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A certain song triggers HP ERR of the DX3 Pro+

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May 31, 2022
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Hi, this is a bit of a curious observation i made.

I use a Hifiman HE400SE with a DX3 Pro+ and the two work together quite nicely, however everytime i try to listen to the song


even at relatively low volume, the amp shuts down with HP ERR


Doesn´t matter if the source is Tidal or Spotify, Amazon Music however is much lower Volume to begin with

Topping already adressed the Issue with a FW Update, V1.23, but my unit is new and came with that version.

what is going on with that song? i can listen to other stuff at perceived higher volume levels, and this issue is reproduceable, happens everytime at -9.5db High Gain
 
OP
S
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May 31, 2022
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so it seems its an issue with low frequencies below 20hz, i applied a highpass filter 10hz Q 0.7 that resolved the issue.
combined with Amirs EQ it looks like this

High pass 10hz Q 0.7

Peak 20hz +6db Q 1.0

Peak 37hz +1.8db Q1.8

Peak 1950hz +4.5db Q 3.0

Preamp -6.5db
 
OP
S
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May 31, 2022
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Read chapter “31.15 Digital DC Protection” page 68 and 69 in the RME ADI-2 DAC FS manual for an explanation.

man, this is a can of worms XD. I appreciate the link, and i´m glad something relatively convenient, like a HP filter can circumvent this. It´s weird that DACs don´t just offer this option by default
 

Frenchie

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Sep 7, 2022
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Hello All i have solved my Hp Err issue by running equalizer APO and by using the filters that OP used to fix the same issue. im just posting this so less audio savy people can find this. the D.B gain settings can be left to user preferance however.
Screenshot_2.png


Link to Equalizer APO:




Hope you found this useful,

Frenchie


P.S: i use this for gaming, i had this issue when playing escape from tarkov and it fixed it without screwing with base game audio
 
Last edited:

asrUser

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Apr 11, 2022
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It's only a workaround, but the manufacturer should still fix this.
 
OP
S
Joined
May 31, 2022
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Hello All i have solved my Hp Err issue by running equalizer APO and by using the filters that OP used to fix the same issue. im just posting this so less audio savy people can find this. the D.B gain settings can be left to user preferance however. View attachment 229299

Link to Equalizer APO:




Hope you found this useful,

Frenchie


P.S: i use this for gaming, i had this issue when playing escape from tarkov and it fixed it without screwing with base game audio
I have trouble understanding, why you post EQ settings with low frequency gain, without adjusting preamp, when my provided EQ was perfectly fine.

Don´t add gain without lowering preamp, especially as far as bass is concerned
 
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