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Eminence Delta Pro-8A 8" Midrange 8 Ohm

Brand:|Model: Delta Pro-8A|Part # 290-507

Eminence's Eminence Delta Pro-8A 8" speaker features a large 59 oz. ferrite magnet and thermally efficient cast aluminum basket, making it a top choice for pro audio loudspeakers, including line arrays.
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List Price$104.99
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Part # 290-507
  • Massive 59 oz. ceramic ferrite magnet
  • Die-cast aluminum basket
  • High power handling and efficiency

Product Details

Eminence Delta Pro-8A 8" Midrange 8 Ohm

The Eminence Delta Pro-8A 8" Midrange/Midbass driver is optimized for professional audio or MI (musical instrument) speaker system applications. Its truncated cast aluminum basket is great for stacking in a line array. The heat sink-style fins between the frame and magnet provide critical cooling to the voice coil, thereby reducing power compression and increasing wattage capacity.

Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)225 Watts
  • Power Handling (max)450 Watts
  • Impedance8 ohms
  • Frequency Response100 to 3,000 Hz
  • Sensitivity97.8 dB 1W/1m
  • Voice Coil Diameter2"
  • Magnet Weight59 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)69 Hz
  • DC Resistance (Re)5.6=40 ohms
  • Voice Coil Inductance (Le)0.82 mH
  • Mechanical Q (Qms)6.43
  • Electromagnetic Q (Qes)0.22
  • Total Q (Qts)0.22
  • Compliance Equivalent Volume (Vas)0.65 ft.³
  • Mechanical Compliance of Suspension (Cms)0.28 mm/N
  • BL Product (BL)14.1 Tm
  • Diaphragm Mass Inc. Airload (Mms)19g
  • Maximum Linear Excursion (Xmax)3 mm
  • Surface Area of Cone (Sd)218.2 cm²
Materials of Construction
  • Cone MaterialPaper
  • Surround MaterialCloth
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter8.02"
  • Baffle Cutout Diameter7.36"
  • Depth3.75"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.04 ft.³
  • Sealed F3268 Hz
  • Vented Volume0.09 ft.³
  • Vented F3176 Hz
Eminence Delta Pro-8A 8" Midrange 8 Ohm
  • BrandEminence Speaker
  • ModelDelta Pro-8A
  • Part Number290-507
  • UPC876358001613
  • Product CategoryPro Woofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Product Rating
    (3 Reviews)
  • Weight11 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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