PHL Audio B20 8 20 cm Bass Midrange Driver, 2420, Fax 33 01 60 69 10 e-mail phlaudio@phlaudio.com

2420

8￿ ■ 20 cm Bass Midrange Driver

		2420
TYPICAL CHARACTERISTICS
Rated impedance	Z	8			Ω
Reference efficiency (1 W@1 m)	-	94			dB SPL
Usable frequency range 1	-	70-3000			Hz
Power handling capacity 2	(AES)	200			W
Max Sound Pressure Level 3	SPLmax	113			dB SPL
Min. impedance modulus	Zmin	5.6 @ 370Hz			Ω
Voice-coil inductance 4 @ 1 kHz	Le1k	0.85			mH
@ 10 kHz	Le10k	0.46			mH
Bl product	BL	12.9			N/A
Moving mass	Mms	0.025			Kg
THIELE-SMALL PARAMETERS : TYPICAL (QC LIMITS)
Resonance frequency 5	Fs	72(±10)			Hz
DC resistance 6	Re	5.4 (±0.6)			Ω
Mechanical quality factor	Qms	4.5			1
Electrical quality factor	Qes	0.37			1
Total quality factor	Qts	0.34			1
Mechanical suspension compliance	Cms	200			10 -6m/N
Effective piston area	Sd	0.0219			m 2
Equivalent Cas air load	Vas	0.0130			m 3
Max. linear excursion	Xmax	±5.0			mm
Linear displacement volume	Vd	0.110			10 -3m 3
Half-space efficiency		1.3			%
Unity load volume	Vas Qts2	1.5			10 -3m 3
ABSOLUTE MAXIMUM RATINGS
Short term max. input voltage 7	Vmax	80			V
Max. excursion before damage	Xdam	±10			mm
Ambient operating temperature		–10	to	+50	°C
Storage temperature 8		–20	to	+70	°C
Environmental conditions 9		Outdoor
APPLICATION INFORMATION
Air volume occupied by the driver 10		0.720			10 -3m 3
Speaker net mass		3.020			Kg
Recommended reflex box	Vb/Fb	15 / 70			L / Hz
Electrical polarity	A positive voltage applied on the red terminal
	produces forward cone motion.

SPECIFICATION NOTES

Note 1 : Allowing for energy response, excursion capability, Power spectrum, and -3dB low freq. roll-off for standard reflex tuning.

Note 2 : Established at 20°C ambient temp, according to AES2-1984 standard using IEC268-1 simulated programme signal and a 15 liter Bass-Reflex test enclosure tuned at 70Hz.

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 268-5.

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

e-mail : phlaudio@phlaudio.com

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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.