Wall-Mounted IP Speaker with 2.4G Wireless Mic and Bluetooth
2x20W Digital Amplifier • 3.4" LCD Display • USB/MP3 Playback • 100V Backup Input • Master/Standby Redundancy
T-7705BG 2.4G MIC BLUETOOTH
The ultimate connectivity in a wall-mount IP speaker. The T-7705BG combines a 2x20W digital amplifier, 3.4" LCD display, and USB/MP3 playback with both a built-in 2.4GHz wireless microphone receiver and Bluetooth audio streaming. Perfect for classrooms, training rooms, and meeting spaces where presenters need wireless mic freedom and guests need Bluetooth connectivity.
| Model Number | T-7705BG |
| Product Type | Wall-Mounted IP Speaker with 2.4G Mic & Bluetooth |
| Display | 3.4-inch LCD (Character/Graphic) |
| Amplifier Output | 2 x 20W (stereo) @ 4-8Ω |
| Wireless Microphone | 2.4GHz digital, built-in receiver |
| Wireless Mic Range | Up to 30m line-of-sight |
| Wireless Mic Battery | Rechargeable, 8+ hours |
| Bluetooth | Version 4.0, A2DP, AVRCP |
| Bluetooth Range | Up to 15m |
| Network | 10/100Mbps Ethernet (RJ45) |
| Audio Protocols | TCP/IP, UDP, HTTP, RTP, RTSP |
| Audio Codecs | MP3, WAV, PCM, AAC (Bluetooth) |
| Media Playback | USB 2.0 (MP3/WAV) |
| Audio Inputs | 1 x MIC (3.5mm), 1 x AUX (RCA) |
| Backup Input | 100V constant voltage (for analog backup) |
| Redundancy | Master/Standby switch, <0.3s failover |
| Frequency Response | 80Hz – 18kHz (±3dB) |
| THD+N | < 0.1% (1kHz, 10W) |
| S/N Ratio | > 85dB |
| Power Supply | PoE (IEEE 802.3af) or DC 24V |
| Power Consumption | ≤ 12W (without speakers) |
| Mounting | Wall mount (included), 86x86mm back box compatible |
| Dimensions (WxHxD) | 180 x 120 x 45 mm |
| Weight | 1.2 kg |
| Operating Temperature | 0°C – 40°C |
| Humidity | 10% – 90% non-condensing |
| Color | White / Black (optional) |
| Certifications | CE, FCC, RoHS |
The T-7705BG features built-in Bluetooth 4.0 for wireless audio streaming from smartphones, tablets, or laptops. Ideal for guest presenters, background music, or temporary audio sources without network configuration. Supports A2DP for high-quality stereo audio.
The T-7705BG is the most feature-rich wall-mounted IP speaker in the T-7705 series, combining a 2.4GHz wireless microphone system with Bluetooth audio streaming. It's designed for environments where maximum connectivity is required: teachers with wireless mics, guest presenters with Bluetooth devices, and background music from multiple sources.
Dual Wireless – 2.4G Mic + Bluetooth: The built-in 2.4GHz receiver works with the included handheld microphone (or optional headset/lavalier) for hands-free presentation. Simultaneously, Bluetooth allows guests to stream audio from their own devices. Both wireless sources can be mixed with network, USB, and wired inputs.
100V Analog Backup: Like other T-7705 series models, this includes a 100V constant voltage backup input. If the network fails, the unit automatically switches to analog paging, ensuring life-safety announcements are never missed.
Complete Audio Mixing: The T-7705BG can mix up to six sources simultaneously: network streaming, USB playback, Bluetooth, 2.4G wireless mic, wired MIC, and AUX input. Each source has independent volume and priority settings configurable via the T-7700RP software.
Master/Standby Redundancy: The built-in master/standby switch enables fast failover (<0.3s) when paired with a second unit, ensuring continuous operation even if the primary amplifier fails.
Built-in receiver, automatic pairing. Handheld or headset options. Up to 30m range, 8+ hour battery.
Wireless audio from smartphones, tablets, laptops. Perfect for guest presenters and background music.
Automatic switch to analog 100V paging during network failure. Ensures life-safety announcements.
<0.3s automatic switchover to backup unit. Hot-standby mode keeps audio synchronized.
| Parameter | Specification |
|---|---|
| Frequency Band | 2.4GHz ISM (license-free) |
| Modulation | Digital GFSK |
| Audio Bandwidth | 50Hz – 15kHz |
| Range | Up to 30m (line of sight) |
| Battery Type | Built-in rechargeable Li-ion |
| Battery Life | 8+ hours continuous use |
| Charging | Micro-USB (included) |
| Microphone Types | Handheld, headset, lavalier (optional) |
| Simultaneous Mics | Up to 4 per receiver |
Included: Handheld mic
Optional: Headset, Lavalier
| Parameter | Specification |
|---|---|
| Version | Bluetooth 4.0 |
| Profiles | A2DP (audio), AVRCP (control) |
| Audio Codecs | SBC, AAC |
| Range | Up to 15m |
| Pairing | Auto-discovery, up to 8 paired devices |
| Multi-point | No (single active connection) |
Bluetooth streaming
From phones, tablets, laptops
The T-7705BG can mix up to six sources simultaneously. Priority levels (1-10) can be assigned to each source via T-7700RP software. Typical configuration: 100V backup = priority 1, wireless mic = priority 2, wired MIC = 3, network = 4, Bluetooth = 5, USB/AUX = 6. Lower number = higher priority, with ducking/muting options.
| Model | Display | Amp | 2.4G Mic | Bluetooth | Backup |
|---|---|---|---|---|---|
| T-7705S | 3.4" LCD | 2x20W | No | No | 100V |
| T-7705B | 3.4" LCD | 2x20W | Yes | No | 100V |
| T-7705BG | 3.4" LCD | 2x20W | Yes | Yes | 100V |
| T-7705BM | 3.4" LCD | 2x30W | Yes | No | 100V |
| T-7705A | 4.3" TFT | 2x30W | Optional | Yes | No |
| Feature | T-7705BG (Bluetooth + Mic) | T-7705B (Mic only) |
|---|---|---|
| 2.4G Wireless Mic | Yes, built-in | Yes, built-in |
| Bluetooth | Yes, 4.0 | No |
| Amplifier | 2x20W | 2x20W |
| 100V Backup | Yes | Yes |
| Master/Standby | Yes | Yes |
| Ideal For | Lecture halls, conference rooms | Classrooms, training rooms |
The 100V backup input is designed for analog 100V line-level signals from a traditional paging amplifier. Do not connect speaker-level outputs directly. The T-7705BG's internal amplifier drives the speakers; the 100V input is just a signal source. Ensure backup amplifier volume is set appropriately.
To pair a Bluetooth device, select Bluetooth source on the T-7705BG front panel. The unit appears as "T-7705BG" on your device. Pairing is persistent – reconnects automatically when in range. Supports up to 8 remembered devices.
Server → PoE Switch → T-7705BG (wall-mounted) → 2x 20W ceiling speakers
Professor uses included wireless handheld mic. Students connect via Bluetooth for Q&A audio. USB drive with lesson material. Network provides campus announcements. 100V backup from analog paging amp ensures emergency announcements during network outage.