# Bruces TPU Theory and Experiments

Posted on Feb 5, 2014

SM is merely pointing out that the tube is capable of producing those frequencies. he talks about using TV tubes to get a better sound at higher frequencies. anyways it doesnt matter what we think he is saying. just experiment it and see if u get anything from those pointed ranges. it is the only way to be certain. Okay, the next tuning is that of the amplifier to the TPU. Once your TPU

is tuned according to the steps mentioned a few posts previous, you need to measure the impedance. This then is the impedance that your choice of amplifier must also be. IF THE amplifier impedance does not match that of the TPU there can be DISTORTION. And we all know by now what that means. NO CATALYST! Now as you know, I will be using a tube circuit. It was in the middle of being designed when Turbo released his wonderful compilation of additional material. I put a halt to the circuit until I could analyze all of the new material. "A derived unit of resistance, capacitance and inductance in combination is called impedance, although it is not a requirement that all three be included. Impedance is also measured in Ohms, but is a very complex figure, and often fails completely to give you any useful information. The impedance of a speaker is a case in point. Although the brochure may state that a speaker has an impedance of 8 Ohms, in reality it will vary depending on frequency" I am glad that "I am not in a hurry"! LOL For now my Tube guy will match the impedance of the amp to my "tuned" tpu AND to the correct frequency of 35. 705 KHz For those who do not yet understand the collectors can restudy SM`s clue of the engineering of the plane that broke the sound barrier, or reread my thread on the matter. I also found out that the "signal" from the Amp to the speaker travels at the speed of light. Some of you will understand...

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