DBS 18-2 iSP



  • High-efficiency subwoofer featuring two 18” long-excursion low frequency transducers. It utilises a number of innovative technologies to provide premium electro-acoustic performance, including ultra-low power compression and distortion figures, to reliably deliver very high SPLs over extended periods
  • Very high power handling (9600 watts AES peak) and maximum sound pressure level (147 dB SPL peak at 1 metre)
  • Integral to the DBS 18-2 design is an example of Outline’s innovation in loudspeaker design, namely the ‘Decoupled Baffle Subwoofer’ assembly. This ingenious design contributes to the structural integrity of the entire cabinet as well as reducing resonance (and thus unwanted colouration) as well as air turbulence noise from the reflex ports
  • Specifically designed to be ground-stacked, the cabinet is equipped with sturdy feet to protect it and provide a solid base
  • Amplifier connection is made via a Speakon NL4 wired 2-way so that each transducer can be powered by a dedicated amplifier channel.
  • Optional trolley-board using a ‘stack & strap’ method of location – aids handling and transportation
  • Designed for use in applications requiring accurate and powerful reproduction of low frequencies at very high levels, its ability to reproduce program material with such integrity makes the DBS 18-2 applicable for either fixed or mobile use, which require energetic low frequency response without stress or equalisation.

The DBS 18-2 iMODE is a dual 18” subwoofer enclosure using phase inversion type loading, which, coupled with the use of several innovative loudspeaker technologies, allows it to deliver consistent performance at the highest levels over many years.

The high-efficiency amplifier is able to deliver a total of 3000 W EIAJ power to the transducers, thus enabling a very good power matching. The system embodies the iMode technology (see details below), thus allowing a comprehensive and reliable control and monitoring. The enclosure is tuned to a low frequency by way of a long port with a large surface area. This allows the DBS 18-2 iMODE to obtain a wide passband and a considerable extension towards the bottom end of the frequency response.

Its acoustic performance is the result of experience, in-depth analysis and careful design. The inner configuration improves the stiffness to-weight ratio of the overall structure while the baffle orientation and the woofer placement are designed to minimise internal resonance, dampen box-vibration modes and eliminate completely the usual ‘port turbulence’ associated with this loading method. The name of this Outline design is ‘Decoupled Baffle Subwoofer’.

The DBS 18-2 iMODE is capable of outstanding electrical to acoustic power conversion but still within a compact package. The performance is very high thanks to the careful choice of the reflex alignment and the construction of the cabinet. The DBS 18-2 iMODE has a useable frequency range at -10 dB of from 28 Hz to 160 Hz, while the response is just +/-3 dB from 34 Hz to 107 Hz. The transducers are able to handle a total continuous AES power of 2400 W, giving 135 dB SPL in half space, while peak values can reach 139.5 dB SPL. The DBS 18-2 iMODE’s high quality build finish is constructed from 18 mm (phenolic-glued) Baltic-birch plywood. The outer finish applied is a scratch-resistant, waterproof black paint and the front of the cabinet is protected by an anti-resonant steel grille.

The cabinet has 24 flying points, that makes vertical or horizontal hanging possible by using the appropriate accessories. The enclosure can accommodate an optional trolley-board, for handling and transporting on even or uneven surfaces. Recessed integrated handles in the side panels of the cabinet are used for a positive grip during handling.

The DBS 18-2 iMODE is equipped with Outline’s proprietary iMode Technology, a truly ‘intelligent’ digital loudspeaker control platform which combines advance digital signal processing and TCP/IP protocol to provide comprehensive control capabilities and a huge choice of interface devices. Users have real-time control over a series of parameter (levels, delay, eqs, shelving filters). iMode also allows the user to monitor performance parameters throughout the system (including VU-meters, clip and limiter status, amplifier overheating and protection) by using an iPad (with dedicated Outline software). With standard IP-based communication, the iMode platform is truly future-proof, offering control via netbook, smartphone, and many devices yet to appear. iMode operates on a Linux operating system with an Outline-customised kernel.

Wheeled trolley/front panel protection for DBS 18-2

Weather protection cover for DBS 18-2

FREQUENCY RESPONSE (-10 dB) 28 Hz – 160 Hz
AVERAGE DISPERSION Quasi-omnidirectional
POWER AMPLIFIER Type: class D (digital)
Input impedance: 10 kΩ balanced to ground
Cooling: temperature controlled variable speed fan
Rated Power: 2 x 1100 W EIAJ on 8 Ω
MAX SHORT-TERM SPL @ 1 m* 133.5 dB SPL (free-field)
139.5 dB SPL (half-space)
LOUDSPEAKERS AND LOADING 2 x 18″ hybrid band-pass loaded woofers
WEIGHT – SINGLE UNIT 95.5 kg (210.5 lb)
DIMENSIONS (Net) Height: 605 mm (23 26/32″)
Width: 1124 mm (44 8/32″)
Depth: 650 mm (25 19/32″)
* calculated using +10 dB crest-factor signal