lewm

Responses from lewm

Phono preamp tube rolling.
It is very often the case that when dual triodes, like nearly all the tubes so far mentioned in this thread, are used in circuit, only one of the two separate triode sections is actually used.  But what is a BGRP? Thanks. 
Phono preamp tube rolling.
What’s a BGRP? 
My battle with sibilance.
Mijo, Have you noticed that you’ve backed off your original claim that Wilson deliberately engineered a “Gundry Dip” into their speaker’s response (without saying which of their many very different speakers you were talking about).  And that along... 
Phono preamp tube rolling.
KenRad VT231GT is also my favorite 6SN7.ECC33 is not the same electrically as 6SN7. 
MC cartridge upgrade for a Schiit Sol (Denon dl-103r) help!
I am not a lover of the Denon DL103 or any of its variants, but it is a simple matter to increase the effective mass of a low mass tonearm to suit a low compliance cartridge. If that’s what you want. 
Purchasing from LP Gear
I would spend the extra bucks for the latest version of ART9, whatever the alphanumeric designation. LP Gear is ok for this purchase IMO. I’d be careful buying a replacement stylus for MM cartridge from them however. Read the fine print. 
Can a Micro Seiki MA-505M2 from a Micro Seiki DD8 fit on Luxman PD-310 TF-MT tonearm base
Where there is a will, there’s a way. Especially for a machinist. 
Is great sound possible through an on-board, MM phono stage?
"MM Pass" can simply mean take the SUT out of the signal path by connecting the tonearm cables directly to the MM phono inputs.  Every SUT has that level of flexibility. 
Liquid stylus cleaner without solvent
Every liquid, even water, is a potential solvent.  Can you be more specific? "Like dissolves like", we were taught in chemistry. 
Phono preamp tube rolling.
I tried the National brand 12AT7, and I did not like them compared to at least four or five other brands of European or US origin. In fact a Chinese made tube was the best of the bunch in my 12AT7 survey, but it had a very short lifespan which I c... 
Phono preamp tube rolling.
Fortunately, these small signal triodes tolerate a lot of abuse and can still sound”good” while being abused, if you don’t measure anything and are subject to listener bias. Which is all good. But it’s best not to draw conclusions like A is better... 
Phono preamp tube rolling.
Yes, some “Japanese” tubes are re-labeled Mullards or other Euro or US brand, but there’s nothing wrong with that. 
Phono preamp tube rolling.
Surfmuz, You wrote, "…12AU7, 12AT7 and 12AX7 are pretty much the same tube with a little different gain settings." As mulveling already intimated, this statement could not be more wrong. The only thing these three tube types have in common is that... 
My battle with sibilance.
Most loudness controls on old school preamplifiers and receivers were continuously variable, sort of like bass and treble attenuators combined into one circuit.  So, for example, if you rotated them to left of center, you got a reduction in compen... 
Phono preamp tube rolling.
surfmuz, What I meant is that there are nefarious persons who change the markings on tubes that otherwise look very much alike, so as to make inexpensive versions look just like rare and more valuable NOS tubes.  So, before shelling out big bucks ...