GARMIN® GMA 345
At full capacity, GMA 345 will support dual comm, dual nav and multiple aux receivers — totaling up to 7 radios. There’s a 6-place automatic VOX intercom with 3 modes of isolation. And a split-comm mode lets the pilot and copilot broadcast on independent frequencies. For example, the pilot can use COMM 1 while the copilot uses COMM 2. To further enhance the cockpit audio experience, advanced Auto Squelch technology on GMA 345 automatically adapts to a quiet or noisy environment without clipping words or cutting out during conversation. A high-performance digital signal processor constantly monitors ambient noise level and automatically adjusts the mic squelch level required to keep intercom conversation as comfortable and natural as possible — whether you’re talking over engine noise in flight or quietly going through your preflight checklist on the ground. The unit’s Auto Squelch technology automatically adjusts for these variances, allowing you to speak at normal levels, no matter what the ambient sound conditions may be.
Bringing rich “home theater” quality sound and wireless Bluetooth audio connectivity to your avionics stack, the GMA 345 digital audio panel offers a superior inflight audio experience at an affordable price. Featuring 3-D spatial sound processing, a USB charging port, marker beacon receiver, advanced Auto Squelch, clearance playback and impressive audio mixing and distribution features, this all-digital unit offers the ideal blend of capabilities for pilots who want to hear and do more with less effort in the cockpit. Plus, it’s an easy slide-in upgrade from select third-party audio panels or legacy GMA 340 units. Built-in Bluetooth connectivity makes it easy for you to wirelessly pair your smartphone or other compatible device with the audio system. So, you can make and receive calls in the cockpit, as well as stream audio entertainment through as many as 6 headset positions in the aircraft. The powered 2.1 amp USB port on the unit’s faceplate helps keep your phones and mobile devices charged. Moreover, GMA 345 features 2 dedicated rear audio connections, allowing hardwired sources — such as SiriusXM® satellite radio or other high-fidelity music inputs — to be played and distributed through the audio system. Music effects also add to the rich audio experience provided by GMA 345. You can select enhanced bass boost levels as well as equalizer effects that include rock, classical and pop audio profiles. GMA 345 can pair via Bluetooth with the VIRB Ultra 30 series of HD action cameras — allowing you to overlay intercom audio and ATC communications on the HD inflight video you’re shooting. Since there’s no headset audio cable required, your VIRB action camera is free to move about the cabin so you can shoot from the best possible angle.
For radio communications, advanced 3-D digital sound processing, first introduced to general aviation by Garmin, enables GMA 345 to approximate how the human ear normally hears and registers multiple audio sources in space. With stereo headsets, incoming audio is spatially separated to reflect how different audio sources are coming from different directions around you. This makes it easier to distinguish one source from another — and helps you focus on the higher-priority calls coming into your headset. For example, COMM 1 will seem like it’s coming from the left while COMM 2 will seem to be coming from the right.
An automatic digital voice recorder on the audio panel continuously captures the last 60 seconds of incoming active comm audio for instant playback on request with a single button press. Any pilot who’s ever missed an ATC call, frequency assignment or clearance amendment will appreciate the value of this handy “say again” function.
Upgrading the audio experience in your cockpit is easy with GMA 345. It’s fully rack-and-pin compatible in dual-Comm installations with the Garmin GMA 340 as well as select third-party audio panels. So, it doesn’t take long for your installer to pull out the old and slide in the new. The audio panel’s built-in intercom and marker beacon help further reduce installation time for the system. And since it can operate on either 14 or 28 volts, there’s no need for any external voltage regulators or the wiring that goes with them. Fast, easy, affordable — that’s the GMA 345 audio upgrade path.
Certification: FAA Export 8130-3
Warranty: 24 months
Product Specifications
Physical & Performance
Electrical: 14-28 VDC
Unit Size: 6.3"W x 1.33"H x 8.09"D (160 x 34 x 205 mm), includes mounting rack and connectors
Weight: 1.78 lbs (807.4 g), includes rack, backplate and connectors
Environmental
Temperature: -20° C to +55° C (operating)
Altitude range: to +55,000 ft. MSL unpressurized
Power requirements: 11 to 33 VDC input
Radio Inputs
Impedance: 600 ohm
Max input: 5 Vrms
Isolation: 60 dB minimum
Bandwidth: 100 Hz to 6.5 kHz
Transceiver: 3 (including TEL)
Receiver: 5 (NAV1, NAV2, AUX1, AUX2, AUX3)
Alerts: 4 (unswitched)
Telephone input: 1
Intercom Functions
Positions: 6 (pilot, copilot, 4 passengers)
Volume control: 2 (pilot, copilot/passengers)
VOX: Automatic (1 per MIC input)
Modes: Pilot, crew, all
MIC impedance: 150 ohm
MIC bias: 11 VDC through 470 ohm
Keyed ICS: Configurable
Music functions
Inputs: 2 (Independent from Bluetooth audio)
Impedance: 600 ohm (differential)
Max input: 3.0 Vrms
Gain: +24 dB Max/-96dB Min
Input level: < 200 mVrms at max gain for full power out
Bandwidth: 20 Hz to 20 kHz
Distortion: < 0.1% THD+N typical at full power over full bandwidth
Muting: Selectable and configurable
Volume Control: Knob controlled (Pilot and copilot/passenger)
Bluetooth
Supported profiles: A2DP (music streaming), AVRCP (music playback control) and HFP (phone)
Paired devices stored: 10
Connections allowed: 1 device
Supported devices: Phones, tablets, VIRB XE, VIRB Ultra 30 and select 3rd party cameras
Volume: Set by device and adjustable usingGMA controls
Headphone Outputs
Output amplifiers: 3 stereo (pilot, copilot, passenger)
Output power: 65 mW into 150 Ohms pilot and copilot, 260 mW into 37.5 Ohms passenger
Distortion: < 3% THD+N at 10% Power, < 10% THD+N at full power
Frequency response: 20 Hz to 20 kHz
Impedance rated: 150 Ohm pilot/copilot, 37.5 Ohm passenger (4-150 Ohm headsets)
Impedance supported: 150 to > 600 Ohm
COM/TEL Microphone Outputs
Output power: 15 mW into 150 Ohms (1.5 Vrms)
Distortion: < 3% THD+N at 10% power, < 10% THD+N at full power
Frequency response: 300 Hz to 6 kHz
USB Charge Port
Rated power: 10 Watt
Max charge current: 2.1 Amps
Overcurrent protection: USB charge port protection with current > 2.3 Amps
Charging scheme: DCP
Speaker
Outputs: 1
28 Volt aircraft: 10 Watt into 4 Ohm; 7 Watt into 8 Ohm
14 Volt aircraft: 3 Watt into 4 Ohm; 8 Ohm Not Recommended
3dB@1kHz Bandwidth 350 Hz to 6.5 kHz
Distortion: < 10% THD+N at full power, < 3% THD+N at 10% power
Voice Recorder
Record time max: 1 minute
Code Load Options
SD Card
DIP Switch
Config switches: 8 (see install manual for descriptions)
Lighting Bus
Voltage: 14 V or 28 V
Accessories: Installation Kit and other accessories are available at additional cost.
