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Silly question I think I know the answer to but...

post #1 of 19
Thread Starter 

My newly acquired, used, Shuguang Treasure is massively microphonic on the right side.  Garbage time or can it be scared solid? 

post #2 of 19

A few hours in liquid nitrogen may fix it.

Or break it completely.

post #3 of 19
Thread Starter 

So I need my wife to hold it for a while... bazinga ;)

post #4 of 19
I assume you've reversed the sockets?

NK
post #5 of 19
On my X^nth though, I may be reading this all too wrong... We're talking about the gorgeous black-getter tubes, no?

NK
post #6 of 19
Thread Starter 

Yes the gorgeous ones and I don't even know what reverse the sockets would mean ;)  Smacking it around helped.  Its less microphone and more microphonic now.  Not that it matter, the Syl Bad Boy came in and wow, just wow.  Shug is back in its box :p

post #7 of 19
Egawds! That kind of tube abuse just rattles the soul...

I was referring to the tube sockets, and possible partial-insertion of a few pins.

NK
post #8 of 19
Thread Starter 

Ah, no its the only tube I have trouble with and the socket is tight.  Its also a $2100 retail amp that's under warranty so... just no ;)

post #9 of 19
That's good smily_headphones1.gif

For such a nice tube, I would HOPE that they go through a strict quality assurance process... And besides a failed getter, I think that microphonics on a major signal tube is just unnaceptable.... But with the company being located in China, it's not exactly an easy return...

I'd hit the hardware store for a Teflon o-ring (plumbing section) that would both work for the glass envelope and withstand the heat, and see if that dampens any microphonics picked up.

NK
Edited by Nick 214 - 7/20/12 at 10:17am
post #10 of 19
Thread Starter 

Hmm now the Sylvania Bad Boy is doing the same and still just the right side.  Also seems that the cables whether interconnect or headphone are the easiest way to trip the effect.  Thoughts?

post #11 of 19
That sounds like a bad connection in the amp....


NK
post #12 of 19

Yup, send the puppy back for warranty service. If it's based on a PC board then you may have a bad solder joint on your hands. If it was out of warranty and you're handy w/ soldering iron it would be fairly easy to fix. Look for any large part that may have leverage that would vibrate or move and you will narrow it down, like a coupling cap or tube socket.

post #13 of 19
Thread Starter 

So we think a bad solder joint could cause the amp to be very micro-phonic when impacted?  To be clear... if used normally with no outside impact event, no micro-phonics.  Still a solder problem?

post #14 of 19

whats the amplifier, and what kind of tube sockets?

post #15 of 19
Thread Starter 

Apex Peak, black 6SN7 socket.

700

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