The contact patch of a circular-cross-section tyre is roughly elliptical so it easily disperses water.
A car tyre is different so the tread is there to prevent aqua-planing, as everyone knows. A bicycle tire can't aqua-plane.
A motorcycle tire probably can't either but I guess the fatter the tyre is and the faster it rotates the more likely it is to do so.
It must be the smaller contact area and lower speed then I guess, as motorcycle tyres can definitely aquaplane.
Mac mini > AVI ADM9Ts
Thanks makka. These are Contis, and the treads are only about 1mm deep. You're right, though, I've probably had them on every way, never noticed the arrow until the most recent episode.
If these are road tyres, I shouldn't worry. The tread is probably purely cosmetic since tread is unnecessary on a road tyre.
The idea behind directional tyres is the rear needs traction whilst the front steers. MTB tyres are often available in pairs of front & rear while road ones are identical but reversed. Tread on road tyres is fairly pointless until you hit wet mud in a corner otherwise you have to be going over 60ish mph for the tread to shed water & stop aqua-planing.
What's even more pointless is tread on brake blocks - all it does is retain small stones that score the rims.
"The optimist proclaims that we live in the best of all possible worlds - the pessimist fears this is true."
James Branch Cabell
MAIN: Apple TV2, Mac Mini & iTunes Match, CA Azur 751BD or Panasonic P42V20B into audiolab M-DAC, feeding a Primare A34.2 via XLRs, 2x 5m of Atlas Ascent 2 firing up Totem Arros.
ON THE HOOF: iPhone 5S/Sennheiser MM450.
So...what consitutes a good cable?
I don't claim to know the answer, but here's a man who knows as much about audio cables as anyone I've read on the subject:
His conclusions aren't, well, conclusive.
What classical music are you listening to?
Good analogue cables don't add any noticable distortion so they will all sound the same because they can't make the original signal any better than it already is.
Bad cables that do add phase distortion can make it worse though and I suspect this is what often gets mistaken for an 'improvement' with some of the overpriced audiophile cables.
This hits the nail on the head for me.
Poor cables can hold a system back and good cables will let the signal pass through without fuss or colouration.
The sound changes whenever there's an excessive amount of either capacitance or inductance so any cable that doesn't have an excessive amount of capacitance or inductance will do the job without adding any audible distortion.
The link that I posted explains how and why this happens but all that you really need to know is that oxygen free copper cables will work perfectly provided that they are of a thick enough guage and not excessively long.
You can use silver cable too but the same rules apply to this as with copper. Provided there isn't an excessive amount of capacitance or inductance there won't be any audible distortion so they will sound the same.
Copper cables will work just as well as silver cables and will sound identical (provided there isn't an excessive amount of capacitance or inductance). As copper cables cost less than silver cables you're better off using these.
PC > AVI Neutron Five 2.1
Sony NWZ-A847 64GB Walkman > Westone UM3x
Another thing to bare in mind is that if there's any EM interference then you may need to use shielded cables. This is more likely to be a problem for interconnects rather than speaker cables though.
Great cable AND tyre information!.. All in the same thread...
Trust your ears, but have a good think too.
TRUST YOUR EARS ........!!
But what a phool believes ... he hears
No wise man has the power to reason away
- With apologies to The Doobie Brothers
No doubt you've seen those line drawings of optical illusions - they are fairly entertaining & give a glimse into the inner workings of how we process data. At the minimum they show that things are not quite as simple as expected. From this example, I'd suggest that ALL our senses can be fooled to some degree including hearing. Consider a noisy party where many are talking yet we are able to somehow block out much of the extraneous sounds & hold a conversation. Not an example of fooling as such but illustrates the complexities involved.
Most of our perceptions happen not with our sense organs but in our brain where a great deal of filtering of uneeded data allows us to make out our surroundings pretty efficiently. I used to think that my hearing was consistent & the idea it could be fooled - impossible, I now know this is not the case. Many changes we hear are generally pretty subtle - it's not as though we are talking about going from not being able to understand speech to be able to understand it. Reality is experienced as a heavily filtered time-delayed illusion & a damned clever one at that! It feels so real.
I'm far from being an objectivist - if was, I would have spent a fraction on Hi Fi equipment but having a technical background does mean a degree of understanding of was is probable & what isn't. This allows me to concentrate on proven concepts before exploring the more left-field ones without dismissing them utterly as some seem to. Ultimately, it's my ears I listen with. Looking at measured data is a chore, not a pleasure, despite understanding much of that data & knowing how it was obtained. It's not as though looking through measurements gives much of an insight on how something will sound - not to me anyway. I invite you to rethink the idea that your hearing can't be fooled - I say if it wasn't capable of being fooled, music would be meaningless.
Thats the thing, is it cost or construction?
and the ignorant just try to hide their ignorance with really really weak sarcasm...no its not even that, I have challenged you and others to prove my points and have also been willing to make a wager. Wise men....prrrft!
busb, I read you - but consider this - you have a system on it you play the same track over and over again - as the system warms the sound changes, subtle changes maybe. But from cold you hear the bass becoming fuller, vocals more projected instruments becoming more realistic with a fuller tone. Are we to believe this is not real, we the listener are only fooling ourselves - creating our own illusions.
That maybe we are just getting into the music or is the reality that performance does change and the system does change the presentation of the music its playing as it gets to its optimum tempreture?
Maybe it depends on the quality of your speakers - maybe with poorly designed speakers you really cannot hear any difference or maybe the listener really needs to get a match and give his/her ears a clean.
To expand you listen to your system (its fixed) one track - you notice a triangle left of centre its clarity striking, you hear a hand clap outside of the right speaker only, it sounds like a hand clap - you change nothing more than a cable suddenly that triangle does not sound so sharp, the hand clap sounds more like a slap on a table, distinctly different than what you heard a few moments before....you must dismis that down to your ears fooling you?....seriously?
People accept it, have faith in your ability to differentiate changes in sound....... it does not make you a wizard or a witch and no one will be knocking at your door to burn you at the stake.
Have just been reading a thread over on PFM: "The cost of leaving your amps on all the time" - interesting mixture of responses & justifications for doing so. A similar subject - I generally no longer leave my stereo powered up & plug my already frugal power amp into an RF controlled remote switch as the on/off switch is inaccessible. I'm not sure how much time the various components take to reach optimum SQ because I'm too busy listening to the news or watching a TV program before I start listening to music. A particular track does not sound identical every time I listen. This can be down to how alert, distracted, etc I'm feeling or maybe mains "quality" - I'm less convinced of the latter. Not only that, some tracks I have to be in the right mood for so my enjoyment of music varies - enjoyment is an emotional state - to the extent that I often can't keep still. This enjoyment eclipses the small-scale potential differences between either burnt-in or fully warmed up equipment - because it doesn't matter! Equipment is merely the means & not the end! Good equipment like mine & no doubt yours only ices the cake - it certainly doesn't turn bad music into good.
I played a trick on a friend not so long ago. I'd bought a new set of interconnects & pretended to swap them for an older pair then back again a couple of times. My friend definitely heard an improvement when I supposedly used the newer ones. I did lead him on deliberately by saying how much I preferred the newer set. I kept my mouth shut otherwise. There was a slight difference but very, very subtle, unlike changing amps - that did make a difference. The friend owns a decent system as it happens. Can I say if I'd done this to you, you'd not have noticed? Of course not but it did illustrate the concept of expectation bias rather well in this case. Trust your ears certainly but only up to a point. I don't fully trust mine but they sure as hell enrich my life!
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