Modwright Oppo 105

in my response , i mentioned some suggestions. i have tried several sylvanias, of different vintage, audio aero, ge, tungsol, brimar and rca.

as i said,if you want warmth get a brown base rca.

consult a tube seller to ascertain the propper vintage. older tubes (50's and 40's) are generally warmer than later tubes (late 60's and beyond).

i am very pleased with the use of the brown bas rcas. i also liked an early tungsol.

the brimar, although not as warm, is balanced as to frequency response, with enough resolution for my taste, but not hot in the treble. it has extension in the base, but i find the rcas give me more bloom and have a more classic tube sound.

try experimenting with tubes. if i were you i would stay away from ge and sylvania. i have not tried mullard (very pricey), but they have an excellent reputation.

I'm not too keen on having to spend more money on different tubes just yet. I need to talk to Dan first, for one thing. Could people suggest tube sellers, so I'll have that info when I'm ready, though? I have no idea where to get them.
Thanks!

I have the MW Oppo 83 and I have to say that what you are describing sounds like a technical issue. My Oppo sounded very full, warm, and robust with killer bass right at the start. I think you are on the right track with calling Dan as your first step. In the mean time, see if you can isolate the problem by trying different sources and seeing if there is a difference. Try different cables (both IC's and speaker cables), try different tubes, etc. Double check the initial settings in Oppo set up screen. Make sure the latest firmware is installed.

For tube rolling options, I tried the Mullard and found it to be a big improvement over the stock Russian tube it came with. The Sophia Electric had a better synergistic match with my rig because it sounded more open, extended and clear with some loss of warmth. You can buy these direct from Sophia Electric- I think they were $200 for the pair. The nos Mullards are more difficult to find, but they pop up on Audiogon regularly. They can be spendy depending one which ones you get.

Jfz I have the Modwright Sony 5400 and am using the Sophia tubes in the player and the Create Audio 5AR4 in the power supply. I replaced a RCA (Mullard) with the Create tube in the power supplay and like it a little better than the RCA. I have used Vingage Tube Services in Rockford, MI. in the past for tubes with excellent results. It sounds like there is an issue with the player.

Hi, this is Dan Wright. I know exactly what is wrong, as I sent out two units on the same day, your unit and one that went to Seattle. I DID wire them both out of phase in one channel and this is EXACTLY what you are hearing.

I guess I was having a bad day...sorry, human after all... ;).

I will arrange to have the Player Only, brought back to our shop IMMEDIATELY, on our account, and resolved for you promptly. The way to prove that this is the case, and hear the player as it SHOULD sound, is to reverse the polarity in ONE of your speaker cables. Either amp or speaker end, just swap black and red leads. TURN OFF AMP FIRST!

I am certain that this is the case, as the two units were worked on by me PERSONALLY and shipped on the same day! I didn't catch it as I was listening for something else and it was a VERY busy week.

I sincerely apologize for the inconvenience and I assure you that this will be resolved promptly and completely at our expense.

Sincerely,

Dan Wright