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| [#9125] Leak Club for Leakies or Leak user This pair of 12.1 with VT75 grey and the cosser 52KU driving apair of morden JBL. The owner is a LP fan. See his huge LP system turntable. His phono amplifier is a stranger to me :-)  |
Gingers 正式會員221.xxx.xxx.131 |
2005-12-26 20:51 | |
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| [#9126] Leak Club for Leakies or Leak user More than 10 tubes inside the phone amp.  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 20:52 |
| [#9127] Leak Club for Leakies or Leak user I don't know this turntable is user friendly or not. The sound is stunning :-)  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 20:54 |
| [#9128] Leak Club for Leakies or Leak user Another Michale's 12.1 set up :-) A relative simple set up. No LP. His Fisher 400CX-2 visited me before and made me hunting for the 400CX-2 eventally.  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 20:57 |
| [#9129] Leak Club for Leakies or Leak user This set up is similar to mine :-) Fisher 400CX-2 + 12.1 :-)  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 20:59 |
| [#9130] Leak Club for Leakies or Leak user We all suggested to Michael to replace the dangerous wires :-)  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 21:00 |
| [#9131] Leak Club for Leakies or Leak user Pay attention to left 12.1. It is a multi voltage version. It is rare and even not mentioned in the Leak book.  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 21:03 |
| [#9132] Leak Club for Leakies or Leak user See the power transformer, the model number is TL/12/T3/C. Furthermore the previous owner changed all the 0.25uF coupling capacitors to TCC can capacitors :-) Most of the resistors are RMG :-)  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 21:07 |
| [#9133] Leak Club for Leakies or Leak user To add fun, Michael (M9) brought along his beloved Audio Note M7 to visit. Thanks for both Michael's hospitality :-)  |
Gingers 正式會員 221.xxx.xxx.131 |
2005-12-26 21:10 |
| [#9134] Leak Club for Leakies or Leak user Thanks for the two Michaels (M9 & Mung)'s hospitality! M9's LEAK TL/12.1 has completely replaced M9's Marantz 9 in his system.  |
rcwy 正式會員 221.xxx.xxx.246 |
2005-12-26 21:44 |
| [#9135] Leak Club for Leakies or Leak user This photo was taken half year ago when M9's Marantz 9 monolbocs were still the main amps. %20364.jpg?dc=4675517527691830656) |
rcwy 正式會員 221.xxx.xxx.246 |
2005-12-26 21:45 |
| [#9136] Leak Club for Leakies or Leak user M9 hired a sifu to re-lay the AC mains cables. This is not what every audiophiles can do at their home. Bravo! M9.  |
rcwy 正式會員 221.xxx.xxx.246 |
2005-12-26 21:47 |
| [#9137] Leak Club for Leakies or Leak user Then we moved to Mungs' luxurious home.. overlooking the beautiful Victorial Harbour.  |
rcwy 正式會員 221.xxx.xxx.246 |
2005-12-26 21:48 |
| [#9138] Leak Club for Leakies or Leak user Mung's system, featuring a FISHER 400CX-2 preamp, a pair of LEAK TL/12.1 monolbocs, a pair of Harbeth LS/35A's (single-wired).  |
rcwy 正式會員 221.xxx.xxx.246 |
2005-12-26 21:50 |
| [#9139] Leak Club for Leakies or Leak user http://www.gahooyoogle.com/search.php?st=Web&q=leak+TL%2F25A |
Gingers 正式會員 221.xxx.xxx.32 |
2005-12-27 09:14 |
| [#9140] Leak Club for Leakies or Leak user Valve Amplifiers WHEN Harold Leak introduced his company’s (H.J. Leak & Co) first transistorised amplifier, the famous Leak Stereo 30, he remarked that in his opinion, eliminating the output transformer was the greatest advantage of the new model. The Stereo 30 was a very significant development. It was the first commercial transistorised amplifier from a leading British manufacturer, previously renowned for state-of-the-art valved designs. Its introduction reflected the very sudden shift world wide from vacuum state electronics to solid-state, at a time when the thermionic valve was still capable of further development and exploitation. It's easy to understand why amplifiers and hi-fi electronics in general became transistorised so rapidly. Transistors saved costs, and in terms of standard test procedures, measured far better. Total Harmonic Distortion (THD), for example, that still-revered but relatively unrevealing yardstick of performance for hi-fi amplifiers, was invariably lower with transistorised units. Power outputs were far higher than from valved models of equivalent prices. Hi-fi amplifiers had now, it seemed, reached a peak of development, with minimal distortion and unlimited power availability (or so it seemed) to drive the new breed of inefficient speakers. In the fifteen years or so since the great transistor revolution, the valve-versus transistor argument has constantly been debated. Many audiophiles regret having sold their old Quad 2's, their Fishers, their Scotts, their Leak TLl 2's, Stereo Twenty's and Sixty's and so