gte357s

Responses from gte357s

Is rectifier tube arcing a problem?
Just want to provide an update. I tried adding the diodes but then one of the Sylvania 5931 (which is a rugged 5U4G) dies. I had one of these died died before adding the diodes. And they didn’t arch, but just died with no sound. I think it is not ... 
Is rectifier tube arcing a problem?
@jaytor  i would say I like them.  I sold my X5 before I bought this amp.  I am using them to drive a pair of JBL 4341 now.  I only have 3 power amps to compare: a custom built 300B by Otomon Lab from Japan using Luxman mq-300 schematics, the ANK... 
Is rectifier tube arcing a problem?
@sns  it is a Audio Note Kit, not the Audio Note UK.  However, there is a bit of a history.  What I learn is that the circuit of this monoblocks is initially designed by Andy Grove who is a prime engineer at Audio Note UK.    
Is rectifier tube arcing a problem?
@atmasphere Thanks for the info.  I think so will experiment the diodes approach first, because it is cheap and easy enough to do it myself.  It is also a good learning experience for me.  At the same time, investigate on changing the capacitors. ... 
Is rectifier tube arcing a problem?
@imhififan i am in the the-lesser-the-better camp.  So, I think I will try adding the diodes first.  Thanks for the info though.  
Is rectifier tube arcing a problem?
@imhififan  wow, thank you very much, that’s a very clear diagram, now I won’t be worried of making a mistake. yes, I always want to learn more.  Does the soft start and diode compliment to each other, or I only need to pick one to do?  
Is rectifier tube arcing a problem?
@imhififan  also to make sure, the diodes should be added at pin 4 and 6 as shown in the second diagram above, with the line on the diode closer to the pin, am I correct?  
Is rectifier tube arcing a problem?
@imhififan good point.  I also have considered those points, especially I am not that technically inclined.    
Is rectifier tube arcing a problem?
@atmasphere thank you very much. A couple more questions: 1) is it able to tell from the diagram if there other rectifier that can be used and handle the current drawn by the 220uF capacitor? 2) is it necessary or recommended to change the oth... 
Is rectifier tube arcing a problem?
@atmasphere @imhififan  Yes, mine also has 220uF capacitor, and yes, the arcing only happens when the amp is turn on. After than, and if the fuse doesn’t blow, the amps sound fine. here is the wiring diagram of the capacitor and resistors. Wi... 
Is rectifier tube arcing a problem?
@imhififan thank you. This seems something small and won’t change the sound. min the diagram, I need to add two diodes per tube, am I correct?  
Is rectifier tube arcing a problem?
@dekay  I found that thread at the Steve Hoffman Forum.  Honestly, what being explained there is beyond my technical knowledge.  I like the idea about adding a soft start, but I need to take it to my tech to do that.  But do you think adding a so... 
Is rectifier tube arcing a problem?
@atmasphere and others BTW, is there other rectifier can be used for this amp?  Such as a soft start 5AR4?  
Is rectifier tube arcing a problem?
Short answer is Yes, the arcing happens in both channel.     for the 5C3S, at the beginning, I don’t think they arc.  Then after a month, both tubes arc.  For the RCA, they both arc right the way.  For the TungSol, so far, only one arc.  And when... 
Is rectifier tube arcing a problem?
It is a Audio Note Kit Interstage 300B monoblock.   Here is the assembling instructions menu.  I have it built by someone and have another technician to go through it, so, I believe it is not a built issue.  It is design for 5U4G.  However, the co...