How disable inline speakers and leave only jack speaker? Thanks
Hi I assume that you are referring to the MIC+
It is possible to disconnect the hardware, to do so on the back of the board you have 2 tiny solder points called ‘CUTL’ and ‘CUTR’, using a soldering iron remove the excess of soldering.
thanks
Hello, sorry for not specifying, it’s the ultra. It’s possible to only have jack3.1 audio?
Yes it should be possible by changing the alsamixer parameters I think that there is a control called speakers to put to 0
It does not work. Is there a way to do this physically? thanks
Low tech approach : some tape on the speakers 
High tech : send me an export of your alsa config typing
sudo alsactl store -f filetosendme.conf
state.seeed2micvoicec {
control.1 {
iface MIXER
name ‘Capture Volume’
value.0 40
value.1 40
comment {
access ‘read write’
type INTEGER
count 2
range ‘0 - 63’
dbmin -1725
dbmax 3000
dbvalue.0 1275
dbvalue.1 1275
}
}
control.2 {
iface MIXER
name ‘Capture Volume ZC Switch’
value.0 0
value.1 0
comment {
access ‘read write’
type INTEGER
count 2
range ‘0 - 1’
}
}
control.3 {
iface MIXER
name ‘Capture Switch’
value.0 true
value.1 true
comment {
access ‘read write’
type BOOLEAN
count 2
}
}
control.4 {
iface MIXER
name ‘Left Input Boost Mixer LINPUT3 Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -9999999
dbmax 600
dbvalue.0 -9999999
}
}
control.5 {
iface MIXER
name ‘Left Input Boost Mixer LINPUT2 Volume’
value 7
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -9999999
dbmax 600
dbvalue.0 600
}
}
control.6 {
iface MIXER
name ‘Right Input Boost Mixer RINPUT3 Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -9999999
dbmax 600
dbvalue.0 -9999999
}
}
control.7 {
iface MIXER
name ‘Right Input Boost Mixer RINPUT2 Volume’
value 7
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -9999999
dbmax 600
dbvalue.0 600
}
}
control.8 {
iface MIXER
name ‘Right Input Boost Mixer RINPUT1 Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 3’
dbmin 0
dbmax 2900
dbvalue.0 0
}
}
control.9 {
iface MIXER
name ‘Left Input Boost Mixer LINPUT1 Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 3’
dbmin 0
dbmax 2900
dbvalue.0 0
}
}
control.10 {
iface MIXER
name ‘Playback Volume’
value.0 254
value.1 254
comment {
access ‘read write’
type INTEGER
count 2
range ‘0 - 255’
dbmin -9999999
dbmax 0
dbvalue.0 -50
dbvalue.1 -50
}
}
control.11 {
iface MIXER
name ‘Headphone Playback Volume’
value.0 100
value.1 100
comment {
access ‘read write’
type INTEGER
count 2
range ‘0 - 127’
dbmin -9999999
dbmax 600
dbvalue.0 -2100
dbvalue.1 -2100
}
}
control.12 {
iface MIXER
name ‘Headphone Playback ZC Switch’
value.0 false
value.1 false
comment {
access ‘read write’
type BOOLEAN
count 2
}
}
control.13 {
iface MIXER
name ‘Speaker Playback Volume’
value.0 127
value.1 127
comment {
access ‘read write’
type INTEGER
count 2
range ‘0 - 127’
dbmin -9999999
dbmax 600
dbvalue.0 600
dbvalue.1 600
}
}
control.14 {
iface MIXER
name ‘Speaker Playback ZC Switch’
value.0 false
value.1 false
comment {
access ‘read write’
type BOOLEAN
count 2
}
}
control.15 {
iface MIXER
name ‘Speaker DC Volume’
value 5
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 5’
}
}
control.16 {
iface MIXER
name ‘Speaker AC Volume’
value 5
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 5’
}
}
control.17 {
iface MIXER
name ‘PCM Playback -6dB Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.18 {
iface MIXER
name ‘ADC Polarity’
value ‘No Inversion’
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 ‘No Inversion’
item.1 ‘Left Inverted’
item.2 ‘Right Inverted’
item.3 ‘Stereo Inversion’
}
}
control.19 {
iface MIXER
name ‘ADC High Pass Filter Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.20 {
iface MIXER
name ‘DAC Polarity’
value ‘No Inversion’
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 ‘No Inversion’
item.1 ‘Left Inverted’
item.2 ‘Right Inverted’
item.3 ‘Stereo Inversion’
}
}
control.21 {
iface MIXER
name ‘DAC Deemphasis Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.22 {
iface MIXER
name ‘3D Filter Upper Cut-Off’
value High
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 High
item.1 Low
}
}
control.23 {
iface MIXER
name ‘3D Filter Lower Cut-Off’
value Low
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 Low
item.1 High
}
}
control.24 {
iface MIXER
name ‘3D Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 15’
}
}
control.25 {
iface MIXER
