Ovation ™ Amplifier Receiver Mixer


The Ovation™ stands out in its class with the power, superior voice quality, and a feature set that supports the myriad of classroom audiovisual technologies connected to it. Users will applaud its easy-to-use interface while it is hands down, or maybe up, one of the easiest systems to set up and requires virtually no maintenance over TeachLogic’s famously long service life.

Amplifier | DECT Microphone Receiver | Audio Mixer







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Ovation ™ Amplifier Receiver Mixer Details


  • Radio based wireless receiver (DECT), audio mixer, and integrated audio amplifier.
  • Auto-reconnect when mics move out of range then return to in-range.
  • Supports remote external antennae for enhanced coverage, remote mounting.
  • 2 wireless microphone channels plus a 3rd wired microphone support.
  • Powers 4 x 8 Ω classroom speakers.
  • Video Conference Sync w/ EchoGuard™.
    • > Front panel“ Conference” input & output: connects to host computer to synchronize classroom audio w/ video conference application. 3.5mm or USB audio interface with additional adapter.
    • > EchoGuard™ prevents remote audio from being looped back into conference audio.
    • EchoGuard can be turned on or off by selector switch.
  • 4 line inputs:
    • > Rear panel: 3.5 mm auxiliary input (mic or line level switch) | Rear panel: 3.5mm input | Rear panel: 3.5 mm computer input w/ anti-hum (On/Off switch) | Front panel: 3.5 mm auxiliary (Conference) input.
  • Assistive Listening System (ALS) output with level control on rear panel (3.5mm).
  • Connection to building paging system.
    • Mutes all audio inputs to allow page to be heard (Page Muting).
    • Passes page signal to classroom speakers (Page Pass Through). Note: not intended as a life safety audio transmission feature.
    • Pass through feature can be turned on or off by selector switch.
    • Pages pass through to Assistive Listening System and Conferencing outputs (** important for those listeners **).
    • Most open and flexible system available. VOIP, 25V, 70V
  • OA-50 supports teacher security alerting function from wireless microphone (OM-10).
  • Remote teacher control over line input volume (control from teacher microphone).
  • Fire Alarm connection: mutes all audio sources when fire alarm sounds.
  • Controllable by TeachLogic or any third-party RS-232 devices for all input levels (volume up, down, and mute)
  • Digital Feedback Guard (DFG): reduces any chance for audio feedback.
  • Low-power standby mode (both automatic and manual activation


Receiver Input

DECT 6.0 Radio, 2 mic channels


DQPSK (Differential Quadrature Phase Shift Keying)

Reception Frequencies

1.92-1.93 Ghz DECT 6.0

Frequency Planning

Automatic; actively avoids interference for high density use; 60 talk channels

Antennae Options

Full diversity; back panel or 10’ extension with magnetic mount to remote external

Mic Pairing Controls

Front panel and remote, with optional OP-10 remote panel.

Connectivity Coverage

2000 sq ft.

Amplifier Output Power

50 W RMS at 4Ω, 2 x 24.5 W channels

Total Harmonic Distortion

< 0.1% @ 1 kHz

Frequency Response

15 Hz – 22 kHz, ± 3 dB

Line Level Inputs

4: 3.5 mm

Anti-Hum Isolation Balun

Switchable (off/on) at computer input


5-band, ±10 dB

S/N Ratio

70 dB

Wired Mic Input

1 aux input switchable to dynamic mic

Line Outputs

Conferencing: 3.5 mm with gain control – front panel
Assistive Listening System: 3.5 mm with gain control – rear panel

Page Input

2-pin phoenix; 4 V, 25 V or 70 V nominal; fully isolated

Page Input Sensitivity

50 mV to 12.6V

VOIP Page Integration

Interfaces with all VOIP system at analog level with highly sensitive low power page interface.

Security Alert

Contact closing/opening, 1 or 4 pulse selectable

Fire Alarm

Contact closure by fire panel mutes audio

Charger Output

5 VDC, 1 A, USB-A

Power Supply

19 VDC / 3.5 A CE, CSA and UL Listed

Dimensions 7.5 × 8.5 × 1.75 in
Weight 1 lbs 12 oz


Front of OA-50 receiver/amplifier
  1. Power Button Logo Indicator Light
  2. MIC A Microphone Volume Control
  3. MIC A Pairing Button and Indicator Light
  4. MIC B Microphone Volume Control
  5. MIC B Pairing Button and Indicator Light
  6. DVD Input Volume Control
  1. Computer Input Volume Control
  2. Aux Input Volume Control
  3. Video Conference Input Volume Control
  4. Video Conference Input Port (3.5 mm)(Also suitable for Aux audio source)
  5. Video Conference Output Volume Control
  6. Video Conference Output Port (3.5 mm)(Also suitable for Lesson Capture)
TeachLogic Ovation Receiver Amp OA 50 front controls


TeachLogic Ovation Receiver Amp OA 50 back controls
Back of OA-50 receiver/amplifier
  1. Speaker Output
  2. Fire Alarm Mute Input
  3. Page Input
  4. Page Sensitivity Control
  5. Page Input Voltage Selector
  6. ALS Output (3.5 mm) & Gain Control
  7. Five Band Equalizer Controls
  8. RS-232 Input & OFF/ON Switch
  1. Security Alert Interface
  2. Aux Input Port (3.5 mm) & Aux Mic/Line Input Level Selector; Mic: -40dB/Line: -10dB
  3. Computer Input Port (3.5 mm) / Computer Anti-Hum ON/OFF Switch
  4. DVD Input Ports (3.5 mm)
  5. External Pairing Control for OP-10 Wall Mount Control Panel
  6. 5 Volt USB Output for chargers
  7. Power Input: 19 VDC, 3.5 A

Ovation ™ Amplifier Receiver Mixer Components

Classroom Component Layout

Ovation Audio System Classroom Layout Diagram
  • Ovation™ (OM-10) wireless pendant transmitter, a high-quality cardiod microphone with lanyard.
  • Ovation™ audio amplifier/receiver to support classroom audio sources.
  • SP-628 Ceiling Speakers (four shown) provide excellent quality voice reproduction.
  • SP-2000 Wall Mount Speakers (optional), allow for installation when ceiling is not accessible.

Ovation ™ Amplifier Receiver Mixer Downloads

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