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bobui
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12-12-30
23:04:32
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daiwok
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12-12-30
22:58:35
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bobui
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12-12-30
22:39:22
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| 回覆 (232): EL84...... |
Thanks to all for the interests on the Tele EL84s via the pms. I make sure if they have to go away, they will be going to friends here at 1pk. Allow limage and myself to have a week or two to make sure these EL84s are in good health before they can be reached to their new home.
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bobui
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12-12-30
21:50:18
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| 回覆 (232): EL84...... |
Shit!
Our forum must be too quiet that the server goes asleep.
ZZZZZZZZZZZZZZZ
Wake up please !!!
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limage
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12-12-30
21:46:50
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| 回覆 (231): EL84...... |
While on this subject, we ought to have given credit to GEC with their distinctive label. The label is yellow when it comes out of the box. It turns light brown immediately upon use and eventually turns black when the tube is well done. Itâs such a simple and yet effective device to protect consumers from lurking swindlers.
Just wonder why the Gold Lions donât use a similar method!
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limage
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12-12-30
21:32:15
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| 回覆 (230): EL84...... |
I think you are referring to the bottom darkish colour around the pins that makes you believe that these valves are not NOS
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Yes, it is quite telling. I have quite a few Mullards, Amperexes and Teles that look similar (not even as bad) after 10 thousand hours of use. They had none of those brownish burns in their butts when new. Test readings are still acceptable, quite miraculouly !
Yours may still be working but may also go dead in an instant. Filaments may snap without warning etc.
These tubes were likely to be taken from scrap Normande cabinet sets or Telefunken radios.
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limage
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12-12-30
20:11:50
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| 回覆 (229): EL84...... |
I think you are referring to the bottom darkish colour around the pins that makes you believe that these valves are not NOS. Well, other than the good measures on My AVO 160, the lettering is orignal and look pretty brand new to me. If these have been in used for sometimes, very unlikely the powder wordings still look so clean.
I will pass them to you for a second AVO test, you let me know. ok? |
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bobui
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12-12-30
15:46:51
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| 回覆 (228): EL84...... |
Certainly, but judging by the look, they cannot be NOS.
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but the getter looks pretty good. |
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drwkng
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12-12-30
14:37:44
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| 回覆 (227): EL84...... |
Can you measure them on your AVO for me please?
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Certainly, but judging by the look, they cannot be NOS.
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limage
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12-12-30
13:46:33
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| 回覆 (226): EL84...... |
No wor! I got them new more than 20 years ago. Pins are straight and the glass is clean and prints are still shiny! I last measured them on my AVO yesterday and looking jolly!
Can you measure them on your AVO for me please? |
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bobui
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12-12-30
13:41:56
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limage
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12-12-30
13:30:38
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bobui
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12-12-30
12:12:35
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bobui
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12-12-30
12:10:50
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| 回覆 (222): A song to say goodbye to 2012, 2013 coming la |
This is a song to the following:
An Goto old friend who got very sick in 2012.........."he is back"!
The Happy hour laughters I missed so much recently due to my silly schedule! Cheers to the evil, the dentist, the chef, Tony,,,,,,,,,,,,,, and of course "朋友" lor!
And Cheers and good luck those who always like to challendge bobui lor! Try harder la!
Wish you all a smilyyy 2013 coming!
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bobui
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12-12-28
18:21:35
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limage
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12-12-25
07:30:27
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| 回覆 (220): 粉腸？？？ No la! |
Yes, thats right! 2A3, you have steady hands and should do all the hard work lor!
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Absolutely! But according to Jack Nicholson in "Shining": all work & no play makes Jill a doubt boy. So pls spare me in doing those hard work.
BTW, pic resolution problem, or else I need my eyes checked. Just couldn't see what freq those gents were testing, at least on the scope, the square wave is close to perfect, though I do hold reservation on toroids! |
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Derek2A3
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12-12-05
16:41:48
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| 回覆 (219): 粉腸？？？ No la! |
粉腸 X 2 lor! Can I be the one checking the watch hoping dinner will come sooner and the hair line doesnt move as further back!!!
Yes, thats right! 2A3, you have steady hands and should do all the hard work lor! |
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bobui
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12-12-05
16:03:51
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icefox
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12-11-30
16:24:30
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icefox
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12-11-30
16:23:19
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icefox
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12-11-30
16:22:06
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| 回覆 (215): "A Piece of Cake" |
therefore: (a+b)(a-b) = 0
and so a = 2a = 3a = 4a = anything you want
It was the trick we freely used to fool assholes back in the school days
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As thekong said, "if you want people to believe, at least come up with some equations, ok?". drwkng is correct pointing out the invalidity of division by zero which is the whole idea : you can't use an error to justify the validity of a contradiction.
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cpsjj
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12-11-18
15:25:50
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| 回覆 (214): "A Piece of Cake" |
a = b
therefore: (a+b)(a-b) = 0
and so a = 2a = 3a = 4a = anything you want
It was the trick we freely used to fool assholes back in the school days. Zarathustra is no asshole, he is only an idiot. Cannot work this time.
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limage
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12-11-15
18:45:01
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| 回覆 (213): "A Piece of Cake" |
a(a-b) = (a+b)(a-b)
a = a+b
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unfortunately this is not true if a=b then a(a-b) divided by zero is undefined! you can't have your cake and eat it. |
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drwkng
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12-11-15
18:06:16
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| 回覆 (212): "A Piece of Cake" |
It's like :
Let a = b
a^2 - b^2 = (a+b)(a-b)
since a = b, b^2 = ab
a^2 - ab = (a+b)(a-b)
a(a-b) = (a+b)(a-b)
a = a+b
since a=b, a = a+a
therefore 2=1.
