Viewing Single Post From: What Is Sound?

Viewing Single Post From: What Is Sound?
advocatt	Jul 6 2008, 05:55 PM
Administrator Posts: 74 Group: Admin Member #1 Joined: June 24, 2008	* SOME BASIC SPEAKER RELATED JARGONS * 'Input sensitivity' is the SPL the driver will produce given one watt of power as measured from one meter away given some input frequency (usually 1kHz unless otherwise noted on the speaker). Typical sensitivities for car audio speakers are around 90dB/Wm. Some subwoofers and piezo horns claim over 100dB/Wm. However, some manufacturers do not use true 1W tests, especially on low impedance subwoofers. Rather, they use a constant voltage test which produces more impressive sensitivity ratings. 'Frequency response' in a speaker refers to the range of frequencies which the speaker can reproduce within a certain power range, usually +/-3dB. 'Impedance' is the impedance of the driver, typically 4 ohms, although some subwoofers are 2,6, 8 ohms, some stock Delco speakers are 10 ohms, and some stock Japanese imports are 6 ohms. 'Nominal power handling' is the continuous power handling of the driver. This figure tells you how much power you can put into the driver for very long periods of time without having to worry about breaking the suspension, overheating the voice coil, or other nasty things. 'Peak power handling' is the maximum power handling of the driver. This figure tells you how much power you can put into the driver for very brief periods of time without having to worry about destroying it.


What Is Sound? · ICE