Eminence Delta 15 Speaker (400 Watts, 15 in.)

This 15 in. speaker from the Delta Series excels in all high-power bass applications, including bass guitar.

Features
Kapton coil former

Ferrite magnet

Pressed steel basket

Polyamide-imide coated aluminum voice coil

Paper cone/cloth cone edge

Solid composition paper dust cap

Technical Info

Nominal Basket Diameter: 15 in., 381mm

Impedance: 8 or 16 ohm

Power Rating: 400W rms

Music Program: 800W

Resonance: 40Hz

Usable Frequency Range: 40Hz - 4kHz

Average Sensitivity: 1W @ 1m 101 dB

Magnet Weight: 56oz.

Gap Height: 0.375 in., 9.52mm

Voice Coil Diameter: 2.5 in., 63.5mm

Mounting Information
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 Hole B.C.D.: 14.56 in., 369.9mm

Depth: 6.05 in., 153.6mm

Shipping Weight: 14.6 lbs, 6.6 kg

Thiele-Small Parameters
Resonant Frequency: 40Hz

Impedance (RE): 6.9 ohm

Coil Inductance (Le): 0.86mH

Electromagnetic Q (Qes): 0.54

Mechanical Q (Qms): 6.56

Total Q (Qts): 0.49

Compliance Equivalent Volume (Vas): 293 liters/10.4 cu.ft

Peak Diaphragm Displacement Volume (Vd): 231cc

Mechanical Compliance of suspension (Cms): 0.28mm/N

BL Product (BL): 13.6 T-M

Diaphragm Mass inc. Airload (Mms): 55 grams

Equiv. Resistance of mechanical suspension loss (Rms): 2.12N*sec/M

Efficiency Bandwidth Product (EBP): 77

Voice Coil Overhang (Xmax): 2.7mm

Surface Area of Cone (Sd): 856.3cm2

Impedance at Resonance (Zmax): 52 ohm

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.