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| Content | General
Product type
Loudspeaker Chassis
Overall diameter
457.2 mm
Pitch Circle Diameter
7.1 mm
Cut- out Measurement
421.1 mm
Diameter of fixing holes
438.2 mm
Nominal Impedance
8 Ohm(s)
Nominal Load Capacity
800 W
maximum rated load
1600 W
Sensitivity (1 W / 1 m)
98 dB
Frequency response
38 - 700 Hz
Voice Coil Material
copper
Thiele & Small Parameter
Fs (Resonance Frequency)
32 Hz
Re (DC resistance)
5.39 Ohm(s)
Qms (mechanical quality)
10.66
Le (inductance of the voice coil)
1.21 mH
Qes (electrical quality)
0.34
Qts (overall quality)
0.33
Vas (equivalent volume)
391.61
BL (power factor)
19.39 T/m
Xmax (maximum displacement)
8 mm
Cms (elasticity of the suspension)
0.21 mm/N
Sd (membrane area)
1159 cm²
|
Specifications
Nominal Diameter 545 mm (21“)
Nominal Impedance 4 Ω
Rated Power AES 1000 W
Continuous Program Power 2000 W
Sensitivity @ 1W/1m 97.0 dB
Voice Coil Diameter 100 mm (4“)
Voice Coil Winding Depth 25 mm
Magnetic Gap Depth 17 mm
Flux Density 0.94 T
Magnet Weight 536 g
Net Weight 10.5 kg
Manual/Εγχειρίδιο
|
- 95 dB Sensitivity 1 W / 1 m
- 1500 W Power handling
- 4" Copper sandwich voice coil for low power compression
- Neodymium magnet system
- Double treated cone for water protection
- Triple aluminum demodulating rings for ultra low distortion
- Optimal for high output Subwoofers
|
Nominal Specifications
Nominal Diameter 18“, 460 mm
Overall Diameter 18.11“, 460 mm
Bolt Circle Diameter 17.32“, 440 mm
Baffle Cutout Diameter 16.61“, 422 mm
Depth 7.65“, 194.3 mm
Flange and Gasket Thickness 0.55“, 13.9 mm
Electrical Specifications
Minimum Impedance 6.3 Ohm
Nominal Impedance 8 Ohm
Nominal Power Handling*** 1200 W
Maximum Power Handling**** 2400 W
Sensitivity (1W/1m) 98 dB
Frequency Range 35 - 1600 Hz
Voice Coil Diameter 4“, 100 mm
Winding Material Kupfer
Former Material Glass Fiber
Winding Depth 1.14“, 28.9 mm
Magnetic Gap Depth 0.47“, 12 mm
Flux Density 1.22 T
THIELE & SMALL Parameters
Resonant Frequency (fs) 35 Hz
DC Resistance (Re) 5 Ohm
BL Product (BL) 24.8 N/A
Diaphragm Mass inc. Airload (Mms) 211.8 grams
Mechanical Compliance of Suspension (Cms) 0.098 mm/N
Rms 4.19 Kg/s
Electromagnetic Q (Qes) 0.38
Mechanical Q (Qms) 11.1
Total Q (Qts) 0.37
Compliance Equivalent Volume (Vas) 6.74 ft³, 190.8 dm³
Surface Area of Cone (Sd) 181.97“², 1174 cm²
Maximum Linear Excursion (Xmax)* 12.45 mm
Xdamage** 21 mm
Coil Inductance (Le) 1.26 mH
Diaphragm mass (Mmd) 189.1 g
Eta Zero 2.1 %
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
| DELTA PRO Serie 400W
Recommended for professional audio in both sealed and vented enclosures. Ideal for full-range, mid/hi, and
monitor wedges.
SPECIFICATION
- Nominal Basket Diameter 18“, 457 mm
- Nominal Impedance 8 ohms
- Power Rating Watts 500 W / Music Program 1000 W
- Resonance 28 Hz
- Usable Frequency Range 37 Hz - 250 Hz
- Sensitivity 96
- Magnet Weight 67 oz.
- Gap Height 0.38“, 9.53 mm
- Voice Coil Diameter 2.5“, 63.5 mm
THIELE & Small Parameters
- Resonant Frequency (fs) 28 Hz
- DC Resistance (Re) 5.3
- Coil Inductance (Le) 3.43 mH
- Mechanical Q (Qms) 10.38
- Electromagnetic Q (Qes) 0.33
- Total Q (Qts) 0.32
- Compliance Equivalent Volume (Vas) 493.19 liters / 17.41 cu. ft.
- Peak Diaphragm Displacement Volume (Vd) 796.00 cc
- Mechanical Compliance of Suspension (Cms) 0.25 mm/N
- BL Product (BL) 18.9 T-M
- Diaphragm Mass inc. Airload (Mms) 128.1 grams
- Efficiency Bandwidth Product (EBP) 84
- Maximum Linear Excursion (Xmax) 6.7 mm
- Surface Area of Cone (Sd) 1188.0 cm²
- Maximum Mechanical Limit (Xlim) 15.0 mm
MOUNTING Information
- Recommended Enclosure Volume
Sealed N/A
Vented 85-297 liters/3.0-10.5 cu. ft.
- Overall Diameter 18.00“, 457.20 mm
- Baffle Hole Diameter 16.57“, 420.88 mm
- Front Sealing Gasket fitted as standard
- Rear Sealing Gasket fitted as standard
- Mounting Holes Diameter 0.28“, 7.11 mm
- Mounting Holes B.C.D. 17.25“, 438.15 mm
- Depth 8.13“, 206.50 mm
MATERIALS of Construction
- Copper voice coil
- Polyimide former
- Ferrite magnet
- Vented and extended core
- Die-cast aluminum basket
- Paper Cone
- Cloth cone edge
- Solid composition paper dust cap
|
Shape Cylindrical
Product type Cone driver
Brand Sica
Frequency coverage type Sub, Low
Dimensional category 18 inch
Front chape Cylindrical
External diametre 462 mm
Mounting diametre 415 mm
Magnet type Neodymium
Basket masterial Aluminium
Nominal impedance 8 ohm
Nominal power handling 1200 W
Max power handling 2400 W
Manufacturer sensitivity 97.3 dB
Calculated sensitivity 95 dB
Frequency response 35-700 Hz
Voice coil diameter 4 inch
Winding material Copper
Voice coil former Glass fiber
Winding depth 27 mm
Gap height 12 mm
Flux density 1.21 T
Depth 211 mm
Depth after front 196 mm
Front thickness 15 mm
Diamètre aimant (mm) 135 mm
Weight 7.2 kg
Fs 36.2 Hz
Re 5.2 ohm
Qes 0.42
Qms 6.56
Qts 0.39
Vas 189 L
Sd 1164.2 cm²
Cms 98 µm/N
Efficiency 2.07 %
Calculated efficiency 2.05 %
Xmax 8 mm
Xvar 10.1 mm
Mms 197 gr
BL 23.54 T.m
Le 1.35 mH
EBP 86
Dome material Paper
Cone material Paper
Surround material Cloth
Surround shape Double roll
Shipping weight 9 kg
|
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