ervikingo

Responses from ervikingo

Hum on Tube Amp - Can't find source
Monday morning update.  I couldn't wait for the "good tubes" to come for testing.  I ordered one from Amazon (overnight delivery!) and the noise is completely gone.  Its scary quiet! I ordered new 7044 as one of them is not up to par (still some ... 
Hum on Tube Amp - Can't find source
I did try with my other speakers (Aerial 8b) and noise is present.    thanks for the info on tube testing! I’ll read that Audio Asylum post now.   
Hum on Tube Amp - Can't find source
@dpop I sent it because when I received them they had non OEM inline fuse holders and one was DOA.  I spoke with the seller and agreed that they should go to Manley for repairs/return to original configuration and any other repairs. I paid for ch... 
Hum on Tube Amp - Can't find source
@zombiedad I should have some tubes delivered tomorrow for the swap. Let's hear!  
Hum on Tube Amp - Can't find source
@zombiedad swapped the KT77 also swapped the 7044 and 12ax7 from one unit to the other. I suspect that 12ax7 is the problem.  Speaker wires are AQ Rocket directional 18" long  
Hum on Tube Amp - Can't find source
@jea48 + @dpop It looks like the one I posted. Mine is a TPS3A111000 (no superseded by TPS3A111002) https://mall.industry.siemens.com/mall/en/us/Catalog/Product/?mlfb=US2%3ATPS3A111002 Thus: voltage code: 120/240V, 10,3W 100kA per phase EM... 
Hum on Tube Amp - Can't find source
I wholeheartedly agree.  Funny, one of my bicycles is an Orbea "Occam" Thanks for all your insights.  I'll post results after replacing the tubes.  
Hum on Tube Amp - Can't find source
@dpop thanks for adding my comments and past attempts.  Those links are very useful !  The reviewer said they are dead quiet.  Hoping I get that @hiend2 @donavabdear thanks for the input @atmasphere Can’t wait to get the tubes here. In hopes of ... 
Hum on Tube Amp - Can't find source
@jerryg123 Can't confirm.  Good question  
Hum on Tube Amp - Can't find source
@rhljazz Not treated.  Thanks for the suggestion @papafrgog the closest access point is 20'away.  I disconnected all wifi and low voltage and it didn't improve.  Thanks! @redhouse6 I agree, I'll try on another location before buying something el... 
Hum on Tube Amp - Can't find source
@atmasphere they are 20 years old. I just realized that the prior owner changed the input tubes to 12AX7 when the design calls for 12AT7.  Thus higher gain (if my limited knowledge of tubes is correct) than what the spec for my particular version... 
Hum on Tube Amp - Can't find source
Well, I can confirm it is not the alarm (which BTW I have reconnected!)   @redhouse6 like a Triplite? I have a ZLC on order but it takes time to get it.  
Hum on Tube Amp - Can't find source
@wsrrsw tried with Van Alstine Humdinger (for DC) but as described by FVA it only works to solve mechanical noise. I decided to try anyway.    Also tried the iFi plug in things and even an old Tice thing (not the digital clock)   waiting on a Ze... 
Hum on Tube Amp - Can't find source
@dpop my house was built 5 years ago but the transformer has been there for years (i had the lot for 15 years before i built). Hopefully they’ll come check properly. The surge suppressor: https://www.grainger.com/product/19T314?gucid=N:N:PS:Paid:... 
Hum on Tube Amp - Can't find source
@pinotnoir it is a dedicated line/breaker to the music room outlets.  These feed the head units,4 monoblocks and a projector.  Keep in mind, Everything but one tube amp is connected at a time as I try to find the problem. I originally had dimmers...