| Content | General
Product type
Loudspeaker Chassis
Pitch Circle Diameter
194 mm
Cut- out Measurement
181 mm
Diameter of fixing holes
5.6 mm
Nominal Impedance
4 Ohm(s)
Nominal Load Capacity
20 W
Sensitivity (1 W / 1 m)
96.1 dB
Frequency response
80 - 4600 Hz
Voice Coil Material
copper
Depth of the magnetic gap
6.35 mm
Thiele & Small Parameter
Fs (Resonance Frequency)
134.6 Hz
Re (DC resistance)
3.6 Ohm(s)
Qms (mechanical quality)
18.78
Le (inductance of the voice coil)
0.33 mH
Qes (electrical quality)
0.92
Qts (overall quality)
0.88
Vas (equivalent volume)
9.62
BL (power factor)
5.74 T/m
Xmax (maximum displacement)
1.59 mm
Cms (elasticity of the suspension)
0.13 mm/N
Sd (membrane area)
231 cm²
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| 400 W continuous program power capacity |
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| 100° nominal coverage |
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| 75 – 20000 Hz response |
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| 94 dB sensitivity |
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| XO-1 dedicated crossover network |
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50 mm (2 in) copper voice coil
70 - 3000 Hz response
94 dB sensitivity
Neodymium magnet allows a very light yet powerful motor assembly
Shorting copper cap for extended HF response
400 W continuous program power capacity
Ventilated voice coil gap for reduced power compression
Compatible with NEXO PS8
- Specifications
- Nominal diameter200 mm (8.0 in)
- Nominal impedance8 Ω
- Minimum impedance6.6 Ω
- Nominal power handling *200 W
- Continuous power handling *400 W
- Sensitivity (1W/1m) *94.0 dB
- Frequency range65 - 3000 Hz
- Voice coil diameter51 mm (2.0 in)
- Winding materialCopper
- Former materialGlass Fibre
- Winding depth17 mm (0.65 in)
- Magnetic gap depth8 mm (0.31 in)
- Flux density1.05 T
- Design
- Surround shapeDouble Roll
- Cone shapeExponential
- Magnet materialNeodymium Inside Slug
- SpiderSingle
- Pole designStraight Pole
- Woofer cone treatmentTWP Waterproof Both Sides
- Recommended enclosure14.0 dm3 (0.49 ft3)
- Recommended tuning65 Hz
- Parameters *
- Fs66 Hz
- Re5.3 Ω
- Qes0.41
- Qms3.6
- Qts0.37
- Vas14.0 dm3 (0.5 ft3)
- Sd220.0 cm2 (34.1 in2)
- η₀1.0 %
- Xmax7.0 mm
- Xvar7.0 mm
- Mms28 g
- Bl12.4 Txm
- Le0.5 mH
- EBP160 Hz
- Mounting And Shipping Info
- Overall diameter225 mm (8.8 in)
- Bolt circle diameter210 mm (8.3 in)
- Baffle cutout diameter187.0 mm (7.4 in)
- Depth90 mm (3.5 in)
- Flange and gasket thickness11 mm (0.4 in)
- Air volume occupied by driver1.1 dm3 (0.04 ft3)
- Net weight1.8 kg (4.0 lb)
- Shipping units1
- Shipping weight2.2 kg (4.8 lb)
- Shipping box300x160x180 mm (11.8x6.3x7.1 in)
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Nominal Specifications
* Nominal Diameter 8“, 200 mm
* Overall Diameter 8.81/8.18“, 223.8/207.9 mm
* Bolt Circle Diameter 8.27“, 210 mm
* Baffle Cutout Diameter 7.24“, 184 mm
* Depth 4.59“, 116.7 mm
* Flange and Gasket Thickness 0.42“, 10.7 mm
Electrical Specifications
* Minimum Impedance 6.5 Ohm
* Nominal Impedance 8 Ohm
* Nominal Power Handling*** 150 W
* Maximum Power Handling**** 300 W
