Pinewood Derby Car Designs

12 #

Some time ago, to test it basically a triode particular, these turned out to be extremely poisonous to the point of allowing the design of a MC phono based on this single active element, resulting in a gain of more than 1,200 (out, however, high impedance, so it must find a volume of 100 K, manages the trick with constant impedance offered by the RIAA LCR, which in turn sees input impedance well below the 10K).





To realize this scheme had everything except the RIAA LCR at 10 K.
I began to get interested and able to provide inductors compose, but I found no one claiming to be able to realize what I needed, in the quality and specifications. In addition I was also discouraged by extremely competent people, who told me that he humiliated with the problem and had noted a considerable difficulty in developing such an object.
happened that fate put us into the clutches, because shortly thereafter, in the underground of sound esoteric, began to circulate the rumor that S & B, urged by Thorsten, was putting up the implementation of this component.

At that time the name S & B was not consolidated as it is today, and typically do not take into account components popped out of nowhere, without a way to test its quality.
But shortly before I tested the volume on S & B transformer, a "small" of the TX-102, designed to compete directly in size and price, with the equivalent model Sowter.
compared directly with the Sowter 9335 is better in all this, in materials, electrical measurements and, listening to the overall neutrality and excellent speed.




This had created in me some great expectations for the RIAA in the making.
After a short time, the story took a turn more favorable, a friend of mine booked a couple of RIAA in question, I thought, "if I can make me pay, I make him ACT!

Continued ...