4. APPLICATIONS
The CKL110/T has been designed mainly for playback of vocal signals in fixed installations. It can be
used alone or together with the CKL SM115/T (which has the same dimensions and shape) to extend
the system’s frequency response towards mid and low frequencies. Alone or together with the
CKL SM115/T the system offers high efficiency levels. This makes it suitable for all applications where
long throw of voice signals is the main priority.
This type of enclosure is ideal for: stadiums, gyms, theatres, congress halls, houses of worship and
every space which requires long sound throwing and highly intelligible speech.
The CKL SM115/T has been designed to extend the playback spectrum of the CKL110/T towards the
mid and low frequencies. It can not be used as stand-alone. Its dimensions and shape are the same as
CKL110/T. It is suitable for all applications that require not only an optimal response at speech
frequencies, but also playback of musical signals.
Also, it’s possible to complement the CKL/T system with the sub-bass reinforcement cabinets ECLER
DPC118 into biggest clubs or so, when the highest sound pressure levels are required.
For such application, please ask to an ECLER authorized dealer.
5. CONNECTIONS
The cable between the amplifier outputs and the loudspeakers must be of good quality, enough cross-
section and as short as possible. This is very important when the distance is long and the load is low
(4-8Ω). We recommend a section of 2.5mm2or more for distances up to 10m and a section of 4 or 6 mm2
for longer distances. An easy way to known the required cross-section, assuming a 4% loss is using
following equation:
Lenght in m
Cross-sectión en mm2=
Loudspeaker impedance in Ω
Placed at the rear wall of the CKL/T enclosures is a connection panel which holds two SPEAKON®
sockets wired in parallel, facilitating interconnection of speaker enclosures.
SPEAKON® connectors have been adopted worldwide as the standard professional loudspeaker
connection, due to its reliability, immunity to vibration and durability.
Remember that the nominal impedance of CKL/T speakers is 8Ω. Therefore, when connecting two
enclosures in parallel, the impedance will drop to 4 Ω, 2,66 Ω for tree enclosures and 2 Ω for four
enclosures. Please check the value of the minimum load impedance your amplifier can handle, as not all
amplifiers adequately operate at 2Ω.
Operation at 2Ωconsiderably reduces the sound quality and the system efficiency; e.g., the loss on the
loudspeaker cable reduces the Damping Factor by a 76% because of operating at 2Ωinstead of 8Ω.
Almost all the amplifiers in the market base their operation at 2Ωon the use of destructive protections to
keep the components safe, with the penalty of sound quality. Also, and for both technological and power
supply constraints, the power gain involved in operation at 2Ωinstead of 4Ωis usually very low. ECLERs
SPM and SPM CHANNEL N amplifiers are able to operate at 2Ωkeeping its philosophy of non-destructive
protections and delivering every Watt the power supply is capable of.
ECLER, following the maximum sound quality criterion, recommend using the 2Ωconnections only in
installations where the amplifier will operate far from its maximum power.
