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Post by rdr on Mar 29, 2022 20:34:47 GMT -5
Jump to about 13:50 if you want the meats.
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pdf64
Wholenote
Posts: 558
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Post by pdf64 on Mar 30, 2022 4:56:44 GMT -5
Separate amp heads and speaker cabs are much better for valves. Combos tend to be something of a multi action torture chamber for their valves.
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Post by Jim D. on Mar 30, 2022 9:42:27 GMT -5
rdr: Thanks for posting that. I found it quite interesting and informative.
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Post by rdr on Mar 30, 2022 20:09:18 GMT -5
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Post by larryguitar54 on Mar 30, 2022 22:17:30 GMT -5
Do you think it actually helps? It seems to me the vibration should come through the chassis, the sockets and ultimately into the filaments. However it does make sense putting some sort of gasket in the socket might absorb some of that.
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pdf64
Wholenote
Posts: 558
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Post by pdf64 on Mar 31, 2022 4:44:36 GMT -5
I think that the air borne sound pressure wave from the speaker cone is the most significant such force acting on valves in a combo. Because generating sound pressure waves is what they’re intended to do.
I’ve seen a Gibson GA20 from 1957 whose valve sockets have anti vibration mountings.
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Post by rdr on Mar 31, 2022 10:52:18 GMT -5
I wonder if with the addition of springy rings under the sockets, in the retainers, and around the tubes could change the system resonance to where the tube would vibrate more.
I suppose Dr. Z has enough experience to be able to say it's protective.
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