this specification covers our product of dynamic speaker speaker electroacoustic characteristics sound pressure level 853db (0.1w/0.1m) @ave 0.5khz,1.0khz,1.5khz, 2.0khz frequency response curve as shown in fig.3 resonance frequency (f0) 30020% hz rated noise power 3.0w short-term max. power 5.0w frequency range f0~20khz. test setup measuring conditions and procedures shown in fig 1 ac impedance 4? 15% magnet rare earth permanent (ferrite) magnet 32x18x6mm distortion less than 5% @1khz input rated power 1w buzz, rattle, etc. not audible from f0 to 20khz with 3.46v sine wave input polarity when positive voltage is applied to the terminal marked (+), diaphragm should be moved to the front. dimensions 71.0 x40.0x23.0mm weight 29g 8% general requirements operating temperature range -20 oc ~ +65 oc storage temperature range -30 oc ~ +80 oc standard test conditions temperature 5oc ~ 35 oc relative humidity 45% ~ 85%(rh) air pressure 860 mbar ~ 1060 mbar page 1/6 model: SP-7140-1 product: dynamic speaker edition: c/2017
reliability tests after these tests , the change of s.p.l will be within 3db high temperature test high temperature +70 oc 3 oc duration 96 hours (leave 6 hours in normal temperature and then check) low temperature test low temperature -30 oc 3 oc duration 96 hours (leave 6 hours in normal temperature and then check) humidity test temperature +30 oc 3 oc relative humidity 92%~95% duration 96 hours (leave 3 hours in normal temperature and then check) vibration 10hz ~55hz ~10hz sine-wave sweep 15 minutes 5g(constant) x, y, z 3 directions, 2 hours each, total 6 hours temp./humidity cycle the part will be subjected to 5 cycles. one cycle shall be 6 hours and consist of: drop test drop speakers contained in normal box on to the board 40mm thick 10 times from the height of 75cm load test rated power pink noise is applied for 24 hours at room temp. lead wire pull strength the pull force will be applied to double lead wire: horizontal 3.0n (0.306kg) for 30 seconds vertical 2.0n (0.204kg) for 30 seconds page 2/6 model: SP-7140-1 product: dynamic speaker edition: c/2017
measuring method (speaker mode) (fig. 1) block diagram for measurement method (fig. 2) page 3/6 150mm 225mm 1650mm 1350mm st andar d baf f l e standard test condition of speaker microphone speaker power amplifier audio analyzer jhds type 6160s standard baffle board recommended in iec 268-5 where 1650mmx1350mm model: SP-7140-1 product: dynamic speaker edition: c/2017
frequency response curve (fig. 3) the swept sine-wave frequency response of a loudspeaker should ideally not deviate more than indicated. page 4/6 model: SP-7140-1 product: dynamic speaker edition: c/2017
page 5/6 dimensions tolerance: 0.5 unit: mm no item material quantity 1 frame 1 metal 2 pcb terminal 1 paper+metal 3 magnet 1 ferrite 4 plate 1 spcc 5 voice coil 1 paper+cu 6 diaphragm 1 cloth + paper 7 cap 1 paper 8 gasket 1 paper 190.5 640.5 710.5 340.5 400.5 231 70.5 30.5 4- 4 15210 model: SP-7140-1 product: dynamic speaker edition: c/2017
packing page 6/6 model: SP-7140-1 product: dynamic speaker edition: c/2017
|
