MiniDSP Flex HTx

[terryforsythe]

I’m continually getting an “imprecise measurement” notification when trying Dirac. I’m using a UMIK-2. Im in contact with MiniDSP and Dirac but its all taking a bit too long.

Just curious if anyone else is getting this issue?

FYI I dont get the error if I use my inbuilt laptop mic or if I use my wireless (not bluetooth) gaming headset mic.
I even set it up with different speakers and amps (2.1).
There a million settings it could be and I think Ive tried numerous combinations (50?). I’ve done all the troubleshooting suggestions.
Anyone actully fixed this problem?
cheers

Uh oh. Mine is due to arrive Monday, and I also ordered the UMIK-2. I hope the issue gets resolved.

I had a UMIK-1 with my SHD. Never had any problems with it.

I almost ordered the UMIK-1 again, but figured I could use the UMIK-2 for other things beyond just REW and Dirac.

 

[dweeeeb2]

Uh oh. Mine is due to arrive Monday, and I also ordered the UMIK-2. I hope the issue gets resolved.

I had a UMIK-1 with my SHD. Never had any problems with it.

I almost ordered the UMIK-1 again, but figured I could use the UMIK-2 for other things beyond just REW and Dirac.

Its more than likely something this noob is doing or a faulty mic. I’m hoping its me…

 

[vicenzo_del_paris]

When you got the error did it say high noise floor as well?

No, just that the measurement was imprecise.
In REW, noise floor was high.
Then I stopped the dishwasher in the kitchen (that was working quite very silently to me).
Did a calibration again and dirac error went away (and noise floor much flower in REW)

 

[sweetchaos]

Website shows:

STOCK UPDATE(18/01/2024): All backlog has now shipped. Thanks for all your patience. All orders will now ship within 1-3days from order.

MiniDSP should have no issues sending a sample to Amir for review now.

 

[markus]

Website shows:


MiniDSP should have no issues sending a sample to Amir for review now.

Maybe they don't want to? Amir hasn't been exactly fair to manufacturers in the past. See Monoprice HTP-1.

 

[RosalieTheDog]

This is what I do with my Flex HT.
- Preset 1 for music stereo sources where I route left and right inputs to my mains output (with HPF) and my 2 subs outputs (with LPF)
- Preset 2 for video sources providing 5.1 LPCM, where each input channel is routed its matching out (with filters specified in LFE management tab, LFE input routed to both subs output)
- Preset 3 for video sources providing 2.0 LPCM applying same logic as preset 1 with additional filters, gain and routing for redirecting L+R also to central channel.

I have a slightly off-topic question about that third preset. I saw this blogpost of Creekaudio explaining a 'do-it-yourself' 3.1 system for 2.0 input using a MiniDSP, with L+R highpassed and lowpassed signal sent to a centre channel. (https://deercreekaudio.com/tech-blog/f/a-simple-tv-centric-31-high-fidelity-home-theater-system) Do you mean something similar? How is it working out? Was it easy to integrate the centre channel and do you find it provides a benefit for video sources?

 

[vicenzo_del_paris]

I have a slightly off-topic question about that third preset. I saw this blogpost of Creekaudio explaining a 'do-it-yourself' 3.1 system for 2.0 input using a MiniDSP, with L+R highpassed and lowpassed signal sent to a centre channel. (https://deercreekaudio.com/tech-blog/f/a-simple-tv-centric-31-high-fidelity-home-theater-system) Do you mean something similar? How is it working out? Was it easy to integrate the centre channel and do you find it provides a benefit for video sources?

I didn't know that blog post but basically that what I do in my preset 3 for the center center with different slopes and filters values. I also have a negative gain for center channel output not be too loud.

 

[mdsimon2]

For those using a Flex HT / HTx with an Apple TV, are you aware of any 7.1 content on the Apple TV that actually has audio on the rear channels?

I've been playing around with a DIY setup using a 7.1 HDMI to I2S audio extractor and can get audio on the rear channels when I play from a computer but have not been able to see anything on the rear channels with the Apple TV. Of course, I really only see tracks listed as "5.1" or "Dolby Atmos" so not sure a pure 7.1 example exists.