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cpsjj
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12-11-15
17:56:30
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| 回覆 (211): "A Piece of Cake" |
>There is what they called sum and difference. So when 10 meets 16.35, 6.35 and 26.35 will be created.<
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Come on, if you want people to believe, at least come up with some equations, ok?
Something like this would probably works :-)
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thekong
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12-11-15
16:20:53
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Derek2A3
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12-11-15
15:20:52
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| 回覆 (211): "A Piece of Cake" |
>>Oh Limage, your friend has reissued this LP in CD format!
>>http://www.firstimpressionmusic.com/product_p/limk2hd035.htm
I may have to buy this one just for the hack of it ... :-( Most K2 HD are just terrible IMHO ... excessive processing and compressed. But this one might worth having a copy around, hope it wasn't as bad :-) |
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Cadiver
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12-11-15
14:47:36
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| 回覆 (213): "A Piece of Cake" |
>..... ending up with 6.35 Hz left! Ah! <
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Somehow, I am very skeptical about that! :-)
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thekong
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12-11-15
14:46:33
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| 回覆 (212): "A Piece of Cake" |
What would the resulting effect be if modulated with the 16.35 Hz signal?
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There is a thing called noise cancellation, right? The same shall apply to the Hz, frequency cancellation lor! Meaning ending up with 6.35 Hz left! Ah! |
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bobui
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12-11-15
14:43:56
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thekong
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12-11-15
14:26:32
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thekong
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12-11-15
14:22:03
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| 回覆 (209): "A Piece of Cake" |
>You must have some serious warps with your LP. <
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The signal created by the warp should be way below 10Hz, correct?
What would the resulting effect be if modulated with the 16.35 Hz signal?
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thekong
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12-11-15
13:51:31
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| 回覆 (208): "A Piece of Cake" |
Are you referring to the rumble before the 3 brass notes at the beginning of Also Sprach Zarathustra ? According to the note, that is a foot pedal C (C0) at 16.35 Hz lasting for 20 seconds and Richard Strauss deliberately chose that single tone to represent the primeval hum of the universe. There is no change in note! You must have some serious warps with your LP.
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The 16.35 Hz organ bass stay on after the 3 brass notes but the volume has increased and seems to me the frequency also changed a bit but I am not too sure. When the bass drums kicked in, the organ bass still there with even greater volume. The drum bass started to get very loud by then and I can't really identify if the organ bass frequency remains unchanged but surely is there. |
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bobui
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12-11-15
12:38:10
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| 回覆 (208): "A Piece of Cake" |
According to the note, that is a foot pedal C (C0) at 16.35 Hz lasting for 20 seconds and Richard Strauss deliberately chose that single tone to represent the primeval hum of the universe. There is no change in note! You must have some serious warps with your LP
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If that's true, then OMG! 原來係聽炒魷魚咋? 咁我不如搵碟炒鮮魷看門口, 招呼朋友咯 |
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Derek2A3
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12-11-15
12:33:18
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| 回覆 (207): "A Piece of Cake" |
These 4 notes are all below 30 Hz which would be a Hercules task for any speaker, let alone Bobui's modest Lowther.
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Are you referring to the rumble before the 3 brass notes at the beginning of Also Sprach Zarathustra ? According to the note, that is a foot pedal C (C0) at 16.35 Hz lasting for 20 seconds and Richard Strauss deliberately chose that single tone to represent the primeval hum of the universe. There is no change in note! You must have some serious warps with your LP.
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cpsjj
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12-11-15
12:25:29
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| 回覆 (206): "A Piece of Cake" |
These 4 notes are all below 30 Hz which would be a Hercules task for any speaker, let alone Bobui's modest Lowther.
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Yes, yes, yes. My lovely modest petit Lowther never meant for double digits Hz la! 30 Hz in high volume. Far too much for this old lady lor! It would be a real torture that may end up with the cone and coil shoot out from the unit lor!
I took my Leak 3090 back home a while ago and is collected to a 300B push pull set up. The Leak is a strong fast large one having a 15 inches bass driver in a transmission line cabinet capable of reaching the loooooowwwww! |
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bobui
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12-11-15
12:11:31
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| 回覆 (206): "A Piece of Cake" |
These 4 notes are all below 30 Hz
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That is really impressive. Assuming even your system has that kind of resolution and you can really hear down to 20Hz. The 4 notes will be distributed over the 20 - 30 Hz, i.e. you can differentiate a 2.5Hz different tone at sub 30Hz region. 唔好玩啦！
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cpsjj
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12-11-15
11:56:55
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| 回覆 (205): "A Piece of Cake" |
These 4 notes are all below 30 Hz which would be a Hercules task for any speaker, let alone Bobui's modest Lowther.
There is nothing wrong if your system is able to produce an honest 26 Hz provided of course, anything above that frequency can be reproduced properly.
^__^
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limage
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12-11-15
10:32:47
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| 回覆 (204): "A Piece of Cake" |
>If memory serves, Limage was referring to a subtle change of 4 notes of the low registers of the Organ, not the overall subsonics during the intro before the brasses kick in.<
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I also believe so! Last time Limage brought the LP over, I could hear the low bass of the organ, but not the subtle change of the 4 notes! :-(
>咁隻碟買嚟做咩呀? 播到 = 衰聲, 播唔到 = 冇嘢聽o 我妖!<
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呢Ｄ嘢都係買嚟看吓門口姐。如果人地問你有冇，你話冇咪好冇面 ;-)
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thekong
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12-11-15
08:09:19
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