4070
12” Coaxial Bass Midrange Driver
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| 4070 |
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TYPICAL CHARACTERISTICS |
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Rated impedance | Z | 8 | Ω |
Reference efficiency (1 W@1 m) | - | 97 | dB SPL |
Usable frequency range 1 | - | Hz | |
Power handling capacity 2 (AES) | - | 400 | W |
Max Sound Pressure Level 3 | SPLmax | 119 | dB SPL |
Min. impedance modulus | Zmin | 6.5 @ 270Hz | Ω |
Le1k | 1.07 | mH | |
@ 10 kHz | Le10k | 0.51 | mH |
Bl product | Bl | 20.6 | N/A |
Moving mass | Mms | 0.057 | Kg |
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Resonance frequency 5 | Fs | 47 (±6) | Hz |
DC resistance 6 | Re | 5.5 (±0.6) | Ω |
Mechanical quality factor | Qms | 3.5 | 1 |
Electrical quality factor | Qes | 0.22 | 1 |
Total quality factor | Qts | 0.21 | 1 |
Mechanical suspension compliance | Cms | 205 | |
Effective piston area | Sd | 0.049 | m2 |
Equivalent Cas air load | Vas | 0.068 | m3 |
Max. linear excursion | Xmax | ± 5.5 | mm |
Linear displacement volume | Vd | 0.270 | |
| 3.1 | % | |
Unity load volume | Vas Qts2 | 2.9 | |
ABSOLUTE MAXIMUM RATINGS |
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Short term max. input voltage 7 | Vmax | 115 | V |
Max. excursion before damage | Xdam | 12 | mm |
Ambient operating temperature |
| °C | |
Storage temperature 8 |
| °C | |
Environmental conditions 9 |
| Outdoor |
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APPLICATION INFORMATION |
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Air volume occupied by the driver 10 |
| 2.6 | |
Speaker net mass |
| 8.7 | Kg |
Recommended reflex box | Vb/Fb | 50 / 53 | L / Hz |
Electrical polarity | A positive voltage applied on the red |
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| terminal produces forward cone motion. |
PHYSICAL CHARACTERISTICS
max326.5 | angles)(on | 8 x Ø 6.5 Holes eq. spaced | |
on Ø 300 and on Ø 308 | |||
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Ø |
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| 170 |
| dot | Ø 25.4 |
| Red | |
+ |
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2 x screw button |
| 76.2 |
terminals |
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13 |
| Ø 307 max. |
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128.5 max.
Ø204 max.
Ø281.5 max.
SPECIFICATION NOTES
Note 1 : Allowing for energy response, excursion capability, Power spectrum, and
Note 2 : Established at 20°C ambient temp, according to
Note 3 : Established at 1m on axis of the loudspeaker mounted
in test enclosure, when driven at full AES Power Handling Capacity, including 4dB of thermal compression loss.
Note 4 : Measured at 20 mA in free air.
Note 5 : Measured at 20 mA and 20°C ambient temp. in free air conditions, after full run and rest.
Note 6 : Measured at 20°C ambient temp.
QC limits are ±10%
Note 7 : Stated in RMS voltage according to IEC
Note 8 : Includes shipping conditions. The lower limit prevents from demagnetization.
Note 9: Our products are classified in three categories : Indoor, Outdoor, and Outdoor✚ for permanent outdoor use or severe conditions.
Note 10 : Calculated for front mounting on to a 18 mm thick board.
461, rue des chênes ■ Z.A 77590 CHARTRETTES FRANCE
Tél : 33 01 64 81 29 80
Fax : 33 01 60 69 10 28
http: //www.phlaudio.com
PHL Audio S.A. provides these specifications as representative of current production after conditioning. Because of our continuous research, they are subject to change without notice.