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1: Dynaco-Doctor Forum, RE: Mark III & JJ KT88 BLUE GLASS, a good matching for me (0.00)
Posted by dinatiz@alice.it on 2013-01-22, 23:33:55 (80.93.137.22)
Hi, OK, it's right!, I believe i need reformulate well what i write. I want post a positive feedback about my new buy, a matched quad of JJ KT88 BLUE GLASS. I live in Italy and I tried them on a resto .......
2: Dynaco-Doctor Forum, RE: Mark III & JJ KT88 BLUE GLASS, a good matching for me (0.00)
Posted by dinatiz@alice.it on 2013-01-22, 11:30:59 (79.31.37.224)
Effectively my post was not formulated correctly. I compared the tubes for first with a matched quad of 6550 made in PRC (those that I used previously), and after i compared overall sound results betw .......
3: Dynaco-Doctor Forum, Mark III & JJ KT88 BLUE GLASS, a good matching for me (0.00)
Posted by dinatiz@alice.it on 2013-01-21, 23:58:22 (80.93.137.22)
Hi to everybody i want post a positive feedback about my new buy, a matched quad of JJ KT88 BLUE GLASS. I live in Italy and I tried them on a restored stock pair of Dynakit Mark III. New P-782 power t .......
4: Dynaco-Doctor Forum, RE: Bias setting on MK3 (0.00)
Posted by dinatiz@alice.it on 2013-01-07, 08:42:12 (80.93.137.22)
Hi yes but if the Ohm's law is correct: V = R * I so 1,56V = 11,2 ohm * 0,14 A (140mA is the current of a pair of 6550) It's correct. Why the Bias should be less ??!?!? Regards Tiziano .......
5: Dynaco-Doctor Forum, RE: If your tester doesn't know what type of triode you are testing,,,,,,, (0.00)
Posted by dinatiz@alice.it on 2012-11-07, 04:37:38 (80.93.137.22)
I read the operating voltage on data sheet. It's a digital tester, It's the Tube Imp mini TT. It test Mutual Conductance, Gain, Ra and Ic. .......
6: Dynaco-Doctor Forum, RE: 7199 adapter for tube tester (0.00)
Posted by dinatiz@alice.it on 2012-11-06, 23:03:30 (80.93.137.22)
I read the operating voltage on data sheet. It's a digital tester, It's the Tube Imp mini TT. It test Mutual Conductance, Gain, Ra and Ic. .......
7: Dynaco-Doctor Forum, RE: I take it that your tester does not have a 7199 setting...... (0.00)
Posted by dinatiz@alice.it on 2012-11-06, 13:08:57 (80.117.216.49)
Every Pentode also works as triode. My tester don't know what kind of triode tube i'm testing. I think have to make and adaptor to change the pinout but also i should add a resistor between grid and a .......
8: Dynaco-Doctor Forum, 7199 adapter for tube tester (0.00)
Posted by dinatiz@alice.it on 2012-10-26, 05:34:16 (87.6.183.208)
Hi to every body I 've just bought a Tester to test the 12AX7 for my PAS-3X. Now i would like to make an adapter to plug in the 7199 in the Tester to test them also. I watched the 7199... the pin out .......
9: Dynaco-Doctor Forum, RE: Capacitor between 16 ohm and common terminal strip (0.00)
Posted by dinatiz@alice.it on 2012-02-09, 09:30:31 (87.21.186.36)
Hi It was a Disc capacitor, probably ceramic i think and it was a 10000pF cap. Thanks .......
10: Dynaco-Doctor Forum, RE: Capacitor between 16 ohm and common terminal strip (0.00)
Posted by dinatiz@alice.it on 2012-02-09, 08:34:44 (87.21.186.36)
hi, i have just removed. everythings seems to works ok. it‘s strange.i buyed my dynakit used,probably the privious user mounted them there. anyway thank you for your answer. Tiziano .......
