Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Resonance
Usable Frequency Range
Sensitivity***
Magnet Weight
Gap Height
Voice Coil Diameter
Resonant Frequency (fs)
DC Resistance (Re)
Coil Inductance (Le)
Mechanical Q (Qms)
Electromagnetic Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Peak Diaphragm Displacement Volume (Vd)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass Inc. Airload (Mms)
Efficiency Bandwidth Product (EBP)
Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
Maximum Mechanical Limit (Xlim)
Recommended Enclosure Volume
Sealed
Vented
Overall Diameter
Baffle Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Coil Construction
Coil Former
Magnet Composition
Core Details
Basket Materials
Cone Composition
Cone Edge Composition
Dust Cap Composition
SPECIFICATION
THIELE & SMALL PARAMETERS
MOUNTING INFORMATION
MATERIALS OF CONSTRUCTION
Please see footnotes on back cover for information regarding Nominal Impedance, Power Rating and Sensitivity.
PRO AUDIO
2
PROFESSIONAL SERIES
EPA-C3015
51-113 ltr/1.8-4.0 cu. ft.
59-116 ltr/2.1-4.1 cu. ft.
15.32", 389.13mm
14.00", 355.60mm
Fitted As Standard
Fitted As Standard
.28", 7.11mm
14.56", 369.82mm
6.14", 155.96mm
17.10 lbs, 7.76 kg
Copper Voice Coil
Polyimide Former
Ferrite Magnet
Vented
Aluminum
Treated Paper
Sealed Cloth Edge
Treated Paper
15", 381mm
8 ohms
450W
35Hz
53Hz-2.6kHz
98
80 oz
.39", 9.91mm
3.0", 76.2mm
35Hz
5.8
1.17mH
11.80
.39
.37
286.73 ltr/10.12 cu. ft.
397.72cc
.28mm/N
15.7 T-M
73.4 grams
92
4.6mm
864.6cm
2
12.0mm
EPA-C3015
15"
EPA-C3018
EPA-C3018
85-156 ltr/3.0-5.5 cu. ft.
113-244 ltr/4.0-8.6 cu. ft.
18.00", 457.20mm
16.60", 421.64mm
Fitted As Standard
Fitted As Standard
.28", 7.11mm
17.25", 438.15mm
7.60", 193.04mm
19.5 lbs, 8.85 kg
Copper Voice Coil
Polyimide Former
Ferrite Magnet
Vented
Aluminum
Paper
Sealed Cloth Edge
Paper
18", 457mm
6 ohms
425W
29Hz
40Hz-1.0kHz
97.7
80 oz
.39", 10.01mm
3.0", 76.2mm
18"
29Hz
5.7
1.16mH
6.43
.43
.40
521.72 ltr/18.42 cu. ft.
538.30cc
.27mm/N
16.6 T-M
114.0 grams
67
4.6mm
1178.0cm
2
9.5mm
EPA-CN2515
15"
EPA-CN2515
52-88 ltr/1.9-3.1 cu. ft.
48-110 ltr/1.7-3.9 cu. ft.
15.32", 389.13mm
14.00", 355.60mm
Fitted As Standard
Fitted As Standard
.28", 7.11mm
14.56", 369.82mm
6.81", 172.97mm
5.70 lbs, 2.59 kg
Aluminum Voice Coil
Polyimide Former
Neo Magnet
Vented
Aluminum
Treated Paper
Sealed Cloth Edge
Treated Paper
15", 381mm
8 ohms
225W
39Hz
50Hz-3.7kHz
100
7 oz
.28", 6.99mm
2.5", 63.5mm
39Hz
5.3
1.08mH
10.08
.35
.34
260.34 ltr/9.19 cu. ft.
302.61cc
.25mm/N
15.7 T-M
66.5 grams
112
3.5mm
864.6cm
2
8.5mm
EPA-CN2512
EPA-CN2512
23-59 ltr/.8-2.1 cu. ft.
28-102 ltr/1.0-3.6 cu. ft.
12.38", 314.45mm
11.06", 280.92mm
Fitted As Standard
Fitted As Standard
.28", 7.11mm
11.62", 295.15mm
5.90", 149.86mm
5.10 lbs, 2.31 kg
Copper Voice Coil
Polyimide Former
Neo Magnet
Vented
Aluminum
Treated Paper
Sealed Cloth Edge
Treated Paper
12", 305mm
8 ohms
225W
49Hz
49Hz-3.5kHz
99.5
7 oz
.28", 6.99mm
2.5", 63.5mm
12"
49Hz
5.1
.55mH
9.29
.45
.43
93.51 ltr/3.30 cu. ft.
236.66cc
.24mm/N
12.4 T-M
43.6 grams
110
4.5mm
525.9cm
2
8.5mm
EPA-C3015LF
15"
EPA-C3015LF
Not Recommended
59-187 ltr/2.1-6.6 cu. ft.
15.32", 389.13mm
14.00", 355.60mm
Fitted As Standard
Fitted As Standard
.28", 7.11mm
14.56", 369.82mm
6.57", 166.88mm
24.80 lbs, 11.25 kg
Copper Voice Coil
Polyimide Former
Ferrite Magnet
Extended and Vented
Aluminum
Treated Paper
Sealed Cloth Edge
Treated Paper
15", 381mm
8 ohms
550W
35Hz
42Hz-2.4kHz
97
105 oz
.39", 9.91mm
3.0", 76.2mm
35Hz
6.9
1.66mH
13.52
.32
.31
251.85 ltr/8.89 cu. ft.
561.99cc
.24mm/N
20.1 T-M
86.7 grams
108
6.5mm
864.6cm
2
13.0mm
