ALPHA-8MRA 8" American Standard Series Speaker
Recommended for pro audio and bass guitar applications as a midrange. Sealed basket makes this woofer independent of enclosure design.
Applications
Midrange | Pro Audio | Bass Guitar
Box Type: Horn Loading
Specifications
Download Spec Sheet Download Cab Design| SPECIFICATION | |
| 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 |
Frequency Response
Shipping calculated at checkout.
ALPHA-8MRA 8" American Standard Series Speaker
Product Details
Characteristics
Filter series
Specifications
Nominal basket diameter
Nominal impedance
Power rating program power
Power rating watts
Resonance
Usable frequency range
Sensitivity
Gap height
Voice coil diameter
Thiele & Small Parameters
Resonant frequency fs
Dc resistance re
Coil inductance le
Mechanical q qms
Electromagnetic q qes
Total q qts
Compliance equivalent volume vas
Peak diaphragm displacement volume vd
Mechanical compliance of suspension cms
Bl product bl
Diaphragm mass inc airload mms
Efficiency bandwidth product ebp
Maximum linear excursion xmax
Surface area of cone sd
Mounting Information
Driver volume displaced
Overall diameter
Baffle hole diameter
Front sealing gasket
Rear sealing gasket
Mounting holes diameter
Mounting holes b c d
Depth
Net weight
Shipping weight
Materials of Construction
Coil construction
Voice coil former
Magnet material
Basket material
Cone composition
Surround
Dust cap composition
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