W 300 - 8 Ohm

Art. No. 9069

30 cm (12") woofer with air-dried cone and pressure vented pole piece. Can be fitted at front or rear. Excellent value for money coupled with very good power-handling capabilities. Particularly suitable as a replacement for HiFi speakers. Recommended cabinets: Volume/Principle BR-Channel fb fc/QTC 70 l/closed - - 56 Hz/0,8 100 l/closed - - 49 Hz/0,71 150 l/closed - - 43 Hz/0,62 70 l/bass reflex BR 25.50 (length 7 cm) 36 Hz - 100 l/bass reflex BR 25.50 (length 20 cm) 32 Hz - 150 l/bass reflex 2 x BR 15.34 (length 7 cm) 29 Hz -

Technical Data

Sketch

Recommended cabinets

Amplitude & Impedance Frequency

Rated power	120 W
Maximum power	180 W
Nominal impedance Z	8 Ohm
Frequency response	fu–2500 Hz
(fu: Lower cut-off frequency depending on cabinet)	.
Mean sound pressure level	91 dB (1 W/1 m)
Excursion limit	+/−14 mm
Resonance frequency fs	32 Hz
Magnetic induction	0.95 T
Magnetic flux	1250 µWb
Height of front pole-plate	8 mm
Voice coil diameter	50 mm
Height of winding	18.5 mm
Cutout diameter	280 mm
Net weight	2.8 kg
D.C. resistance Rdc	6.6 Ohm
Mechanical Q factor Qms	2.68
Electrical Q factor Qes	0.54
Total Q factor Qts	0.45
Equivalent volume Vas	190 l
Effective piston area Sd	490 cm²
Dynamically moved mass Mms	43 g
Force factor Bxl	9.4 Tm
Inductance of the voice coil L	1.8 mH
Connections	4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)

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Recommended cabinets

Volume/Principle	BR-Channel	fb	fc/QTC
70 l/closed	-	-	62 Hz/0,87
100 l/closed	-	-	55 Hz/0,77
150 l/closed	-	-	48 Hz/0,68
70 l/bass reflex	BR 25.50(length 7 cm)	36 Hz	-
100 l/bass reflex	BR 25.50 (length 20 cm)	32 Hz	-
150 l/bass reflex	2 x BR 15.34(length 7 cm)	29 Hz	-

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