Specification

12S320 Specification

Application		Compact 2- or 3-way
Nominal Impendance:	Ohm	8
Power handling AES noise:	W	500
Sensitivity (1 W / 1 m):	dB	98
Frequency response:	Hz	45 – 2500
Voice Coil Diameter:	mm	77 (3″)
Voice Coil Material:		Cu
Voice Coil Winding Depth:	mm	19
Magnet Gap Depth:	mm	10
Basket:		Cast Aluminum
Effect. diaphragm diameter D	mm	260

Recommended reflex enclosure:
10 L / 77 Hz, -3 dB = 103 Hz, BRD = 70 mm / 132 mm long
25 L / 63 Hz, -3 dB = 68 Hz, BRD = 90 mm / 106 mm long

Thiele-Small

12S320 Thiele-Small Parameters

Resonance Frequency:	Fs	Hz	45.4
DC Resistance:	Re	Ohm	5.7
Mechanical Q Factor:	Qms		4.2
Electrical Q Factor:	Qes		0.21
Total Quality Factor:	Qts		0.2
Equivalent Volume:	Vas	L	69.5
Moving Mass:	Mms	kg	0.069
Mechanical Complience:	Cms	mm / N	0.176
BL Factor:	BL	Tesla m	23.3
Effective Piston Area:	Sd	m²	0.0531
Max. linear Excursion:	Xmax	mm	+/- 4.5
Voice Coil Inductance:	Le1k	mH	0.75
	Le10k	mH	0.46

Mounting & Drawing

12S320 Drawing

12S320 Mounting Information

Overall Diameter:	mm	318
Mounting Holes Diameter:	mm	8 x (7 x 8)
Bolt Circle Diameter:	mm	300
Baffle cut-out Diameter:	mm	284
Overall depth:	mm	149
Net Weight:	kg	8.1

Curves

12S320 Curves

Frequency Response measured 100 W (28.3 V)
at 1 m in a closed enclosure of 50 litre in an anechoic chamber incl. 2nd and 3rd harmonic distortion raised 20 dB.