Last Critical Tweak… how to quell occasional high harshness…?


Dear Audiogon Community,

 

I am so impressed with the insight and obsession we all share with this musical alchemy of electrons. I write to address a simple problem through as simple (and hopefully relatively inexpensively) as possible… though before such elegant maneuvers, an overly verbose and fussy description:

 

 

Harshness in the highs…. Trumpets and some vocals now make my ears shrill at times. My aging ears! It is so close to musical bliss, but this slight edgyness must be quelled!

 

This song, horns seem to shatter. 

This song, vocals seem to pierce. 

 

I recently leveled an entirely new system. My last tweak was to move my main gain tube to Mullards, and the Brimar NOS tubes to the outer gain location. The mullards afforded a richness and expansiveness, a forward mid and elegance, but introduced the occasional shrillness which I seek to quell. 

 

My musical electron dance is as follows on the streaming side:

 

Nagra Streamer —> Audio Zen MC2 Coax —> Halo Audio Spring 2 Level 3 Kitsune —> Duelund 16 GA Interconnect —> Prima Luna Dialogue Premium HP —> Brimar NOS outer tube and Mullard NOS main gain tube —> Gold Lion KT77 Power tubes —> Duelund 16GA Speaker wire —> Pure Audio Project Duet Horn’s with a gold silver oil Mundorf Cap upgrade —> Duelund wire to the horn and the 15” Woofer. 

 

Fun yes! Devine! But how to quell this one last occasional shrillness?

 

Thoughts:

-Speaker Wire to 12 GA

-DAC - Amp Interconnect changed to something that mellows out the shrill

-Main Gain tube upgraded from a Mullard NOS to something else… (I believe there was a slightly higher grade Mullard?)

-Nagra Stream - DAC Coax cable upgraded to something mellower….?

 

Open to any and all suggestions! Thank you so much for your insights. 

 

R. 

whyrichard

Certainly major things like room, hearing critical and first things to look to. And assuming the general presentation is to OP's satisfaction he's inquiring about specific anomalies which with some fine tuning could be taken care of. I keep a wide variety of tuning devices such as footers, different stand configurations, cables, etc on hand for just these occasions. There have been some valid suggestions over the thread, up to OP to make informed decision. Unfortunately, sometimes only direct experience will provide the correct solution, one may make mistakes along the way, this not failure, rather a learning experience.

For my PAP Trio15 Horn1 speakers I did this for that:

1. Swapped in Clarity CSA caps in x-over. IMO, smoother top end w/o losing detail.

2. ICs: Silnote Morpheus Reference Classic II Series.

Both tweaks have raised my already terrific PAP speakers to  magical music makers.

OP

I think you should look into those caps. you mentioned that you have the silver Mundorff. I used that in a DIY build a few years ago, and we notice that it seems to accentuate the highs. we change to non-silvers and shrillness was subdued. unfortunately, the owner wanted the accentuated highs 

Never the less it's still good to see an audiologist to get an audiogram and find out what frequencies you have hearing loss.. sound can now be amplified at certain frequencies much better than in the past.you can still experiment with everything else.enjoy the s3arch

Sometimes, adding a ’warm’ cable acts as a band-aid, a palliative for the HF issues. it might dampen the vibrancy and articulation of the music.  It doesn’t solve the root cause of the distortion.  I did that many years ago.  Moved on.