Support for Bromley 450
Released in 2026, Bromley 450 is a powerful party speaker with True Stereophonic 360° sound.
Latest firmware version
Ensure the firmware is up to date by connecting the product to the Marshall Bluetooth app.
Guides
Getting started
Get your Bromley 450 speaker up and running in no time.
Read guide
Controls
Learn how to use the controls on your speaker.
Read guide
Battery and charging
Everything you need to know about charging Bromley 450.
Read guide
Connect and pair
Get your audio devices connected to your Bromley 450 speaker.
Read guide
Connecting an instrument
Use the combo jack to connect an instrument to your party speaker.
Read guide
Connecting a microphone
Learn how to connect a mic and make it sound great.
Read guide
Child lock
Lock the controls and keep the volume at a safe level.
Read guide
Daisy-chaining Bromley speakers
Connect several Bromley speakers to each other in a series.
Read guide
How to clean
Clean your speaker regularly to keep it fresh and last longer.
Read guide
Factory reset
Restore your Bromley 450 speaker to its original settings.
Read guide
Troubleshooting
Common questions
Product details
Battery type
Rechargeable, replaceable, LFP battery (LiFePO4)
Wireless connectivity
Bluetooth 5.1 Auracast
Dimensions
366 x 261 x 492 mm 14,41 x 27,16 x 19,37 in
Weight
12.32 KG / 16.5 KG including packaging 27.16 LBS / 36.4 LBS including packaging