hum

  1. J

    Earthing sparks? (ft. Rega Schiit iFi miniDSP & Topping)

    First time poster :). I ran into a ground hum problem (very loud) in the following chain: Rega P1 TT ----> Schiit Mani/iFi Zen Phono (doesn't matter which one) ----> miniDSP 2x4 HD (rca in--rca out) ---->Topping PA 5 x 2* ----> DIY LXmini speakers. (*The RCA to TRS cables for interfacing the...
  2. P

    How to make XLR input on a power amplifier using Lundahl 1588

    Hi everybody, I need help making an XLR input on a regular single end amplifier. Since regular cable adapters wouldn't work, I decided using a transformer and already got the general purpose Lundahl 1588. I saw that they use them in some high end amplifiers. The reason I need XLR input is for...
  3. T

    Single ended to balanced to eliminate hum?

    Hello, this is my very first post here; what I like of this site is that pretty much of it is based on facts; of course opinions are valuable as long as their are reasonably backed by measures. I have a simple question and I thank any comment in advance: My audio chain runs single ended in...
  4. Mossshine

    Every new tube is noisy, am I unlucky or am I missing something?

    Hello, I have Darkvoice 336 SE tube amp connected to DT 1990 PRO and that I use all the time and I wanted to try some different tubes than my old trusty Sylvania 6SN7 GTB E6B ones so I bought one KenRad 6SN7GT (pricey little thing) and two PSVANE UK-6SN7 (ordered one but arrived as pair) KenRad...
  5. M

    Is my sE V7 dynamic mic faulty? Please help

    This is my first post. I have been trying to solve a hum (I think 50Hz) issue in my recordings for weeks now without success. My audio chain is sE V7 dynamic mic --> Behringer Ultragain Pro --> Focusrite 2i2 gen 2 --> PC Everything is on the same circuit (PC, monitors, pre-amp) and I am using...
  6. pma

    Mains related hum and noise in power amplifiers

    Mains related hum and noise in power amplifiers We have had some discussion in another thread https://www.audiosciencereview.com/forum/index.php?threads/class-a-vs-ab-do-they-really-sound-different.18415/post-910720 about the reason of higher residual mains related components hum in the...
  7. S

    Hum and hiss after connecting miniDSP SHD

    Hi all, After adding the SHD to my audio chain there is audible hum and hiss coming through the speakers. I added an audio file (no pun intended) so you can hear for yourself: Link to audio Previously I had another DAC without grounding that didn’t seem to add noticeable noise through my...
  8. mxlv900

    Presonus Eris E5 hum

    Hi everyone. I'm new to this forum so if I'm doing any of this wrong feel free to tell me. I bought a Topping E30 DAC to hook up to my pair of Eris E5. The problem is that I experience a fairly loud hum/buzzing sound. I hooked them up through some THX RCAs that I had lying around in the house...
  9. Mr. J

    THX 789 Buzzing Noise

    First off Hello, this is my first post on this forum. I'm not exactly new to ASR as I've been browsing for close to 2 years now. I figured now is a good time to make an account since I've really dived into audio this past year and I am really enjoying it. Anyway, I first noticed something with...
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