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04-11-2025, 04:48 PM
Hi Guys
Another context is the "hifi ideal" for tube PA design. In this ideal, grid-stops of all kinds are not needed. There is an assumption of ideal layout and ideal components, neither of which exist.
As TUT promoted since '95, the use of higher-value screen-stops will provide a great deal of protection to the tube and the OT. Fender and other builders who began during the Tweed era had either no screen stops or very low-value ones, which was okay in the context of avoiding clipping. When you go from a very low value to our standard 1k-5W (specified that way to encourage buying flame-proof wire-wound components), there will be a tone change. You can hear it in an amp like the SVT (which is riddled with poor design decisions). Players say the amp has its "loud tone all the time" and the biggest impact is the amp never "eats" tubes.
In a hot-running amp the 1k-5W protects the vulnerable screen which is constantly in peril due to the excess heat. Upside-down tubes do not help. The high-value screen-stops can make assessing OT tone easier, too.
Another context is the "hifi ideal" for tube PA design. In this ideal, grid-stops of all kinds are not needed. There is an assumption of ideal layout and ideal components, neither of which exist.
As TUT promoted since '95, the use of higher-value screen-stops will provide a great deal of protection to the tube and the OT. Fender and other builders who began during the Tweed era had either no screen stops or very low-value ones, which was okay in the context of avoiding clipping. When you go from a very low value to our standard 1k-5W (specified that way to encourage buying flame-proof wire-wound components), there will be a tone change. You can hear it in an amp like the SVT (which is riddled with poor design decisions). Players say the amp has its "loud tone all the time" and the biggest impact is the amp never "eats" tubes.
In a hot-running amp the 1k-5W protects the vulnerable screen which is constantly in peril due to the excess heat. Upside-down tubes do not help. The high-value screen-stops can make assessing OT tone easier, too.