on, having found the new transistorised designs less satisfying sonically despite vastly superior general specifications (right on! - Ed). Until fairly recently, many of the problems associated with transistorised amplifiers remained unidentified, and there is little doubt that further problems have still to be identified and overcome. Yet there is no evidence that a transistorised amplifier (even one based on miniature integrated circuits) cannot sound at least as good as the very best valved models. Harold Leak's remark in connection with output transformers is one of the best arguments in favour of transistors, for it seems to be the output transformer more than any other component in a valved power amplifier which dictates performance quality. And good output transformers are very expensive indeed. If we are to establish why a valved amplifier sounds better than a transistorised amplifier (and we're still far from convinced that this is so) we must look at the technique in both instances. It would appear that conventional methods of test and measurement give little real indication of how a particular component is going to sound, and this is probably because of the enormous difficulty of providing a controlled and quantified test signal simulating the sort of signal derived from musical sounds. In a practical situation, an amplifier is faced with signals of astounding complexity, vastly different from the far simpler signals derived from test equipment. In addition, an amplifier is also faced with a practical loudspeaker for a load, and an investigation of the behaviour of a speaker as seen by the amplifier reveals a situation which often makes the dedicated audiophile want to give up the whole idea of high quality sound reproduction and retire to a desert island! Many amplifiers particularly transistorised ones-can be excused for complaining audibly about the sort of load they are called upon to feed. And at the amplifier front end, there is another interface problem, that of the source (invariably the pickup cartridge and its need for equalisation and good S/N ratio poses the greatest difficulties) and its effect on the preamp input performance. There is a lot of evidence to suggest that a good transistorised preamp is superior to a good valved one, not simply in terms of measured performance but in terms of the audible result. There is no doubt that most valved amplifiers contribute to a categorically different audible result from that of most transistorised amplifiers, in fact an experienced ear can almost invariably judge whether a valved or transistorised model is in use. This points to an influence by design and manufacturing technique on the result - which might seem obvious but which should not happen in theory. Most high quality valved amplifiers of recent manufacture and design (within, say, the past couple of decades) use the so-called ultra-linear push-pull output stage, which inherently cancels out high-order-harmonic distortion and has a number of other important desirable characteristics. As its description indicates, this type of output stage employs a pair of valves in which one 'Pushes' and the other 'pulls' - a mechanical analogy being a two handled saw. Both valves operate throughout a complete cycle, swinging from positive to negative as demanded by the input signal. The use of two valves rather than one increases output amplitude to give more power than would be achieved via a single-ended output (quite feasible with valves). In fact many ultra-linear push-pull output stages will produce a useable signal with one of the valves removed, at the expense of power loss and increased distortion! (We don't recommend you try this, incidentally, if you own a valve amplifier). |
Gingers 正式會員 221.xxx.xxx.119 |
2005-12-27 11:18 |
| [#9141] Leak Club for Leakies or Leak user http://groups.yahoo.com/group/hktubeaudio/surveys?id=577414 Vote yet?? |
Gingers 正式會員 221.xxx.xxx.172 |
2005-12-27 22:22 |
| [#9142] Leak Club for Leakies or Leak user gingers hing, Bought the contact suppressor and installed. But when i turn the switch on, i find the 3 smaller tubes(12AX7) becomes "red" for a short moment and returned to normal then. Is the connection OK? I just connect the 2 legs(suppressor) to the 2 switch post holes. Sorry, I don't know how to upload pictures. Thanks for your comment. |
conrad2002 正式會員 202.xxx.xxx.98 |
2005-12-28 11:49 |
| [#9143] Leak Club for Leakies or Leak user conrad2002 I cannot catch up your question. Are you using Mullard 12ax7. I was told the Mullard always flashes when power on. You can send photos to me. I can post for you. johnkeung@hotmail.com |
Gingers 正式會員 210.xxx.xxx.228 |
2005-12-28 12:10 |
| [#9144] Leak Club for Leakies or Leak user Gingers hing, I have no picture right now, will send to you tonight. Thnaks. |
conrad2002 正式會員 202.xxx.xxx.98 |
2005-12-28 12:17 |
