Yes, a QSC RMX1450 Bluetooth connection is a two-cable job. The inputs are active balanced XLR and 1/4 inch TRS, with no RCA jacks on the panel, so a Bluetooth receiver with XLR output plugs straight in. Full rated power arrives at 1.15 V RMS into 8 ohms, and the amp is discontinued but still everywhere in installed rigs.
Figures on this page were checked October 2026. Every table row carries its source.
Spec snapshot
| Item | Value | Notes | Source |
|---|---|---|---|
| Inputs | XLR + TRS + barrier | Active balanced, tip and pin 2 positive; no RCA jacks | OM |
| Power, FTC | 400 W/ch @ 4 Ω | 260 W at 8 ohms, 20 Hz-20 kHz at 0.1% THD, both driven | OM |
| Bridge mono | 800 W @ 8 Ω | 20 Hz-20 kHz at 0.1% THD; 900 W at 1 kHz | OM |
| Sensitivity | 1.15 V RMS | +3.4 dBu for full rated power at 8 ohms; gain 40x (32 dB) | OM |
| Input impedance | 20 kΩ / 10 kΩ | Balanced / unbalanced | OM |
| Damping and noise | >300 / 100 dB | 8 ohms damping; unweighted noise below rated output | OM |
| Outputs | Posts + Speakon | Touch-proof binding posts, Neutrik Speakon | OM |
| Protection | Full suite | Short, open, thermal, ultrasonic and RF; stable into mismatched loads | OM |
| Bluetooth | Not on this model | Manual describes no wireless input | OM |
| Status | Discontinued | Manual hosted in QSC's discontinued products archive | OM |
Source code: OM = QSC RMX Series User Manual, 2RU models (accessed 2026-10-02).
Where to connect
Active balanced XLR inputs
RecommendedThe manual's connector row lists active balanced XLR and 1/4 inch TRS inputs with pin 2 and tip positive. A Bluetooth receiver with XLR output plugs straight in, one cable per channel, and nothing else sits in the chain.
¼" TRS inputs
Good alternativeThe balanced TRS jacks mirror the XLRs, so a receiver with a 1/4 inch balanced output works equally well. The barrier strip remains for fixed installations that prefer screw terminals.
RCA consumer sources, direct
Not supportedThere are no RCA jacks on the RMX1450; the manual's connector list ends at XLR, TRS and barrier strip. A receiver with a proper XLR output is the clean route, and it keeps the run balanced.
Set up in three steps
- Check the DIP switch bank
The rear 10-position DIP switch sets the amp's operating choices per the manual, so confirm its position before the show rather than during.
- Connect and power
XLR from the receiver, speakers on the binding posts or Speakon jacks, then AC. The variable-speed fan pulls air back to front.
- Level check
Raise the two gain controls with music playing. The yellow signal LEDs track the feed and the red clip LEDs mark the ceiling, with 2 dB of dynamic headroom in reserve at 4 ohms.
Quirks and notes
- Barrier strip on board (verified): alongside the XLR and TRS jacks, the manual lists a barrier strip input, a fixed-installation habit from the era that still helps permanent racks.
- Old-school headroom (verified): dynamic headroom is 2 dB at 4 ohms, meaning the FTC rating is honest rather than optimistic, a QSC trait the RMX series built its reputation on.
- Protection without drama (verified): the manual lists full short circuit, open circuit, thermal, ultrasonic and RF protection, and states the amp stays stable into reactive or mismatched loads.
- Discontinued, not gone (verified): QSC moved the RMX documentation to its discontinued products archive, and the amps still anchor plenty of school and church racks.
What you need
- Bluetooth receiver with XLR output, aptX HD preferred for source quality
- One XLR cable per amp channel, or TRS cables for the balanced jacks
- Speaker cable for the binding posts or Speakon jacks
- USB power for the receiver, a phone charger is fine
FAQ
Plug the XLR output of a Bluetooth receiver into the amp inputs with standard XLR cables, run speaker cable from the binding posts or Speakon jacks, then raise the two front-panel gain controls after playback starts. Both channels need a feed for stereo.
The specifications list 1.15 V RMS (+3.4 dBu) for full rated power at 8 ohms, 40x voltage gain, and 10 kilohm unbalanced or 20 kilohm balanced input impedance.
No. The user manual describes no wireless input of any kind. Bluetooth arrives with the receiver you connect to its XLR or TRS inputs.
The RMX series is discontinued, and QSC hosts the manual in its discontinued products archive. The amplifier remains common in installed and mobile rigs, which is why the wireless connection path still matters.
blafili XLR Bluetooth Audio Receiver
XLR output for balanced inputs, aptX HD, USB powered with a 16-hour battery. Plugs into the RMX1450 XLR inputs directly.
- Output power (FTC 20 Hz-20 kHz at 0.1% THD both channels driven: 260 W per channel at 8 ohms and 400 W at 4 ohms for the RMX1450; EIA 1 kHz: 280 W at 8 ohms, 450 W at 4 ohms; 2 ohms 700 W at 1% typical; bridge mono 800 W into 8 ohms at 0.1%), dynamic headroom 2 dB at 4 ohms, SMPTE-IM under 0.01%, frequency response +0/-1 dB with -3 dB points at 5 Hz and 50 kHz, damping factor over 300 at 8 ohms, noise 100 dB unweighted below rated output, voltage gain 40x (32 dB), input sensitivity 1.15 V RMS (+3.4 dBu), input impedance 10 kilohms unbalanced and 20 kilohms balanced, connectors (input active balanced XLR and 1/4 inch TRS plus barrier strip; output touch-proof binding posts and Neutrik Speakon), controls and indicators, variable-speed back-to-front fan, full protection suite: QSC RMX Series User Manual (2RU models), qscaudio.com/resource-files/productresources/amp/discontinued/rmx/q_amp_rmx_series2ru_usermanual.pdf, accessed 2026-10-02