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    Tecpro LS372 Loudspeaker Station Dual Circuit

    SKU
    tec 27-372
    -
    TecPro
    £504.00 £420.00
    Overview

    Series 2 Tecpro LS300 Loudspeaker Stations provide local monitoring of intercom circuits without the need to wear headphones. The built-in microphone makes them suitable for hands-free operation, allowing full-duplex simultaneous talk and listen to conversations to take place. If required, a headset may be plugged in, disabling the internal microphone and speaker. LS300 Loudspeaker Stations offer single circuit operation as standard. Dual circuit versions are available on some models.

    Series 2 Tecpro LS300 Loudspeaker Stations provide local monitoring of intercom circuits without the need to wear headphones. The built-in microphone makes them suitable for hands-free operation, allowing full-duplex simultaneous talk and listen to conversations to take place. If required, a headset may be plugged in, disabling the internal microphone and speaker. LS300 Loudspeaker Stations offer single circuit operation as standard. Dual circuit versions are available on some models.

    • Hands-free or headset operation
    • Loudspeakers selected for clear voice reproduction
    • Built-in flush-mounted electret microphone
    • Microphone On/Off button offers push-to-talk or latching characteristics
    • Acoustic feedback cancellation preset
    • Side-tone preset for headset
    • XLR 4-pin input socket for gooseneck microphone or headset
    • Single and dual-circuit versions available on some models
    • DC and 20kHz 'Call Alert' signaling send and receive
    • 24kHz 'Remote Mic Kill' send and receive
    • 28kHz 'Override' signal recognition for preset volume restoration


    All Tecpro LS300 Loudspeaker Stations have carefully selected loudspeakers, for clear voice reproduction and high quality, flush-mounted electret microphone. The microphone, loudspeaker, and associated controls are all mounted on a machined plate.

    LS300 Stations derive power either directly from the 24V DC Tecpro line or, in some cases, from an optional external 24V PSU with a 2.1mm DC connector. Suitable power supplies in the Canford range are 23-984 and 23-925. The external DC supply powers the loudspeaker amplifier directly, thereby considerably reducing the load on the 24V Tecpro line. This helps to avoid the excessive current draw on the system power supply that can result when several loudspeaker stations are connected to it. A green LED indicates power is present.

    The loudspeaker lies behind a protective grill and audio output is controlled by a rotary 'Speaker Level' control. The microphone is mounted some distance away from the speaker. The microphone On/Off button offers push-to-talk and latching characteristics depending on the length of time the button is depressed. LS300 stations can generate and respond to 24kHz 'Remote Mic Kill' tone. If the tone is detected and the microphone is active, it will be switched off automatically.

    Feedback cancellation circuitry helps avoid acoustic 'howl round when speaker and microphone are operating simultaneously. This is adjusted via the 'Cancel' preset. To further reduce feedback, a gooseneck microphone may be plugged in, disabling the internal microphone; the operator can speak in closer proximity to the mic capsule, thereby reducing the likelihood of feedback. Plugging in a headset disables both the internal microphone and loudspeaker.

    Pressing the 'Call' button causes 'Call Alert' lights on other Tecpro user stations to flash (first generation Tecpro illuminates without flashing) to attract the operator's attention. The 'Speaker Mute' button silences the loudspeaker output. To prevent important announcements from going unheard when muted, LS300 stations can be triggered to restore audio levels to a pre-determined volume when a 28kHz 'Override' signal is generated by a master station elsewhere in the system. The 'Override' audio level is adjusted via a preset and can be set anywhere between zero and full volume.

    Note: Care should be taken when using LS300 Loudspeaker Stations in hands-free duplex mode. Although excellent acoustic feedback cancellation can be achieved at each station, system feedback can occur if several hands-free units are operated simultaneously. Using the microphone in push-to-talk mode will help reduce feedback. Alternatively, using a headset will eradicate the problem.

    Power requirements: 24 to 30V DC
    Current consumption: Less than 175mA peak
    External DC input: 24 to 30V DC (some versions only)
    Current consumption: Less than 100mA peak with external PSU (some versions only)
    Headphone output: 30 ohms to 4k ohms
    Microphone input: 200 to 600-ohm dynamic microphones
    More Information
    ManufacturerTecPro