* Sensitivity (1W/1m) 94 dB
* Frequency Range 80 - 6300 Hz
* Voice Coil Diameter 2“, 52 mm
* Winding Material Aluminium
* Former Material Glass Fiber
* Winding Depth 0.53“, 13.5 mm
* Magnetic Gap Depth 0.31“, 8 mm
* Flux Density 1 T
THIELE & SMALL Parameters
* Resonant Frequency (fs) 76 Hz
* DC Resistance (Re) 5.8 Ohm
* BL Product (BL) 9.86 N/A
* Diaphragm Mass inc. Airload (Mms) 20.9 grams
* Mechanical Compliance of Suspension (Cms) 0.2 mm/N
* Rms 2.11 Kg/s
* Electromagnetic Q (Qes) 0.59
* Mechanical Q (Qms) 4.72
* Total Q (Qts) 0.53
* Compliance Equivalent Volume (Vas) 0.42 ft³, 11.9 dm³
* Surface Area of Cone (Sd) 31“², 200 cm²
* Maximum Linear Excursion (Xmax)* 5.42 mm
* Xdamage** 12 mm
* Coil Inductance (Le) 0.55 mH
* Diaphragm mass (Mmd) 19.4 g
* Eta Zero 0.85 %
Notes
* *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
* **Maximum excursion before permanent damage
* ***2 Hours Test According to AES 2-1984 Rev. 2003
* ****Maximum power is defined as 3dB greater than nominal power
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JBL 124-58001-00 Woofer from JBL for control 28 speaker. - JBL Control 28 Factory Speaker Woofer Part # 124-58001-00
- This is a complete brand new JBL, Control 28 woofer
- Voice coil: 1-1/2" (25mm)
- Diameter: 8-1/4" (210mm) 9-1/4" (235mm) diagonally
- Impedance: 8 ohm, DCR: 6 ohm
- Poly cone with rubber edge
- Fits JBL Driver and Cabinet Models:
JBL: Control 28, Control 28T, Control 28T60, Control 28WH, 123-10002-00, 1231000200124-58001-00, 1245800100
| ALPHA- Serie 100W- 200W
Recommended for professional audio mid-range applications in a sealed cabinet, or as a mid-bass in a vented
satellite enclosure.
SPECIFICATION
- Nominal Basket Diameter 8“, 203.2 mm
- Nominal Impedance 8 ohms
- Power Rating Watts 125 W / Music Program 250 W
- Resonance 73 Hz
- Usable Frequency Range 58 Hz - 5 kHz
- Sensitivity 94
- Magnet Weight 20 oz.
- Gap Height 0.25“, 6.35 mm
- Voice Coil Diameter 1.5“, 38.1 mm
THIELE & Small Parameters
- Resonant Frequency (fs) 73 Hz
- DC Resistance (Re) 5.3
- Coil Inductance (Le) 0.44 mH
- Mechanical Q (Qms) 4.6
- Electromagnetic Q (Qes) 0.68
- Total Q (Qts) 0.59
- Compliance Equivalent Volume (Vas) 17.7 liters / 0.6 cu. ft.
- Peak Diaphragm Displacement Volume (Vd) 67 cc
- Mechanical Compliance of Suspension (Cms) 0.28 mm/N
- BL Product (BL) 7.8 T-M
- Diaphragm Mass inc. Airload (Mms) 17 grams
- Efficiency Bandwidth Product (EBP) 107
- Maximum Linear Excursion (Xmax) 3.2 mm
- Surface Area of Cone (Sd) 210.0 cm²
- Maximum Mechanical Limit (Xlim) 7.1 mm
MOUNTING Information
- Recommended Enclosure Volume
Sealed 5-7 liters / 0.18-0.25 cu. ft.
Vented 16.7-25.5 liters / 0.59-0.90 cu. ft.
- Overall Diameter 8.24“, 209.2 mm
- Baffle Hole Diameter 7.13“, 181 mm
- Front Sealing Gasket fitted as standard
- Rear Sealing Gasket fitted as standard
- Mounting Holes Diameter 0.22“, 5.5 mm
- Mounting Holes B.C.D. 7.75“, 196.9 mm
- Depth 3.25“, 83 mm
MATERIALS of Construction
- Copper voice coil
- Polyimide former
- Ferrite magnet
- Vented core
- Pressed steel basket
- Paper Cone
- Cloth cone edge
- Solid composition paper dust cap
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