The Q1 and Qi1 are line array loudspeakers for use in vertical columns. The Qi1 is the installation version of the Q1 loudspeaker, it differs only in cabinet construction and mounting hardware. The Q1 and Qi1 cabinets are passive 2-way designs that houses 2 x 10” LF drivers and a 1.3” HF compression driver with a toroidal waveshaping device to achieve a 75° horizontal dispersion characteristic. The two 10” neodymium LF drivers are positioned in a dipolar arrangement providing an exceptional dispersion control even at lower frequencies, with the 75° nominal dispersion angle being maintained down to 400 Hz. Q1 and Qi1 cabinets can be combined with the respective Q and Qi subwoofer systems: in mixed line array setups, as a separate subwoofer column or in ground stacked applications. For further extension of bandwidth and headroom ground stacked J-INFRA subwoofers can be used. The Q1 and Qi1 cabinets are constructed from marine plywood and have an impact resistant paint finish. The front of the loudspeaker cabinets are covered with a replaceable acoustically transparent foam and protected by a rigid metal grill. Four M10 threaded inserts on each side panel of the Qi1 cabinet enclosure are provided for attaching installation hardware whilst the Q1 cabinet incorporates a pair of handles and has integrated line array rigging hardware.

The Q10 and Qi10 are full range loudspeakers. The Qi10 is the installation version of the Q10 loudspeaker, it differs only in cabinet construction and mounting hardware. The Q10 and Qi10 are 110° x 40° passive 2-way loudspeakers housing 2 x 10” LF drivers and a 1.3” HF compression driver with a rotatable constant directivity horn and a passive crossover network. The two 10” neodymium LF drivers are positioned in a dipolar arrangement providing exceptional vertical dispersion control with the 40° nominal angle being maintained down to 400 Hz.

Q10 and Qi10 can be used as stand-alone full range systems, in combinations with other Q and Qi cabinets ground stacked or mounted on a high stand. The wide constant directivity performance provides remarkable transparency when used in close proximity to listeners. It is also ideally suited to ambient and distributed sound reinforcement tasks. When used in the upright configuration the Q10 and Qi10 have a very accurate 110° horizontal constant directivity behaviour that is maintained down to approximately 800 Hz.

The Q10 and Qi10 cabinets are constructed from marine plywood and have an impact resistant paint finish. The front of the loudspeaker cabinets are covered with a replaceable acoustically transparent foam and protected by a rigid metal grill. Four M10 threaded inserts on each side panel of the Qi10 cabinet enclosure are provided for attaching installation hardware whilst the Q10 cabinet incorporates a pair of handles and has integrated rigging hardware.

The B2 subwoofer with its high output bandpass horn design and extremely high SPL is ideal for extended bass requirements. It is configurable to be either an infrabass for the C4 system or a high output, alternative subwoofer for the F1222 or C7 systems. When used with a C4 system, d&b recommend a ratio of four C4-SUBs to one B2. The B2 cabinet is constructed from marine plywood, has an impact resistant paint finish and eight integral steel handles. The front of the subwoofer cabinet is fitted with catches at the sides for securing an optional transport lid, and mounted on the rear are four heavy duty wheels.

The M4 is a low profile 2-way high performance stage monitor employing an integrated 12”/1.3” and 15“/1.3“ exit coaxial driver respectively, with a CD horn and passive crossover network. The M4 distinguishes itself through a remarkable midrange presence and a dry and deep low end. With their 50° x 70° dispersion configuration it provides an accurately defined coverage area on stage and when used upright transform into powerful PA systems. They can optionally be operated in 2-Way Active mode by changing the D12‘s configuration without any modifications to the loudspeakers. The compact M4 monitors weigh a mere 16/20 kg (35/44 lb) and respectively produce dB SPLs of 132/134 when driven passively by the D6 and 135/138 by the D12. They can also be driven actively by the D12 producing 138/140 dB SPLs.

The Ci80 loudspeaker is a full range, two-way bass-reflex enclosure, utilizing an 8"/1" coaxial driver combination with a passive crossover. Coaxially mounting the 1" HF compression driver and 8" LF driver creates a very compact single driver whilst retaining the benefits of separate magnetic assemblies. The drivers are positioned together to utilize the combined shape and geometry of the LF cone and HF horn to create a single waveguide with a controlled, symmetrical, 85° conical dispersion.

The Ci80 cabinet is constructed from marine plywood and has an impact resistant paint finish. The front of the cabinet is protected by a rigid metal grill fitted with an acoustically transparent foam. The 30° angled rear side panels of the cabinet allow Ci80s to be positioned side by side forming miniature arrays. Four M8 threaded inserts are provided for attaching installation hardware.

The D12 is a dual channel amplifier developed and manufactured by d&b utilizing Digital Signal Processing (DSP) to incorporate loudspeaker specific configuration information and functions. This is designed for use with d&b loudspeakers, have both digital and analog signal inputs as well as link outputs, remote control and monitoring capabilities and switch mode power supplies. The level control incorporates a digital rotary encoder enabling selection of all operating modes in conjunction with a Liquid Crystal Display (LCD).



Loudspeaker specific configurations for current d&b loudspeakers and a linear mode are contained within them.

The digital elements of the D12 are specified and constructed to achieve the best possible audio performance while maintaining a very low latency of 0.3 msec. The Digital Signal Processing is used to provide the loudspeaker specific configurations, sophisticated protection circuits modelling thermal and mechanical driver behaviour, and switch functions. User definable equalization and delay functions are incorporated in each channel of the amplifiers and can be used for applications such as front fills or under balcony delays without the need for external processors. The signal delay capability allows delay settings of up to 340 msec. (= 100 m/328 ft) to be applied independently to each channel as can the 4-band parametric equalizer, providing optional Boost/Cut or Notch filtering. A signal generator offering pink noise or sine wave program is also incorporated for test and alignment purposes. Every unit can be given a unique Device Name to simplify identification and a password protected LOCK function is also incorporated to prevent unauthorized changes. The D6 and D12 amplifiers also detect incoming Pilot signals at its input (Input monitoring) and can use Load monitoring and System check functions to determine the status of the loudspeaker impedance. d&b System check is designed to verify that the system performs within a predefined condition and can be used to report the system condition after a show.

d&b Load monitoring, on the other hand, enables automatic and continuous impedance monitoring and along with Input monitoring is designed for incorporation within applications specified to the requirements stated in the International Standard IEC 60849 ‘Sound Systems for Emergency Purposes’. Both can determine the status of an LF or HF driver in systems with multiple elements, even if these are crossed over passively.

Apart from selectable output configurations for dual channel, Mix TOP/SUB and 2-Way Active mode, the D12 also provides d&b SenseDrive for use with the LF drivers in d&b active loudspeakers and subwoofers.