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What cause tweeters hiss ?

I could hear hiss sound when i place my ears close to both tweeters (ATC SCM 11 speaker) when Denafrips Ares II is connected with interconnect (XLR or RCA) during power on/off/standby. Hiss sound disappear only until power cord is disconnected.

At first I thought it’s amplifier (Accuphase E280), then I bypass Ares II and connecting Sony CD player with RCA out to amplifier, no hiss can be heard from tweeters.

Due to curiosity, i connected my Topping D90 with similar arrangement, I could hear hiss sound until I unplugged power cord.

During the above test, music is stopped, amplifier is turned on but at zero volume. All my music source, DAC, amplifier are from the same power source/circuit with Novaris Power Filter.

Can’t hear the hiss at my usual listening spot though.

What could be the culprit that create this hiss, DAC ? Grounding Issue?

 

auronthas
auronthas OP
79 posts
 

I do check and isolate one by one interconnect  as well audio equipment connected to my integrated amplifier .  As for Ares II, it was not recommended to have both RCA and XLR to be connected due to the R2R design with high output impedance.  Thus I have dropped and removed the RCA cable , left XLR cable. 

The hiss remains until I removed my Cardas XLR cable from  Ares II to Accuphase E280 while both DAC and integrated amp power on.  Then I used another pair of cheap Ugreen XLR cable to test.  The hiss went dead silent. 

I just read through this article and it explains the hiss, buzzing could be due to broken cable. 

 

oddiofyl's avatar
oddiofyl
3,493 posts
 

Plug in Air Fresheners can cause tweeter hiss.   I had a weird noise coming through speakers and traced down to that.   

itsjustme
681 posts
 

I have absolutely no idea under what mechanism bad XLR cables would cause hiss.  At most, better shielded cables would reduce noise.

Nor do I.  Buit the entire question as posed is a mystery.

stringreen's avatar
stringreen
6,386 posts
 

Try turning off ceiling fans, tv's refrigerator, etc. to try to isolate if the issue is a gremlin in your house.

nonoise's avatar
nonoise
10,638 posts
 

Bad performances give rise to hissing, no?

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