SIGMA PRO 18A Professional Series
Recommended for professional audio as a woofer in vented enclosures.
SPECIFICATION
- Nominal Basket Diameter 18", 457.2 mm
- Nominal Impedance 8 ohms
- Power Rating Watts 650 W / Music Program 1300 W
- Resonance 28 Hz
- Usable Frequency Range 41 Hz - 2.4 kHz
- Sensitivity 99
- Magnet Weight 120 oz.
- Gap Height 0.375", 9.53 mm
- Voice Coil Diameter 3", 76.2 mm
THIELE & Small Parameters
- Resonant Frequency (fs) 28 Hz
- DC Resistance (Re) 6.29
- Coil Inductance (Le) 1.90 mH
- Mechanical Q (Qms) 8.28
- Electromagnetic Q (Qes) 0.30
- Total Q (Qts) 0.29
- Compliance Equivalent Volume (Vas) 441.2 liters / 15.6 cu. ft.
- Peak Diaphragm Displacement Volume 695 cc
- Mechanical Compliance of Suspension (Cms) 0.24 mm/N
- BL Product (BL) 22.1 T-M
- Diaphragm Mass inc. Airload (Mms) 130 grams
- Efficiency Bandwidth Product (EBP) 93
- Maximum Linear Excursion (Xmax) 6.1 mm
- Surface Area of Cone (Sd) 1140.0 cm²
- Maximum Mechanical Limit (Xlim) 18.0 mm
MOUNTING Information
- Recommended Enclosure Volume
Sealed N/A
Vented 93-212 liters/3.3-7.5 cu.ft.
- Overall Diameter 18", 457.2 mm
- Baffle Hole Diameter 16.56", 420.5 mm
- Front Sealing Gasket fitted as standard
- Rear Sealing Gasket fitted as standard
- Mounting Holes Diameter 0.28", 7.1 mm
- Mounting Holes B.C.D. 17.25", 438.2 mm
- Depth 8.15", 207 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
|
NETTIKAUPPA 