Sonifex SM44-PPM Station Master With Switching Talkback For 4 Studios, With PPM Meters - Used
£650.00 ex. vat
Sonifex SM44-PPM - Used
This used Sonifex SM44-PPM Station Master is part of the Sonifex range of professional audio products designed for building radio stations on a budget. It combines into a single package all the equipment required for audio distribution, studio switching, talkback and monitoring for up to 4 studios.
Discription for Sonifex SM24-PPM and Sonifex SM44-PPM each unit is subject to alter slightly from the discription and specifications.
Sonifex SM44-PPM Features
Station Master accepts stereo audio feeds from up to 4 studios, switching them individually to transmission using Offer and Accept operation. The output of the current on-air studio is distributed to the other studios via a dedicated bus, avoiding the need for multiple studio distribution links. The output of the Station Master is provided as a stereo pair and as a mono-feed of the stereo source. The studio switching is achieved using latching relays which retain their switch status if a power-failure occurs.
A profanity delay can be controlled by the Station Master allowing you to install just one delay unit that can be shared by your studios and used by the studio currently on-air.
The Station Master is fitted with a pair of true PPM meters, or VU meters, for monitoring up to 8 stereo sources. These sources consist of the connected studios and four external sources such as news feeds or off air receivers.
Station Master rear view imageThe audio can be monitored via headphones, or output to a power amplifier, or via the internal power amplifier, capable of driving 10W into 8Ω speakers. There are also two ¼” jack insert points on the front panel for using the Station Master to monitor from a jack-field.
Station Master distributes up to 4 incoming stereo signals to each of the connected studios without the need for external distribution amplifiers. These signals, such as off-air receivers, news feeds and outside broadcasts, can be professional balanced inputs or at domestic unbalanced line levels. The gain of the incoming stereo signals can be adjusted from the front panel. Distribution gain is controlled by a preset potentiometer.
The Station Master’s talkback system acts as the master station for talkback with 4 satellite systems. These can either be the connected studios or other locations such as a record library or engineering workshop. Individual satellites can talk to each other or broadcast to all stations.
To allow for logging of broadcasts the Station Master has a stereo balanced output for professional logging equipment, together with 3 sets of phono unbalanced outputs for connection to domestic VCR/DVD equipment.
In the event of a power failure to the Station Master, it will continue to route the current on-air studio to the stereo transmission output. Also, when power is re-applied, all switching, including the Offer and Accept switching, will re-initialise to the configuration when power was lost. This means that your on-air studio can continue transmitting, even if power to the Station Master has failed.
- Transmission Outputs: Balanced feed-through of transmission inputs via relay contacts
- Mono Output: <75Ω electronically balanced
- Stereo Line Inputs: >20kΩ electronically balanced
- Stereo Line Outputs: <75Ω electronically balanced
- Professional Logging Outputs: <75Ω electronically balanced
- Domestic Logging Outputs: 75Ω unbalanced
- Domestic Monitor Outputs: <75Ω unbalanced
- Monitor Speaker Outputs: 10 Watts into 8Ω
- Monitor Insert Input: >20kΩ electronically balanced
- Headphone Output: Drives 600Ω stereo headphones
- Talkback Mic Input: >1.5kΩ electronically balanced
- Talkback Line Inputs: >10kΩ unbalanced
- Switch Inputs: Momentary closure to common
- Lamp Outputs: Open Collector reference to common, Voltage for lamps is supplied