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Eminence BETA-12A-2: 12 inch Woofer

Price: $79.99 $69.99

*Good replacement for Yamaha 12″ JAY51200 (121630C) woofers.
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.
250 watts / 43-3.8kHz / 2″ voice coil
8 ohms

Description

BETA-12A-2

*Good replacement for Yamaha 12″ JAY51200 (121630C) woofers. 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.

Click Here to Download PDF Spec Sheet

Click Here to Download PDF Cabinet Design

Specs:

Nominal Basket Diameter 12″, 304.8mm

Nominal Impedance* 8 ohms

Power Rating Watts 250W

Music Program 500W

Resonance 47Hz

Usable Frequency Range 43Hz-3.8kHz

Sensitivity*** 98

Magnet Weight 38 oz.

Gap Height 0.312″, 7.92mm

Voice Coil Diameter 2″, 50.8mm

Thiele & Small Parameters:

Resonant Frequency (fs) 47Hz

DC Resistance (Re) 5.0

Coil Inductance (Le) 0.64mH

Mechanical Q (Qms) 6.00

Electromagnetic Q (Qes) 0.50

Total Q (Qts) 0.46

Compliance Equivalent Volume (Vas) 120.1 liters / 4.2 cu.ft.

Peak Diaphragm Displacement Volume (Vd) 237cc

Mechanical Compliance of Suspension (Cms) 0.29mm/N

BL Product (BL) 10.8 T-M Diaphram Mass inc.

Airload (Mms) 40 grams

Efficiency Bandwidth Product (EBP) 94

Maximum Linear Excursion (Xmax) 4.4mm

Surface Area of Cone (Sd) 538.9 cm2

Maximum Mechanical Limit (Xlim) 11mm

Mounting Information:

Recommended Enclosure

Sealed 25.5-35.4 liters, 0.9-1.25 cu.ft.

Vented 36.8-139 liters/1.3-4.9 cu.ft.

Overall Diameter 12.03″, 305.5mm

Baffle Hole Diameter 10.95″, 278.1mm

Front Sealing Gasket Fitted as standard

Rear Sealing Gasket Fitted as standard

Mounting Holes Diameter 0.25″, 6.4mm

Mounting Holes B.C. D. 11.59″, 294.3mm

Depth 4.57″, 116mm

Net Weight 7.5 lbs., 3.4 kg

Shipping Weight 9.7 lbs., 4.4 kg

Materials of Construction:

Coil Construction Copper voice coil

Coil Former Polyimide former

Magnet Composition Ferrite magnet

Core Details Vented and extended core

Basket Materials Pressed steel basket

Cone Composition Paper Cone

Cone Edge Composition Cloth cone edge

Dustcap Composition Solid composition paper dust cap