boogiebehometh Posted June 24, 2006 Posted June 24, 2006 I guess contributing factors'll b stuffs like freq range of perfomance, whether w're trying to get a clean or rounded sound, slew, there were rumours of some special inductors where one polarity'd clips 1st n the harmonics n stray frequencies gotten out of those r somehow prettier...some say metal film is nice, some like cheap ceramic...how do u choose voltage ratings n stuffs X-' gosh, I'm confused already X-'<_<) any favourites/guidelines to share? :)
errol Posted June 24, 2006 Posted June 24, 2006 A lot less of the mobile phone "text speak" and the rest of us will not be as confused as you are. Most of us here just connect our black boxes and it just works, what goes on inside is not of much interest until it goes wrong. Probably the best place to discuss this sort of stuff is in the forums on www.epanorama.net .
paulears Posted June 24, 2006 Posted June 24, 2006 Hi Paul,I see you are studying electronic engineering - hence the enthusiasm for the content of the post. One thing I have noticed is that text speak and abbreviation do not work when used in conjunction with technical terms and processes. Although, as has been said - most of us prefer not to know what goes on inside, I thought I'd try to work out what you were saying I guess contributing factors will be issue like the frequency range of perfomance, whether we are trying to get a clean or rounded sound, slew, there were rumours of some special inductors where one polarity clips the 1st harmonics and stray frequencies get out of those are somehow prettier...some say metal film is nice, some like cheap ceramic... how do you choose voltage ratings and other things? So what are you saying - to be honest, I thought I'd got it then it ran away again. Talking about capacitors and their effect on frequency range is perfectly sensible since their properties are used to deliberately modify sound passing through them, especially when combined with R and L components. I suspect you are questioning smaller individual properties of different designed components and the perceived audio performance to get clean or (your term) rounded sound? Slew? Not sure how this fits here? Inductors that have polarity depended properties? Passing ac through an inductor would seem to me to not be polarity dependent unless you can choke it to make it unbalanced? I can't see how the result of this could clip the 1st harmonic - possibly attenuate it? As for stray frequencies getting prettier? As an engineering student, I would have thought you would be concerned with research data that can be evidenced, rather than descriptors such as 'prettier, clean, rounded, nice? Probably the Blue Room isn't the place for discussions like this as it isn't really a topic that has a back stage link. what is very clear, however, is that this just about proves that abbreviated text speak is totally useless at expressing technical terms in any meaningful way! Paul
SeanT Posted June 24, 2006 Posted June 24, 2006 Sounds like you need to ask on a hifi forum to me <_< Somewhere like here maybe - http://www.tnt-audio.com/int.html
boogiebehometh Posted June 24, 2006 Author Posted June 24, 2006 gosh, sounds like I'm at the wrong place :)) thanks for the links guys <_<
Tomo Posted July 2, 2006 Posted July 2, 2006 For the most part, the capacitor technology makes close to zero difference at audio frequencies. (Except that electrolytics are too slow) When you are trying to suppress harmonics, we are talking about low-pass and band-pass filters, the design of which depends on the 3dB point(s) and the required attenuation. We could get really complicated here and go into the difference between 1st, 2nd, and 3rd-order passive filters, but to be honest it would bore everybody (including myself) and you wouldn't learn anything of use. Talk to your tutors, especially your small-signal analogue tutors.
Modge Posted July 2, 2006 Posted July 2, 2006 Talk to your tutors, especially your small-signal analogue tutors. and if you can understand a word they say you're doin well!
Simon MFR Posted July 5, 2006 Posted July 5, 2006 All I'll say on this, is make sure that your inductors are positioned in opposite directions to one another or the signal interferance will do something odd to the signal....I've just finished building a 3 k passive crossover and I made this mistake first time around. A series of speaker/crossover/inductor calculators can be found here; http://www.mhsoft.nl/spk_calc.asp (very useful info) :D
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