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Safety precautions

Information regarding use of loudspeakers

WARNING!

Never stand in the immediate vicinity of loudspeakers driven at a high
level. Professional loudspeaker systems are capable of causing a sound
pressure level detrimental to human health. Seemingly non-critical
sound levels (from approx. 95 dB SPL) can cause hearing damage if
people are exposed to it over a long period.

In order to prevent accidents when deploying loudspeakers on the
ground or when flown, please take note of the following:

When setting up the loudspeakers or loudspeaker stands, make sure
they are standing on a firm surface. If you place several systems on top
of one another, use straps to secure them against movement.

Only use accessories which have been tested and approved by d&b for
assembly and mobile deployment. Pay attention to the correct
application and maximum load capacity of the accessories as detailed
in our specific “Mounting instructions” or in our "Flying system and
Rigging manuals".

Ensure that all additional hardware, fixings and fasteners used for
installation or mobile deployment are of an appropriate size and load
safety factor. Pay attention to the manufacturers' instructions and to the
relevant safety guidelines.

Regularly check the loudspeaker housings and accessories for visible
signs of wear and tear, and replace them when necessary.

Regularly check all load bearing bolts in the mounting devices.

CAUTION!

Loudspeakers produce a static magnetic field even if they are not
connected or are not in use. Therefore make sure when erecting and
transporting loudspeakers that they are nowhere near equipment and
objects which may be impaired or damaged by an external magnetic
field. Generally speaking, a distance of 0.5 m (1.5 ft) from magnetic
data carriers (floppy disks, audio and video tapes, bank cards, etc.) is
sufficient; a distance of more than 1 m (3 ft) may be necessary with
computer and video monitors.

J12 Manual

(1.2 EN)  

Safety precautions - 1

Содержание J12

Страница 1: ...J12 Manual 1 2 EN ...

Страница 2: ...anual Version 1 2 EN 03 2008 D2981 EN 01 Copyright by d b audiotechnik GmbH 2008 all rights reserved Keep this manual with the product or in a safe place so that it is available for future reference When reselling this product hand over this manual to the new customer If you supply d b products please draw the attention of your customers to this manual Enclose the relevant manuals with the systems...

Страница 3: ...he accessories as detailed in our specific Mounting instructions or in our Flying system and Rigging manuals Ensure that all additional hardware fixings and fasteners used for installation or mobile deployment are of an appropriate size and load safety factor Pay attention to the manufacturers instructions and to the relevant safety guidelines Regularly check the loudspeaker housings and accessori...

Страница 4: ...n This setup allows a very smooth crossover design with a well defined overlap of adjacent frequency bands resulting in a very consistent and accurate horizontal dispersion Due to the dipolar arrangement of the low drivers the nominal dispersion of 120 is maintained down to 200 Hz The J12 frequency response extends from 48 Hz to above 17 kHz The J12 cabinet is constructed from marine plywood and h...

Страница 5: ... Input Output routing 2 Way Active mode The input signal is fed to INPUT A while the input signal is routed linked to INPUT B internally To enable SenseDrive at least one of the cabinets has to be connected to output A of the D12 amplifier J12 Arc and J12Line setups The D12 amplifier provides two setups for J12 cabinets The selection depends on the curvature of the array Within a typical J12 array...

Страница 6: ...all amplifiers driving the array can be fed with the same signal CPL circuit Fig 5 Frequency response correction of CPL circuit The CPL Coupling circuit compensates for coupling effects between the cabinets by reducing the low and mid frequency level The CPL function should be used when J8 J12 cabinets are used in arrays of five or more As coupling effects increase with the length of the line arra...

Страница 7: ...eak 10 ms 500 2000 W Power handling capacity MHF RMS peak 10 ms 200 800 W Nominal dispersion angle horizontal 120 Splay angle settings 0 7 1 increment Components 2 x 12 driver 1 x 10 driver 2 x1 4 exit compression driver Passive crossover network Connections 2 x EP5 optional 2 x NL8 Pin assignments EP5 1 LF 2 LF 3 MHF 4 MHF 5 SenseDrive NL8 1 LF 1 LF 4 MHF 4 MHF 3 SenseDrive Weight 60 kg 132 lb Fi...

Страница 8: ...ll applicable amendments A detailed declaration is available on request and can be ordered from d b or downloaded from the d b website at www dbaudio com WEEE Declaration Disposal Electrical and electronic equipment must be disposed of separately from normal waste at the end of its operational lifetime Please dispose of this product according to the respective national regulations or contractual a...

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