Explanatory Note On Specifications - ELAC MicroSUB 2010.2 Bedienungsanleitung

Explanatory Note on Specifications

Among the final pages of this manual (respectively attachment) you will find the specifications of your
loudspeaker
Specifications include:
- Dimensions height x width x depth (in mm)
- Weight (in kg)
- Driver units: number and type of drivers
- Nominal (sine) power (in watts)
- Peak (pulse) power (in watts)
- Frequency range (in hertz)
- Sensitivity (in dB/W/m and in dB/2.83Vm)
- Nominal impedance (in ohms)
- Minimum impedance (in ohms at hertz)
- Recommended amplifier power (in watts/channel)
- Mains voltage
- Power consumption, StandBy
- Max. power consumption
- Max. amplifier power
- S/N (A-weighted)
- Input sensivity
- Input impedance
Dimensions refer to the outer dimensions of the loudspeakers.
Likewise the Weight gives information on the net weight of the loudspeaker. Because of tolerances
among the basic materials and rate of humidity, this value may vary by 10% typically.
Drive Units give information on the number and type of drivers of a loudspeaker.
The Nominal Power of a loudspeaker describes how much electric power may be supplied to the loud-
speaker during a long period of time without damaging the loudspeaker through overheating of the driv-
ers. To determine the nominal power, a statistical mixture of different frequencies with different vol-
umes is used as electric signal. This "composite signal" is selected so as to correspond on average to
the spectral distribution of different kinds of music. Thus the total power supplied to the speaker in the
determination of the nominal power is distributed to all the drive units at a particular ratio. If the electric
power corresponding to the nominal power were delivered to a single driver, it would normally be de-
stroyed.
The Peak Power defines the short-time power handling of a loudspeaker e.g. with respect to music
pulses. The destruction of a loudspeaker by exceeding the peak power is mostly caused by mechanical
damages of the drivers, e.g. increased deflection of the diaphragm.
The Frequency Range of a loudspeaker is defined by the upper and lower cutoff frequencies of the
SPL frequency response. At the cut-off frequencies the sound pressure level decreases by 8dB (factor
2.5) as compared to the midrange. Given a standard domestic room, the effective lower cutoff fre-
quency may deviate from standard values due to room resonances.
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