128x128

mattzack2

Responses from mattzack2

Better sound from 6550 or kt88 tubes in Jadis amp?
hmmmm.....I have a very early Defy 7 (s/n 213). It was originally designed to use to use the EL34 tubes. It was modified in '91 to accept 6550 and KT88's.I also have a Jadis Orchestra Reference that I am running Gold Lion reissues on.The JOR sound... 
Can anyone help me biasing a Jadis Defy 7?
I replaced all 12 resistors with Jadis supplied 180 ohm resistors that came with the amp.The Gold Lions still do not bias properly and measure differently from each other by more than double in some cases when the pots are set for minimum.I put th... 
Can anyone help me biasing a Jadis Defy 7?
Almarg -I found something... possible the root cause of my biasing problem.I found a bad resistor labeled 5w150 ohm j under one of the tubes. I measure the othe 11 and they have ground on one side and 150 ohms on the other. It looks like this one ... 
Can anyone help me biasing a Jadis Defy 7?
I keep swapping and tweaking.... the sound is improving, but I still have not reached the magic.I am going to bed soon, but I thought that it might be the combination of 12au7 and 12ax7 tubes that might be causing some of the difficulties.Is anyon... 
Can anyone help me biasing a Jadis Defy 7?
Thanks Al...Speakers are attached.Tracing the connections of the resistor might require some help. The colors on the resistor are next to impossible to see.... very brown looking. But the voltage readings of other neighboring resistors is much hig... 
Can anyone help me biasing a Jadis Defy 7?
My thoughts are that Da-Hong Seetoo performed a mod to this amp that brought it back to the regular way of biasing between chassis and fuses. 
Can anyone help me biasing a Jadis Defy 7?
Yes.... it should be irrelevant. I cannot get any of the tubes to read at 33 mv. So at this point, I am thinking that the tech notes that I have from Da-Hong Seetoo may reveal that the modification he performed on 3/7/91 updated the amp to be bias... 
Can anyone help me biasing a Jadis Defy 7?
Still having a rough time shifting these tube around and trying to find some balance. The voltages are ranging from in the 3 volt range up to the 7 volt range..... it seems that when I finally get 6 tubes close to 5 volts, the remaining tubes I ha... 
Can anyone help me biasing a Jadis Defy 7?
Well... I spoke with Brooks Berdan and he shed a whole new light on the particular Defy. It has the s/n 213 and it turns out that Jadis built all defy-7 amps from something like s/n 200 to s/n 399 a little bit different.On these amps, you do not b... 
looking for easy tester for kt-88, 12ax7, 12au7
Thanks guys....Pete Miller's site is a gold mine of info. 
Thanks to Audiogon and friends
You are in the right place for your quest to make stereo king again. Lots of really great folks in here, and no lack of opinions, sometimes to the point of emotional chest bumping. It's a pretty cool place.I hope you enjoy your audio adventure as ... 
Preamp for Jadis Defy 7 mk2 recommendations
I am going to retube my Defy with new reissue Gold Lions, adjust the bias and see if I can fine tune this thing.Right now I am still listening to my JOR and if I can get the Defy sound a little stronger than the JOR, I will be a very happy man. 
Thanks to Audiogon and friends
Our new fellow audiophile is just discovering what Audiogon is all about. Suggesting that he start out by building his own speakers might sound pretty heavy duty to a lot of people just getting into great hifi. It is a great idea though.I think he... 
Where to get hi end cables reterminated
I tried to send them back to the seller. No luck there and Agon ruled on the dispute as the seller refund 60 bucks back, won't even pay for one wbt connector, and the seller ignored the ruling to even refund the 60 bucks. Extremely disapointed wit... 
Thanks to Audiogon and friends
Welcome aboard !And congrats on discovering Audiogon. I am also a relatively new member and I really fell in love with music and sound since I first came here. I hope you enjoy this place as much as I do. I visit every day.Especially since you are...