My JBx Headset Control v2.0.0 – EQ presets

Control your JBL Quantum 950 Wireless from an Elgato Stream Deck – now with EQ presets. QuantumENGINE doesn't need to be running.

What's new

• EQ Preset (key) – applies an EQ preset from JBL QuantumENGINE: all system presets and your own custom ones. Shows the preset name, highlighted when active.
• EQ Preset Dial (dial) – rotate to browse all presets, press or tap to apply.
• Apply on select – optionally send a preset as soon as you pick it in the Property Inspector.
• Safety self-test – the EQ is only enabled if the computed data matches QuantumENGINE byte for byte.

Actions

• Mute – microphone icon: white when live, red and crossed out when muted
• ANC / Ambient – Off / Noise Cancelling / Ambient Aware, colors configurable
• Spatial Sound – Off / Fixed / Head Tracking, colors configurable
• Battery – battery graphic that fills according to the charge level
• Game-Chat Balance (dial) – JBL header, live battery readout, headset icon and a two-color balance bar; rotate to adjust, press to reset to 50/50
• EQ Preset (key) – new
• EQ Preset Dial (dial) – new

Highlights

• Configurable header text (default JBL) on every key and the dial – toggle on/off and change the text per action
• Configurable colors and separate Offline / No-Dongle backgrounds
• Robust offline detection: starts offline, goes online on the first real status packet, stays online until power-off – no false "online" after a cold start
• All keys and the dial update instantly when anything changes

Requirements for the EQ actions

• JBL QuantumENGINE must be installed (it doesn't need to be running). Presets are read from its q950.dat, and the filter coefficients are computed with its local DLL – the same way QuantumENGINE does it. The DLL is not included in this plugin.
• All other actions work without QuantumENGINE.
• QuantumENGINE doesn't notice presets applied by the plugin and keeps showing its own last selection – the headset uses the preset from the plugin anyway.
• If the EQ shows Locked in the Property Inspector, set the DLL path there (usually C:\Program Files\JBL\QuantumENGINE\PEQ\).

Note on OFFLINE

If the headset shows OFFLINE after you switch it on, give the volume wheel a notch (or toggle ANC / mute) so it sends a status packet – it then goes online immediately. Switching the headset on while the PC is already running usually avoids this.

Install

Download the .streamDeckPlugin file below and double-click it. If an older version is installed, it is replaced. Requires Windows 10/11 and Stream Deck software 7.1+.

Thanks

A big thank you to @Shiro836 for the EQ research – the feature IDs, the hint that the coefficients come from QuantumENGINE's serializePEQ, and the verified preset data. Without that, EQ support wouldn't exist.

Not affiliated with JBL / HARMAN.

My JBx Headset Control v1.0.0 – Stream Deck plugin for JBL Quantum 950

Control your JBL Quantum 950 Wireless from an Elgato Stream Deck – no QuantumENGINE required.

Actions

• Mute – microphone icon: white when live, red and crossed out when muted
• ANC / Ambient – Off / Noise Cancelling / Ambient Aware, colors configurable
• Spatial Sound – Off / Fixed / Head Tracking, colors configurable
• Battery – battery graphic that fills according to the charge level
• Game-Chat Balance (dial) – JBL header, live battery readout, headset icon and a two-color balance bar; rotate to adjust, press to reset to 50/50

Highlights

• Configurable header text (default JBL) on every key and the dial – toggle on/off and change the text per action
• Configurable colors and separate Offline / No-Dongle backgrounds
• Robust offline detection: starts offline, goes online on the first real status packet, stays online until power-off – no false "online" after a cold start
• All keys and the dial update instantly when anything changes

Note on OFFLINE

If the headset shows OFFLINE after you switch it on, give the volume wheel a notch (or toggle ANC / mute) so it sends a status packet – it then goes online immediately. Switching the headset on while the PC is already running usually avoids this.

Install

Download the .streamDeckPlugin file below and double-click it. Requires Windows 10/11 and Stream Deck software 7.1+.

Not affiliated with JBL / HARMAN.