Model
Dayton Audio ULTIMAX UM18-22
Rating
DIAM
18"
FS(Hz)
19.5
VAS(l)
212
QTS
0.53
PWR(W)
2000
SPL(dB)
85.9
IMP(Ohm)
4x2
avb
UNK
Thiele-Small Parameters
Fs(Hz)
19.5
Vas(l)
212
Qts
0.53
Qms
3.82
Qes
0.615
Bl(Tm)
23.8
Mms(gr)
655
Cms(mm/N)
0.102
Rms(kg/s)
21.008
Le(mH)
0
Re(Ohm)
4.3
Sd(sq.mm)
121057
Vd(l)
2.663
X-max(mm)
22
X-mech(mm)
0
General Parameters
Diameter (inch)
18
Max Power(W.)
2000
RMS Power(W.)
1000
Number of Coils
2
Impedance Z-Nom(Ohm)
4
Reference efficiency η0(%)
0
Sensitivity(dB) 1-W
85.9
Sensitivity(dB) 2.8-V
0
Mounting Information
Speaker Displacement (l)
0
Total Diameter (mm)
0
Cutout Diameter (mm)
422
Mounting Depth (mm)
248
Magnet Diameter (mm)
190
Optimum Enclosures
Enclosures
Closed, BP4
