Description:
Materials of Construction

· Kapton coil former
· Polyamide-imide coated copper voice coil
· APS ferrite magnet
· Pressed steel chassis
· Paper cone
· Plasticised cloth (linen) cone edge
· Solid composition paper dust dome

For all high power bass applications including bass guitar.

Eminence Model No. Delta 15
Nominal Chassis Diameter: 15", 381mm
Impedance: 81/2 or 161/2
Power Rating: 300WRMS
Resonance: 40Hz
Usable Frequency Range: 40Hz to 4kHz
Average Sensitivity 1W 1m: 101dB
Magnet Weight: 56oz.
Magnet Gap Depth: 0.375", 9.53mm
Voice Coil Diameter: 2.5", 63.5mm

Mounting Information

Overall Diameter: 15.1", 381.7mm
Baffle Hole Diameter: 14.125", 359mm
Front Sealing Gasket: fitted as standard
Rear Sealing Gasket: fitted as standard
Fixing Holes Diameter (8 off): 0.275", 7mm
Fixing Hole P.C.D.: 14.562", 369.9mm
Depth: 6.05", 153.6mm
Weight: 12lbs, 5.48kg
Shipping Weight: 17.6lbs, 8kg

Thiele-Small Parameters

Resonant Frequency (fs): 40.27Hz
Impedance (Re): 6.991/2
Coil Inductance (Le): 0.86mH
Electromagnetic Q (Qes): 0.537
Mechanical Q (Qms): 6.56
Total Q (Qts): 0.49
Compliance Equivalent Volume (Vas): 293.11 litres

10.4 cu.ft

Peak Diaphragm

Displacement Volume (Vd): 231.38cc

Mechanical Compliance

of Suspension (Cms): 0.2846mm/N
BL Product (BL): 13.59 T-M
Diaphragm Mass inc. Airload (Mms): 54.89grams

Equiv. Resistance of Mechanical

Suspension Loss (Rms): 2.1166N*sec/M
Efficiency Bandwidth Product (EBP): 76.6
Voice Coil Overhang (Xmax): 2.7mm
Surface Area of Cone (Sd): 856.34cm2
Impedance at Resonance (Zmax): 521/2

John