R e c o m m e n d e d E n c l o s u r e s
Directed Part Number
27060
27065
Model Number
C2 122
C2 124
Fs (free-air resonance)
23.55
24.56
Vas (equivalent compliance, cu. ft.)
4.42
4.42
Vas (equivalent compliance, liters)
125.29
125.25
Qms (Q, mechanical)
6.85
6.71
Qes (Q, electrical)
0.40
0.41
Qts (total driver Q)
0.38
0.39
Re (DC resistance, ohms)
3.7
6.5
Z (nominal impedance, ohms)
4
8
Le (inductance, mh)
1.48
1.92
Efficiency (2.83v/1M, dB)
87.9
88.3
Xmax (one-way linear excursion, in.)
0.35
0.35
Xmax (one-way linear excursion, mm)
9
9
Power (continuous power handling)*
250 watts
250 watts
Peak power handling (music,)**
500 watts
500 watts
Mms (total moving mass, grams)
136
127
Cms (mechanical compliance, µM/N)
335
329
BI (motor strength, Tesla-M)
13.60
17.37
Sd (effective radiating area, sq. m.)
0.0515
0.0515
Sd (effective radiating area, sq. in.)
79.78
79.78
Frequency range (Hz)
25-2.5k
25-2.5k
Energy Bandwidth Product (EBP)
59
60
Typical Sealed Enclosure (cu. ft.)
0.75
0.75
SPL Sealed Enclosure (cu. ft.)**
0.5
0.5
Low Qtc Sealed Enclosure (cu. ft)*
1
1
Vented Enclosure (cu. ft.)***
1.2
1.0
Port Tuning Frequency (Hz)
40
40
Port Diameter (inside in.)
4
4
Equivalent Square Port (in.)
3.5 x 3.5
3.5 x 3.5
Port Length (in.)
20
19
S P E C I F I C AT I O N S
1. Parameters listed are for conventional applications only, for further help please call Tech Audio Support
*
For
SQ
(sound quality applications) amps should be between
2. Recommend enclosure are
NET Box Volumes,
speaker and port displacement are
NOT
calculated into the
Pe
and
Peak
power ratings.
volume of the enclosure, you will need to add these volumes to calculate
GROSS
volume for the enclosure.
**
SPL usage only! Not rated for continuous use at this level.
3. The approximate volume of air displaced by the port can be calculated by using the square port area (H x W)
***
Sub-sonic filters should always be used and adjusted specifically
times the port length and then divide by 1728 to get cubic feet.
for vented box designs.
4. Please call Technical Audio support for further specifications and information: 1-800-876-0800 ext. 2032
Specifications subject to change without notice
© 2005 Directed Electronics, Vista, CA.—all rights reserved
D r i v e r P h y s i c a l D i m e n s i o n
Speaker Displacement (cu. ft.)
0.08
0.08
Mounting hole diameter (in.)
11
11
Mounting depth (in.)
6
6
Basket diameter (in.)
12.4
12.4
