Help. System sounds thin and bright or harsh


Hope this isn't redundant tried to post in Tech Talk

Just moved my system to a new home/sound room and it still sounds harsh and a bit thin despite supposedly "warm" sounding Harbeth 30.1 speakers. This issue is not new and I had put the blame on the old listening room.  Can't figure out what the problem is. I listen loud at 80dcbl or higher and sit nearfield about 8 feet from the speaker plane. (sound is thin and bright from afar as well) I have experimented in both homes with speaker placement, toe-in and the like. Speakers are placed a lil over 3 feet from the rear wall and about two and a half feet from side walls.  I feel something is off. Perhaps a component or two that is known to be tipped up in the highs and a lil bass shy?? Also, I leave all solid state components fully powered up 24/7. (not the tubes)

System:

Modwright/Oppo BDP 105 disc player  (all mods with tubed power supply and pricey NOS tube upgrades throughout)  Looking to replace once the harshness/bright issue is nailed down.

Parasound JC2 Preamp

Pass Labs X250.5 Amp

Harbeth 30.1 stand mount speakers

Puritan Labs PSM 156 power conditioner. (less "edgy" sound with it in system)

System is run all balanced with fairly costly Cardas interconnects.

All input is welcome. Thanks in advance.

Happy listening.

 

 

cymivka
Post removed 

I have 0 to contribute but I like this thread for my learning. It's weird that you have these awesome components and experience these issues. I would say synergy if I was as smart and knowledgeable as ghdprentice.

I hope it will work out for you without throwing more money at it.

Do this just for grins to see if it’s a room treatment issue. Drag some mattresses from adjacent rooms into that room and place them against the wall and see if that makes a difference. I’m not suggesting this as a cure but to determine if it’s the room itself that is the issue. It may or may not be a big factor in what we’re talking about.

Andrew Jones tells a story about doing this at an audio show where they were stuck in hotel rooms that had terrible acoustics to do their demos. He said that they were voted the best sounding room in the show. They just asked room service for extra mattresses and placed them around, experimented and their end result apparently was quite amazing.

Not a permanent fix in any way but will certainly tell you something important.

I fully intend to use room treatments. already using cloth at first reflection points on side walls.  Used dedicated treatments before to try and tame Harbeth slh5's with boomy bass in my old listening room.  (ended up way overdamped, got rid of all the devices to start over) I feel that I should be able to get to a decent basis point with the overall sound before buying pricey treatment options that, in my mind, should be a means of fine tuning the sound.(keep it minimal) It was my experience that room treatments did NOT have instant or dramatic impact on the overall sound. This new room could prove totally different on that score, who knows.

Meantime, think I need to try a different pre-amp and send the JC2 out for a check up and possible service. Modwright/Oppo balanced outs straight into Pass Labs X250.5 amp sounds smoother than before but not robust enough, hitting variable volume levels in the upper 50's to mid 60's out of 100 and there's too much missing.

There's been lots of talk about using a pair of subs with the 30.1's. I am open to the idea but wonder since the room is wide open behind the listening position that I might get away with 40.2's and avoid trying to sync subs.  (did not like my SLH5's) Common sense tells me that's not likely.  Loft is 13' 2" wide with side walls extending 11 feet before opening up to a very distant upstairs back wall. I sit about 9 feet back from the front wall or where the speakers are. Ceiling is vaulted 10 to 11 feet high.  I feel the big Harbeths would be too weighty in that set up but certainly would warm things up. One can dream.