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DSP Systems

Steerable Bass-Array DSP Controller

Bass Array
The Bass-Array Controller or Lambda Array is one of the latest technical creations of ATEIS INTERNATIONAL that fits perfectly in the 'Intelligent audio solution' range of products and has proven to be a real add-on to the third generation Messenger® line arrays.

The combination of Messenger line arrays and a Bass-Array offers the perfect solution for speech and musical performance in any difficult acoustic environment. By applying the same patent Messenger® technology to the Bass-Array, makes it the first array of its kind that carries bass frequencies over long distances and keep the signal deviation within 2 dB over 100 m.

The technology: The Bass-Array is based on the Messenger® patent algorithm that was introduced in 1999 by Johan van der Werff and is now owned by ATEIS INTERNATIONAL. Using a controlled power and frequency shading model, full directivity control and side-lobe suppression can be obtained. Upper and lower frequencies of this controlled directivity concept are defined by means of extending the total length for the lower frequencies by having multiple sources of which their acoustic centers are within 1/2 distance of the upper frequencies spaced. With a total length of 14 meter and only 8 cabinets, lobe steering and directivity control can be achieve down to 35 Hz up to 400 Hz.

With the use of the powerful Messenger® LOBE-ASSEMBLER software you can built and shape the Bass-Array-Lobe to fit perfectly in the acoustic difficult environment. Use a dual or triple lobe and the Bass-Array-Lobe can cover both ground level and balcony with the highest directivity possible and with the lowest signal deviation. Variable opening angles for variable throws and symmetrical and/or asymmetrical lobes can be constructed. By changing the 1/2 distance, the Bass-Array can be adapted to fit with required cross-over frequencies with any mid-high tone array available in the market.

The bass cabinets used in the Bass-Array can be of any brand and any size. The lobe assembler software can be easily adapted to any size and brand. For this we can adapt the Lobe Assembler software to meet the 3rd part brand specifications. The processor for the Bass-Array is delivered as 19-inch rack mount frame that provides analogue as well as AES interfacing with the self-powered third party Bass cabinets.
Bass Array
  • Controlled directivity.
  • Low and Sub-Low steering.
  • Variable opening angles.
  • Controlled freq. 25 - 400 Hz.
  • Signal decay, +/- 1dB @ 100 m.
  • Long throw.
  • High SPL, 97 dB @ 100 m.
  • High clarity.
  • Effective size: 7 to 14 m.
Bass Array
Power rating 8 x 500 Watt Self powered
Max SPL@125 Hz 95 dB@ 5-100 m +/- 2 dB
3rd party engine 15" long excursion cone driver, ferrofluid cooled Cabinet resonance <45 Hz

Length 700 cm
Frequency respond 50-340 Hz, Delta - spacing ? 100 cm
Width 43.6 cm
Steering +/- 15 degrees
Vertical opening 10 degrees -25 degrees

Length 1400 cm
Frequency respond 35-200 Hz, Delta - spacing: ? 200 cm
Width 43.6 cm
Steering +/- 10 degrees
Vertical opening 5 degrees -25 degrees