Click title to read one, or click date to read all below it.
03-16-12
The only thing i can say is oh boyyyyyyyyyyyyyyyyyyyyyyy Jwm
03-16-12
Jwm, if in fact there`re sonic improvement(not for certain y ... Charles1dad
03-16-12
"this tube is off to a promising start that`s for sure. ... Phaelon
03-16-12
I was able to find a quad of gently used kr 300b's to try in ... Pdreher
03-17-12
Phaelon, congrats! what type of kr's you got, present produc ... Maxmad
03-17-12
Pdreher, the kr is said to be a very good sounding tube.the ... Charles1dad
03-17-12
Pdreher, i just want to second charles1dad’s caution with t ... Phaelon
03-18-12
The royal princess(rp) is really impressing me. it betters t ... Charles1dad
03-18-12
I want to thank isochronism(brett) once again for his very g ... Charles1dad
03-18-12
Charles1dad, many thanks for your impressions, like your way ... Maxmad
03-18-12
Now that there has finally been some comment and comparisons ... Gwalt
03-18-12
Swampwalker & markus - let me know if you end up trying the ... Pdreher
03-18-12
Terrific post, gwalt. thanks so much. regards, Metralla
03-18-12
Hi gwalt, i`m glad you posted your impresiions, as you say d ... Charles1dad
03-18-12
Charles1dad, gwalt and all others who participated in the 30 ... Phaelon
03-18-12
I am in complete concurrence with phaelon! the talent to li ... Isochronism
03-18-12
Phaelon and ischronism, i and i`m sure gwalt appreciate your ... Charles1dad
03-19-12
Charles1dad, how many hours would you say you have on each ... Onemug
03-19-12
I must echo the comments of charles and gwalt - although i d ... Gsm18439
03-19-12
Hi onemug, i really appreciate your kind comments.the rps ha ... Charles1dad
03-19-12
I just can`t seem to shut up on this thread. gsm i`ve been e ... Charles1dad
03-19-12
I would also like to thank you for all your learning experie ... Gwalt
03-20-12
Gwalt, i agree with every thing you you wrote above 100%. an ... Charles1dad
03-20-12
I agree with your findings also charles1dad and thanks for a ... Gwalt
03-20-12
I received my takatsuki's late yesterday and they are warmin ... Markus1299
03-20-12
Hi markus, congratulations!profound differences,i believe yo ... Charles1dad
03-20-12
Charles1dad, the one thing you didn't tell me about these t ... Markus1299
03-20-12
Marcus, true, but i did``nt want to be accused of 'over the ... Charles1dad
03-21-12
Hello, all, for those interested, i believe sophia electric ... A1joe507
03-21-12
My ren 30 has the vac branded 300bs so i'm pretty sure that ... Swampwalker
03-22-12
Swampwalker, i've got 4 used bt's that i'm going to try in ... Markus1299
03-23-12
"i am concerned about the sophia rps in the ren circuit ... Phaelon
03-23-12
Markus1299- very interested in your results. i will tell yo ... Swampwalker
03-24-12
Pretty certain carbon plate (not mesh) is the way you need t ... Pdreher
03-26-12
Ok, my vendor for the shuguang bts says he has 2 quads; one ... Swampwalker
03-26-12
80 ma. Pdreher
03-27-12
Pdrehr- got a response back from kevin saying comments anyon ... Swampwalker
03-27-12
I`d follow kevin`s advice he knows his product`s characteris ... Charles1dad
03-27-12
I will heed kevin's advice, unless there is a strong reason ... Swampwalker
03-27-12
Michael, i would definitely avoid the 80 ma tubes, on the ba ... Almarg
03-27-12
Hi markus, with additional burn-in hours do you have updates ... Charles1dad
03-27-12: Pdreher
Swampwalker - I am far from technically savvy when it comes to tubes... but I assumed that "mA" refers to milliamperes. If that's the case, my VAC REN 70/70 Signature amp has a milliamperes dial on it and it measures milliamperes for each tube. In my amp, my VAC sourced Chinese tubes measure between 75 & 78 milliamperes, and my latest KR tubes are measuring in the 80 to 85 range. I talked to Brent about this yesterday, and I could have sworn that he said healthy tubes should measure in the 85 to 90 range. At this point, I have too much conflicting info to know which end is up. FWIW, the WE 300B spec sheet (which REN amps are based on) call out a max. plate current of 100 milliamperes, which is a far cry from the 48 mA option your dealer is offering you (assumes mA and milliampere are synonymous).
Pdreher (System | Threads | Answers | This Thread)
03-27-12
Paul, yes "ma" stands for milliamperes, and in thi ... Almarg
03-28-12
Al - yes, the readings on the bases of the vac / chinese tub ... Pdreher
03-28-12
Hello al, the vac ren amplifiers have auto bias, would`nt th ... Charles1dad
03-28-12
I believe there are differ auto-bias circuits around, also h ... Maxmad
03-28-12
Charles1dad, the new takatsuki ta300b tubes are still break ... Markus1299
03-28-12
yes, to a considerable degree. also, the bias conditions th ... Almarg
03-28-12
Markus1299 always test tubes before using them in your amp. ... Maxmad
03-28-12
My vac 300bs are marked 48 or 47, so that gives me some bett ... Swampwalker
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