» FM Transmission
The typical drive-in broadcasts the film soundtrack over low-power FM, but these transmitters were designed for re-broadcasting around the home or hobbyist and don't offer the sound quality that today's discerning movie-goer expects.
We supply class leading professional quality Eddystone Broadcast XE10 FM transmitter systems that can easily be adjusted from practically nothing, all the way to 10 watts from the front panel, this means we can turn the power up and down, enabling us to achieve exactly the right coverage for each site.
They broadcast through tuned ¼-wave ground plane antennas mounted to masts on the roofs of the projection buildings. Output of the transmitters is adjusted for a clean signal on the drive-in fields.
The digital sound systems work as follows: The sound is output from the projector often as a 5.1 LPCM bitstream or analogue to our professional digital mixer to allow for level control, EQ, compassion and automation that is essential for good quality sound. The signal then feeds the transmitter and antenna.
This results in sound that is equal in quality to the local FM commercial stations. Our transmitters have built-in audio processing minimising FM hum or background noise, and the frequency response is good out to around 15kHz. This represents a quantum leap over the sound is experienced with older more traditional transmitters.
As part of our trusted package we supply Deva SmartGen RDS encoders that will identify your Drive-In Cinema by name on the car radio's display and continuously transmit any promotional or sponsors advertising message to your audience.