Specification Sheet

Higher Data = 11-18-034 SPL AVG 1/6th
Lower Data = Curve Editor
Person:
Company:
Project:
File: 18 inch 4 ohm.lib
Nov 5, 2013
Tue 3:34 pm
4.6.0.371
May/29/2007
Note
sMap
45: Impero18C for cat 2014
20 Hz 50 100 200 500 1K 2K 5K 10K 20K
dBSPL
60
65
70
75
80
85
90
95
100
Ohm
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
SPL vs Freq
Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Watts
Music Program
Resonance
Usable Frequency Range
Sensitivity***
Magnet Weight
Gap Height
Voice Coil Diameter
Specification
MaterialS of conStruction
MountinG inforMation
Recommended Enclosure Volume
Sealed
Vented
Driver Volume Displaced
Overall Diameter
Baffle Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight
Fs
Re
Le
Qms
Qes
Qts
Vas
Vd
Cms
BL
Mms
EBP
Xmax
Sd
Xlim
tHiele & SMall paraMeterS
*
freQuencY reSponSe & iMpedance curve
*
High power driver recommended for pro
audio in vented enclosures. Suited for full-
range three-way boxes, bass guitar boxes,
and small subwoofers. 4 ohm.
IMPERO
™
18C
18.0”, 457 mm
4 Ω
1200 W
2400 W
31 Hz
36 Hz – 0.8 kHz
94.5 dB
109 oz.
.500”, 12.7 mm
4.0”, 102 mm
31 Hz
3.13 Ω
1.09 mH
10.13
0.35
0.34
11.20 cu.ft., 317.02 liters
942.7 cc
0.17 mm/N
16.10 T-M
148 grams
89
8.13 mm
1159.0 cm2
20.2 mm
N/A
118.93–339.80 liters,
4.20–12.00 cu.ft.
0.237 cu.ft., 6.70 liters
18.00’’, 457.2 mm
16.56’’, 420.6 mm
Yes
Yes
0.28’’, 7.1 mm
17.25’’, 438.2 mm
8.31”, 211.1 mm
27.30 lbs , 12.38 kg
30.80 lbs , 13.97 kg
Copper voice coil
Fiberglass former
Ferrite magnet
Bumped Vented Extended core
Die-cast aluminum basket
Water resistant paper cone
Treated cloth cone edge
Water resistant treated paper dust cap
Professional series
learn more at eminence.com