EDCOR Electronics Corporation
EA75 - 75W bidirectional audio distribution transformer.
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Design
The EA series audio distribution transformers are designed for the amplifier or the speaker side of a voltage speaker distribution system. Because they are bidirectional they can be used in either direction. This series are similar to the Altec and Electro Voice 15000* series audio transformers and meet or exceed their specifications.
Continuous Use Design
This series is designed to operate continuously.
Primary (Input)
The primary is designed for a 4 or 8 Ohms speaker.
Secondary (Output)
The secondary is designed for a 70V or 100V audio distribution line.
Magnet Wire
All units are wound with the finest virgin copper magnet wire. All windings use heavy insulated wire to provide excellent manufacturing yield, lower customer cost and superior life.
The Core
EDCOR uses the finest M6 line grain oriented steel cores. Each unit is hand stacked to assure at least 92% stack.
The Bobbin
Injection molded Nylon 6/6 with the addition of 30%-35% glass fibers. The addition of glass fibers allows a higher heat deflection temperature and it brings the material to a class HB UL temperature classification.
Termination
The terminations are UL1015 18 ga. color coded lead wire around 15 inches (38cm) long.
Mounting
This unit comes with zinc plated steel brackets for mounting with the use of four screws. See dimensional drawing.
Specifications
| Wattage | 75W |
| Primary (input) Impedance | 4 Ω or 8 Ω |
| Secondary (output) Distribution Voltage | 70V or 100V |
| Winding Configuration | Interleave Winding |
| Frequency Response | 35~20K Hz., <1dBu |
| THD+Noise | <0.1% @ 1K Hz. |
| Insertion Loss | <1 dB |
| Bobbin Material | Nylon 6/6 GF-30 |
| Flammability Rating | Class HB |
| Coil Finish Wrapping | Polyester Film Electrical Insulating Tape |
| Core Size |
EI125 (1.25" x 1.25") |
| Core Material | M-6 29 ga. grain oriented lamination steel |
| Secondary Insulation | Clear air dry polyester varnish |
| Termination | 15" (38cm) UL1015, 18 ga. lead wire |
| Mounting | Zinc plated steel brackets |
| Mounting Orientation | Horizontal |
| Weight | 4.13 lbs. |
| Compliance | RoHS & REACH |
| Dimensional Drawing | 15000-EI125-125-02A |