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It is completely irrelevant how frequently an amp switched off and on if a soft start is made properly. A few years ago my friend and I, having the 6C33C based Lamms ML2 (where I do not like how the soft was working) , noted that we both change the output tubes once a year despite that I turned it on and of dally but the friend of mine ran it all year long, practically without shutting it down.

Cooling the 6C33C? The original Melquiades was running with natural convention and it was fine. The Super Melquiades quite packed inside and with all that it has in this chassis it getting too hot. The Super Melq uses a fan that outputs approximately 75% of its flow to the LF tube. It is, 1300 rotations @12DC with 26dB fan sitting at 9V. The fan is well decoupled from the chassis but still with a stethoscope it is auditable on the chassis. The way in which this fan works in the Super Melq’s enclosure make me happy, I initially though to put a thermostat in there but then realized that it is good keep running the fan all time.

The use external leaves on 6C33C is kind of completed. The 6C33C is not flat and has two diameters. It is not clean what diameters should be cooled, even with a forced convention. The Pearl coolers are fine but Bill’s cooler are half ass coolers and the type of the coolers that Pearl has very limited thermal conductively between the glass and the cooler. I had an idea a few years ago to press the 6C33C into a form and after it solidify to fill it with copper. So, what I would have is a flat contact (without the “nipples” that should be omitted and enlarged) between a copper sarcophagus and the glass. Then too the sarcophagus it might be attached any conventional cooling devise. This head-sarcophagus might be completely removable and might just “condom” the 6C33C.  When I designed the Super Melq holes around the 6C33C I thought that I might try to do it sometimes. I think it will be $300-$400 per single cooler… kind of pricey and not really necessary….

The Cat

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