Specifications
| Gain | |||
|---|---|---|---|
| Normal operation, unit gain +0dB -1dB | |||
| Frequency Response | |||
| 20Hz-30kHz ±0.5dB | |||
| Distortion | |||
| Frequency 1kHz, output level +10dBU, better than 0.01% THD | |||
| Equivalent Input noise | |||
| Better than -90dBU din audio band | |||
| Inputs | |||
| Input impedance greater than 30K. Balanced bridging differential amplifier. Maximum input level +22dBU. | |||
| Outputs | |||
| Electronically balanced. Source impedance 100R. Maximum output level before clipping, into 600R load +22dBU. Optional transformers may be ordered to provide floating output. | |||
| For unbalanced operation one side of input or output may be strapped to ground without loss of level or deterioration in performance. (Unbalanced input impedance greater than 15K). | |||
| Controls | |||
| All situated behind removable security front panel. | |||
| 1 - priority input level into all channels. | |||
| 2 - priority input level into channels 3 & 4 (allows channels 3 & 4 to be lower level than 1 & 2) | |||
| 3 - Limit threshold | |||
| 4 - Attenuation channels 1 & 2 | |||
| 5 - Attenuation channels 3 & 4 | |||
| 6 - Reset button. Position determines type of reset | |||
| 7 - Manual test button. (Reset and test buttons may be operated through small holes in front by suitable object). | |||
| Priority Input | |||
| Selectable mic or line with internal switch, factory set to mic. | |||
| Mic priority input | low impedance, balanced. | ||
| Gain | 15dB-70dB | ||
| Line priority input | Impedance greater than 10K: maximum input +30dBU. | ||
| Priority input socket is connected directly to priority output socket until the unit is triggered by the control input or test button. Then the priority input is connected into all channels as set by level controls and disconnected from priority output socket. | |||
| Control Input | |||
| Control input voltage | 18V-24V AC or DC supplied as standard. | ||
| Option | Switched pair of contacts. Close to operate. Must be isolated. | ||
| Noise Limiter | |||
| Level sense taken from channels 1 & 2. | |||
| Threshold adjustable from -10dBU to +22dBU. | |||
| If warning LED is illuminated for 6 seconds continuously the limiter will be triggered. Limit attenuation is the same as set for priority override. Limit will be activated for 10 seconds and has a 10 second fade back time. | |||
| Attenuation | |||
| Attenuation adjustable, maximum -45dB. | |||
| Fade back time approximately 10 seconds. | |||
| Visual Indicators | |||
| Power | Green LED | ||
| Limit warning | amber LED | ||
| Limit | red LED | ||
| Priority override | red LED | ||
| Connectors | |||
| Channels 1 to 4 inputs & outputs | 3 pin XLR type audio connectors | ||
| Priority input & output | 3 pin XLR type audio connectors | ||
| Priority control input | 2 x 4mm binding posts | ||
| Remote indicators outputs | 5 pin 180° din connector | ||
| Pin 1 - Warning | |||
| Pin 2 - OVE | |||
| Pin 3 - Priority | |||
| Pin 4 - Limit | |||
| Pin 5 - NC | |||
| Remote indicators output will drive LEDs directly without series resistor or may be used via suitable solid state relay to drive mains voltage indicators. | |||
| Power | |||
| 200-240V AC (110V to order) | |||
| Mains fuse 250mA slow-blow | |||
| Captive mains lead | |||
| Finish | |||
| Front and Rear panels: | Black anodised aluminium with etched silver notation which will not rub off in use. | ||
| Case | Black plastic-coated steel. | ||
| Dimensions | |||
|---|---|---|---|
| 19" Rack mounting 1RU | Width 482mm (19") | Depth 200mm (7.9") | Height 44mm (1.75") |
Formula Sound reserve the right to alter specifications at any time without notice.