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Read the Post in new Window Read the Post in Threaded view  Post #396: OK by Petrasescu_Lucian on 2009-07-16 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1916 Replies 
I occasionally read this thread, but I guess you're right and it would be fair to read it from the beggining. Will do !As a general rule and I guess it applies to everybody else, the playback of my system is better late at night although there are so...

Read the Post in new Window Read the Post in Threaded view  Post #408: Hello again ! by Petrasescu_Lucian on 2009-10-18 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1916 Replies 
As I've said a couple of months ago, I got my APS 700i regenerator a few days ago... I didn't "audio-test" it so far but there will be plenty of time for that later. I've fired it up to see if it's workong properly and everything looks good so far. T...

Read the Post in new Window Read the Post in Threaded view  Post #24: A correlation between Gm and sound quality? by Romy the Cat on 2008-01-02 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
Lucian, here is where the beauty of 7788 comes - max Gm with absolutely lowest noise ( the area where Russian tubes reportedly can hardly compete). What is particularly cool about 7788 that that are dead quiet one after another. I have near ten dif...

Read the Post in new Window Read the Post in Threaded view  Post #391: This is the interesting part by Petrasescu_Lucian on 2009-07-15 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1916 Replies 
[quote user="Romy the Cat"] If the APS works as I described in the paragraph above then the buttery does not filter/buffer the source of ASP’s oscillator and amplifier. In this case I would like to get rid of the buttery and do not let the APS circ...

Read the Post in new Window Read the Post in Threaded view  Post #393: The different debugging philosophy by Romy the Cat on 2009-07-16 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1916 Replies 
Lucian, If your system draws a steady 500W, do not use LC filtration and if you would like to buy 700 model then you might reconsider it and look at 1050 mode or 2000 model. The more load you have on this thing is the better result is, I perso...

Read the Post in new Window Read the Post in Threaded view  Post #27: 7788 Ringing by Lucian on 2008-01-13 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
Hello, While the question was addressed to Romy, may I be allowed to barge in :-)?... A question before anything: do you feed the 7788 DC or AC on the filament? Many tubes are perfectly able to oscillate mechanically on 1KHz--20KHz range, ...

Read the Post in new Window Read the Post in Threaded view  Post #23: E55L by Lucian on 2008-01-02 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
Hello first, as I am new on this site... I have tried a number of high Gm pentode/triode tubes, including E55L and, of course, 7788. All are very linear when used as triodes, but do not bet on very low noise, if that is what you would be after. Th...

Read the Post in new Window Read the Post in Threaded view  Post #25: High Gm Tubes and "Sound Quality" by Lucian on 2008-01-03 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
Hello Romy, Quite clearly, a high Gm device will have a higher voltage gain than a lower Gm (for pentodes, gain is Gm*Rload if single ended) and this is something we are after in a MC stage. Noise performance is crucial and below I am analyzing a ...
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