I know very little about tubes. My question is about tube rolling. In general, are older NOS tubes able to handle higher plate voltage than most modern tubes? In setting the idle bias with only a multimeter and bias pots, assuming that the answer to my first question is yes, is there any general rule of thumb on say 6BQ5/EL84 Telefunkens, Mullards, RCA and the like?

Good Day All.

Hi guys,

I am looking for a new sub to match up with my Ruark Preludes, a British 2-way floorstander with 6.5 mid-woofer and dome tweeter. Currently there are three contending companies.

1. REL-The R-205, the Q108E, and the Britannia B3. (though this one may be beyond my budget currently) I've heard the R-205 and was impressed, just leary of the small cabinet size.

2. Martin Logan- The Abyss, the Grotto and maybe the Depth. I haven't auditioned these yet.

http://www.gepco.com/PDF_files/Gepco_G9_Catalog.pdf

For those who may not have heard, Logitech has acquired Slimdevices. Press release here...
http://www.slimdevices.com/au_press_logitech.html

Lots of angst over this on Slim, and various other audio forums. I don't think this bodes well for us audiophiles, but the general music consumer niche may benefit. One possible upside will likely be development of a slick remote with color display. Time will tell.