GARMIN® GMA 350
The GM 350 makes in-flight entertainment easy. The first truly all-digital audio panel, the GM 350 introduces a number of new technologies to the cockpit, including Telligence™ Voice Command, 3-D audio processing and advanced auto squelch.
Permanently wire 2 dedicated input sources into the rear connectors, such as an XM receiver and an auxiliary music device. Plug your portable audio devices (such as MP3 players or mobile phones) into the 3.5 mm jack on the front. Control which headset positions have access to which audio sources with the “blue-select” mode so your passengers can enjoy music while you listen to radio communications or make private full-duplex telephone calls. The intuitive front panel layout features cursor control and volume indicator for easy operation. Advanced auto squelch automatically adapts to a quiet or noisy cockpit without clipping words or cutting out in the middle of phrases. An internal microphone also senses ambient noise and adjusts the cockpit speaker volume level accordingly. The system analyzes ambient noise level and adjusts volumes for the headsets (when configured to do so at the time of installation), making alerts quieter when you're on the ground.
Advanced processing in the GM 350 adjusts audio in the headset to mimic how the human ear normally hears and registers sounds in space. 3-D Audio makes it seem like different audio sources are coming from different directions so you can easily distinguish one source from many. For example, COMM 1 will seem like it's coming from the left while COMM 2 will seem like it's coming from the right.
With built-in Telligence Voice Command, the GM 350 helps decrease pilot workload. Operate your audio panel without taking your hands off the controls. To switch between COMMs, just press a button and say “MIC 1” or “MIC 2.” A split COMM mode lets the pilot and copilot broadcast on independent frequencies. The automatic digital voice recorder continuously captures the last 2.5 minutes of audio for playback, so you can go back and listen if you miss an ATC call or frequency assignment.
Product Features:
Intuitive front panel layout with cursor control and volume indicator
6 to 7 position intercom: pilot, copilot, and 4 or 5 passengers
3 stereo headset amplifiers: pilot, copilot and passengers
2 stereo music source inputs
5 selectable intercom operational modes
Independent pilot, copilot and passenger volume controls
Individual VOX processing for each mic input
Automatic selection of radio audio source when corresponding mic is selected
Split COMM transceiver function. Copilot may transmit and receive on one COMM while pilot transmits and receives on another.
Voice recognition
Automatic audio adjustment for ambient noise
3-D Audio
Marker beacon receiver with lamp driver outputs
Includes marker, AUX and speaker volume controls; also features 3D spatial audio and automatic speech recognition.
Product Specifications:
Physical dimensions: 6.25”W x 1.30”H x 7.80”D (15.9 x 3.3 x 19.8 cm)
Weight: 2.4 lb (1.1 kg)
Telephone interface: dedicated full-duplex tel interface (no PTT keying required)
ICS (intercom system): 6 to 7 position intercom (individual VOX processing for each mic position)
ICS isolation modes: 5 - All, Pilot, CoPilot, Crew/Pass, None
Transceivers: 2 - COM1, COM2
Additional receiver inputs: 5 - NAV1, NAV2, AUX1, AUX2, AUX3
Music source input: 2 stereo music source inputs
Music input impedance: rear pins: 600 Ohms; front panel jack: 5 kOhms
Music frequency response: 20Hz - 20kHz
Speaker output: 28V aircraft — 10W into 4 Ohms, 7W into 8 Ohms; 14V aircraft — 3W into 4 Ohms
PA function: pilot selectable — requires pressing and holding SPKR button to change state
Marker beacon: dual sensitivity
Manual squelch: YES
Automatic squelch: YES
SmartMute (includes SmartMute marker audio muting): YES
Intercom volume controls: YES
Manual VOX level controls: 1 (shared threshold, individual processing)
Avionics squelch (squelch processing for noise reduction): YES
Failsafe (connects Pilot PTT, mic and headset to COM1 if unit is turned off): YES
Clearance recorder: YES
Split com (CoPilot transmits and receives on Com2 while Pilot transmits and receives on Com1): YES
Alert/Unswitched inputs: 5
Front panel jack: YES (3.5mm - smartphone compatible)
Front panel music volume control: YES (music and telephone volume controls)
Certification: TSO
Accessories: Installation Kit and other accessories are available at additional cost.