni or cardioid configurations
  • Ultra low distortion
  • Fast transient response. The upper and the ultra low frequency are time aligned
  • C10 amplifier and comparator provides integrated power and feedback loop control solution

The Coda Audio award winning sensor controlled technology is extended with the SCP-Series subwoofers. Combining a closed feedback-loop control with large, low noise laminar flow ports the SCP subwoofer offers increased output and well controlled response.

This technology surpasses that of conventional subwoofers offering measurable and clearly audible advantages in the impulse response, group delay, waterfall and the distortion domain. In fact the range 35 – 100 Hz is time aligned while the group delay increases slightly in the range 25 – 35 Hz.

The reduced group delay results in extremely accurate and musical bass reproduction. The sound quality is far beyond that of conventional port loaded systems.

Coda SCP High Output 2 X 18" Sensor Controlled Subwoofer


The SCP is perfectly suited as a subwoofer for AIRLINE LA8, G700-Series and CUE-Series, extending the system performance down to 25Hz. Typical applications are touring sound, theaters, houses of worship, dance clubs and live sound venues.


The SCP is equipped with two extremely long excursion 18" neodymium ultra low distortion woofers with integrated velocity sensor that measure, compare and control cone movements. The neodymium motor delivers extreme high magnetic flux for increased efficiency. The 4" voice coil is 50 mm high, ensuring ultra linear excursion of 40 mm / pp at consistent magnetic force. State of the art carbon-fiber cone ensure maximum stiffness and low moving mass. Three aluminum shorting rings reduce inter-modulation distortion; minimize induction variation while reducing thermal compression.

This design reduces dramatically the distortion of a typical subwoofer at longer excursion levels, and improves the overall sound quality and performance characteristics of the cabinet. The sensor is in fact an additional voice coil connected to the loudspeakers voice coil in a high precision, magnetically shielded system.

Electronics and Cabling

The Coda Audio C10 amplifier provides integrated power and feedback loop control solution for the SCP subwoofer. The unit has two amplifier channels as well as two comparators connected to a 5-pol Neutrik XLR input. The Comparator’s electronic circuit loop measures the voice coil excursion of the driver and corrects the signal, significantly decreasing distortion. The unit is set for flat frequency response down to 25 Hz (-6 dB).


Type: Sensor controlled subwoofer
Application: High output subwoofer
Frequency response: 25 Hz (-6 dB) - 120 Hz
Power handling (AES / peak): 3000 W / 12000 W
Sensitivity 1 W / 1 m:* 103 dB
Maximum output peak:** 144 dB
Components: 2 x 18" neodymium ultra low distortion woofers 4" (101.6 mm) voice coil, 1500 W (AES) each
Nominal impedance: 4 Ohm, +1 / -1
Input connectors: 2 x Neutrik TM NL4MP
Velocity sensors output: 1 x Neutrick TM NC3MAV
Suspension: optional
Enclosure material: Baltic birch
Finish: Textured black Paint
Dimensions: (W x D x H) 1190 x 790 x 547 mm
Net weight: 95 kg

* Half-space loading
**Measured with pink noise 6 dB crest factor


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