11: Dynaco-Doctor Forum, Capacitor between 16 ohm and common terminal strip (0.00)
Posted by dinatiz@alice.it on 2012-02-06, 02:21:13 (80.93.137.22)
Funny i have found that on my ST 70 there is a capacitor between 16 ohm and common output terminal strip. These connection is not reported by user manual. It's a correct connection? Someone can tell m .......
12: Dynaco-Doctor Forum, RE: Rubber pins (0.00)
Posted by dinatiz@alice.it on 2012-01-03, 00:49:54 (79.52.177.80)
Hi, i live in italy, so i can't tell you in which store but I have chosen the one with air chamber inside for ST 70 and the filled one for PAS3X. Anyway i try to attach picture of them. I use also .......
13: Dynaco-Doctor Forum, Rubber pins (0.00)
Posted by dinatiz@alice.it on 2012-01-02, 04:46:23 (79.55.5.169)
hi folks and happy new year to everybody. I just added 4 rubber stopdoor under Pas 3X and ST 70 in place of graphite pins. The result was great, more dephinite mid frequencies, better voices and every .......
14: Dynaco-Doctor Forum, RE: Help For Volume Up & Down (0.00)
Posted by dinatiz@alice.it on 2011-11-05, 02:01:00 (79.31.45.106)
Hi, the problem seems to be 12x4 on pas 3x. I changed it and now seems to be ok. Unfortunatly i have not a tube tester to test my tubes, can you suggest me one that it isn't too much expensive? I have .......
15: Dynaco-Doctor Forum, Help For Volume Up & Down (0.00)
Posted by dinatiz@alice.it on 2011-10-22, 05:16:20 (79.31.45.106)
Hi to everybody I'm an happy user of PAS 3x + ST 70 and incredibly after 30 minutes of working volume goes up and slowly down. not so much but it is listened to. The problem is on the two channels. I .......
16: Dynaco-Doctor Forum, RE: PAS - more trasparency with two caps on heater diode rectifier. (0.00)
Posted by dinatiz@alice.it on 2009-07-10, 11:33:34 (79.31.37.240)
Hi this is what i've made. .......
17: Dynaco-Doctor Forum, RE: "may be some problem?" (0.00)
Posted by dinatiz@alice.it on 2009-06-29, 03:42:50 (94.138.163.146)
Hi unfortunatly i've no tester with me so i can't mesure voltage output. I don't know if voltage drop of UF5408 is different from 1N4007 so i'm afraid for voltage output that goes to the tube. Anyway .......
18: Dynaco-Doctor Forum, Replacing PAS-3X selenium rectifier with UF5408 ??? (0.00)
Posted by dinatiz@alice.it on 2009-06-27, 05:41:30 (79.55.4.57)
Hi to everybody I have just replaced selenium rectifier with two UF5408 (ultra fast diode), and pas seem to work properly. may be some problem? Thanks .......
19: Dynaco-Doctor Forum, Volume Control On PAS-3 (0.00)
Posted by dinatiz@alice.it on 2009-06-11, 07:40:44 (94.138.163.146)
Hi, where is the procedure to de-soldered the 2 wires and the .1 caps from the loudness taps on the volume control? Best regards Tiziano Di Natale .......
20: Dynaco-Doctor Forum, RE: Sounds like a ground has broken. (0.00)
Posted by dinatiz@alice.it on 2009-06-10, 00:34:15 (94.138.163.146)
Hi i've found the problem! The problem is myself. The switch mono/stereo in front of the ST-70 was in mono mode :( Thank you for the helps. Best regards Tiziano DI Natale .......
21: Dynaco-Doctor Forum, RE: Sounds like a ground has broken. (0.00)
Posted by dinatiz@alice.it on 2009-06-08, 22:19:40 (94.138.163.146)
Thank you very much! I will post the result as soon as possible. Best regards Tiziano Di Natale .......
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