Lampizator Valve / Tube Rolling Review Thread
- Thread starter Zero000
- Start date
Those particular ones look familiar. Congrats! Best tube buy you could do
I dunno Goran still needs to beat AD1n in my book. It may do but I'll have to wait and see.
Re the Marconi Osram PX25s. I am actually not expecting them to beat either Tesla. But we'll see.
Great if you like them! Which recti currently? I love ACME and is my day to day recti...WE274b is better but price delta is just crazy...same goes for Takatsuki which might be even tad better then WE274b.
Can't remember the value for fuse...will dig it out somewhere or ping @Lee Henley - he knows
The HFT Supreme Fuse which I use and a good many of my friends in the UK is 3.15 A Slow Blow
Some interesting Tesla notes from someone who knows a lot more than I.
"yes, people like the mil.-marked tubes (I also note this in my auctions,
but never claim these are any better, only that they passed the mil.
selection). But this usually only means military combed through what the
tube makers sent them to weed out the duds, sometimes this was done
directly by TESLA. Not always, but most of the time, yes.
But some tubes were not sold to public for general use, for example the
TESLA RD25/27 were strictly industrial-grade, and used in transmitters
and/or special large AF amplifiers (the maker, TESLA Vrsovice branch,
made mostly transmitter and high-power tubes, and initially, they
started as part of the British Marconi Company before the
nationalization! Hence the PX25 variants in their program...)"
Take this as superceeding anything I have said, which had been derived from the claims of some eBay sellers.
"yes, people like the mil.-marked tubes (I also note this in my auctions,
but never claim these are any better, only that they passed the mil.
selection). But this usually only means military combed through what the
tube makers sent them to weed out the duds, sometimes this was done
directly by TESLA. Not always, but most of the time, yes.
But some tubes were not sold to public for general use, for example the
TESLA RD25/27 were strictly industrial-grade, and used in transmitters
and/or special large AF amplifiers (the maker, TESLA Vrsovice branch,
made mostly transmitter and high-power tubes, and initially, they
started as part of the British Marconi Company before the
nationalization! Hence the PX25 variants in their program...)"
Take this as superceeding anything I have said, which had been derived from the claims of some eBay sellers.
Last week I purchased Marty’s RK KR Audio PX25s. I had the “regular” ones before but didn’t really like them.
Well, I really like these. They don’t sound digital like I felt the others did. I also really like the bass extension with these.
I have been using the Acme 274B rectifier. I am not going to try the 596 and the Tak 274B.
Well, I really like these. They don’t sound digital like I felt the others did. I also really like the bass extension with these.
I have been using the Acme 274B rectifier. I am not going to try the 596 and the Tak 274B.
No. Here's a bit more:
"
TESLA did not build different versions for the military, they tested
regular versions, and if found OK, they gave them mil. insignia
sometimes with date codes and kept them stock until needed or released
them when no longer needed or renewing stock. I once talked to someone
who, when in mandatory military service, worked in one of the stations
that did the testing; and a good friend of mine worked in 1980s in TESLA
quality control (mostly transistors and ICs at that time) and told me
they sometimes did the "crossed swords" stamping etc. for the military
directly, no special tests were made.
For some very special industrial purposes, they (everyone, not only here
but Germany etc.) also tested tubes for example for balanced sections,
noise or microphony, for example for medial instruments like EKG
machines, but the tubes received additional markings after such tests,
military rarely did this.
TESLA made AD1n in several flavors depending on when they made them,
e.g. 1949 tubes are not yet designated "AD1n", just AD1, later 1950s
"AD1n" tubes had some small construction differences, but nothing major.
This is why it is important to also match the tubes for approx. the same
generation/construction...'
That basically tells you the answer loosely. I dunno if he wants to be identified, but he does seem to know what he is talking about.
Once in a galaxy far far away i’ll maybe do this comparison as i have both
but currently mighty death star just demolishes everything in known universe...Once in a galaxy far far away i’ll maybe do this comparison as i have both
They will get it eventually Goran. They are slow and innocent. But the infinite superiority of the mighty death star simply cannot be withheld or concealed. The sheer brilliance is hard to contain.
Why stoop so low as a KR? Don't put yourself through the pain.
LOL.
If digital was my main source I would own a Pacific as I have already been making my way up the Lampi line. I really do like my Big 7 MKII but I realize it can't do what the Pacific does.
Let's see what happens when you put the 242 in to the same preamp that Jazzhead uses with his 242. He has PX25 too
Justin's Big 7 revision 4
Finalised heater selection table:
HEATER SELECTOR SWITCH
Position 1 1A heaters, less than 5V
Philips AD1 4V 0.95A
KR PX4 4V 1.1A
Marconi PX4 4V, 1A
Position 2 1.5A heaters, less than 5V
EML Globe Mesh 45 2.5V, 1.5A
EML AD1 4V, 1.5A
Cunningham CX-345 2.5V 1.5A
Position 3 2A heaters, less than 5V
Marconi Osram PX25 4V, 2A
Tesla AD1n 4V, 2A
Tesla RD27AS 4V 2-2.3A
Position 4 2.5A heaters, less than 5V
Psvane 2A3 2.5V, 2.5A
Electro Harmonix 2A3 2.5V, 2.5A
Position 5 1A heaters, 5V and over
Tung Sol 6A3 6.3V, 1A
Position 6 1.2A heaters, 5V and over
Sylvania VT-52 7V 1.2A
300B 5V 1.2/1.3A
Finalised heater selection table:
HEATER SELECTOR SWITCH
Position 1 1A heaters, less than 5V
Philips AD1 4V 0.95A
KR PX4 4V 1.1A
Marconi PX4 4V, 1A
Position 2 1.5A heaters, less than 5V
EML Globe Mesh 45 2.5V, 1.5A
EML AD1 4V, 1.5A
Cunningham CX-345 2.5V 1.5A
Position 3 2A heaters, less than 5V
Marconi Osram PX25 4V, 2A
Tesla AD1n 4V, 2A
Tesla RD27AS 4V 2-2.3A
Position 4 2.5A heaters, less than 5V
Psvane 2A3 2.5V, 2.5A
Electro Harmonix 2A3 2.5V, 2.5A
Position 5 1A heaters, 5V and over
Tung Sol 6A3 6.3V, 1A
Position 6 1.2A heaters, 5V and over
Sylvania VT-52 7V 1.2A
300B 5V 1.2/1.3A
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