OTL amps, my pick for the tube used.


This is my OTL tube pick for an OTL the 6C33C tube.
I don't believe much can compete with it for current, and that the big achilles heel of OTL's  

https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-1.jpg

https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-3.jpg

Just had to show this, in it's glowing glory.

Cheers George
georgehifi

Showing 6 responses by georgehifi

its been out of production for about 20 years. The tooling was destroyed with the plant
6C33 overloads the socket connections which can fail within the lifetime of the tube itself.

I’ve asked Mike Matthews for his views on this, from what I understood his factory in Russia has all the dies and tooling, and sell them on New Sensor and the sockets at reasonable prices much cheaper if you join and login.

https://shop.ehx.com/item/6c33/tubes-vacuum-sovtek/

https://shop.ehx.com/item/7big/
moofoo
6C33C I like the sound of these tubes - very clear, uncolored, balanced and almost no real sonic signature.
That’s why I like them also when well implemented. Because it’s the closest to great Class-A solid state I have heard from a tube.
(better hide, sure I’ll get flamed for this little outburst).
https://dw8stlw9qt0iz.cloudfront.net/8helUHVPvP20LeKbM_SlMzQnfMw=/2000x2000/filters:format(jpeg):qua...


Cheers George
I have no interest in any amp that can not do at least 200 watts.
Mike

And hey! I also have no interest in any amp that can’t drive speaker loads that can vary from 2-32 ohms without becoming a tone control.
I just started this post with those pics as they are more a work of art to me rather than listened to, been down that OTL path and with SE transmission tube as well, I will never go back there again.

Cheers George
However, as best as I can tell from some somewhat blurry rear panel photos I found on the net there is a 5 amp fuse located immediately adjacent to the ME amp’s pendant power cord.
Here is the ME1500 spec sheet for you Al (bmp) a bit clearer maybe.
https://ibb.co/2Fq1fPZ
https://ibb.co/HCYVmfk
https://ibb.co/XpsGYZQ

Cheers George


Also, I couldn’t find any detailed specifications for output power or anything else for the OTL-150 at the Navison site (just some references to "coming soon"), although that has no relevance to my posts in this thread.
Same here, I have no idea what he's looking at, or the relevance to the ME1500 doing 100amps either????

Cheers George
giving an output current of 3 amps into any load.
I know this is a good figure for an OTL, but I have to laugh when I look at the flagship models of my amps (100-amps continuous)

https://ibb.co/59M4ZZp

https://ibb.co/VHgjcXJ

We had a pair of these here https://img.ukaudiomart.com/uploads/large/1760474-jbl-array-1400-speakers.jpg driven by the big Fluterman OTL’s, and they were sucked dry on transients when we wanted some medium level out of them.

Cheers George