Thanks guys for the compliments. I seems I have done something wright. 😀
The sound of it is just amazing, you can see on the last picture between the rack and the speaker my old original F5. The comparison between these two amps and the results for me turns out to be tremendous.
The most important difference is the much better three-dimensionality, the stage is much wider and deeper. Instruments, details are much better to localize.
@bcmbob: the speaker you see there is a full range backloaded exp. horn. using the TangBand W8-1772.
I'm driving the whole system without any active preamp, only the B1... and the power of the F5T just blows me away... if I want 😉
@ WalterW: Yes, rail voltage is 32V each. The whole amp is dead silent, no hum, not with an ear on the speaker either an ear on the toroidal.
The sound of it is just amazing, you can see on the last picture between the rack and the speaker my old original F5. The comparison between these two amps and the results for me turns out to be tremendous.
The most important difference is the much better three-dimensionality, the stage is much wider and deeper. Instruments, details are much better to localize.
@bcmbob: the speaker you see there is a full range backloaded exp. horn. using the TangBand W8-1772.
I'm driving the whole system without any active preamp, only the B1... and the power of the F5T just blows me away... if I want 😉
@ WalterW: Yes, rail voltage is 32V each. The whole amp is dead silent, no hum, not with an ear on the speaker either an ear on the toroidal.
congratulation - excellent work.
The manufacturer of your transformer
Aktualno?ci - TOROIDY.PL Transformatory Toroidalne Producent, Audio, Separacyjne, Trójfazowe, 230/110V, 110/230V, Na zamówienie
is new for me. Maybe of interest, if quality standart similar to the transformer parts from
Tauscher Transformatoren GmbH
What about mechanical hum?
Several toroidal transformers suffers under this issue if DC is present at the mains - go to
http://www.diyaudio.com/forums/soli...oidals-summary-most-interesting-comments.html
What means kuF? I think, that you mean mF (1mF = 1000µF).
@ tiebassuebertr:
I'm really happy with the performance of the toroidals, absoulte ZERO mechanical hum!
kuF means: k as short cut of 1000, u as the short cut of micro and F as the short cut of Farad
176k is 176.000
uF is micro Farad
--> 176.000uF or 176mF or 0.176F
Correct?
I'm really happy with the performance of the toroidals, absoulte ZERO mechanical hum!
kuF means: k as short cut of 1000, u as the short cut of micro and F as the short cut of Farad
176k is 176.000
uF is micro Farad
--> 176.000uF or 176mF or 0.176F
Correct?
Mallard & Tief are both nearly correct. Never place a decimal point in the middle of a number that has no significant figures after the decimal point. You can use a comma separator between the thousands, but that can be confusing to those Members that use the comma as the decimal point.
Now look at the various ways of writing that and choose the one that is easiest to write and confirm, to yourself, it is also the easiest to read without ambiguity or confusion.
176mF is the best way to write this value.
Easy to write and easy to read.
Now look at the various ways of writing that and choose the one that is easiest to write and confirm, to yourself, it is also the easiest to read without ambiguity or confusion.
176mF is the best way to write this value.
Easy to write and easy to read.
Always amusing to see SPICE models with ".params" which go on 8 figures past the decimal point.
Perhaps a lesson in accuracy and precision are warranted.
In windows computers <ALT>230 will generate the character µ and avoid all confusion.
Press and hold <ALT> key while typing 230 on the numeric keypad. It does something else if you use the numbers on the main keypad.
Press and hold <ALT> key while typing 230 on the numeric keypad. It does something else if you use the numbers on the main keypad.
Cool - remember seeing that often but never really had a practical application for their use. Now I'm gonna study hard and become an ASCII ACE. 😉
Last edited:
Well, in fact significant figures are significant figures, decimal point or no. So 0.176F is the same as 176mF or 176,000uF as far as significant figures are concerned. Even 176kuF works, though I agree it's a bit awkward. So long as there are only 3 significant figures in the number, it can be expressed however you like. I don't like using millifarads (mF) b/c it is used very infrequently in manufacturer's specs (how many 10mF capacitors do you see, vs 10,000uF?). Plus, I've seen mF used to refer to uF, making it all the more complicated.
Back to your regularly scheduled programming...
Attachments
000 after the decimal point are NOT significant figures.
The 1, 7 and 6 are the three significant figures that need to be considered and conveyed as information to other technical readers.