SRM On-Air mixing console
Esta compacta y configurable mesa de mezclas On-Air está diseñada para las pequeñas estaciones de radio comunitarias y radios locales, SRM es la definitiva mesa de mezclas que permite estar en las ondas con el mínimo coste y tiempo. Se trata de un completo centro de control fácil de operar, de alta calidad para la radiodifusión. Diseñado directamente para trabajar con equipos semi-pro o domésticos, el SRM ofrece casi todas las facilidades y funciones automáticas que se encuentran en equipos más grandes pero a un precio más competitivo. El SRM se suministra en varios tamaños y se puede configurar con diferentes módulos.
- MAIN OUT: Main outputs are transformer balanced signals on XLR's for driving the transmitter or studio transmitter link without any problems with interfacing.
- TAPE OUT: The same signals unbalanced on PHONO connectors for the RECORD inputs of recording equipment.
- METER: Main out is permanent displayed on the internal LED PPM, a stereo 19 segment meter with DIN standard ballistics and a range of -40 to +3dB with reference to the nominal +6 dBu output level.
- LIMITER: An internal limiter guards the output level in a unique and practice oriented way: the output level is measured and compared to a reference. If the output exceeds this threshold, a control voltage is generated and applied to all channel VCA's resulting in a gain reduction. This means that all postfader signals, like foldback, telephone sends etc. are also held under control. The limiter action is displayed by a LED in the meter area.
- CONTROLROOM MONITOR: Four circuits are available: CR loudspeakers, CR headphones, external meter and CUE loudspeaker.
- CR LOUDSPEAKERS: To be selected to desk output or to an OFF AIR receiver for a check of the entire transmission path. Can be set to automatic change over to the CUE system. Automatic MUTE on opening of a control room microphone channel and DIM on using the talkback facilities.
- CR HEADPHONES: Reproducing the same signals as the loudspeakers without influence from MUTE- and DIM functions.
- EXTERNAL METER: Connections for a second meter, wired to the control room monitoring, that can be used for pre-set or checking an input channel via the CUE system.
- CUE LOUDSPEAKER: An output for a small speaker, wired to the CUE signals with DIM and MUTE action. This speaker can be mounted in the optional meter bridge or you can use a stand alone active speaker.
- SIGNALIZATION: An opto-isolated output tor driving RED LIGHTS via a suitable interface (e.g. EA862 red-light relays unit) on opening of one or more CR microphones.
- STUDIOMONITOR: Two circuits, one for studio loudspeakers and one for presenters headphones. Can be used with EA853 studio interface.
- STUDIO LOUDSPEAKER: Reproduction of all post fader signals, except those from studio microphones to prevent feedback. Can be dimmed and overridden with talkback, unless a studio microphone is opened.
- STUDIO HEADPHONES: To be used by a presenter hearing a main mix. Talkback is always possible. The talkback source is jumper selectable and can be the internal microphone with limiter or a prefade output from a control room microphone.
- SIGNALIZATION: An opto isolated output for driving RED LIGHTS in the studio to indicate open microphones there.
- Voltages in dBu are referred to 0 dBu = 0.775 V
- Fader position is at the 0 mark
- Balanced outputs are loaded with 600 Ohms
- External sources have an impedance of 200 Ohms
- Noise measurements are unweighted RMS, 22 Hz to 22 kHz
- Signal to noise ratio's are referred to + 6 dBu
FREQUENCY RESPONSE: 20 Hz - 20 kHz (0, -1dB)
HEADROOM: > 20 dB
CROSSTALK:
- stereo channels & - 60 dB
- mono channels & - 70 dB
- fader cut off & - 100 dB
SIGNAL TO NOISE:
- AII faders closed - 86 dB
- One channel unity gain - 80 dB
- Equivalent input noise microphone channel - 126 dBu
DISTORTION: Mic.- or line input with nominal output & 0.03%
INPUTS | min. gain | max. gain | Impedance |
Microphone | 28 dB | 78 dB | 1700 Ohm |
Line | 0 dB | 21 dB | 90 kOhm |
Telephone | 0 dB | 21 dB | 600 Ohm |
OUTPUTS | nom. level | max. level | Impedance |
Balanced outputs | +6 dBu | +21 dBu | 40 Ohm |
Unbalanced o/p | +6 dBu | +21 dBu | 50 Ohm |
Telephone send | -4 dBu | +10 dBu | 600 Ohm |
LIMITER:
- Threshold (fixed) + 6 dBu
- Attack time 10 mSec
- Release time (program dependant) 0.3 to 3 Sec
- Ratio (program dependant) > 40 : 1