Eminence Alpha-8MRA American Standard Series 8" Midrange Sealed Back Speaker
Price$49
+ $29 Shipping
Listed:4 years ago
Views:277
Watchers:4
Offers:1
Northampton, MA, United States
Lightly used, in good working condition. Speaker has a small dent in the paper cone (see photo), but it's in excellent shape overall and works as it should.
From Eminence:
Recommended for pro audio and bass guitar applications as a midrange. Sealed basket makes this woofer independent of enclosure design.
SPECS:
• Nominal Basket Diameter: 8", 203 mm
• Nominal Impedance*: 8 Ω
• Power Rating*:
• Program Power: 250 W
• Watts: 125 W
• Resonance: 514 Hz
• Usable Frequency Range: 400 Hz - 4.8 kHz
• Sensitivity*: 100.9 dB
• Magnet Weight: 20 oz.
• Gap Height: 0.25", 6.4 mm
• Voice Coil Diameter: 1.5", 38 mm
THIELE & SMALL PARAMETERS:
• Resonant Frequency (fs): 514 Hz
• DC Resistance (Re): 7.32 Ω
• Coil Inductance (Le): 0.34m H
• Mechanical Q (Qms): 4.48
• Electromagnetic Q (Qes): 2.08
• Total Q (Qts): 1.42
• Compliance Equivalent Volume (Vas): 0.8 liters / 0.03 cu.ft.
• Peak Diaphragm Displacement Volume (Vd): 0 cc
• Mechanical Compliance of Suspension (Cms): 0.01 mm/N
• BL Product (BL): 8.9 T-M
• Diaphragm Mass Inc. Airload (MMs): 7 grams
• Efficiency Bandwidth Product (EBP): 247
• Maximum Linear Excursion (Xmax): 1.6 mm
• Surface Area of Cone (Sd): 205.9 cm2
• Maximum Mechanical Limit (Xlim): 3 mm
MOUNTING INFORMATION:
• Recommended Enclosure Volume:
• Sealed: N/a
• Vented: - liters / - cu.ft.
• Driver Volume Displaced: 0.02 cu.ft. / 0.58 liters
• Overall Diameter: 8.22", 208.8 mm
• Baffle Hole Diameter: 7.19", 182.6 mm
• Front Sealing Gasket: Yes
• Rear Sealing Gasket: Yes
• Mounting Holes Diameter: 0.22", 5.6mm
• Mounting Holes B.C.D.: 7.78", 197.6mm
• Depth: 3.25", 82.6 mm
• Net Weight: 4.4 lbs, 2 kg
• Shipping Weight: 5.1 lbs, 2.31 kgs
MATERIALS OF CONSTRUCTION:
• Coil Construction: Copper voice coil
• Coil Former: Polyimide former
• Magnet Composition: Ferrite magnet
• Core Details: Vented core
• Basket Materials: Pressed steel basket with closed back
• Cone Composition: Paper cone
• Cone Edge Composition: Paper cone edge
• Dust Cap Composition: Solid composition paper dust cap
* If you are placing an international order, please contact us prior to checkout to discuss shipping quotes.
From Eminence:
Recommended for pro audio and bass guitar applications as a midrange. Sealed basket makes this woofer independent of enclosure design.
SPECS:
• Nominal Basket Diameter: 8", 203 mm
• Nominal Impedance*: 8 Ω
• Power Rating*:
• Program Power: 250 W
• Watts: 125 W
• Resonance: 514 Hz
• Usable Frequency Range: 400 Hz - 4.8 kHz
• Sensitivity*: 100.9 dB
• Magnet Weight: 20 oz.
• Gap Height: 0.25", 6.4 mm
• Voice Coil Diameter: 1.5", 38 mm
THIELE & SMALL PARAMETERS:
• Resonant Frequency (fs): 514 Hz
• DC Resistance (Re): 7.32 Ω
• Coil Inductance (Le): 0.34m H
• Mechanical Q (Qms): 4.48
• Electromagnetic Q (Qes): 2.08
• Total Q (Qts): 1.42
• Compliance Equivalent Volume (Vas): 0.8 liters / 0.03 cu.ft.
• Peak Diaphragm Displacement Volume (Vd): 0 cc
• Mechanical Compliance of Suspension (Cms): 0.01 mm/N
• BL Product (BL): 8.9 T-M
• Diaphragm Mass Inc. Airload (MMs): 7 grams
• Efficiency Bandwidth Product (EBP): 247
• Maximum Linear Excursion (Xmax): 1.6 mm
• Surface Area of Cone (Sd): 205.9 cm2
• Maximum Mechanical Limit (Xlim): 3 mm
MOUNTING INFORMATION:
• Recommended Enclosure Volume:
• Sealed: N/a
• Vented: - liters / - cu.ft.
• Driver Volume Displaced: 0.02 cu.ft. / 0.58 liters
• Overall Diameter: 8.22", 208.8 mm
• Baffle Hole Diameter: 7.19", 182.6 mm
• Front Sealing Gasket: Yes
• Rear Sealing Gasket: Yes
• Mounting Holes Diameter: 0.22", 5.6mm
• Mounting Holes B.C.D.: 7.78", 197.6mm
• Depth: 3.25", 82.6 mm
• Net Weight: 4.4 lbs, 2 kg
• Shipping Weight: 5.1 lbs, 2.31 kgs
MATERIALS OF CONSTRUCTION:
• Coil Construction: Copper voice coil
• Coil Former: Polyimide former
• Magnet Composition: Ferrite magnet
• Core Details: Vented core
• Basket Materials: Pressed steel basket with closed back
• Cone Composition: Paper cone
• Cone Edge Composition: Paper cone edge
• Dust Cap Composition: Solid composition paper dust cap
* If you are placing an international order, please contact us prior to checkout to discuss shipping quotes.
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| Listed | 4 years ago |
| Condition | Very Good (Used) Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more |
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