Yes, a Behringer B115D Bluetooth connection takes one XLR or 1/4 inch TRS plug. Both inputs are servo-balanced combos rated from -36 dBu up to 0 dBu sensitivity with a trim running to +36 dB, so a Bluetooth receiver with XLR output plugs straight in. The wireless option in the title is Behringer's ULM mic dongle, not Bluetooth streaming.
Figures on this page were checked October 2026. Every table row carries its source.
Spec snapshot
| Item | Value | Notes | Source |
|---|---|---|---|
| Inputs | 2 × XLR/TRS combo | Servo-balanced, -36 to 0 dBu sensitivity, 14 kΩ, per-channel gain | QSG |
| Bluetooth | Not on this model | The wireless option is a ULM mic dongle on USB, not streaming | QSG |
| Amplifier | 700 W LF + 300 W HF | Max output figures, independent of limiters and driver protection | QSG |
| Frequency response | 45 Hz-20 kHz | B115D rating; crossover at 2.2 kHz | QSG |
| Equalizer | 2-band | Low plus or minus 15 dB at 80 Hz, high plus or minus 15 dB at 12 kHz | QSG |
| Input trim | -∞ to +36 dB | Maximum input level 18 dBu | QSG |
| Link output | MIX OUT XLR | Sends a copy of the source to another speaker | QSG |
| Limiter | Optical | With clip LEDs on input and main output | QSG |
| Weight / size | 17.5 kg | 713 × 427 × 313 mm; draws up to 110 W | QSG |
| Wireless mics | ULM via USB | 2.4 GHz digital link, up to 80 m line of sight, 20 Hz-20 kHz | QSG |
Source code: QSG = EUROLIVE B115D/B112D Quick Start Guide (accessed 2026-10-02).
Where to connect
Combo XLR/TRS inputs (INPUT 1, INPUT 2)
RecommendedBoth channels are servo-balanced and rated from -36 dBu up to 0 dBu, with a trim that reaches +36 dB, so a Bluetooth receiver with XLR output plugs straight in and finds level easily. The CLIP LED on each input marks overload as you set it.
MIX OUTPUT to a second cabinet
For the pairThe manual describes the MIX OUTPUT as a copy of the source signal sent over XLR to another speaker. One receiver feed can therefore cover two cabinets in the common daisy-chain layout.
Speaker-level sources
Not supportedThe two combo jacks are the only audio inputs and they expect mic or line level per the manual. Amplifier outputs belong on passive speakers, not on this active cabinet's inputs.
Set up in three steps
- Pick the input
INPUT 1 for the receiver, INPUT 2 free for a wired mic. Set the trim low before anything plays.
- Connect and power
XLR from the receiver, then the IEC mains. The integrated mixer stage gives each input its own gain knob, plus a shared low and high EQ for room shaping.
- Level check
Raise the trim with music playing until the level is healthy and the input CLIP LED stays dark on peaks. The optical limiter guards the drivers, but steady limiting means back off upstream.
Quirks and notes
- An integrated mixer on the back (verified): per-channel gain, two-band EQ and clip monitoring mean the cabinet runs without an external mixer for small sets, which is why the title carries the phrase.
- The wireless option is microphones only (verified): the USB 3.0 slot accepts Behringer's ULM digital wireless microphone receiver on the 2.4 GHz band, rated 20 Hz to 20 kHz with up to 80 meters of line-of-sight range. Phone streaming still arrives through your receiver.
- Link before you split (verified): the MIX OUTPUT XLR carries a copy of the source signal, so the second cabinet hears exactly what the first does, gain settings aside.
- Two-band tone (verified): low and high shelves at 80 Hz and 12 kHz plus or minus 15 dB shape the room quickly, though there is no mid control for problem frequencies.
What you need
- Bluetooth receiver with XLR output, aptX HD preferred for source quality
- One XLR cable, receiver to speaker
- Mains outlet within cable reach, the cabinet draws up to 110 W
- USB power for the receiver, a phone charger is fine
FAQ
Plug a Bluetooth receiver with XLR output into INPUT 1 or INPUT 2 with a standard cable, start the input trim low, and raise it as playback runs. The CLIP LED marks the ceiling as you go.
No. The quick start guide describes no Bluetooth of any kind. The wireless option it carries is a USB 3.0 dongle slot for Behringer ULM digital wireless microphones on the 2.4 GHz band, which is a microphone link rather than music streaming.
Two servo-balanced combination jacks that take XLR or 1/4 inch TRS plugs, one per channel with its own gain knob. Sensitivity spans -36 dBu to 0 dBu at 14 kilohms impedance, and the input trim runs from minus infinity to +36 dB with an 18 dBu maximum input.
Yes. The MIX OUTPUT sends a copy of the source signal over an XLR cable to another speaker, per the manual, so a pair mirrors the same feed without splitters.
blafili XLR Bluetooth Audio Receiver
XLR output for balanced inputs, aptX HD, USB powered with a 16-hour battery. Plugs into the B115D combo inputs directly.
- Title ("Active 2-Way 15/12 inch PA Speaker System with Wireless Option and Integrated Mixer"), amplifier sections (low-frequency max output 700 W and high-frequency max output 300 W, each independent of limiters and driver protection circuits), inputs (two servo-balanced XLR/TRS combination jacks, sensitivity -36 dBu to 0 dBu, 14 kilohms, input trim -infinity to +36 dB, max input 18 dBu), MIX OUTPUT balanced XLR, equalizer (low plus or minus 15 dB at 80 Hz, high plus or minus 15 dB at 12 kHz), frequency response 45 Hz-20 kHz, crossover 2.2 kHz, optical limiter, wireless system (USB 3.0 dongle, 2.4 GHz band, 20 Hz-20 kHz plus 0/-2.5 dB, range up to 80 m line of sight), power consumption max 110 W, 713 x 427 x 313 mm, 17.5 kg (38.6 lbs): EUROLIVE B115D/B112D Quick Start Guide, cdn-media.empowertribe.com/256a4b99b77644519b8a872aa409379d/QSG_BE_0313-AEB_B115D-B112D_WW.pdf, accessed 2026-10-02