PipeWire Equalizer Settings for Dell XPS 15 (2023)

sink-eq6.conf

# 6 band sink equalizer
#
# Copy this file into a conf.d/ directory such as
# ~/.config/pipewire/filter-chain.conf.d/
#
context.modules = [
    { name = libpipewire-module-filter-chain
        args = {
            node.description = "Internal Speakers Equalizer Sink"
            media.name       = "Internal Speakers Equalizer Sink"
            filter.graph = {
                nodes = [
                    {
                        type  = builtin
                        name  = eq_band_1
                        label = bq_peaking
                        control = { "Freq" = 119.0 "Q" = 1.5 "Gain" = 11.0 }
                    }
                    {
                        type  = builtin
                        name  = eq_band_2
                        label = bq_peaking
                        control = { "Freq" = 238.0 "Q" = 1.5 "Gain" = 2.0 }
                    }
                    {
                        type  = builtin
                        name  = eq_band_3
                        label = bq_peaking
                        control = { "Freq" = 475.0 "Q" = 1.5 "Gain" = -11.0 }
                    }
                    {
                        type  = builtin
                        name  = eq_band_4
                        label = bq_peaking
                        control = { "Freq" = 947.0 "Q" = 1.5 "Gain" = -11.0 }
                    }
                    {
                        type  = builtin
                        name  = eq_band_5
                        label = bq_peaking
                        control = { "Freq" = 1890.0 "Q" = 1.5 "Gain" = -2.0 }
                    }
                    {
                        type  = builtin
                        name  = eq_band_6
                        label = bq_peaking
                        control = { "Freq" = 3771.0 "Q" = 1.5 "Gain" = 2.0 }
                    }
                    {
                        type  = builtin
                        name  = eq_band_7
                        label = bq_peaking
                        control = { "Freq" = 7524.0 "Q" = 1.5 "Gain" = 9.0 }
                    }
                    {
                        type  = builtin
                        name  = eq_band_8
                        label = bq_peaking
                        control = { "Freq" = 15012.0 "Q" = 1.5 "Gain" = 10.0 }
                    }
                ]
                links = [
                    { output = "eq_band_1:Out" input = "eq_band_2:In" }
                    { output = "eq_band_2:Out" input = "eq_band_3:In" }
                    { output = "eq_band_3:Out" input = "eq_band_4:In" }
                    { output = "eq_band_4:Out" input = "eq_band_5:In" }
                    { output = "eq_band_5:Out" input = "eq_band_6:In" }
                    { output = "eq_band_6:Out" input = "eq_band_7:In" }
                    { output = "eq_band_7:Out" input = "eq_band_8:In" }
                ]
            }
	    audio.channels = 2
	    audio.position = [ FL FR ]
            capture.props = {
                node.name   = "internal_speaker"
                media.class = Audio/Sink
            }
            playback.props = {
                node.name   = "internal_speaker_equalizer_output"
                node.passive = true
                node.target = "alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp__sink"
            }
        }
    }
]

Yes, this still works for me. Do sinks show up in the output of wpctl status -n? For example, on my machine, it is

...
Audio
 ├─ Devices:
 │      54. alsa_card.pci-0000_00_1f.3-platform-skl_hda_dsp_generic [alsa]
 │  
 ├─ Sinks:
 │     127. alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI1__sink [vol: 1.00]
 │     136. alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Speaker__sink [vol: 1.00]
 │     148. alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI2__sink [vol: 1.00]
 │     150. alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI3__sink [vol: 1.00]
 │  
 ├─ Sources:
 │  *   58. alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source [vol: 0.46]
 │     119. alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic2__source [vol: 1.00]
 │  
 ├─ Filters:
 │    - filter-chain-2113-29                                        
 │  *   36. internal_speaker                                             [Audio/Sink]
 │      37. internal_speaker_equalizer_output                            [Stream/Output/Audio]
 │  
 └─ Streams:
...

Sorry for the noise, I placed the file in filter-chain.conf.d, but was supposed to place it in pipewire.conf.d, my bad

My sound was always reset to 100% and not remembered when I rebooted so I added
node.state-restore = true
to the capture.props block and it fixed it. Maybe it helps somebody else