waterproof 28mm speaker
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This document provides the specifications for a 28mm HPFS waterproof speaker with spring contacts and foam pad. It includes details on the mechanical characteristics, materials used, electrical and acoustic specifications, environmental conditions, packaging, and recommended gasket. The speaker has an IPx7 water/gas tightness rating and is tested to withstand differential air pressures and prevent leakage. It has a rated impedance of 8 ohms, resonance frequency of 700Hz, and maximum short term power handling of 1W.
waterproof 28mm speaker
- 1. www.seltech-international.com 28 MM HPFS WATERPROOF SPEAKER WITH SPRING CONTACTS AND FOAM PAD Type No.: WD11903Y8H-WPDAP Revision Date Version Status Changes Approver 23/03/2016 V0.1 Released First release MB 07/02/2017 V0.2 Released Update marking, packaging and gasket LC
- 2. Specification: WD11903Y8H-WPDAP All Rights Reserved www.seltech-international.com Page 2 Mechanical Characteristics 1.1. Mechanical Drawing
- 3. Specification: WD11903Y8H-WPDAP All Rights Reserved www.seltech-international.com Page 3 1.2. Part Marking/Labeling The units have a serial number on bottom (pot) side Example 13022 7342 1121/UA : 13022 – last 5 digits of the core speaker 7 – last digit of year 34 – week 2 – day 11 – hour 21 – minute UA – Ukraine Differentiation compared to non-waterproof speakers made by a green dot. 1.3. Material List Material of POT ABS/SAN Material of MEMBRANE POLYCARBONATE (PC) DIMENSION 28MM/1.1 MASS 4.9g MATERIAL of MAGNET Nd Fe B CONNECTION SPRING-CONTACT DIRECTION of CONNECTOR PARALLEL TO PCB GASKET PC RING WITH ADHV VP 6899 PAD PORON 4701-30-25 PFC/Ф6 1.4. Water/gas tightness (IPx7) The products are 100% tested for leaks between cover and membrane. Method: Differential pressure measurement Down force on cover: 4 ±1 N Air pressure: 11Kpa Allowed leakage: < 133Pa at duration of 10s / < 65Pa at duration of 5s Air pressure direction: blow from membrane to magnet side
- 4. Specification: WD11903Y8H-WPDAP All Rights Reserved www.seltech-international.com Page 4 2. Electrical and Acoustic Specifications 2.1. Frequency response
- 5. Specification: WD11903Y8H-WPDAP All Rights Reserved www.seltech-international.com Page 5 2.2. Electro-Acoustic Parameters acc. IEC268-5 2.2.1. LOUDSPEAKER UNMOUNTED 1. RATED IMPEDANCE Z: 8Ω 2. VOICE COIL RESISTENCE R: 7.3Ω+10% / -4% 3. RESONANCE FREQUENCY f0: 700Hz±15% 2.2.2. LOUDSPEAKER MOUNTED IN BAFFLE 1. CHARACT. SENSITIVY 83.5±2dB AT 500mW IN DISTANCE d=1m IN THE FREQUENCY RANGE 500Hz – 2 kHz 2. THD ≤15%(500mW; 700Hz-3kHZ) 3. MAX. SHORT TERM POWER 1 W(IEC) 4. MAX. NOISE POWER(PHC) 0.5W(IEC) (CONTINUOUS) REQUENCY RANGE IN TELECOM APPLICATION: 300Hz - 3.4 kHz 2.3. Measurement Setup
- 6. Specification: WD11903Y8H-WPDAP All Rights Reserved www.seltech-international.com Page 6 3. Environmental conditions Generally the function is guaranteed in a temperature range of -40°C to +85°C. Transportation and storage in this same range does not cause remaining changes on the transducer. 4. Packaging 5. Gasket We recommend for a proper sealing to use our self-adhesive gasket. PN : GASKET28W Transducers per tray 48 Transducers per box 768 Box size (in cm) 61 x 41 x 25 Max. boxes per pallet 16 Transducer mass 4,9 g Net weight / box 4 kg Gross weight / box 7 kg