Features:
NX121B is a single 21" low frequency enclosure designed for subbass reinforcement to NX series, fitted with
one 21" woofer with 4.5" high temperature voice coil.
NX121BA is equipped with BA1.8 digital amplifier module based on NX121B to be an active subwoofer.
Features:
1. High quality plywood with polyurea waterproof paint
2. Application of coupling technology
3. Coaxial design
4. Small size,high SPL
6. Support pole mounting,can be hung,more convenient to install
7. Good chioce for big moving performance,clubs,multi-purpose hall, theater and stadium
Main Product Introduction:
1.Line Array System: LA series, MLA series
2. Monitor System : MR series
3. PA two-way loudspeaker system: U series,QS series, FT series
4. Multi-purpose MINI System: MINI series
5. Column system: K series
6. Plastic system: CX series
7. Long through system: LT series
8. Karaoke sytem: IW series, PR series and KW series
9. Active Series: KS and U Active series
10. Electronice products: amplifier and processor
Factory Introduction:
FDB Audio Manufacture Co., Ltd is specialized in researching, developing and manufacturing in PRO audio products. The main products are professional transducers(HF driver & woofer), speaker cabinets and electronic products like amplifiers and processors.
FDB Audio adopts the world' S top-aided software and advanced techonoloy, owns advanced production equipments and testing apparatus, establishes cooperation development mechanisms with a number of world top grade materials and accessories manufacturers. Some important materials are imported from abroad, like voice coil, diaphragm and paper cone.
FDB Audio has established and strictly enforced the standard quality management system in accordance with ISO 9001: 2008. "Strictly enforce sound processes and standards, full quality control and customer satisfaction" is the quality policy.
Mr. Harry Xia is the boss of FDB Audio, graduated from Physical department of Zhenzhou University. He is engineer, has done proaudio district more than 20 years. He once worked for R&D department of the state-run speaker factory in Henan province about 3 years after graduating university, then worked for a Taiwan speaker factory in Guangdong about 2 years. After that, he joined Elder Audio as the sole engineer, factory manager and also one shareholder of this factory, Thoman and Proel, they developed new models together. He worked for Elder audio about 9 years, quitted by the end of 2005 and established FDB Audio in Jan of 2006.
During 9 years effort, FDB Audio has gained good feedbacks from local and overseas market. The customers said " The quality is very stable, reliability and consistency are very good".
Factory Pictures:
Factory Contacts:
Web:
fdbaudiochina.en.made-in-china.com
| FREQUENCY RESPONSE(-3dB) |
35Hz-300Hz |
| DRIVERS |
1×21"(530mm)/4.5"voice coil LF |
| RATED POWER |
800W RMS,3200W peak |
| SENSITIVITY |
100dB 1watt/1 metre |
| MAXIMUM SPL |
129dB continuous,135dB peak |
| IMPEDANCE |
4 ohms nominal |
| INPUT CONNECTORS |
2×Speakon NL4 |
| PACKING SIZE |
860mm×692mm×685mm |
| NET WEIGHT |
58kg/pc |
| GROSS WEIGHT |
64kg/pc |
Audited Supplier 
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