Thiele-Small Parameters:
these vary from unit to unit and also according to
measurement technique, so don’t get too hung up on exactness of the numbers or box
design results. By the way, “pk-pk” means peak-to-peak.
Sensitivity (No):
This spec is omitted because it is for mid frequencies and misleading for
subwoofers.
Woofer Displacement Volume:
For standard drop in mounting, please subtract the
subwoofer’s displacement volume from the gross enclosure volume to calculate accurate net
enclosure volume.
Vance Dickason’s Loudspeaker Cookbook
contains tons of useful information and we
highly recommended it
SPECS AND DIMENSIONS
SPECS AND DIMENSIONS
Model:
Nominal Size
Outer Diameter (OD)
Inner Diameter (ID)
Mounting Depth (MD)
Woofer Displacement
Power Handling, RMS
Power Handling, Max
Magnet Size
Voice Coil Size / Material
Nominal Impedance (Z)
D.C.Resistance (Re)
Resonance Frequency (Fs)
Total Q (Qts)
Mechanical Q (Qms)
Electrical Q (Qes)
Stiffness (Vas)
Excursion (Xmax)
Cone Area (Sd)
C7 8D1
8"
8.66" / 220mm
7.28" / 185mm
5.5" / 140mm
.077ft
3
/ 2.18L
1000 Watts
2000 Watts
150 OZ
2.5" Aluminum | 4 Layer
48Hz
0.27
5.33
0.29
0.15ft
3
/ 4.2L
0.79" / 20mm pk-pk
29.3in
2
/ 189cm
2
C7 8D2
8"
8.66" / 220mm
7.28" / 185mm
5.5" / 140mm
.077ft
3
/ 2.18L
1000 Watts
2000 Watts
150 OZ
2.5" Aluminum | 4 Layer
49Hz
0.27
4.45
0.29
0.15ft
3
/ 4.2L
0.79" / 20mm pk-pk
29.3in
2
/ 189cm
2
C7 10D1
10"
10.5" / 267mm
9.29" / 236mm
7.48" / 190mm
.113ft
3
/ 3.21L
1200 Watts
2400 Watts
200 OZ
3" Aluminum | 4 Layer
39Hz
0.44
5.88
0.47
0.35ft
3
/ 10L
1.14" / 29mm pk-pk
51.1in
2
/ 330cm
2
C7 10D2
10"
10.5" / 267mm
9.29" / 236mm
7.48" / 190mm
.113ft
3
/ 3.21L
1200 Watts
2400 Watts
200 OZ
3" Aluminum | 4 Layer
40Hz
0.36
6.08
0.38
0.35ft
3
/ 10L
1.14" / 29mm pk-pk
51.1in
2
/ 330cm
2
Model:
Nominal Size
Outer Diameter (OD)
Inner Diameter (ID)
Mounting Depth (MD)
Woofer Displacement
Power Handling, RMS
Power Handling, Max
Magnet Size
Voice Coil Size / Material
Nominal Impedance (Z)
D.C.Resistance (Re)
Resonance Frequency (Fs)
Total Q (Qts)
Mechanical Q (Qms)
Electrical Q (Qes)
Stiffness (Vas)
Excursion (Xmax)
Cone Area (Sd)
C7 12D1
12"
12.6" / 320mm
11.1" / 282mm
8.2" / 208mm
.136ft
3
/ 3.85L
1200 Watts
2400 Watts
200 OZ
3" Aluminum | 4 Layer
35Hz
0.44
5.58
0.48
0.88ft
3
/ 25L
1.26" / 32mm pk-pk
77.4in
2
/ 499cm
2
C7 12D2
12"
12.6" / 320mm
11.1" / 282mm
8.2" / 208mm
.136ft
3
/ 3.85L
1200 Watts
2400 Watts
200 OZ
3" Aluminum | 4 Layer
36Hz
0.41
6.33
0.43
0.88ft
3
/ 25L
1.26" / 32mm pk-pk
77.4in
2
/ 499cm
2
C7 15D1
15"
15.6" / 395mm
14.1" / 358mm
9.6” / 244mm
.21ft
3
/ 5.96L
1200 Watts
2400 Watts
200 OZ
3" Aluminum | 4 Layer
31Hz
0.47
6.01
0.51
2.44ft
3
/ 69L
1.34" / 34mm pk-pk
126.2in
2
/ 814cm
2
C7 15D2
15"
15.6" / 395mm
14.1" / 358mm
9.6” / 244mm
.21ft
3
/ 5.96L
1200 Watts
2400 Watts
200 OZ
3" Aluminum | 4 Layer
32Hz
0.48
6.48
0.51
2.44ft
3
/ 69L
1.34" / 34mm pk-pk
126.2in
2
/ 814cm
2
Model:
Nominal Size
Outer Diameter (OD)
Inner Diameter (ID)
Mounting Depth (MD)
Woofer Displacement
Power Handling, RMS
Power Handling, Max
Magnet Size
Voice Coil Size / Material
C7 18D1
18"
18.5" / 470mm
16.73" / 425mm
10.5" / 267mm
.29ft
3
/ 8.2L
1200 Watts
2400 Watts
280 OZ
3" Aluminum | 4 Layer
C7 18D2
18"
18.5" / 470mm
16.73" / 425mm
10.5" / 267mm
.29ft
3
/ 8.2L
1200 Watts
2400 Watts
280 OZ
3" Aluminum | 4 Layer
Nominal Impedance (Z)
D.C.Resistance (Re)
Resonance Frequency (Fs)
Total Q (Qts)
Mechanical Q (Qms)
Electrical Q (Qes)
Stiffness (Vas)
Excursion (Xmax)
Cone Area (Sd)
29Hz
0.46
5.60
0.50
4.85ft
3
/ 137L
1.46" / 37mm pk-pk
184.2in
2
/ 1188.5cm
2
31Hz
0.46
6.52
0.49
4.85ft
3
/ 137L
1.46" / 37mm pk-pk
184.2in
2
/ 1188.5cm
2
