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Eminence Beta - 12" Speaker 250 W 4 Ohm

Item number: ADHEB12C

BETA- 12A Series Standard American

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
  • Nominal Basket Diameter 12", 304.8 mm
  • Nominal Impedance 4 ohms
  • Power Rating Watts 250 W / Music Program 500 W
  • Resonance 47 Hz
  • Usable Frequency Range 43 Hz - 3.8 kHz
  • Sensitivity 98
  • Magnet Weight 38 oz.
  • Gap Height 0.312", 7.92 mm
  • Voice Coil Diameter 2", 50.8 mm

THIELE & Small Parameters
  • Resonant Frequency (fs) 45.5 Hz
  • DC Resistance (Re) 3.47
  • Coil Inductance (Le) 0.75 mH
  • Mechanical Q (Qms) 9.57
  • Electromagnetic Q (Qes) 0.49
  • Total Q (Qts) 0.46
  • Compliance Equivalent Volume (Vas) 115.0 liters
  • Peak Diaphragm Displacement Volume (Vd) 128.0 cc
  • Mechanical Compliance of Suspension (Cms) 0.279 mm/N
  • BL Product (BL) 9.46 T-M
  • Diaphragm Mass inc. Airload (Mms) 43.9 grams
  • Efficiency Bandwidth Product (EBP) 93.4
  • Maximum Linear Excursion (Xmax) 2.37 mm
  • Surface Area of Cone (Sd) 538.9 cm²
  • Maximum Mechanical Limit (Xlim) 11 mm

MOUNTING Information
  • Recommended Enclosure Volume 
    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", 305.5 mm
  • Baffle Hole Diameter 10.95", 278.1 mm
  • Front Sealing Gasket standard fitted as standard
  • Rear Sealing Gasket standard fitted as standard
  • Mounting Holes Diameter 0.25", 6.4 mm
  • Mounting Holes B.C.D. 11.59", 294.3 mm
  • Depth 4.57", 116 mm

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

Category: Eminence


71,90 €

including 19% VAT., plus shipping (Paketversand)

Recommended retail price: 97,00 €
(You save 25.88%, that is 25,10 €)
Must be ordered. Ready for shipment in 2 days

Shipping time: 3 - 5 workdays



Description

Empfohlen als Tieftöner für professionelle Audioanwendungen und Bassgitarre (Bassreflex-Gehäuse). Auch als PA-Lautsprecher (geschlossene oder Bandpass-Gehäuse) geeignet.


  • Produktart: Lautsprecher-Chassis
  • Typ: PA
  • nominaler Durchmesser: 12 ", 304,8 mm
  • Schwingspule: 2 ", 50,8 mm
  • Gesamtdurchmesser: 305,5 mm
  • Lochkreisdurchmesser: 294,3 mm
  • Ausschnittdurchmesser: 278,1 mm
  • Durchmesser Befestigungslöcher: 6,4 mm
  • Tiefe: 116 mm
  • nominale Impedanz: 8 Ohm
  • nominale Belastbarkeit: 250 W
  • maximale Belastbarkeit: 500 W
  • Empfindlichkeit (1 W / 1 m): 98 dB
  • Frequenzgang: 43 - 3800 Hz
  • Material Schwingspule: Kupfer
  • Magnet: Ferrit
  • Magnetspalt-Tiefe: 7,92 mm

Thiele & Small Parameter

  • Fs (Resonanzfrequenz): 47 Hz
  • Re (Gleichstromwiderstand): 5 Ohm
  • Qms (Mechanische Güte): 6
  • Le (Induktivität der Schwingspule): 0,64 mH
  • Qes (Elektrische Güte): 0,5
  • Qts (Gesamtgüte): 0,46
  • Vas (Ã?quavilentvolumen): 120,1
  • Mms (Bewegte Masse): 40 g
  • BL (Kraftfaktor): 10,8 Tesla/meter
  • Xmax (Maximale Auslenkung): 4,4 mm
  • Cms (Nachgiebigkeit der Aufhängung): 0,29 mm/N
  • Sd (Membranfläche): 538,9 cm²
  • Gewicht: 4,4 kg

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