Welcome, Guest
Username: Password: Remember me
NOTE: This is a "Community" forum. Please be mindful that community members are here to help as part of a community effort. We therefore appreciate your effort in keeping this forum a happy place!

If you have a specific issue (e.g. hardware, failure) and want help from our support team, please use our tech support portal (Support menu - > Contact Us).
Thanks a lot of your help in making a better community.

TOPIC: Whistling noise when using SHD (4300Hz)

Whistling noise when using SHD (4300Hz) 2 months 3 weeks ago #43345

  • closer2000
  • closer2000's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 4
  • Thank you received: 1
  • Karma: 0
Hi,
I have noticed a constant whistling tone in my speakers at around 4300Hz when using my SHD regardless of input source. I have previously used an active speaker in the top (HEDD05) but not noticed this tone before. My new speakers are passive and driven by a NuPrime ST-9 connected to the SHD with XLR cables.
Would welcome any ideas about how to solve this.
Best,
/Stefan
The administrator has disabled public write access.

Whistling noise when using SHD (4300Hz) 2 months 3 weeks ago #43355

  • john.reekie
  • john.reekie's Avatar
  • Offline
  • Platinum Boarder
  • Posts: 3505
  • Thank you received: 1509
  • Karma: 138
That's pretty weird. If it were me I'd identify whether it happens regardless of input, and whether volume changes anything. If it happens even with nothing is connected to the SHD inputs and it doesn't happen when the SHD is disconnected from the NuPrime then perhaps take an RTA of it and open a support ticket?
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
The administrator has disabled public write access.
The following user(s) said Thank You: closer2000

Whistling noise when using SHD (4300Hz) 2 months 1 week ago #43789

  • closer2000
  • closer2000's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 4
  • Thank you received: 1
  • Karma: 0
Partially solved by using RCA cables instead of XLR! A bit strange since balanced cables should be more resistant to noise and hum. It is only my ribbon tweeters that pick up the tone (4300 Hz). My AMTs do not. Well, good enough for me anyway.
The administrator has disabled public write access.

Whistling noise when using SHD (4300Hz) 1 month 2 weeks ago #44153

  • devteam
  • devteam's Avatar
  • Offline
  • Administrator
  • Posts: 8592
  • Thank you received: 1065
  • Karma: 157
@closer2000

That's extremely weird to say the least.. We're talking of circa 120dB SNR on that unit with no peak anywhere near that frequency.. we've also never heard of any issues of noise with the SHD... I think it's generated by something else somehow... Did you start a tech support tix with our team already?

DevTeam
MiniDSP, building a DIY DSP community one board at a time.
The administrator has disabled public write access.

Whistling noise when using SHD (4300Hz) 1 month 2 weeks ago #44162

  • closer2000
  • closer2000's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 4
  • Thank you received: 1
  • Karma: 0
No, did not open a ticket. Since the 4300Hz tone only appears with my ribbon tweeters and via XLR out from the SDH to a pair of bridged NuPrime STA-9 I think this is too unique. RCA or XLR to a pair of HEDD05 (studio monitors with AMT treble and builtin amplifiers) generates no tone. However listening to the SHD itself in a very quite environment there seems to be a tone around 4300Hz. Maybe it is generated by the display; would love to have an option to switch off the display

Anyway, I am happy as a lark for my SHD. It really lifted my listening experience and it really is fun to tinker around with filters and levels and of course the mighty Dirac algorithms. Best audio investment since I bought a pair of Jordan Watts speakers in the mid-70s (my first speakers ever)!
The administrator has disabled public write access.
The following user(s) said Thank You: devteam

Whistling noise when using SHD (4300Hz) 1 month 2 weeks ago #44237

  • devteam
  • devteam's Avatar
  • Offline
  • Administrator
  • Posts: 8592
  • Thank you received: 1065
  • Karma: 157
Thanks for the feedback!
I don't think that it's the OLED (else we'd see it in the measurement on an Audio Precision), aka some peak.
Have you tried to use XLR to XLR but not have the shield connected on one side? That might do the trick if you have some shielding issue.. Just a thought.

Glad to hear that you're enjoying your unit! Thanks a ton for your nice feedback. It means a lot to us.. :-) If you get a chance to write a little review on product page, we'd be super grateful.. :-)

DevTeam
MiniDSP, building a DIY DSP community one board at a time.
Last Edit: 1 month 2 weeks ago by devteam.
The administrator has disabled public write access.
Moderators: devteam