Michael

 

[markus]

For those using a Flex HT / HTx with an Apple TV, are you aware of any 7.1 content on the Apple TV that actually has audio on the rear channels?

I've been playing around with a DIY setup using a 7.1 HDMI to I2S audio extractor and can get audio on the rear channels when I play from a computer but have not been able to see anything on the rear channels with the Apple TV. Of course, I really only see tracks listed as "5.1" or "Dolby Atmos" so not sure a pure 7.1 example exists.

Michael

Most (all?) Atmos content plays the 5.1 bed if you have a device with just 8 PCM channels connected. You can get 8 channels with 7.1 DD+ files though.

 

[mdsimon2]

Most (all?) Atmos content plays the 5.1 bed if you have a device with just 8 PCM channels connected. You can get 8 channels with 7.1 DD+ files though.

Do you have an example of such a file that is available via an Apple TV streaming service? Not a huge deal either way, just interested in testing. I haven't built a multichannel system yet, but if/when I do it will almost certainly be 5.1.

Michael

 

[Joffy1780]

For those using a Flex HT / HTx with an Apple TV, are you aware of any 7.1 content on the Apple TV that actually has audio on the rear channels?

I've been playing around with a DIY setup using a 7.1 HDMI to I2S audio extractor and can get audio on the rear channels when I play from a computer but have not been able to see anything on the rear channels with the Apple TV. Of course, I really only see tracks listed as "5.1" or "Dolby Atmos" so not sure a pure 7.1 example exists.

Michael

If you play an Atmos track with Dolby Atmos set to off in the Apple TV audio settings it will output 7.1 PCM.

 

[mdsimon2]

If you play an Atmos track with Dolby Atmos set to off in the Apple TV audio settings it will output 7.1 PCM.

I am currently using an Apple TV HD which does not support Atmos so there is no such setting. I do have an Apple TV 4K but it is in my main system and would need to pull it (which I will do). As I mentioned, regardless of whether a title is reporting the audio as 5.1 or Dolby Atmos there is no content on rear channels.

Michael

 

[Joffy1780]

I am currently using an Apple TV HD which does not support Atmos so there is no such setting. I do have an Apple TV 4K but it is in my main system and would need to pull it (which I will do). As I mentioned, regardless of whether a title is reporting the audio as 5.1 or Dolby Atmos there is no content on rear channels.

Michael

You could play a downloaded file through VLC Media player.

 

[AudioJester]

Might have missed this, but can you load seperate convolution filters for each channel in the device itself?

 

[mdsimon2]

Might have missed this, but can you load seperate convolution filters for each channel in the device itself?

Flex HT / HTx do not support any user defined FIR filtering.

Michael

 

[dweeeeb2]

In regards to my "Imprecise Measurement Error" an old version of Dirac v3.4.4 fixed it.

 

[fernando.yang]

For those using a Flex HT / HTx with an Apple TV, are you aware of any 7.1 content on the Apple TV that actually has audio on the rear channels?

I've been playing around with a DIY setup using a 7.1 HDMI to I2S audio extractor and can get audio on the rear channels when I play from a computer but have not been able to see anything on the rear channels with the Apple TV. Of course, I really only see tracks listed as "5.1" or "Dolby Atmos" so not sure a pure 7.1 example exists.

Michael

Hi Michael, are you using Apple TV 4K? The audio output can be i multichannel PCM and Flex HT/HTX handle it properly?

Thanks.

 

[mdsimon2]

Hi Michael, are you using Apple TV 4K? The audio output can be i multichannel PCM and Flex HT/HTX handle it properly?

Thanks.

I am not. I am using an HDMI to I2S extractor in to a RPi 5 running CamillaDSP. I have also been testing so far with an Apple TV HD, although I do plan on testing with an Apple TV 4K. I believe others have successfully used the Flex HT / HTx with the Apple TV.

Michael

 

[fernando.yang]

I am not. I am using an HDMI to I2S extractor in to a RPi 5 running CamillaDSP. I have also been testing so far with an Apple TV HD, although I do plan on testing with an Apple TV 4K. I believe others have successfully used the Flex HT / HTx with the Apple TV.

Michael

Thank you for your information!

 

[Cougar80]

Can any owners please provide first impressions of the HTx? How are you liking it? Any issues? Thank you.