Call Us: (800) 992-5279

ClearOne GT 1524 Professional Conferencing

ClearOne GT 1524 Professional Conferencing
ClearOne GT 1524 Professional Conferencing
A single channel echo canceller featuring ClearOne’s professional audio technology. The GT1524 includes a built-in telephone interface and power amplifier to add audio conferencing to existing sound reinforcement and video conference applications.
2 Year Warranty
Warranty:2 Year Warranty 
Be the first to review this product
Read Reviews | Write a Review

General Information

Category:Audio Conferencing EquipmentManufacturer:Clearone
Categorization By Manufacturer:Professional ConferencingModel:910-114-101

The GT1524 provides the highest possible audio quality available in a single-channel echo canceller and features a telephone interface to turn your existing audio system into a cost-effective teleconferencing system. Its simultaneous two-wire/four-wire operation means you can audio conference and videoconference at the same time.


  • Add audio conferencing to video conferencing applications
  • Add audio conferencing to existing sound reinforcement applications

Superior Audio Performance

  • Single Echo Cancellation channel
  • Simultaneous two-wire/four-wire capability brings audio conferencing functionality to video conferencing
  • Full-duplex sound enables participants to speak and listen at the same time without cutting in and out
  • One mic/line input, two lines in, two lines out
  • 20 Hz – 20 kHz bandwidth for full-range audio response
  • 8 kHz sampling rate allows continual adaptation to telephone line conditions
  • Audible ring indication sounds through speaker or line output

System Control

  • Control and program GT1524 via RS-232 connection with ClearOne IR Remote or 3rd-party control systems such as AMX and Crestron, or via front panel buttons and display
  • Integrated touch-tone dialing

Conferencing Capability

  • Built-in telephone interface and power amplifier
  • Connect directly to video codec to enhance audio performance

The GT1524 shall have a mic/line selectable input with echo cancellation to connect to a single mic or external mic mixer. It shall have a 4 wire video codec input and output to connect to a video codec. It shall have an auxiliary input and out put for connected additional audio sources. All audio input and outputs are connected with the supplied 3 pin Phoenix connectors. The teleconferencer shall have a LCD screen for navigation of the setup menus. It shall contain 7 front panel buttons for navigation of setup menus and troubleshooting.

The GT1524 shall have a DB25 contact closure/status ports for external control of the system.

It shall have one DB9 female connection for RS-232 controllability. All functions with in the GT1524 can be accessed through the RS-232 port with the supplied RS-232 protocols. It shall have password protection.

The GT1524 shall have 2 RJ11 connectors, one for a standard POTS, analog telephone line, the other as a telephone set pass through. The impedance of the telephone of the telephone line shall be 600 Ohms at a nominal level of –9 to –15 dBu. The telco shall have an audio frequency response of 250 to 3500 Hz.

The GT1524 shall have an audio response of 20 – 15,000 Hz from any input to any output.

The GT1524 shall be 1 standard rack unit space, 1.75” high and 19” wide with rack mount ears

The ClearOne GT1524 is specified.

Write a review

Your Name*
Review Title*
Your Email (Optional, your email is confidential and will not be shared with any one else)
Your Comments*
Rating*:      Bad      Good 
  • ClearOne has been in the business for more than 20 years and is the world’s leading provider for audio conferencing technologies and solutions. The company dominates the professional conferencing space with more than 54% of global market share. ClearOne’s products enhance presentation, collaboration, multimedia applications and distance communications while creating natural environments for efficient and effective personal/group communication.
    Some of the popular products and solutions offered include premium conferencing, tabletop conferencing, personal conferencing, AV distribution and control, conferencing microphones and media carts. The CHATAttach 150 Personal/Group speakerphone for medium and large conference rooms, CHAT 50 Personal Conferencing, CHAT 150 USB Personal Conferencing and CHAT 170 Personal Conferencing Speakerphone are among the best products.
    ClearOne is committed to provide the highest quality products ranging from office desktop conferencing to large professional conferencing venues like training centers, courtrooms, auditoriums and boardrooms.

  • Specifications

    Audio Performance Conditions

    Unless otherwise specified, all measurements
    are performed with a 22 Hz to 22 kHz BW limit (no weighting).
    Frequency Response: 20 Hz to 15 kHz ±2 dB
    Noise (EIN): -125 dBu, 15 kHz BW, max gain,
    Rs=150 ž
    THD+N: <0.1%
    SNR: 65 dB re 0 dBu
    Dynamic Range: 85 dB

    Telco Audio Performance

    Frequency Response: 250 Hz to 3.3 kHz ±2 dB (AGC disabled)
    SNR: >60 dB re -15 dBm on/off the telephone line
    THD+N: <0.2%, 250 Hz to 3.3 kHz (AGC disabled)
    Pre-emphasis: +4 dB @ 2 kHz
    TEC tail time: 31 ms
    TEC null: 55 dB nominal

    Telco Line

    RJ-11 connector
    POTS (plain old telephone service) line or analog extension from PBX

    Telco Set

    RJ-11 connector
    Connect analog telephone set
    A-lead supervision provided


    DB-9 female
    9,600 (default)/19,200/38,400 baud rate
    8 bits, 1 stop, no parity
    Hardware flow control on (default)/off


    DB25 female
    Inputs: active low (pull to ground)
    Outputs: open collector, 40 VDC max,
    40 mA each
    +5 V pins (2), 300 mA each

    Mic/Line Input

    Push-on terminal block, balanced, bridging
    Impedance: 5 kž
    Nominal Level: adjustable -55 dBu, 0 dBu
    Maximum Level: -33 dBu, +20 dBu
    Echo Cancellation: 120 ms tail time (works with 12 dB of room gain)
    Phantom Power: 24 V, selectable

    AUX In

    Push-on terminal block, balanced, bridging
    Impedance: 20 kž
    Nominal Level: 0 dBu
    Maximum Level: 19 dBu

    4-Wire/Video Codec In

    Push-on terminal block, balanced, bridging
    Impedance: 20 kž
    Nominal Level: 0 dBu
    Maximum Level: 19 dBu

    Line Output

    Push-on terminal block, balanced, bridging
    Impedance: 50 ž
    Nominal Level: 0 dBu
    Maximum Level: 19 dBu

    AUX Output

    Push-on terminal block, balanced, bridging
    Impedance: 50 ž
    Nominal Level: 0 dBu
    Maximum Level: 19 dBu

    4-Wire/Video Codec Out

    Push-on terminal block, balanced, bridging
    Impedance: 50 ž
    Nominal Level: 0 dBm
    Maximum Level: 19 dBu

    Speaker Output

    Binding post; 5 W max into 4 ž

    Power Input Range

    100-240 VAC; 50/60 Hz

    Power Consumption

    30 W typical

    Operating Temp

    32 to 100° F/0 to 38° C


    15% to 80%, non-condensing


    FCC, ASA, CE

    Dimensions (L x D x H)

    17.25" x 10.25" x 1.75"
    43.8 x 26 x 4.5 cm


    7 lb/3.18 kg dry
    12 lb/5.4 kg shipping

    Part Number

    910-114-101 GT1524 Single Channel Echo Canceller

    Customer Testimonials

    "Excellent for collaborative meetings through Webex or in person. Small and easy to transport. Great for capturing notes for an entire group.Fabulous technology!"

    View All Testimonials >    
    We accept these payment methods VISAMaster CardPaypal CheckoutAmerican Express