OWS-2879W50A-4

Date Page 13-Sep-2022 1/8 DK P/N: OWS-2879W50A-4 OLE WOLFF www.owolff.com Revision: 00 SPECIFICATION SPECIFICATION FOR APPROVAL Speaker Part Number OWS-2879W50A-4 Note This item is in compliance with the following requirements: 1. RoHS directive 2. REACH Customer P/N Prepared Signature / Date Ole Wolff Checked Approved TANQIANFENG 2022.09.13 Confirmation Signature / Date Customer REVISION NOTES: Date Rev. 2022.09.13 00 OLE WOLFF ELEKTRONIK A/S Roedengvej 25 4180 Soroe Denmark TEL: +45 57833830 FAX: +45 57820019 Description of Revision Initial Release OLE WOLFF ELECTRONICS INC. 1525 McCarthy Blvd, Suite 1093 Milpitas, Ca 95035 USA TEL : +1 408 888 8413 OLEWOLFF ELEKTRONIK GmbH Schulstrasse 15A. DE-25451 Quickborn. Germany OLEWOLFF ELECTRONICS 3 Bedford Street, Woburn, Bedfordshire MK17 9QB, ENGLAND TEL: +49 (0) 4106 765900 FAX: +49 (0) 4106 627297 TEL: +44 (0) 1525 290755 FAX: +44 (0) 1525 290855 OLE WOLFF ELEKTRONIK Yliopistonkatu 26 (P.O.BOX 257) FI-40101 Jyväskylä Finland TEL: +358 14 338 3050 FAX: +358 14 338 3059 OLE WOLFF (ASIA) LTD. Unit B, 19/F., Bold Win Ind. Bldg., No. 16-18 Wah Sing St., Kwai Chung, N.T., H.K. OLE WOLFF LTD. Unit 7A08, Block 2, Elite Building, Nanshan Avenue, Nanshan District, Shenzhen, PRC. TEL: +852 2424 3274 FAX: +852 2424 2219 TEL: +86 755 82612542 TEL: +86 755 26406156 Date Page 13-Sep-2022 2/8 DK P/N: OWS-2879W50A-4 OLE WOLFF www.owolff.com Revision: 00 SPECIFICATION 1. SCOPE THIS SPECIFICATION IS APPLIED FOR A DYNAMIC SPEAKER. 2. TEST CONDITIONS TEMPERATURE : 15°C  35°C HUMIDITY : 45%85% (R.H.) ATMOSPHERE : 860  1060 hPa 3. GENERAL REQUIREMENTS OPERATING TEMPERATURE RANGE: -30° C  70° C STORAGE TEMPERATUR RANGE: -40° C  85° C 4. MECANICAL LAYOUT & DIMENSIONS DIMENSIONS : SHOWN IN FIGURE.4 NET WEIGHT: approx 10 g 5. ELECTRICAL AND ACOUSTICAL CHARACTERISTICS 1 Resonance Frequency 570± 20% Hz/1V 2 Impedance 4 ± 20%Ω 1KHz/1V 3 Sensitivity 103±3 dB(2W/0.1M) 4 Input Power (Nom./Max.): 2.0 W / 3.0 W 5 Effective Frequency Range F0~20KHz 6 Total Harmonic Distortion (THD) < 10% at 1K~20K Hz,2.0 W Sine wave 7 Buzz & Rattle 2.83V 8 Magnet OLE WOLFF ELEKTRONIK A/S Roedengvej 25 4180 Soroe Denmark TEL: +45 57833830 FAX: +45 57820019 AT FO~6KHz AVG F0~20KHz NdFeB φ12.6 x3.3t mm OLE WOLFF ELECTRONICS INC. 1525 McCarthy Blvd, Suite 1093 Milpitas, Ca 95035 USA TEL : +1 408 888 8413 OLEWOLFF ELEKTRONIK GmbH Schulstrasse 15A. DE-25451 Quickborn. Germany OLEWOLFF ELECTRONICS 3 Bedford Street, Woburn, Bedfordshire MK17 9QB, ENGLAND TEL: +49 (0) 4106 765900 FAX: +49 (0) 4106 627297 TEL: +44 (0) 1525 290755 FAX: +44 (0) 1525 290855 OLE WOLFF ELEKTRONIK Yliopistonkatu 26 (P.O.BOX 257) FI-40101 Jyväskylä Finland TEL: +358 14 338 3050 FAX: +358 14 338 3059 OLE WOLFF (ASIA) LTD. Unit B, 19/F., Bold Win Ind. Bldg., No. 16-18 Wah Sing St., Kwai Chung, N.T., H.K. OLE WOLFF LTD. Unit 7A08, Block 2, Elite Building, Nanshan Avenue, Nanshan District, Shenzhen, PRC. TEL: +852 2424 3274 FAX: +852 2424 2219 TEL: +86 755 82612542 TEL: +86 755 26406156 Date Page 13-Sep-2022 3/8 DK P/N: OWS-2879W50A-4 SPECIFICATION OLE WOLFF www.owolff.com Revision: 00 6. RELIABILITY TEST REQUIREMENTS After any following tests the S.P.L should not deviate more than ±3dB from initial value. No. ITEMS TEST CONDITION Keep 96 hours at +85℃±3℃ and leave 3 hours in normal temperature and then check 1. High Temp. Test Keep 96 hours at -40℃±3℃ and leave 3 hours in normal temperature and then check 2. Low Temp. Test 3. Humidity Test Keep 96 hours at +40℃±3℃ relative humidity 95% and leave 3 hours in normal temperature and then check 4. Thermal cycle Test Low temperature:-40±3℃,High temperature:+85±3℃,cycle:1hour/cycle, total 5 cycles. Vibration Test 10~55~10Hz sin-wave sweep 15min.5G(constant);X,Y,Z 3 direction,2hours each, total 6 hours. 