Beijing Silk Road Enterprise Management Services Co.,LTD
Beijing Silk Road Enterprise Management Services Co.,LTD
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40mm Powerful Precision Sound Speakers Sound Box HIFI Music Woofer with waterproof CE and RoHS
1. Specifications
| Sound pressure | 84±2(A)AT 1m/1w |
| VOICE COLL IMP | 8Ω |
| RESONANT FREQ | 400±20% HZ |
| Temperature | -25°C ~ 55°C |
| RATED POWER | 4W |
| MAX POWER | 6W |
| Weight | 48g |
2. Description
|
NO. |
ITEM |
SPECIFICATION |
TESTING CONDITION |
| 1 |
NOMINAL SIZE | 40.1X40.1 MM | |
| 2 |
VOICE COLL IMP | 8Ω ±15% | AT 1.0KHz 1V |
| 3 |
RESONANT FREQ | Fo 400±20% HZ | AT 1.0V |
| 4 |
OUTPUT S.P.L | MEAN VALUE AT0.5, 0.6,0.8,1.0 KHz 84±2dB | AT 0.5m /1w MEASUREMENT |
| 5 |
FREQ RESPONSE | fo ～ 10 K Hz -10dB | -10dB |
| 6 |
RATED POWER | 4.0 W | |
| 7 |
MAX POWER | 6.0 W | |
| 8 |
OPEARTION |
MUST BE NORMAL | PROGRAM SOURCE 4.0 W |
| 9 |
NOISE |
MUST BE NORMAL | SINE WAVE 5.66 V |
| 10 |
HEAT TEST | AFTER TEST MEET ITEM 8,9 | 55± 2℃ 16 HOURS |
| 11 |
HUMIDITY TEST | AFTER TEST MEET ITEM 8,9 | 40±2℃ 90～95%RH 48 HOURS |
| 12 |
LOAD TEST | AFTER TEST MEET ITEM 8,9 | 4.0 W 96 HOURS |
| 13 |
MAGNET | Ф24X3.5 (N38SH) NdFeB MATERIAL SIZE | |
| 14 |
TOTAL FLUX | MAX WELL | |
| 15 |
POLARIZATION | When a positive DC current is applied to the terminal marked(+),diaphragm shall move forward | |
| 16 |
NET WEIGHT | 48g |
3. Applications
Speakers are typically housed in a speaker enclosure or speaker cabinet which is often a rectangular square box made of several forms of wood, or sometimes plastic. The enclosure's materials and design play an important role in the quality of the sound. The enclosure generally must be as stiff and non-resonant as practically possible. Where high fidelity reproduction of sound is required, multiple loudspeaker transducers are often mounted in the same enclosure, each reproducing a part of the audible frequency range (picture at right). In this case the individual speakers are referred to as "drivers" and the entire unit is called a loudspeaker. Drivers made for reproducing high audio frequencies are called tweeters, those for middle frequencies are called mid-range drivers, and those for low frequencies are called woofers. Extremely low frequencies (16Hz-~100Hz) may be reproduced by detached subwoofers. Smaller loudspeakers are found in devices such as radios, televisions, portable audio players, computers, and electronic musical instruments. Larger loudspeaker systems are used for music, sound reinforcement in theatres and concert halls, and in public address systems.
4. Competitive Advantage
5. Information
| Place of Origin: | China |
| Brand Name: | Yuesonic |
| Certification: | CE/RoHS/SGS |
| Model Number: | YD78-1N |
6. Custom properties
| Product Name: | Speaker | Application: | Outdoor |
| Weight: | 257g | Sound: | HIFI |
| Material: | Metal | Power: | 15W |
| Standard: | CE/ROHS/SGS | Type: | Line array |
7. Product commercial terms
| Minimum Order Quantity: | 2000pcs |
| Price: | negotiation |
| Packaging Details: | T/T or western Union |
| Delivery Time: | 3,0000pcs per month |
| Payment Terms: | 14~28 working days after received your payment |
| Supply Ability: | Packed in box firstly,and then reinforced with neutral packaging for outer packing |