Eminence Delta 15LF Speaker (500 Watts, 15 in.)

Eminence LF models are specially designed with extended Xmax to deliver more bass than standard models and provide 'a true woofer' for three-way applications. Performance optimized for high power bass in sound reinforcement systems, bass guitar combos, club music systems and stage monitors.

Features
Kapton coil former for increased rigidity and thermal protection

Polyamide-imide coated two-layer, 29ga., copper voice coil for improved power handling and durability

Ferrite magnet

Vented and extended core for increased power handling

Premium pressed steel basket for maximum strength

Paper cone

Rolled cloth cone edge with deep corrugations for extended Xmax

Solid composition paper dust cap

Technical Info

Nominal basket diameter: 15 in., 381mm

Impedance: 4 ohms or 8 ohms

Power rating: 500 Watts RMS

Music Program: 1000 Watts

Resonance: 39Hz

Usable frequency range: 42Hz - 3.2kHz

Magnet weight: 56oz.

Gap height: 0.375 in., 9.52mm

Voice coil diameter: 2.5 in., 63.5mm

Mounting Information
Recommended enclosure volume: 92 - 150 liters

Recommended enclosure volume (vented): 3.25 - 5.3 cu. ft.

Overall diameter: 15.15 in., 384.8mm

Baffle hole diameter: 13.77 in., 349.6mm

Front sealing gasket: fitted as standard

Rear sealing gasket: fitted as standard

Mounting holes diameter: 0.25 in., 6.4mm

Mounting holes B.C.D.: 14.56 in., 369.9mm

Depth: 6.05 in., 153.6mm

Shipping weight: 15.3lbs., 7 kg.

Thiele-Small Parameters
Resonant frequency (fs): 39Hz

Impedance (Re): 6.11 ohms

Coil inductance (Le): 1.37mH

Electromagnetic Q (Qes): 0.52

Mechanical Q (Qms): 6.3

Total Q (Qts): 0.48

Compliance equivalent volume (Vas): 241.0 liters (8.51 cu. ft.)

Peak diaphragm displacement volume (Vd): 419cc

Mechanical compliance of suspension (Cms): 0.23mm/N

BL product (BL): 14.6 T-M

Diaphragm mass inc. airload (Mms): 75 grams

Equiv. resistance of mechanical suspension loss (Rms): 3.19N*sec/M

Efficiency bandwidth product (EBP): 75

Voice coil overhang (Xmax): 4.8mm

Surface area of cone (Sd): 856.3cm2

Impedance at resonance (Zmax): 72 ohms

Maximum mechanical limit (Xmech): 16.5mm

Important Note

Watts: The guaranteed long term power rating throughout the usable frequency range of the speaker.

(Translation: the speaker will operate continuously at any frequency within the speakers specified frequency range when driven at this power. The "Watts" rating is similar to RMS, but is really more indicative of long term thermal capability.)

Music Program: The speaker will safely and reliably handle the varying frequencies of musical content at this power rating. The "Music Program" rating is more indicative of what you can expect in the real world with the speaker operating within the appropriate enclosure reproducing music or vocal audio program.