review33.com: 影音天地: Leak Club for Leakies or Leak user

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[#14189] Leak Club ~ 恭賀新禧 same to a relationship? :-) --------------------------------- just like relationship, sometimes we need to learn to have a better relationship:-) ultimate subjectivity starts with objectivity.		drwkng 正式會員 218.xxx.xxx.180	2007-02-20 11:38

[#14190] Leak Club ~ 恭賀新禧
Glad to have this to join my Leak family :-)
Thanks to Laucy :-)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 18:28

[#14191] Leak Club ~ 恭賀新禧
And this fish swam to my home :-)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 18:33

[#14192] Leak Club ~ 恭賀新禧
A pair of Fisher 70A.
According to Laucy, one can swim and one not :-(

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 18:35

[#14193] Leak Club ~ 恭賀新禧
To my surprise, the FISHER 70A has the same footprint as TL/12+ :-)

L@@K cute & sexy to my eyes :-)

It really shines after cleansing :-)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 18:37

[#14194] Leak Club ~ 恭賀新禧
Start to L@@K for 5881 :_)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 18:38

[#14195] Leak Club ~ 恭賀新禧
Gingers,

Your place must be getting real crowded :-)

ace_hayashi

正式會員
192.xxx.xxx.44

2007-02-21 18:42

[#14196] Leak Club ~ 恭賀新禧
Ace

A collector who collects .....................

:)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 18:50

[#14197] Leak Club ~ 恭賀新禧
Start to L@@K for 5881 :_)
_________________________________________________

GE Canada 1960's 6L6WGB=5881 Clear Top. Cheap and good sound :-)

ace_hayashi

正式會員
192.xxx.xxx.42

2007-02-21 18:54

[#14198] Leak Club ~ 5881
http://www.thetubestore.com/6l65881types.html

Facts you should know before purchasing:
25 Watt tubes such as 6L6, 6L6GB, 6L6WGB, and 5881 are rated for plate voltage up to 400 volts.
30 Watt tubes such as 6L6GC, 6L6WXT+, and 6L6WGC are rated for plate voltage up to 500 volts.
The KT66 tube type is a 25 Watt tube rated for plate voltage up to 500 volts.
----------------------------------------------

Then I think KT66 can be used in the Fisher 70A :-)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 18:56

[#14199] Leak Club ~ 5881
Sylvania 6L6GB Blackplate also cheap and good sound :-)

ace_hayashi

正式會員
203.xxx.xxx.66

2007-02-21 19:01

[#14200] Leak Club ~ 5881
http://home.mira.net/~kiewavly/TL25Plus.html

The Leak TL/25 is a very desirable power amplifier. The 25Watt power output is such that it is usable with modern speakers of today, but the design does not push power output to the limit - often higher powered valve amps seem to sacrifice sonic performance.

Surprisingly, the TL/25 Plus is on the same sized chassis as the TL/12 Plus (only the height differs for the taller power transformer on the TL/25 Plus).

In reality, these amps can deliver around 32 watts, hence the "Plus" designation in the name of this series of mono amplifiers from Leak.

Leak state that the output stage can use KT66, EL34, or 5881 valves, as the circuit uses "automatic" cathode biasing. Of course the sonic performance will vary with valve types.

As with all other Leak audio amplifiers wiring was of a very high standard, as was overall construction and finish. The amplifiers on this page are finished in gold-bronze stove enamel, which remains in great condition after 40 years of use. Also shown here is the under chassis view of the TL/25 Plus, which displays the overall wiring and construction. Many components show signs of wear and tear, and it is usual practice to replace all the signal capacitors, and possibly some resistors. Usually wire wound types such as those used on the cathodes of the EL34's in this amp survive well over the years and do not shift in value, although they may appear "tired" from heat (see the green resistors on the right side of the photo).

-------------------------------------------

Leak TL/25+, Stereo 50 & Stereo 60' the output stage can use KT66, EL34, or 5881 valves, as the circuit uses "automatic" cathode biasing. Of course the sonic performance will vary with valve types.

I never taste 5881 with my Leak Toys before. I think I should open another line for 5881 tubes :-)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 19:03

[#14201] Leak Club ~ 5881
5881

http://www.mclink.it/com/audiomatica/tubes/6l6.htm

KT66

http://www.mclink.it/com/audiomatica/tubes/kt66.htm

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 19:07

[#14202] Leak Club ~ 5881 & KT66
http://www.vacuumtubes.com/6l6.html

5881/6L6WGB

This tube was first developed by TungSol for the US Military. They are in short stubby glass envelopes. There is no difference between the 6L6WGB or the 5881, they are the same tube. The 5881 has a maximum plate rating of 360 volts at 23 watts and a maximum screen rating of 270 volts at 3 watts. DO NOT USE IN AMPS CALLING FOR 6L6GC's. They will likely melt down and damage your amp.

--------------------------------------

Type KT-66/7581 Tubes

The 7581/A tube is an industrial strength version of the 6L6GC which is also said to be the American equivalent to the British KT-66. The ratings 7581 are roughly the same as the 6L6GC while the 7581A has higher ratings. The 7581 has a plate voltage rating of 500 V--35 watts (5 watts more than the 6L6GC) and a screen rating of 450V--5 watts. The Philips/ECG 6BG6 that we have were made from Philips/ECG (Sylvania) 7581A parts and have the same ratings as the 7581A.

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 19:09

[#14203] Leak Club ~ 5881 & KT66
This tube was first developed by TungSol for the US Military.
-----------------------------------

Ace

Thanks for info regarding 5881. I don't know this tube.

I think TunSol should be good :-)

John

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 19:13

[#14204] Leak Club ~ 5881 & KT66
According to TubeWorld, the best sounding 5881 are these in order: Tungsol, GE Canada (Tungsol construction), Sylvania, GE, Philips

https://www.tubeworld.com/5881.htm

ace_hayashi

正式會員
203.xxx.xxx.71

2007-02-21 19:39

[#14205] Leak Club ~ 5881 & KT66
A UK gentleman just objected it to leave UK. End more than 1,000 GBP :-)

Gingers

正式會員
221.xxx.xxx.177

2007-02-21 19:58

[#14206] Leak Club ~ 5881 & KT66
Closed GBP 1321.20, about GBP 300 more than the close frame unit closed recently. Don't know go where, ID kept private. Going to HK? :-)