bkrpdx

Responses from bkrpdx

Audio Research M100 Thumping
I exchanged emails with Kalvin. He suggested switching out the output tubes and all of the fuses and running them for a while. I did that, and about five hours in, they really sound fantastic and seem to have no issues. I think these amps sound be... 
Best 5 engineered rock albums?
Whatever you may think of the music, I think the Hole Celebrity Skin album is fantastically engineered.For something completely different, Alan Parson's Project, I Robot. As the guy who did so many other albums, such as Pink Floyd, his own is bril... 
Audio Research M100 Thumping
Thanks for the good advice. Anyone know of an authorized ARC tech in Portland, OR?This morning I went to test if the tube switch had worked, and it blew a fuse. I switched the fuse from the other amp, and the amp seemed fine. Not sure why it blew ... 
Audio Research M100 Thumping
conrad-johnson pv11 pre-ampPSB Imagine T TowersMcIntosh MR67 TunerDual CS508The problem followed the amp. I did notice the output tubes were a mixture of 6550s and KT88s. I replaced them all with a different set of 6550s which I knew worked and re... 
What music do you use to assess your system?
I like to use the opening of the vinyl LP Genesis, A Trick of the Tale. It has a nice, broad range of notes. Bad, digital listen here: http://www.youtube.com/watch?v=kJIVuinJlsUB. 
Svetlana v. Genalex KT88 Tubes?
Thanks for all the responses.Elevick, "blow" may be a poor choice of words -- more like "fail" or "short." Definitely normal; the manual even reads:"If an output tube shorts, this circuit will turn off the amplifier’s main power supply by tripping... 
Svetlana v. Genalex KT88 Tubes?
I should probably mention they are new, Russian-made Genalex tubes, not originals.B. 
Radio Hum
All the tubes have now been replaced, a solder ground repaired, and a blown cap replaced. On a reference system, the preamp is now silent. I bought a new, shielded power cord. My amps were just cleaned and serviced by c-j. The major right side hum... 
Radio Hum
Thanks for the response.I have connected the right preamp output to the other monoblock (call it left), and the hum follows it. Connecting the left preamp output to the original monoblock (call it right) results in no hum. So it is not the amps. I...