2. amps-preamps
  3. 1186340777

ARC amps and 6550C Winged "C" small pins

Has any ARC amp owners experienced loose tubes in the sockets after replacing old 6550C Winged 'C' with new ones. The old tubes are snug and tight. The new ones fit quite "loose". Tubes came from Upscale Audio and were Cryo'd. However, i have ordered some 6550C from The Tube Store a few months ago and the pins were smaller than the originals i purchased in Jan. 2004. My Amps are Classic 120 mono's with GNSC Ref Upgrades. If those tubes were mounted horizontally in any of the VT series amps they would likely fall off.
What an odd thing. Tightning the little metal flaps in the tube sockets with a tiny jewler screwdriver is not very effective.
smoffatt

Showing 1 response by rlips

rlips
105 posts
 
I had the same thing, replaced ARC tubes with tubes from Upscale Audio, no problem. Then replaced the Upscale tubes with Tube store, the pins seemed a little loose in sockets.

In the end, I just left them in (VTM200) and they never gave me any problems.
More to discover