Another specification of speakers is frequency response. One might
expect a nice smooth response, not what you see in 12.
There are several sound-related specifications to take away from
this chart.
First, the resonant frequency is the bump about 350 Hz. The
lower this number is the better the bass response.
Secondly, the Sound Pressure Level (SPL) rating is usually calculated
from the average of the output level at several frequencies around
1000 Hz. This speaker is rated at 82 dB. The larger this number, the
louder the speaker will be.
12: Frequency response (sound pressure level or SPL vs.
frequency) of a typical speaker used in model railroading
(28 x 35 mm – 8 ohms).
12
