Ecler DACORD SB212 - Manual (Page 5)

5
4. CONNECTIONS
The DACORD SB212 unit only allows operation with low impedance of 4
Ω. To connect this unit, it
wears an easy accessible Speakon® connector. There is also the possibility of connecting a second
DACORD SB212 using the available STACK output jack (Speakon® connector). In this case, the
final impedance of the overall unit as seen from the amplifier will be 2
Ω.
The connection cables which connect the amplifiers output and the speaker should be of
good quality, have sufficient conductor area and be as short as possible. The latter fact is specially
important when the distance is long and the load impedance low. Always respect polarity.
To feed the DACORD SB212, a 700W to 1400W RMS power amplifier is recommended.
The DACORD SB212 includes a 12dB/Oct. slope passive low pass filter with a 120Hz
crossover frequency. You can use the switch on the lower part of the unit to deactivate the built-in
passive filter, allowing you to use external filters. ECLER has a number of options available for this
purpose.
5. PLACEMENT AND INSTALLATION
Please observe the following general rules:
As a subwoofer, the DACORD SB212 has been designed to be installed in discrete places.
Low frequencies are considered to be non-directional so the DACORD SB212 can be perfectly
placed in corners, under a table, behind curtains... that will not notably affect its output. Generally, it
should be known that placing it close to various surfaces will increase its efficiency. Consequently,
the sound pressure level will be higher if you place the speaker on the ground in a corner rather that
just beside a wall and even more that in the centre of a room.
There is no rule governing the number of mid/high speakers per subwoofer. It mainly
depends on the subwoofer location and on the room acoustics. Thus in a highly reflective room, a
subwoofer may even damage intelligibility while several subwoofers could be necessary in a room
with highly absorptive surfaces.
Always place the speakers on solid and firm surfaces.
Although the speakers can operate outdoor, they should not be subjected to climatic stress
like sunshine or rain.
Adapt the sound pressure levels to the diffusion needs.