Additional Resources: Product Page 3D Model date 11/06/2019 page 1 of 5 MODEL: CMS-402811-28SP DESCRIPTION: SPEAKER FEATURES 2 W miniature cloth cone solder terminals SPECIFICATIONS parameter conditions/description min typ max units input power max power: 1 minute on, 2 minutes off, 10 cycles 2.0 3.0 W impedance at 1.0 kHz, 1.0 Vrms 6.8 8 9.2 resonant frequency (Fo) at 1.0 Vrms, 50 cm 360 450 540 Hz frequency response 200 20,000 Hz sound pressure level at 1.0 W, 50 cm, avg at 1.0, 1.2, 1.5, 2.0 kHz 81 84 87 dB distortion at 1.0 kHz, 1.0 W 5 % buzz, rattle, etc. must be normal at sine wave, 0.2~2 kHz 4.0 V polarity cone moves forward w/ positive dc current to + terminal dimensions 40.0 x 28.3 x 11.5 mm magnet Nd-Fe-B frame material ABS cone material cloth terminal solder terminals weight 12.7 g operating temperature -20 60 C storage temperature -30 70 C hand soldering for maximum 3 seconds 380 C RoHS yes Notes: 1. All specifications measured at 15~35C, humidity at 25~75%, under 86~106 kPa pressure, unless otherwise noted. cuidevices.comAdditional Resources: Product Page 3D Model CUI Devices MODEL: CMS-402811-28SP DESCRIPTION: SPEAKER date 11/06/2019 page 2 of 5 MECHANICAL DRAWING units: mm tolerance: 0.5 mm &8 , cuidevices.com