Faint cracking noise when playing low frequency bass

#22

Hi ROSELOA,

I did the experiment during weekend, experimented with Pre Out Level Setting of different values and each time I changed the value I did press the APPLY button on the top right corner of the screen. Below are my results:

Source: TIDAL Eagles - The Long Run MQA 192 kHz, play volume = 68

Pre Out Setting value (balanced) = 100 mV, NO cracking noise was heard.
Pre Out Setting value (balanced) = 200 mV, NO cracking noise was heard.
Pre Out Setting value (balanced) = 300 mV, NO cracking noise was heard.

Pre Out Setting value (balanced) = 400 mV, CRACKING NOISE WAS HEARD.
Pre Out Setting value (balanced) = 500 mV, CRACKING NOISE WAS HEARD.
Pre out Setting value (balanced) = 1000 mV, CRACKING NOISE WAS HEARD.
Pre Out Setting value (balanced) = 2000 mV, CRACKING NOISE WAS HEARD.

I did not try 3000 mV, 4000 mV and 5000 mV because the play volume was too loud.

As control experiment, I also did the following tests:

Source: TIDAL Ealges - The Long Run MQA 192kHz
Without Pre Out Level (i.e. OFF and APPLY), the cracking noise was heard at play volume 50.

Source: NAIM CD5XS, CD Pink Martini Sympathique, track 5 La Soledad
Without Pre Out Level (i.e. OFF and APPLY), the cracking noise was heard at the piano solo portion with play volume 48.

Also, I got additional inputs from Kinki Studio technical support, they said their XLR inputs (for EX-M7 Power Amp) are single-ended design. I am connecting RS150 to EX-M7 by a pair of XLR cables.

ROSELOA, what is your assessment with these information? I appreciate if you may suggest the next step. Thanks!

Thomas

#23

Hello,

Do you have the same noise when you play with RCA cable?
If so, how much volume is there no noise?

#24

Hi ROSELOA,

Good question, I am thinking this too. But I don’t have a pair of RCA cable, I need to buy a new pair and experiment with it. Let me go downtown to buy a new pair of RCA cable and try them out during this long weekend. I will report next week. Thanks a lot!

#25

Hi ROSELOA,

I am sorry to report late of the progress here. I changed from XLR cable to RCA cables. I tested many tracks and I do NOT think the problem resolved. I still hear noise. Noise is heard particular for the following conditions:

(1). High resolution tracks.
(2). Quiet music and loud music, that is during the introduction of a song when the loudness is increasing. I think it is related to the dynamic range.
(3). Noise heard for volume set at 50.

I would like your guidance. Thanks!

#26

Hi ROSELOA,

Please response! Thanks.

#27

Hi ROSELOA,

I appreciate if you may response to my problem, please. Thanks!

#28

Hi ROSELOA,

Do you have any updates regarding my problem described in this thread? Hope you come up with some suggestions. Thanks !

#29

Hi ROSELOA,

I have not heard from you since I reported that I changed my cable from XLR to RCA. Are you still following on my problem? I leave it to you but I would like to hear your conclusion of this chat, including you want to close it. Just to have a closure of my product experience with Rose, thanks!

#30

Hello @thomas.tse ,

I’m apologize for late reply.
I checked with engineer about your issue, but there’s no way of reproducing your issue.

Please send your RS150B to your distributor and better get a overhaul.