tube ringing?


Hi folks, recently I replaced my Accuphase preamp with a CAT SL-1 Signature Mk III. My power amplifier is a Gruensch CSE II se and speakers are Soundlab A-1's. Speaker cable is Cardas Golden Cross. First I have to say that I hear a significant improvement over the Accuphase and I think it is a matter of pre/poweramp matching. The sound is quite good now but... with female voices for example Barbara Streisand I hear that the 600-800Hz region is emphasized. It reminds me of some ringing. Could this be ringing of the tubes inside the CAT? Or is it just room acoustics thing?

Chris
dazzdax

Showing 2 responses by samhar

Is this a hollow sound to the voices like they are in a tunnel ? If you cup your hands say and hold the word hello then then bring your hands together from each side of your mouth does this create a similar sound? If so I had the same problem and started moving my speakers away from the back wall until I felt the voices sounded natural.
Dazzdax I took Newbee's and Audphile 1's advice and changed tubes in the pre and that was where the bulk of my problem was, Valvo ECC88 replaced by Amperex US PQ 6922. This changed the nature of the sound not just reducing a unnatural "Slightly thin sounding vocals with more air than body". Thank you both it was the proper diagnosis in my case!!!