Model #57RFT-8A
Product Specifications & Parameters
Primary Specifications
| | |
|---|
| Speakers Environment | Outdoor | |
| ROHS Compliant | No | |
Technical Specifications
| | UNIT of MEASURE |
|---|
| Nominal Basket Diameter |
2.2 / 57.0 |
inch / mm |
| Rated Impedance | 8 | ohms |
| Rated Power | 4 | Watts |
| Program Power | 8 | Watts |
| Frequency Range | 1250 - 13,000 | Hz |
Sensitivity
(2.83 V input measured at 1 Meter) | 106 | dB SPL |
| Voice Coil Diameter | 0.6 / 15.2 | inch / mm |
| Magnet Weight | 0.7 / 20 | oz / gr |
Small Signal Parameters
| | UNIT of MEASURE |
|---|
| Resonant Frequency (fo) | 1300 | Hz |
| D.C. Resistance (Re) | 6.8 | ohms |
| Mechanical Q (Qms) | 23.2 | |
| Electrical Q (Qes) | 16.3 | |
| Total Q (Qts) | 9.58 | |
| Compliance Equivalent Volume (Vas) | | ltr |
| BL Product (BL) | | T-M |
| Maximum Linear Excursion (Xmax) | | mm |
| Surface Area of Cone (Sd) | | cm2 |
Material Descriptions
| |
|---|
| Basket | Stamped Steel |
| Terminal Size | 0.110 X 0.02 |
| Magnet | Ferrite |
| Voice Coil Wire | Copper |
| Voice Coil Form | Paper |
| Cone | black phenolic treated cloth |
| Cone Edge | Pre-treated Black Cloth |
| Dust Cap | Mylar |
Sensitivity / Frequency
Drawing
| ID | Description | Measurements | Tolerance |
|---|
| OD | Outside Diameter | 2.3 in. | +/- 0.020” |
| CD | Cutout Diameter | 2.0 in. | +/- 0.020” |
| MG | Magnet Diameter | 1.4 in. | +/- 0.050” |
| HD | Hole Diameter | | +/- 0.010” |
| MD | Mounting Diameter | | +/- 0.010” |
| ID | Internal Depth | 0.9 in. | +/- 0.025” |
| FT | Flange Thickness | 0.1 in. | +/- 0.050” |
| NW | Net Weight | 80.0 g |
© 2005-2012. Misco Speaker Company. All rights reserved.
