EMINENCE ALPHA-15 A 15″ 200 W 8 Ohm SPEAKER

15" Speaker 300 W 8 Ohms

Recommended for professional audio as a woofer in sealed and vented enclosures.

The 2226J 15" low frequency transducer represents the results of JBL's latest engineering research in high power transducer design. For increased power handling while reducing power compression, a unique direct voice coil-to-air heat dissipation method called Vented Gap Cooling has been used. This process pumps air through the magnetic gap and directly over and around the voice coil to provide immediate heat transfer and reduction in operating temperature. Through the use of new computer-aided magnet optimization and analysis techniques comes a new weight-optimized Symmetrical Field Geometry (SFG) magnet structure, resulting in a reduction of overall driver weight and a significant reduction in harmonic distortion. This new magnet structure offers much of the weight advantage of rare earth magnet structures without their prohibitive cost. Specifications: *Power handling: 600 watts RMS *Voice coil diameter: 4" *Nominal impedance: 16 ohms *Frequency Range: 30-2,500 Hz *Magnet assembly weight: 15 lbs. *Fs: 40 Hz *SPL: 97 dB 1W/1m *Vas: 6.2 cu. ft. *Qms: 5.0 *Qes: 0.33 *Qts: 0.31 *Xmax: 7.6 mm *Dimensions: Overall Diameter: 15-1/4“, Cutout Diameter: 14“, Mounting Depth: 5-1/2“.

• Nominal Basket Diameter 15“, 381 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 500 W / Music Program 1000 W
• Resonance 47 Hz
• Usable Frequency Range 46 Hz - 4 kHz
• Sensitivity 101
• Magnet Weight 80 oz.
• Gap Height 0.375“, 9.53 mm
• Voice Coil Diameter 3“, 76.2 mm

• Resonant Frequency (fs) 47 Hz
• DC Resistance (Re) 5.23
• Coil Inductance (Le) 1.01 mH
• Mechanical Q (Qms) 8.01
• Electromagnetic Q (Qes) 0.40
• Total Q (Qts) 0.38
• Compliance Equivalent Volume (Vas) 167.7 liters / 5.9 cu. ft.
• Peak Diaphragm Displacement Volume 274 cc
• Mechanical Compliance of Suspension (Cms) 0.16 mm/N
• BL Product (BL) 16.6 T-M
• Diaphragm Mass inc. Airload (Mms) 72 grams
• Efficiency Bandwidth Product (EBP) 118
• Maximum Linear Excursion (Xmax) 3.2 mm
• Surface Area of Cone (Sd) 856.3 cm²
• Maximum Mechanical Limit (Xlim) 13.2 mm

• Recommended Enclosure Volume Sealed N/A Vented 54-184 liters/1.9-6.5 cu.ft.
• Overall Diameter 15.32“, 389.1 mm
• Baffle Hole Diameter 14.0“, 355.6 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. 14.56“, 369.9 mm
• Depth 6.06“, 154 mm

• Aluminum voice coil
• Polyimide former
• Ferrite magnet
• Vented core
• Die-cast aluminum basket
• Paper Cone
• Cloth cone edge
• Solid composition paper dust cap

The high power handling and robust construction of the 2226H make it a natural for tour sound and fixed sound reinforcement use, while the low distortion and smooth response make it an ideal choice for critical high level monitoring applications.

To increase power handling while reducing power compression, JBL engineers created a unique, direct voice coil-to-air heat dissipation method called Vented Gap Cooling. This process pumps air through the magnetic gap and directly over and around the voice coil to provide immediate heat transfer and reduction in operating temperature—a direct improvement in power compression.

The 2226H incorporates a SFG (Symmetrical Field Geometry) magnetic structure. Computer-aided magnet optimization and analysis allowed JBL engineers to optimize magnet weight, flux density and reduced distortion. This patented magnet structure offers much of the weight advantage of rare earth magnet structures without their higher cost.

JBL 2226H 15" Low Frequency Transducer Specifications:

• Nominal Diameter : 15" (380 mm)
• Rated Impedance : 8ohms
• Power Capacity : 600W AES continuous pink noise
• Sensitivity : 97dB SPL, 1W, 1m (3.3 ft)
• Frequency Range : 30Hz-2.5kHz
• Power Compression - at —10 dB power (60 W) : 0.7dB
• Power Compression - at —3 dB power (300 W) : 2.5dB
• Power Compression - at rated power (600 W) : 4.0dB
• Distortion - 2nd harmonic :

• Nominal Basket Diameter 15“, 381 mm
• Nominal Impedance 16 ohms
• Power Rating Watts 400 W / Music Program 800 W
• Resonance 40 Hz
• Usable Frequency Range 48 Hz - 4 kHz
• Sensitivity 100
• Magnet Weight 56 oz.
• Gap Height 0.375“, 9.53 mm
• Voice Coil Diameter 2.5“, 63.5 mm

• Resonant Frequency (fs) 40 Hz
• DC Resistance (Re) 6.3
• Coil Inductance (Le) 0.64 mH
• Mechanical Q (Qms) 8.05
• Electromagnetic Q (Qes) 0.57
• Total Q (Qts) 0.53
• Compliance Equivalent Volume (Vas) 270.7 liters / 9.56 cu.ft
• Peak Diaphragm Displacement Volume (Vd) 233 cc
• Mechanical Compliance of Suspension (Cms) 0.26 mm/N
• BL Product (BL) 13.2 T-M
• Diaphragm Mass inc. Airload (Mms) 62 grams
• Efficiency Bandwidth Product (EBP) 70
• Maximum Linear Excursion (Xmax) 2.7 mm
• Surface Area of Cone (Sd) 864.6 cm²
• Maximum Mechanical Limit (Xlim) 11.1 mm

• Recommended Enclosure Volume Sealed 37-42.5 liters/1.3-1.5 cu.ft. Vented 82-161.4 liters/2.9-5.7cu.ft.
• Overall Diameter 15.15“, 384.8 mm
• Baffle Hole Diameter 13.77“, 349.6 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.25“, 6.4 mm
• Mounting Holes B.C.D. 14.56“, 369.9 mm
• Depth 6.05“, 154 mm

• Aluminum voice coil
• Polyimide former
• Ferrite magnet
• Vented core
• Pressed steel basket
• Paper Cone
• Cloth cone edge
• Solid composition paper dust cap