In Reply to: Type 50 Monos posted by vacuumtube1954 on April 28, 2012 at 16:19:53:
Thanks
These amps started as 45s. Because my speakers are not quite efficient enough to really let he magic out, I found some 50s to play with. I was starting up a foods plant and had some over time money in my pocket at the time...they were a bit pricey...
All of the power iron is Hammond while the audio transformers are all Lundahl. Kevin at K&K had a couple of rev A LL1692a Interstage trannys that he let me have cheaper because they had a weird pin out.The output iron is a couple of LL1663 gaped for 50 mA. One mono is AC heated and one is DC heated. I did this so I could compare the sound while I tweeked the DC supply...worked well.I'm running the 50s gently at around 50mA and 380 VDC on the plates. I'm driving the ITs with a single 5842/417a..amazing little tube. The 50s really have a special sound..glorious mids, good thump and sweet high end.I have used these puppies as a reference for my other projects. (other amps in the picture)...
Stuben
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Type 50 Monos - Stuben 04/30/1204:39:08 04/30/12 (15)
- RE: Type 50 Monos - vacuumtube1954 15:20:44 04/30/12 (1)
- RE: Type 50 Monos - Stuben 17:14:34 04/30/12 (0)
- RE: Type 50 Monos - vacuumtube1954 13:49:01 04/30/12 (3)
- RE: Type 50 Monos - Stuben 17:27:23 04/30/12 (2)
- RE: Type 50 Monos - vacuumtube1954 14:30:32 05/1/12 (1)
- RE: Type 50 Monos - Stuben 15:00:15 05/1/12 (0)
- RE: Type 50 Monos - drummerwill 08:53:45 04/30/12 (8)
- RE: Type 50 Monos - Stuben 10:07:24 04/30/12 (7)
- RE: Type 50 Monos - dave slagle 19:32:48 04/30/12 (0)
- Don't Forgret The... - Gerry E. 10:50:53 04/30/12 (5)
- RE: Don't Forgret The... - Stuben 11:26:53 04/30/12 (4)
- RE: Don't Forgret The... - Sidewinder 17:25:51 04/30/12 (3)
- RE: Don't Forgret The... - Stuben 15:07:14 05/1/12 (2)
- Thanks. I'll wait for the files NT - Sidewinder 20:46:48 05/1/12 (1)
- RE: Thanks. I'll wait for the files NT - Stuben 14:41:06 05/18/12 (0)