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Re: Do not be too quick to condemn the king of DHT's, the 300B

-- Are you really heartset on triamping? --

Yes. My drivers require 4th order filters and attenuation.
Passive does not sound as good to me with my drivers, mostly the midrange.

-- I personally think this mucks up the sound but to each his own. --

Your talking about the different sonic signatures of each amp creating a tone imbalance correct?

I could always use the same or very similar amps. What system have you experimented with using multiple amps?
Did you compare the multi-amped speaker with the same amps vs different amps? Where were these speakers crossed at?

-- Now 45 vs 300B.I've goofed with both these tubes for a while and they both are excellent.I think that the 45 is more detail orientated and the 300B is better all around.
I've had some fun with adjusting the operating points on both tubes,with the 45 not changing much in signature but the 300B changing very nicely. --

Does the 45 tube have mids like the 300B or does it give up warmth for detail? I have heard the 45 tube described as "gutless" by a lot of people, so i assume its not too good below the lower midrange. Is this what you mean by the 300B being better overall?

Do you think the 300B's strong points are the lower mids and bass?

-- I've run the 300B at 330v(270vgk)and running 20ma,10K load and I thought it sounded excellent at these points.I currentlty run my 300B's at 340v(280vgk) and with 40ma on the plate. They sound great and should last a long time at these points(Valve Art nickel plates,no WECO's as they are too exspensive for me). --

Thanks for sharing. I'd like to run my 300B's that way also to preserve tube life. Previously i was running them at 450V i think it was.

-- As for the others I thought the 71A sounds a little 2a3ish and I don't mean that in a positive way.The 811A I don't have a lot of experience with but from what little I have heard it came off as being a little sterile sounding.--

Thanks! 45 and 300B seem to be what i'd like to use then based on everyones comments.

thanks,
-Mark


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