Audio Related Topics

Just about anything can be going on. I assume you have alot of confidence in the repair facility. Have you contacted them for some guidance and or suggestions? I would do one of two things. Work my way backwards removing a component and testing to see if the hum or hissing has gone away. Or unhook everything then add an item one at a time. This is in no particular order, so..... I remember from your previous post you were trying to bi- amp some speakers and at the end you had everything "singing". So things worked then. Something has changed from then to now, is anything new? 1. I would plug the bluos into the CD input and then test. 2. Next I would remove the sub from the bluos then test. 3. I assume the same speakers. 4. Was the new non inverting amp tested before and worked fine so we can rule it out for now? 5. Tubes were replaced. Who sourced the tubes? What were they? Matched sets and tested? Line board and or phono board tubes? 6. Any other parts replaced on the preamp 7. Any news cables? Just look at one thing at a time and something will pop up.

My question is why would you swap an inverting with a non-inverting? That could be the cause of your hum/hiss as the polarity of the output signal is inverted.

Tony Bennett I Wanna Be Around (1963)

Bill Purcell Our Winter Love (1963)

Brenda Lee Losing You (1963)

Rick Nelson Fools Rush In (1963)

Kai Winding More (1963)

YES Long Distance Runaround

Roy Orbison In Dreams (1963)

Led Zeppelin Dancing Days (LIVE Remastered)

Lonnie Mack Memphis (1963)

Now that both the C-1 and M-1.0t are refurb'd and upgraded w/BillD & Gundry and MKII - OPT002 the listening is a real treat but, I do have this problem!

The Shirelles Foolish Little Girl (1963)

The Crystals Da Do Ron Ron (1963)

Ray Charles Busted (1963)

I sent my Classic Vacuum Tube in to get some repairs and tubes. The previous owner glued foil to the underside of the cover. Causing the glue to drip onto the tubes causing a little trouble . I also replaced a Carver M-1.0t inverting with a non inverting. Upon reconnecting everything I get either hissing or hum. I have a bluos streamer connected to the sunfire via the aux input. The preamp output feeds the amp from output 1. The sub is connected to the bluos. Any guess as to what could be going on here? Thanks in advance!

Lou Christie Two Faces Have I (1963)

Garnet Mimms & The Enchanters Cry Baby (1963)

The Ronettes Be My Baby (1963)

Barbara Lewis Hello Stranger (1963)

Skeeter Davis I Can"t Stay Mad At You (1963)

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Los Indios Tabajaras Maria Elena (1963)

Dion Ruby Baby (1963)

The Essex Easier Said Than Done (1963)