Line Array Sub Bass Enclosure

2x 12 " Sub Bass Driver - 4000 Watts Program

The Acoustic Technologies TLA508B is a dedicated sub bass loudspeaker system designed to be flown with the TLA508 Line Array System.

The TLA508B is an extremely powerful direct radiating cabinet loaded with two proprietary 12" low frequency transducers developed specifically for the TLA Series of Line Array Systems. The transducers exhibit an exceptionally fast transient response, have a power handling capacity of 2,000 Watts Program Power each and exhibit a linear frequency response across the entire operating range.

The extensively braced cabinet is constructed from premium grade void free 5Birch Ply and is fitted with a rugged perforated steel grille to the protect the transducers. The cabinet is finished in black AcoustiCoate elastomer and fitted with dual Neutrik NL8MP connectors. The cabinet is also available in a selected range of custom finishes on request.

The Blackbird Flying Hardware System is an integral part of the design allowing vertical arrays of TLA508B sub-bass cabinets and TLA508 line array cabinets to be easily flown or ground stacked. Inter-cabinet angles are adjustable in 1º increments. The flying system is designed so that all parts are integral to the cabinet frame ensuring no parts are lost in transit.

The TLA508 Blackbird Line Array System is ideal for compact touring systems, outdoor music festivals and sporting events, corporate presentations and a wide range of in-house sound reinforcement applications including houses of worship, theatres and showrooms.


Download hi-res image: Front
Download hi-res image: Side
Download hi-res image: Front - no grille
Download TLA508B 3 View Line (CAD) Drawing
Download TFF508 3 View Line (CAD) Drawing



Transducer Complement 2 x 12” Sub Bass Neodymium Transducers
Frequency Response
40 Hz - 200 Hz ± 3 dB
99 dB @ 1 watt, 1 metre
Maximum Input Continuous
Maximum Input Program
Maximum Input Peak Program
2,000 Watts RMS
4,000 Watts Program
8,000 Watts Peak Program
Maximum SPL Continuous
Maximum SPL Program
Maximum SPL Peak Program
132 dB @ 1 metre
135 dB @ 1 metre
138 dB @ 1 metre
Nominal Impedance 4 Ohms
Physical Size 638mm(H) x 602mm(W) x 570mm(D)
Nett Weight 59 Kg
Connectors 2 x Neutrik NL8MP Speakon Connectors.
Cabinet Finish
AcoustiCoate Black Elastomer Finish.
A selected range of custom finishes are available on request.
Grille Finish Black Powder Coat Paint Finish.
Flying Hardware Type
Load Rating
Safety Factor
TLA508 Flying Hardware System
3x TLA508B + 16x TLA508
Greater than 10 (Confirmed by destructive testing)
Top Flying Frame Type
Load Rating
Safety Factor
TFF508 Flying Frame
Ground Stacked or Flown System
3x TLA508B + 16x TLA508
Greater than 10 (Confirmed by destructive testing)


The TLA508B Blackbird Line Array is constructed of high quality void free Birch Ply.
The transducers are protected by a rugged perforated steel grille. Acoustically transparent PVC foam is bonded to the mesh, providing a durable, visually appealing finish.

Sensitivity, Maximum Power and SPL measurements are conducted in accordance with the AES 24 Hour Pink Noise Standard. Acoustic Technologies reserve the right to alter or amend the TLA508B, without prior warning in the interests of product improvement.