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In the Forum: Melquiades Amplifier
In the Thread: A different breed of 6C33C amplifier.

Post Subject: The experiments very worth to undertake.Posted by Romy the Cat on: 3/14/2012

KOTriode. One of the reasons why I advance the idea of using 6C33C for sub 100Hz bass is because it is very easy to say objectively if it is enough power. You see, when you use 845 for instance the tube might jumps in and out if A2. Since it is DHT it will work more or less fine in A2 but each tube at each operation point, with each driver and in each way of being connected/powering will sound differently. There is nothing wrong with it but we greatly would attribute of use if each tube in A2 to the sound of the lower bass for this particular tube. With 6C33C it will be no ambiguity in sound: if it stays in A1 then it will sound as it sounds and if it reaches A2 then it must not be used for a given amp gain (efficiency of speaker + room size). So, I think to compare metrologicaly properly the lower bass between 6C33C and 845 we need to compare BOTH of the tubes in A1. It is not difficult to detect if ether of your tubes run in A1.

http://www.goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=6057#6057

Anyhow, I do understand how “simple OB with 6db roll off can easily rattle the windows” but in my view it is very different bass. I heard as large OB as largest Knlangfilm Bionors with both perm and electromagnets and even I do recognize some quality of THAT sound but I do not feel that anything below 50Hz is valuable for what I am interested. It might not mean a lot but let agree to disagree as my position about OB for lower bass is well formed. BTW, Reference Recordings in my view has a bit idiosyncratic bass. For sure it is impressive but not the bass that I would recognize as too musical. It is a bit overly-studio type of bass, I do like it but I do not find it to be my reference bass.

One more thing. Fell free to discard below – they are just the thoughts that pop up in my mind when I though about your loudspeakers. I am sure that Quads in MF do fine and the RTR ESL panels do fine as tweeter but I have a filling (and I might be very wrong) that in this configuration the upper range will have some dynamic challenge. If it is what you feel then I would try to use “dynamic injection”. It might be very hard to at HF but still might be possible. You might try to use different type of tweeters that have the “dynamic injection” built-in juts for experiment to see if more virtual dynamics in tweeter would be appealing to you. I do not want to suggest the models of tweeters at public forum as I know the ugly results of it but if you would like to experiment with “virtual dynamics” then contact me privately and I will pitch the tweeter for you. I personally do feel that if you add more dynamic tweeter above the Quads then you might make the Quad’s MF more fun. I do admit that more dynamic tweeter most likely will enrich the Quads but will not be VERY hard to make Quad’s FM and more dynamic HF to sound the same in context of one installation. Still, I think the experiment is very worth to undertake.

Rgs,
Romy the Cat

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