Originally Posted by decooney (Post 1002879)

Should be fun to try with the X5s. I ran a similar type of speaker config. A midrange-woofer and AMT configuration + lower stereo subs similar to X5 - with my Inspire. Your X5s have even better efficiency at 97db. Compared to your A21 you should hear more depth and dimension, and nice midrange with the AMT section. Congrats!

Originally Posted by Masterlu (Post 1002884)

Just tell her;

“I really can’t believe how long it took for this to get repaired; I’m just glad to finally get it back in my system.”

:naughty:

Originally Posted by Jprod (Post 1002888)

Devious and excellent suggestion. Sounds like you have done this before !:thumbsup:

Originally Posted by Jprod (Post 1002876)

Thank you sir. I do have a general question - how do I sneak in a tube amp past the wife without her noticing ?��

Originally Posted by Bombadil (Post 1002919)

Oh, you noticed the tube amp. That's just some old antique I picked up off of Craigslist. I traded [insert something untraceable here ... like some CD's or cables] for.

Originally Posted by oldominion (Post 1002659)

I got a NOS RCA 6bx7 today from seller lowtechelec on Etsy and it's really cleaned up a lot of the hum, interestingly. I guess it makes sense, as the lowest mu (gain) of the 6sn7/6sl7 family.

All of my troubles started when my 6bx7 started going south and I began swapping in 6sn7/6sl7 into the buffer position. Anyhow, glad to be back to somewhat normal!

I'm intrigued by Dennis's 45 amp. I've got a Waamamp 2a3/45 that's been my only real introduction to the 45 tube. I borrowed a pair of Emission Mesh GLobe 45's that do sound wonderful, just not a grand wonderful.

Last, has anyone rolled any 6bl7's into the buffer stage of their 3.1 preamp?

Originally Posted by pechelman (Post 1002719)

The grounding methodology was reworked to be a bit more conventional. There was also a good bit of noise getting into the signal from the AC heater wires. Dennis packs a lot of goodies into his nice compact chassis, but it got a little close to the selection knob.

Originally Posted by oldominion (Post 1003173)

I remain interested in this modification and am surprised more people haven't weighed in. It appears to me that the unconventional grounding methodology is the cause of hum issues in a measurable number of Inspire preamps, especially with those of us who have more sensitive speakers.

I'd like to know more. In my 3.1 preamp, hum is a problem. As detailed on these pages, I've come at it from a number of different angles. I'm able to mitigate the problem with tube swapping, etc., but I cannot get rid of it. And I would like to.