Leak Through-line II tuner...anyone?
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modge
Super Member
JACK GRAB IT!!
http://www.hi-fi-insight.com/leak-troughline-fm-tuner.html
Very nice valve tuner, sort after here.
http://www.hi-fi-insight.com/leak-troughline-fm-tuner.html
Very nice valve tuner, sort after here.
Last edited:
radioactive
tube gear fanatic
if you get it i know where theres a matching preamp for it 
stereofanboy
Addicted Member
Why, bolly? I thought anything with the Leak name was worth having. Of course, that's just an impression I have not based on personal experience with anything but the Sandwich speakers.
amptramp
Well-Known Member
Here is the schematic:
http://www.44bx.com/leak/Leak/TroughLine2_cct.gif
and here is the accompanying article.
http://www.44bx.com/leak/troughline.html
As you can see, it has a cascode front end for low RF noise and decent sensitivity, switchable AFC, switching of the B+ to the RF stage for local/distant sensitivity control, two IF stages followed by a limiter and a Foster-Seeley discriminator. It has direct multiplexer and cathode follower outputs. The tuning eye is a nice touch.
The claim to fame was the oscillator that used a semicircular cross section tuned line about 6" long with a line in the centre connected to the tuning capacitor in the oscillator. This was claimed to minimize drift although they did hedge their bets with AFC anyway.
I paid about $20 for mine. They eventually came out with a 3-transistor multiplexer that was not up to the standards of the rest of the receiver, but there are outboard multiplexers available from the early 60's that would be good. (Or you could excise the multiplex adaptor from a cheap boom box and add it on.)
http://www.44bx.com/leak/Leak/TroughLine2_cct.gif
and here is the accompanying article.
http://www.44bx.com/leak/troughline.html
As you can see, it has a cascode front end for low RF noise and decent sensitivity, switchable AFC, switching of the B+ to the RF stage for local/distant sensitivity control, two IF stages followed by a limiter and a Foster-Seeley discriminator. It has direct multiplexer and cathode follower outputs. The tuning eye is a nice touch.
The claim to fame was the oscillator that used a semicircular cross section tuned line about 6" long with a line in the centre connected to the tuning capacitor in the oscillator. This was claimed to minimize drift although they did hedge their bets with AFC anyway.
I paid about $20 for mine. They eventually came out with a 3-transistor multiplexer that was not up to the standards of the rest of the receiver, but there are outboard multiplexers available from the early 60's that would be good. (Or you could excise the multiplex adaptor from a cheap boom box and add it on.)
KentTeffeteller
Gimpus Stereophilus!
Tube Leak equipment is among the finest in the world. The TroughLine tuner is easily the best British tuner ever made. My wife still owns her example. Superb sounding and very sensitive. Worth beaucoup bucks used in nice shape. There's plenty of information on H.J. Leak products out there on the net. Google Leak TroughLine and you can likely find an updated MPX adapter which ours has. Really improves FM stereo performance. Ingjerd has owned her example since 1969. Leak and Quad in England are equivalent to Marantz and McIntosh then.
