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Directed Part Number

27202

27207

27212

27217

Model Number

HP10D2

HP10D4

HP12D2

HP12D4

Fs (free-air resonance)

31.42

33.14

29.46

27.75

Vas (equivalent compliance, cu. ft.)

0.62

0.56

1.79

1.78

Vas (equivalent compliance, liters)

17.42

18

50.72

50.44

Qms (Q, mechanical)

5.57

5.31

5.24

4.99

Qes (Q, electrical)

0.59

0.63

0.58

0.63

Qts (total driver Q)

0.53

0.57

0.52

0.56

Re (DC resistance, ohms)

3.8

6.85

3.8

6.8

Z (nominal impedance, ohms)

4

8

4

8

Le (inductance, mh)

2.01

2.79

2.01

2.85

Efficiency (2.83v/1M, dB)

84.79

82.72

87.25

84.94

Xmax (one-way linear excursion, in.)

0.55

0.55

0.55

0.55

Xmax (one-way linear excursion, mm)

14

14

14

14

Power (continuous power handling)*

500 watts

500 watts 

500 watts

500 watts

Peak power handling (music,)**

1000 watts

1000 watts

1000 watts

1000 watts

Mms (total moving mass, grams)

205

182

247

226

Cms (mechanical compliance, µM/N)

125

127

147

146

BI (motor strength, Tesla-M)

16.22

20.1

16.43

20.59

Sd (effective radiating area, sq. m.)

0.033

0.033

0.050

0.050

Sd (effective radiating area, sq. in.)

51.15

51.15

77.5

77.5

Frequency range (Hz)

40-2.5k

40-2.5k

30-2.5k

30-2.5k

Energy Bandwidth Product (EBP)

53

53

46

44

Typical Sealed Enclosure (cu. ft.)

0.55

0.65

1.25

1.35

SPL Sealed Enclosure (cu. ft.)**

0.35

0.35

0.65

0.55

Low Qtc Sealed Enclosure (cu. ft)*

0.65

0.65

2.05

2.15

Vented Enclosure (cu. ft.)***

0.95

0.95

1.35

1.45

Port Tuning Frequency (Hz)

44

44

40

40

Port Diameter (inside in.)

3

3

4

4

Equivalent Square Port (in.)

2.65 x 2.65

2.65 x 2.65

3.54 x 3.54

3.54 x 3.54

Port Length (in.)

8

8

12.5

11.5

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.)

0.077

0.077

0.096

0.096

Mounting hole diameter (in.)

9

9

11

11

Mounting depth (in.)

6.5

6.5

7

7

Basket diameter (in.)

10.25

10.25

12.35

12.35

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