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L21/8613 Professional Loudspeaker 21 Inch Subwoofer Speaker With 6'' Voice Coil, Best Quality Speaker Unit Driver

Products > 21inch Speaker > L21/8613 Professional Loudspeaker 21 Inch Subwoofer Speaker With 6'' Voice Coil, Best Quality Speaker Unit Driver
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L21/8613 Professional Loudspeaker 21 Inch Subwoofer Speaker With 6'' Voice Coil, Best Quality Speaker Unit Driver

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1.98dB sensitivity 1w/1m
2.23Hz-900Hz frequency response range
3. Heavy duty(330mm OD) ceramic magnet
4.A B/L n excess of 46 T/m for dynamic voicing
5.150mm/6 inch 2 layers inside/2 layers outside voice coil with polyimide fiberglass former
6.Optimum winding length for longer voice coil displacement and increased linear excursion
7.Double spider for improved excursion control and linearity
8.Double treated cone for water protection
9.BL/Re maximized for high quality horn-loaded application


Key attributes

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Packaging and delivery

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Lead time

Quantity (pieces)1 - 100> 100
Lead time (days)40To be negotiated


Customization options

Customized logo (Min. order: 100 pieces)

Customized packaging (Min. order: 100 pieces)

Graphic customization (Min. order: 100 pieces) 


Product descriptions from the supplier

Products Description

General Specifications

Nominal Diameter
530/21
mm/inch

Rated Impedance
8
ohm

Nominal Power handling1
1200
Watts

Program Power2
2400
Watts

Sensitivity(lw/lm)3
98
dB

Frequency Range4
23-900
Hz

Minimum Impedance(Zmin)
9.3
ohm

Voice Coil Diameter
150/6
mm/inch

Voice Coil Material
Copper
Voice Coil Winding Depth
30
mm

Number of layers
4(inside/outside)


Magnet gap depth
12
mm

Surround Shape
Tripple-roll


Basket
Cast Aluminum


Flux Density
1.1
T

Magnet Material/Mass
Ceramic


Thiele-Small parameters
Resonance frequency
Fs
23.4
Hz
DC resistance
Re
6.5
ohm
Mechanical factor
Qms
14.4

Electrical factor
Qes
0.22

Total factor
Qts
0.22

Mechanical compliance
Cms
0.1
mm/N
Mechanical resistance of suspension losses
Rms
4.94
mech-ohm
Effective Moving Mass
Mms
485
gr
Half-space efficiency
Eff
2.14
%
BL Factor
BL
45.9
T.m
Equivalent Cas air load
Vas
385
liters
Effective piston area
Sd
0.1698
m2
Max.linear excursion
Xmax
12
mm
Voice-coil inductance
LelK
6.24
mH
Mounting Information
Overall Diameter
556
mm

Bolt Circle Diameter
528
mm

Bolt Hole Diameter
6.5
mm

Baffle Cutout Diameter
493
mm

Overall Depth
220
mm

Net Weight 
28.5
Kg

Gross Weight
31.5
KG

Carton Box Size
585*585*240
mm



Why Choose Us


Customized Services

Product Classification

Company Profile


Customer Visits & Exhibitions


Q: What’s the MOQ?

A: Different size with different MOQ, you can check with us which model are you interested in？


Q: What’s the best price?

A: We have details price list based on order quantity.


Q: What is your sample terms?

A: Normally, we need to charge of the sample and freight cost.


Q: How long is delivery date?

A: We are manufacture, all order is based on customer order quantity, Usually it will take about 20-35days for production. Q: What is service can we offer? A: We can offer OEM and ODM service.


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