Chris This thread has just had me scurrying up into the loft! Bingo! Five used Mullard EC91s. Quite a few ECC91s as well which alas I'm pretty sure are not...
I''ll sort through my old files and dig out the circuit after the weekend. (We happen to be away for a flying visit to some friends in France.) I'll post the...
Thanks Glenn I will follow your prescription :-) And if I find a specialist I will ask him if he thinks it is an improvement before all. ... 52KU 5AQ4 5V4G...
That will be interesting to follow Chris. Have you worked with special quality versions or VHF double triodes like the E88CC and does it follow that variants...
I have a sneaky suspicion that whlst valves are pretty much linear, they are not always used at their designed operating point. I much prefer the sound of the...
Hello! Here's a good starting point: http://www.dc-daylight.ltd.uk/Valve-Audio-Interest/QUAD/QUAD-405- Modification/QUAD-405-Mods.html The 405 is VERY easy to...
Hi, I am guessing i might have a tube going, but i have a Lectron JH-30 and a Sony es CD player driving a pair of Quad 988's. Yesterday i noticed the volume...
That is a rapid change. Any distortion? Heaters glowing evenly? If you suspect a tube is going and take a look in dim light you might identify one (maybe a...
Fred, They are EL-84's and all seem to be burning evenly. I do get distortion when i turn the volume pot all the way up, but i am still only getting about 58...
Looks to have a solid state power supply and FET + Bipolar transistor stages preceding double Push-Pull EL84 outputs per a Lectron JH-30 link I found -...
In a message dated 12/7/04 6:20:04 PM Pacific Standard Time, ... Thanks Fred, That's what i was afraid of. Figures it couldn't be as simple as a bad tube. ...
Hi, Spotted by Bart Yee on the LS3/5A group - there are 2 x QUAD 50D mono-block amplifiers available for a very reasonable price of £85 each (plus VAT) on ...
Hi Dave, What's the different between 50D vs. 50E? Rgds, KY Lee ... mono-block ... VAT) on ... if you ... ViewItem&category=68247&item=5736171995 ... ...
Hi :-) The 50D is the BBC version of the E, it has an 11 pin output plug instead of 17 for the E. It has fewer loads to choose from, i think it is three !?! I...
KY, The QUAD 50D is an earlier model with a slightly different output transformer (with less taps). The output sockets are slightly different too - so you...
The BBC used QUAD 50Ds and QUAD 50Es. Two of my four QUAD 50Es came out of a BBC studio. Dave. ... From: maceuvebrant@... [mailto:maceuvebrant@...] ...
Yes Barry, that's the problem with exotic equipment combining unusual approaches to circuit design with visual and sonic appeal. The fault could prove to be...
... Sorry I came into this late. I went back through the archives and read the previous posts. I suggest that you contact Lectron directly by phone or email....
Hi all Just wondering if anyone has used Quad II's with any Tannoys. I've been thinking about this for a while. I'm using LS3/5a's currently & don't think i...
HI I use the Quads with my Tannoy 15 inch Monitor Golds,the sound is full bodied and the midrange and vocals are fantastic. I would like to try the Quads with...
Hi Rajiv Thanks for you reply Is there anything about the Tannoy's that are bright? hard/brittle etc? Have you ever heard any of the Tannoy Pro Dual...
HI Beverly I have not found the Tannoys to be bright or edgy with tube amps,but they can sound very bad with some solid state amps.I have used them with a...
Hi Bev I used to have a pair of Monitor Golds in Lancaster cabinets. Sounded very nice with the Quad IIs but totally dominated the room so they had to go! Paul...
I used Quad IIs with a pair of Tanny 607s for about 10 years, until I switched to ESLs. IMO very highly recommended. ... __________________________________ Do...
Hi group, currently my 16 uF micro farah condensor capacitor (450V - supply to GZ32)is not working. Any one has a suggestion of the cap replacement, brand or...
Hello! I use the LCR 32+32uF with good results. You will be very happy when they finally open up...your IIs will be sweet as sugar :) You might also put a...
Dear Toms, Thanks. I will take you recommendation to replace the 16uF cap to JJ 32uF+32uF 450v cap, add on a 0.1uf bypass 400v Merry CHristmas & Happy new year...
Hi All, Happy Christmas to all the members of the Leak, Quad Groups, and may your valves/tubes glow bright and healthy in 2005 (well the filaments and not the ...
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