ELAC MicroSUB 2010 BT, Руководство пользователя

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Explanatory Note on Specifications 35
On the back of this manual (respectively attachment) you will find the specifications of your loudspeaker
Specifications include:
- Dimensions Height x Width x Depth (in mm)
- Gross Volume (in litres)
- Weight (in kg)
- Driver Units: number and type of drivers
- Nominal Power (in watts)
- Peak 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
- Power consumption, StandBy
- Max. amplifier power
- S/N (A-weighted)
- Input sensivity
- Input impedance
Dimensions refer to the outer dimensions of the loudspeakers. Likewise the Gross Volume gives information on the
weight of the loudspeaker
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 loudspeaker dur-
ing a long period of time without damaging the loudspeaker through overheating of the drivers. To determine the
nominal power, a statistical mixture of different frequencies with different volumes 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 destroyed.
The Peak Power defines the short-time power handling of a loudspeaker e.g. with respect to music pulses. The de-
struction 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 cut-off 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 mid-
range. Given a standard domestic room, the effective lower cut-off frequency may deviate from standard values due
to room resonances.