| Prod Model: |
RJ21G125 |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Nominal Impedance: |
8ohm |
| Noise: |
<95dB |
| Hi-Fi: |
Not Hi-Fi |
| Application: |
Commercial |
| Certification: |
CCC |
| Speaker Material: |
Cu |
Product Description
Product Information:
| APPLICATION | Subwoofer |
| Nominal impedance | Ohm | 8 |
| Continuous pink noise | W | 900 |
| The maximum peak power | W | 1800 |
| Sensitivity(1W/1m) | dB | 97 |
| Frequency response | Hz | 30-2KHZ |
| Voive coil diameter | mm | 125(4.5in) |
| Voive coil material |
| Cu |
| Voice coil winding depth | mm | 26 |
| Magnet gap depth | mm | 25 |
| THIELE-SMALLPARAMETERS |
|
|
|
| Resonance frequency | Fs | Hz | 30 |
| DC resistance | Re | Ohm | 5.3 |
| Mechanical Q factor | Qms |
| 5.6 |
| Electrical Q factor | Qes |
| 0.31 |
| Total Quality factor | Qts |
| 0.30 |
| Equivalent volume | VAS | L | 345 |
| Moving mass | Mms | kg | 323.13 |
| Mechanical complience | Cms | mm/N | 0.0857 |
| BL factor | BL | Tesa m | 32 |
| Effective piston area | Sd | m² | 0.1698 |
| Max.linear escursion | Xmax | mm | ±6 |
| MOUNTING INFORMATION |
|
|
| Overall diameter | mm | 545 |
| Mounting holes diameter | mm | 525 |
| Bolt circle diameter | mm | 8x10 |
| Baffle cut-out diameter | mm | 500 |
| Overall depth | mm | 245 |
| Net weight | kg | 21.5 |
Company profile
Sandy Audio Equipment Company Limited is the member of CAIA, the director of CETA. Sandy Audio was founded in 1995 to manufacture and supply professional speaker, microphone, amplifier power, mixer and peripheral equipment. After near 10years of development, it had 15000 square meters industrial park, 15000 square meters standard working plant and 800 square meters product experience center, formed a large-scale production capacity.
We focused on the high-end audio equipment system, set up a strong high-tech research and development teams, and continue to introduce internationally advanced equipment and technology. The enterprise has a good sales network and after-sales service system, and has offices in the country for domestic and foreign customers with pre-sales, sale and the full range of services.
The enterprise won a lot of glorious title, such as "Top 10 famous audio equipment brand in China", "National Quality Supervision of qualified products". We have been passed CCC, CE, CB, EK, ISO9001-2008 and other quality certifications.
The enterprise always adheres to: "quality first, service first" development philosophy, it had established successfully enterprise images and achieved brand values in domestic and overseas, and have a good cooperation relation with customers around the world.
Our Services
1. Provide professional person to communicate with you before the order.
2. Provide strict quality check for each part, each process before export.
3. Provide optimum system solution based on each client's specific requirement.
4. Provide complete post-sale service, including installation, technical guide and training.
We can offer OEM and ODM service.We also offer the sample. Welcome the new old customer to kind of customized.
Why choose us?
1. Our factory have a Strong R & D Capability, develop new unit per month.
2. Most of our products passed CE,CCC,CCF and so on approval.
3. With very strict quality control system, full test before shipment.
4. Failure: less than 2.0%
5. 12 months warranty with good after-service.
6. On time delivery!
7. More discount for larger order.
8. We will provide excellent service,high-end quality and more competitive price, welcome to ask for information
Our company was founded in 1995, integrating research, development, production, marketing, and engineering services. We mainly produce and sell professional loudspeakers, amplifiers, mixers and peripheral devices. After 10 years of development, we have covered an area of 15, 000 square meters in a industrial park, with manufacturing plants nearly 7, 000 square meters.
Accompanied with strong technical force and high quality staff, we have taken the shape with strength of large scale production. Focusing on research and development, we enhance product quality management, improve after-sale service, and provide satisfactory products and services with the introduction of foreign advanced detection equipment. With good quality and stability, our series products have been used in the Beijing Central Stadium for four consecutive years. In 2005, our products were accepted by the ITF and the Beijing Olympic Organizing Committee, with the approval of using our audio equipment for Olympic Stadiums.
Our products won the honorary title of "10 best-known Speaker Brands in China" and "Qualified Products of Quality Supervision", and received the CCC, CB and BE and other quality certifications. At present, our audio equipment has been exported to South Korea, Russia, the Middle East, Southeast Asia, America and other countries and areas.
