Eminence Speaker BETA12A manual BETA-12A-2, American Standard Series, SPL vs Freq, otes

AMERICAN STANDARD SERIES

BETA-12A-2

Recommended for professional audio and bass guitar applications as a woofer in a vented enclosure. Also works well for PA in a sealed or bandpass enclosure.

Specification			THIELE & SMALL PARAMETERS*		MOUNTING INFORMATION
Nominal Basket Diameter		12.0”, 305 mm	Fs	47 Hz	Recommended Enclosure Volume
						25.50–35.40 liters,
Nominal Impedance*		8 Ω	Re	5.00 Ω	Sealed
						0.90–1.25 cu.ft.
Power Rating**			Le	0.64 mH
Watts		250 W	Qms	6.00	Vented	36.80–139.00 liters,
						1.30–4.90 cu.ft.
	Music Program	500 W	Qes	0.50
Resonance		47 Hz	Qts	0.46	Driver Volume Displaced	0.071 cu.ft., 2.00 liters
Usable Frequency Range		43 Hz – 3.8 kHz	Vas	4.24 cu.ft., 120.10 liters	Overall Diameter	12.03’’, 305.6 mm
Sensitivity***		98.0 dB	Vd	237.0 cc	Baffle Hole Diameter	11.07’’, 281.2 mm
Magnet Weight		38 oz.	Cms	0.29 mm/N	Front Sealing Gasket	Yes
Gap Height		.312”, 7.9 mm	BL	10.80 T-M	Rear Sealing Gasket	Yes
Voice Coil Diameter		2.0”, 51 mm	Mms	40 grams	Mounting Holes Diameter	0.25’’, 6.4 mm
			EBP	94	Mounting Holes B.C.D.	11.59’’, 294.4 mm
			Xmax	4.40 mm	Depth	4.57”, 116.1 mm
			Sd	538.9 cm2	Net Weight	7.50 lbs , 3.40 kg
			Xlim	11.0 mm	Shipping Weight	9.70 lbs , 4.40 kg

Materials of Construction

Copper voice coil

Polyimide former

Ferrite magnet

Vented and extended core

Pressed steel basket

Paper cone

Cloth cone edge

Solid composition paper dust cap

learn more at eminence.com

	FREQUENCY RESPONSE & impedance curve*
	105 dBSPL				SPL vs Freq					Ohm90
										80
										70
	100									60
										50
	95
										40
	90									30
	85									20
	80
	75									10
										9
										8
	70									7
										6
	65	50	100	200	500	1K	2K	5K	10K	5
Map	20 Hz									20K
	41: Beta-12A-2 SPLZ

otes