marktaylor22fb

Responses from marktaylor22fb

Tube amps for classical music FU29 vs EL34
As I remeber Jadis used KT-88's in the origional amps and they pushed the hell out of the tube, thats why the Chinese KT-88 did not hold up since it was really rated for 35 watts plate dispation and the screen was 4 watts.The best choice of tube w... 
tube or tube-like amp recommendations?
Same old same old !Tubes VS Transistors its like comparing apples to pine apples, both have their merits and pit falls, I use an old Dyna ST-400 at 250HZ down in a biamped system for driving my EV-18's sub, the tube amps are MC-60's that are cross... 
Dynaco St70 Static
I have restored over 50 st-70's and common problems are if its a kit form unit cold solder connections and poor quality output sockets per EL-34's can cause static noise,you have had some very good advice on replacing selenium rectifier, I have al... 
Differences between 6922 and 12AU7?
6922-6DJ8 indrustral a frame grid tube used origionaly for UHF the tube was never design for audio use some like the plate curves since the are pretty even.There is no magic to this tube as some think and as I remember it has a higher gain than a ... 
Anyone Bi-amping with tube high & solid state lows
This approach gives the best of two worlds,the transistor amp will produce better low end response and the tube amps will produce sweet mids and high's My system is set up this way and my lows are crossed over at 250 hz down my tube amp are set at... 
Where do tubes matter most???
Its a discussion that has gone on for years since the advent of transistor from bell lab's, one a transistor is a current device, a tube is a voltage device, most transistor amps are directly coupled to the reactive speaker load and thus can produ... 
Tube Biasing in Amplifiers
Most likely the tubes you have obtained do not quite fall into the required bias to plate curve, the total ma for the circuit is 120 ma with the 4 EL-34's which as I remember from reading Manleys Book the plate voltage is around 500V on that amp a... 
Tri-amp with stereo SS on bottom / tube monos top
Yes This can make for a plesent listening system, I use 2 mac 60's 2 mc-75's and 4 dyna MK-3 along with an old Dyna 400 on the bottom, gains are easy since I use equalizers rather than cross-overs I can also play my Dolby 5.1 system for movies, I ...