5. Free drop a unit from 100cm height to 20mm thick board.6 directions, total 6 times. 6. Drop Test Rated Power white noise is applied for 96 hours 7. Load Test Max Power 1min on, 2min off, 10cycles. 8. Max Power Test 9. Terminal strength Test OLE WOLFF ELEKTRONIK A/S Roedengvej 25 4180 Soroe Denmark TEL: +45 57833830 FAX: +45 57820019 OLE WOLFF ELECTRONICS INC. 1525 McCarthy Blvd, Suite 1093 Milpitas, Ca 95035 USA TEL : +1 408 888 8413 Capable of withstand 1kg load for 15seconds without resulting in any damage or rejection OLEWOLFF ELEKTRONIK GmbH Schulstrasse 15A. DE-25451 Quickborn. Germany OLEWOLFF ELECTRONICS 3 Bedford Street, Woburn, Bedfordshire MK17 9QB, ENGLAND TEL: +49 (0) 4106 765900 FAX: +49 (0) 4106 627297 TEL: +44 (0) 1525 290755 FAX: +44 (0) 1525 290855 OLE WOLFF ELEKTRONIK Yliopistonkatu 26 (P.O.BOX 257) FI-40101 Jyväskylä Finland TEL: +358 14 338 3050 FAX: +358 14 338 3059 OLE WOLFF (ASIA) LTD. Unit B, 19/F., Bold Win Ind. Bldg., No. 16-18 Wah Sing St., Kwai Chung, N.T., H.K. OLE WOLFF LTD. Unit 7A08, Block 2, Elite Building, Nanshan Avenue, Nanshan District, Shenzhen, PRC. TEL: +852 2424 3274 FAX: +852 2424 2219 TEL: +86 755 82612542 TEL: +86 755 26406156 Date Page 13-Sep-2022 4/8 DK P/N: OWS-2879W50A-4 OLE WOLFF www.owolff.com Revision: 00 SPECIFICATION 7. ELECTRICAL CHARACTERISTICS MEASURMENT (FIGURE.1) MEASUREMENT CIRCUIT FOR DYNAMIC SPEAKER MEASURING EQUIPMENT NO 1.0 2.0 3.0 4.0 OLE WOLFF ELEKTRONIK A/S Roedengvej 25 4180 Soroe Denmark TEL: +45 57833830 FAX: +45 57820019 EQUIPMENT UNIT UNDER TEST TEST BOX AUDIO POWER AMPLIFIER ANALYZER OLE WOLFF ELECTRONICS INC. 1525 McCarthy Blvd, Suite 1093 Milpitas, Ca 95035 USA TEL : +1 408 888 8413 OLEWOLFF ELEKTRONIK GmbH Schulstrasse 15A. DE-25451 Quickborn. Germany OLEWOLFF ELECTRONICS 3 Bedford Street, Woburn, Bedfordshire MK17 9QB, ENGLAND TEL: +49 (0) 4106 765900 FAX: +49 (0) 4106 627297 TEL: +44 (0) 1525 290755 FAX: +44 (0) 1525 290855 REMARKS SPEAKER OLE WOLFF STANDARD BOX CRATE AUDIO SPA300 LISTEN SOUNDCHECK OLE WOLFF ELEKTRONIK Yliopistonkatu 26 (P.O.BOX 257) FI-40101 Jyväskylä Finland TEL: +358 14 338 3050 FAX: +358 14 338 3059 OLE WOLFF (ASIA) LTD. Unit B, 19/F., Bold Win Ind. Bldg., No. 16-18 Wah Sing St., Kwai Chung, N.T., H.K. OLE WOLFF LTD. Unit 7A08, Block 2, Elite Building, Nanshan Avenue, Nanshan District, Shenzhen, PRC. TEL: +852 2424 3274 FAX: +852 2424 2219 TEL: +86 755 82612542 TEL: +86 755 26406156 Date Page 13-Sep-2022 5/8 DK P/N: OWS-2879W50A-4 SPECIFICATION OLE WOLFF www.owolff.com Revision: 00 8. STANDARD FREQUENCY RESPONSE CURVE (Fig.2) Hz dB 600~1000 ±5 1060~3000 ±4 3150~6000 ±5 9. STANDARD THD CURVE (Fig.3) Hz THD OLE WOLFF ELEKTRONIK A/S Roedengvej 25 4180 Soroe Denmark TEL: +45 57833830 FAX: +45 57820019 OLE WOLFF ELECTRONICS INC. 1525 McCarthy Blvd, Suite 1093 Milpitas, Ca 95035 USA TEL : +1 408 888 8413 1000~20000