name ‘3D Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.26 {
iface MIXER
name ‘ALC Function’
value Off
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 Off
item.1 Right
item.2 Left
item.3 Stereo
}
}
control.27 {
iface MIXER
name ‘ALC Max Gain’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
}
}
control.28 {
iface MIXER
name ‘ALC Target’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 15’
}
}
control.29 {
iface MIXER
name ‘ALC Min Gain’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
}
}
control.30 {
iface MIXER
name ‘ALC Hold Time’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 15’
}
}
control.31 {
iface MIXER
name ‘ALC Mode’
value ALC
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 ALC
item.1 Limiter
}
}
control.32 {
iface MIXER
name ‘ALC Decay’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 15’
}
}
control.33 {
iface MIXER
name ‘ALC Attack’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 15’
}
}
control.34 {
iface MIXER
name ‘Noise Gate Threshold’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 31’
}
}
control.35 {
iface MIXER
name ‘Noise Gate Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.36 {
iface MIXER
name ‘ADC PCM Capture Volume’
value.0 230
value.1 230
comment {
access ‘read write’
type INTEGER
count 2
range ‘0 - 255’
dbmin -9999999
dbmax 3000
dbvalue.0 1750
dbvalue.1 1750
}
}
control.37 {
iface MIXER
name ‘Left Output Mixer Boost Bypass Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -2100
dbmax 0
dbvalue.0 -2100
}
}
control.38 {
iface MIXER
name ‘Left Output Mixer LINPUT3 Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -2100
dbmax 0
dbvalue.0 -2100
}
}
control.39 {
iface MIXER
name ‘Right Output Mixer Boost Bypass Volume’
value 5
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -2100
dbmax 0
dbvalue.0 -600
}
}
control.40 {
iface MIXER
name ‘Right Output Mixer RINPUT3 Volume’
value 0
comment {
access ‘read write’
type INTEGER
count 1
range ‘0 - 7’
dbmin -2100
dbmax 0
dbvalue.0 -2100
}
}
control.41 {
iface MIXER
name ‘ADC Data Output Select’
value ‘Left Data = Left ADC; Right Data = Right ADC’
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 ‘Left Data = Left ADC; Right Data = Right ADC’
item.1 ‘Left Data = Left ADC; Right Data = Left ADC’
item.2 ‘Left Data = Right ADC; Right Data = Right ADC’
item.3 ‘Left Data = Right ADC; Right Data = Left ADC’
}
}
control.42 {
iface MIXER
name ‘DAC Mono Mix’
value Stereo
comment {
access ‘read write’
type ENUMERATED
count 1
item.0 Stereo
item.1 Mono
}
}
control.43 {
iface MIXER
name ‘Left Boost Mixer LINPUT2 Switch’
value true
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.44 {
iface MIXER
name ‘Left Boost Mixer LINPUT3 Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.45 {
iface MIXER
name ‘Left Boost Mixer LINPUT1 Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.46 {
iface MIXER
name ‘Right Boost Mixer RINPUT2 Switch’
value true
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.47 {
iface MIXER
name ‘Right Boost Mixer RINPUT3 Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.48 {
iface MIXER
name ‘Right Boost Mixer RINPUT1 Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.49 {
iface MIXER
name ‘Left Input Mixer Boost Switch’
value true
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.50 {
iface MIXER
name ‘Right Input Mixer Boost Switch’
value true
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.51 {
iface MIXER
name ‘Left Output Mixer PCM Playback Switch’
value true
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.52 {
iface MIXER
name ‘Left Output Mixer LINPUT3 Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.53 {
iface MIXER
name ‘Left Output Mixer Boost Bypass Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.54 {
iface MIXER
name ‘Right Output Mixer PCM Playback Switch’
value true
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.55 {
iface MIXER
name ‘Right Output Mixer RINPUT3 Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.56 {
iface MIXER
name ‘Right Output Mixer Boost Bypass Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.57 {
iface MIXER
name ‘Mono Output Mixer Left Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
control.58 {
iface MIXER
name ‘Mono Output Mixer Right Switch’
value false
comment {
access ‘read write’
type BOOLEAN
count 1
}
}
}
Thanks,
could you confirm that you are using PI OS 64 bits and that you have used this installation ?
yes, using it 
don’t know how to solve it