Crispy
The following psytrance is baṉned: All
I believe that he has a lorry full of dress-maker's dummies that he places in the venue.
Do you consider yourself an audiophile?
- Thread starter Doctor Carrot
- Start date
I believe that he has a lorry full of dress-maker's dummies that he places in the venue.
TitanSound
Mr Beardy Drummer
That's brilliant!
solids behave differently at different temperatures..... that's physics!!
gavman
pj slumpy
does the stiffness of the driver material not change as it's temperature rises, caused either by the flexing of the material or heat transmitted from the magnets?
e2a so changing the character of the sound we hear?
gavman
pj slumpy
this is essentially what i am trying to understand. is it more likely that my drivers warm up, again i say it's something i hadn't witnessed domestically before these speakers, or is it that the accompanying passive crossovers warm up?
because there is a distinct improvement after a couple of hours. if i think i want to listen to music when i come in, i leave it playing while i'm out
ATOMIC SUPLEX
Member Since: 1985 Post Count: 3
Do you think someone would design top of the range speakers that need to be warmed up to get their true sound? Pretty rubbish. How about a set of top of the range speakers where the sound changes over time? Crikey, that would be rather shit for say mixing or mastering.
I assume we are not talking about powered speakers, so the warming up of speakers would be from changes in temperature in the room. If that's from other equipment or people then it's a wild element that is not related. If this tiny change in heat then warped the speaker in some way, it would be a pretty damn shit speaker.
Yes the movement of molecules in the air from the movement of a speaker cone will technically make 'warmth', though this will happen instantly and would be so infinitesimal that you would notice neither a temperature rise or a change in sound.
There would have to be some actual physics involved to create a difference in sound. I can't see what this could possibly be.
gentlegreen
I hummus, therefore I am ...
There is already a precedent. My CD player takes several hours to warm up. I used to leave it switched on all the time.
I long ago decided that squeezing sound out of small devices was an inferior option, but I can well imagine why it might be so.
These things aren't designed into things, sometimes it's a compromise.
Electrostatics aren't going to be an option for many. My stacked quads only cost me £700, but very few people would want them in their house - and at some point I'm going to need to get some of the drivers re-built.
I long ago decided that squeezing sound out of small devices was an inferior option, but I can well imagine why it might be so.
These things aren't designed into things, sometimes it's a compromise.
Electrostatics aren't going to be an option for many. My stacked quads only cost me £700, but very few people would want them in their house - and at some point I'm going to need to get some of the drivers re-built.
editor
hiraethified
That is a spectacularly wasteful and pointless thing to do.
gentlegreen
I hummus, therefore I am ...
Perhaps one could use subsonic / supersonic signals to exercise the devices without annoying the neighbours ?
well i didn't say any of that. i did say i wouldn't be able to hear the difference and any difference ouwl dbe tiny and much outweighed by other factors. but the physics is there.... even a diamond changes it's nature if the temperature changes
Crispy
The following psytrance is baṉned: All
Well drivers are spectacularly inefficient things - only a % or so of the electricity is converted into sound energy, so they do warm up due to resistance. Rubber gets more flexible at higher temperatures, so yes you might get a slightly different motion of the cone for the same input, at different temperatures. Is there a physicist in the house?
gavman
pj slumpy
luckily i don't have neighbours. if i don't pre-warm, i have to find something else to do for a couple of hours instead of listening because the system sounds shit, relatively.
you can have music on in the house while you do other things, but if you try to sit down and listen something's missing for the first couple of hours. the soundstage is nowhere near as big, the whole 'spooky' imaging just isn't there. bass becomes more defined and more extended
you can have music on in the house while you do other things, but if you try to sit down and listen something's missing for the first couple of hours. the soundstage is nowhere near as big, the whole 'spooky' imaging just isn't there. bass becomes more defined and more extended
gavman
pj slumpy
is that more likely than passive crossovers warming up?
it seems so to me, but obviously i'm no physicist
gavman
pj slumpy
both my cd player and power amp are without on / off switches. they are designed to be left on all the time.
my pre-amp has a standby setting, and is also designed to be left powered up. all hifi pre-amps are designed to be left on at all times, they consume very little power.
big domestic solid state amps are known to give their best after running for an hour or so; they are generally too current hungry to be left on. i did once use my krell amp to heat a one bedroom house through the winter nights and mornings
editor
hiraethified
Sure you just haven't got a shit system? Having to wait two hours to get a decent performance of your hi-fi suggests that something is very wrong.
Crispy
The following psytrance is baṉned: All
Two good microphones and a laptop.
gentlegreen
I hummus, therefore I am ...
Come to think of it I don't think my Naim CD player has a mains switch - even on the back ...
bi0boy
Power User
I'm not an expert on audio equipment but of course sound is objectively measurable as it's merely movement of air - if you're hearing a different sound from the same LP, a suitable microphone would be able to detect this. I presume there are microphones that can function as "human ear emulators", so it would simply be a case of recording and comparing the microphone outputs at different time points.
gavman
pj slumpy
Sorry editor is a moderator/admin and you are not allowed to ignore him or her.
gavman
pj slumpy
can a microphone be as sensitive as a human ear... does it measure everything you perceive, as a listener?
ATOMIC SUPLEX
Member Since: 1985 Post Count: 3
Sorry, that wasn't directed at you, that was for the people who say they can hear a definite change in sound as the speakers 'warm up'. The Physics isn't there for speakers 'warming up' over a couple of hours due to play. Might as well just put a heater next to them.
It would make them incredibly daft and rubbish speakers if they noticeably changed the sound over a couple of hours.
ATOMIC SUPLEX
Member Since: 1985 Post Count: 3
Yes. Far far more sensitive in fact.
No. it only measures sound, which is what we are talking about.
A microphone will not measure any imagined difference in the price of your cable.
Crispy
The following psytrance is baṉned: All
It is more sensitive. We can record frequencies above and below those audible.
A computer is a better analysis tool because it doesn't hear things differently depending on what mood it's in or what it listened to previously. It allows exact like-for-like comparisons, unfiltered by the brain. Will tell you if there's a difference, but not exactly how that difference might be perceived.
Course if you have a load of peple in front of a sound system, you'll lose some high freqs as they're absorbed, / scattered. Soundwaves aparently move quicker through warm air. So perhaps that could account for some feeling of so called warmth. A closer perception of the music.
I'd imagine The velocity increase of propergating soundwaves in warm air in an average sized venue is probably negligable though.
I'd imagine The velocity increase of propergating soundwaves in warm air in an average sized venue is probably negligable though.
editor
hiraethified
Whyever not? There's nothing magical about sound waves.
