Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohm Per Coil - Manual

Last Revised: 12/7/2012 Note: All parameters are derived with voice coils
wired in series.
Note: All dimensions in mm.
UM12-22
UM1
2-22
12" Ultimax DVC Subwoofer 2 ohm Per Coil
1
2" Ultimax D
V
C Sub
w
oof
er 2 ohm P
er Coil
4
3.3
1.22
24.9
3.45
0.71
0.59
193.2
0.21
490.9
932.7
11.8
71.6
19
63.5
84.0
600
20 -
1,000
@ 1 kHz
(2+2)
50
45
40
35
30
25
20
15
10
5
0
180°
90°
0 deg
-90°
-180°
1 2 5 10 20 50 100 200 500 1kHz 2k 5k 10k 20k
70
80
90
dBSPL Ohm
60
50
40
30
20
10
0
-10
-20
10 Hz 20 50 100 200 500 1K 2K 5K 10K
200
100
50
20
10
5
2
1
20K
Dual 2 ohm, 2-layer voice coils
One-piece Nomex honeycomb covered
with woven glass-fiber cone
Tall-boy rubber surround for extra-long
linear excursion
Dual linear stiffness spiders limit distortion
and rocking modes
Large copper sleeve and cap reduce
distortion due to inductance variations
Black anodized aluminum former and
black pole improves heat dissipation
Large vented pole piece and under-spider
venting