Audited Supplier
K-21DS115-4
Without Screen
Home, Commercial, Stage/Outdoor/Party
Live Performance / Sports / Nightclubs and Bars
21 Inch Subwoofer
530mm/21.0inch
4 Ohm
1700W
3400W
30-1000 Hz
97 dB
120 Hz
Neodymium Inside Slug
115 mm(4.5 in)
Aluminium
36mm/1.42in
21.6*21.6*10.1 in
15 Kg
2/4/8ohm
OEM/ODM
Rigid Double Corrugated Shipping Carton
Guangdong, China
Product Description
21 Inch 4 Ohm Neodymium Subwoofer PA Speaker with Powerful Bass Performance 2/4/8Ohm
Use for pro DJ speakers, pro PA speakers, pro karaoke speakers, live sound speakers, fixed installation speakers, studio monitors and home audio speakers.
·97 dB sensitivity
·30-1000 Hz response
·115 mm(4.5 in) Aluminium voice coil
·1700 W continuous program power capacity
TYPE | ND SUBWOOFER | |
Nominal Diameter | 530/21 | mm/in |
Rated impedance | 8 | ohm |
Minimum Impedance | 6.4 | ohm |
AES Power Handing | 1700 | W |
Max Power Handing | 3400 | W |
Sensitivity | 97 | dB |
Frequency Range | 30-1000 | Hz |
Voice Coil Diameter | 115/4.5 | mm/in |
Winding Material | Aluminium | |
Former Material | Glass Fibre | |
Winding Depth | 36/1.42 | mm/in |
Megnetic Gap Depth | 14/0.55 | mm/in |
Megnetic Material | Neodymium Inside Slug |
THIELE & SMALL PARAMETERS | |||
Resonance frequency | Fs | 27 | Hz |
Dc resistance | Re | 4.4 | ohm |
Mechanical factor | Qms | 6.5 | |
Electrical factor | Qes | 0.23 | |
Total factor | Qts | 0.22 | |
BL factor | Bl | 46.6 | T.M |
Effective Moving mass | Mms | 405 | g |
Effective Cas air load | Vas | 200 | liters |
Effective piston area | Sd | 1680 | cm2 |
Inductance | Le | 4.3 | mh |
Max linear excursion | Xmax | ±15 | mm |
EBP | 117 | Hz | |
MOUNTING AND SHIPPING | ||
Overall Diameter | 550/21.6 | mm/in |
Bolt Circle Diameter | 528/20.7 | mm/in |
Mount Baffle Cut-out | 506/19.9 | mm/in |
Speaker Depth | 257/10.1 | mm/in |
Flange And Gasket Thickness | 15/0.59 | mm/in |
| N.W.(1pc) | 15 / 33.0 | kg/lb |
| G.W. (1 pcs) | 20.2 / 44.5 | kg/lb |
| Shipping Size (1pcs) | 640x610x350 mm | 25.2x24.0x13.7 in |
Welcome to CONTACT US
Our advantage
·Have a product development and design team.On average, at least 10 new products are developed annually.
·Have a product development and design team.On average, at least 10 new products are developed annually.
·Our R&D personnel have 22 years of design and development experience
·Development assistance software: FINEMOTER, LMS, CLIO, COMSOL
TJ Audio Speakers is favored and recognized by customers for its high-quality products and beautiful prices. We look forward to receiving your inquiries!
·Development assistance software: FINEMOTER, LMS, CLIO, COMSOL
TJ Audio Speakers is favored and recognized by customers for its high-quality products and beautiful prices. We look forward to receiving your inquiries!
Q1: How can I get sample?
A: If you need a sample test, please contact us. We will make it according to your requirements. But you may need to pay the sample fee and its shipping fee.
A: If you need a sample test, please contact us. We will make it according to your requirements. But you may need to pay the sample fee and its shipping fee.
Q2: How much is the shipping cost for samples?
A: Different sample have different weights and packaging sizes. Please contact us for details.
A: Different sample have different weights and packaging sizes. Please contact us for details.
Q3: Can I print my logo on the product and packaging?
A: Of course you can. Just need you to send us your logo design and authorization documents, we will make it on the product and packaging according to your request for your confirmation.
A: Of course you can. Just need you to send us your logo design and authorization documents, we will make it on the product and packaging according to your request for your confirmation.
Q4: Can you produce according to customer's design?
A: Yes. We mainly do OEM/ODM services.
A: Yes. We mainly do OEM/ODM services.
Q5: How are your products packaged?
A: Generally, we pack in brown cartons.
A: Generally, we pack in brown cartons.
Q6: How to strictly control the quality of products?
A: We have strict quality control on products from raw materials to production process, and all products are tested before leaving the factory.
A: We have strict quality control on products from raw materials to production process, and all products are tested before leaving the factory.
Packing:
1)Neutral Packing 2)Strong Carton 3)Reinforce the edge with hard paper 4)Put into another shipping carton
Shipping:
1)Ocean Transport 2)Air Transport 3)Rail Transport 4)Road Transport 5)International Express
