The BT-Pro is a Bluetooth® direct box designed to capture the wireless transmission from a Bluetooth® enabled device and convert the signal to a balanced line for use in a PA or recording system. It employs an innovative T-shaped access cavity behind which is located the antenna. This is protected by a milled insert made from Sintra® – a rugged closed-cell PVC - that permits the wireless transmission signal to pass without interference, allowing reception distances to 20 meters (60') under ideal conditions.
The audio signal path itself employs the latest Bluetooth wireless A2DP interface over 2.0 EDR (Enhanced Data Rate) for higher speed transmission to deliver optimal audio quality. This standard employs a 16-bit wireless compressed format with the actual bit rate determined by the transmission source material. Inside, the BT-Pro converts the data to a stereo analog signal, producing up to +4dB at the output. The signal level is controlled by a front panel potentiometer that is shared with the built-in headphone amp with standard 3.5mm mini TRS that is used for trouble shooting. For greater flexibility, a stereo-to-mono switch sums the stereo output for dual-mono operation to reduce input channel requirements on the mixer or to share the signal between separate systems. Should noise be encountered, two side-mounted isolation transformers may be inserted into the signal path. This is augmented with a ground lift switch for the XLRs to further help eliminate hum and buzz caused by ground loops.
Connecting to the BT-Pro is easy. The BT-Pro is powered by an external 5V supply via a mini USB port and may also be powered from a laptop or USB hub. Once turned on, two top-mounted LEDs will toggle as it awaits paring. Turn on your Bluetooth device and its transceiver sends an initial pairing message to identify the BT-Pro. This will show up as 'RadialEng'. A connection pass code is then used to initialize the connection. This important safety feature ensures other nearby Bluetooth devices cannot 'pollute or hijack' the system. Once paired, the BT-Pro's red LED will remain illuminated and undulate to blue to let you know the two Bluetooth devices are talking to each other.
The Radial BT-Pro… a wireless DI made for professional touring.
Bluetooth reception to 12 meters (40 feet!)
Dual balanced XLR outputs to connect to PA system
Built-in headphone amp for trouble shooting
Isolation transformers to eliminate buzz and hum
Conditions
For Use in Dry Locations only Between 5°C and 40°C
Bluetooth Compliance
Bluetooth 2.0 W/EDR
Data Compression
SBC Codec
Compatibility
All Bluetooth A2DP Compliant Devices
Frequency Response
20hz – 20Khz
Dynamic Range
90dB
S/N
96dB
Maximum Gain
+8dBu (Source File Dependent)
Total Harmonic Distortion
0.01%
Stereo Separation
75dBu
Output Impedance
300 Ohms Nominal
Audio Output
Stereo Balanced Mic Level (2 x XLR-M)
Headphone Output
3.5mm TRS
Level Control
Variable, Works on Headphone and XLR
Transformer Isolation
Independent for Each Channel
Mono Switch
Sums Left and Right Channels
Ground Lift
Lifts Pin 1 on Both XLR Outputs
Power
USB Mini Connector (Power Only)
Finish
Durable Powder Coat
Size
3.3" x 5.0" x 2" (84 x 127 x 48mm)
Weight
1.5 lb (680 kg)
FCC Approval
Complies with Section 15 of the FCC Rules
Conditions
For Use in Dry Locations only Between 5°C and 40°C
