WPI-450
The WPI – 450 loop amplifier is designed for church facilities or conference rooms with an area of up to 800 m². It transmits an acoustic signal through a special loop made of a wire (wire) with a cross-section of 1 – 2.5 mm². The signal is received from the loop via a wireless OPI receiver connected to headphones or to hearing aids of the hard of hearing. Any number of OPI wireless receivers can be used in one system.
| Technical data | WPI – 450 | OPI |
|---|---|---|
| Audio inputs (XLR) | 2 x mic., 1 x mic./line | – |
| Maximum loop area | 450 m² – 800 m² | – |
| Loop impedance | 0.5Ω – 3Ω | – |
| Loop current [RMS] | 4 A | – |
| Phantom Power | 12V | – |
| Sensitivity of inputs | – 50 dB mic., – 10 dB line | – |
| Frequency response | 40 – 20 000 Hz | 18 – 20 000 Hz |
| Nonlinear distortions THD + N | < 0,25% | < 0,25% |
| Maximum power consumption | 300 VA | – |
| Power supply | 230V~, 50 Hz | 2 x 1.5V (AA) |
| Dimensions width/height/depth (mm) | 443x50x205 | 62x21x100 |
| Weight (kg) | 4,1 | 0,08 |