Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-08-22 Thread Rick B .

Yep, they are hot water bottles.


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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-08-22 Thread whdean

They looked like hot water bottles to me, also ...

My reaction is that they were there to produce that elusive warm
sound.


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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-08-22 Thread haunyack

Shocking to see that none of the speakers are bi-wired.
Must be a Bose outlet.

.


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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-08-21 Thread superdus

LOL, those bag things that the cables are wrapped around look like hot
water bottles to me. I guess you don't see them around that much these
days? You fill them with hot water and take them to bed with you to
keep warm in the winter - that's if you don't have central heating, I
guess...

Rick


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[SlimDevices: Audiophiles] cheap tweak revisited

2007-07-22 Thread haunyack

This has not crossed my mind.

.


+---+
|Filename: wirejoke.jpg |
|Download: http://forums.slimdevices.com/attachment.php?attachmentid=3074|
+---+

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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-07-22 Thread Skunk

That wouldn't win any caption contests, IMHO. 

Unless someone can clue me in, I'm going to imagine they are bags of
snake oil.


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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-07-22 Thread haunyack

Skunk;216472 Wrote: 
 That wouldn't win any caption contests, IMHO. 
 
 Unless someone can clue me in, I'm going to imagine they are bags of
 snake oil.


Dunno 'bout that, I'm not sure myself...my first impression was that
electrons flow best at room temperature (snake oil).
Actually, the colder the better, so never mind.
Try closing your eyes and imagine the expanded soundstage...or better
yet, a sense of humor.


.


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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-07-22 Thread Skunk

haunyack;216476 Wrote: 
 
 Try closing your eyes and imagine the expanded soundstage...or better
 yet, a sense of humor.
 .

Ah, not being able to see the comic and imagining a sense of humor
works well. Funny comic.

Also, my soundstage is already too large- not to mention deep- so I'm
going more for the solidified and pratty sound now.


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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-07-22 Thread haunyack

Skunk;216477 Wrote: 
 Ah, not being able to see the comic and imagining a sense of humor works
 well. Funny comic.
 
 Also, my soundstage is already too large- not to mention deep- so I'm
 going more for the solidified and pratty sound now.


I'm sorry Skunk...does the .jpg not show?

.


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Re: [SlimDevices: Audiophiles] cheap tweak revisited

2007-07-22 Thread Skunk

The .jpg shows up fine, but I thought maybe I was missing the meme of
what those bags are supposed to represent. I suppose the humor is in
the fact that nothing in the bag could audibly affect the performance
of the speaker cable, unless it's ferrite chips maybe.Your suggestion
of closing my eyes and imagining it was funny worked well though.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-17 Thread haunyack

Club1820;215120 Wrote: 
 When is the last time you vacuumed?  Must have been awhile?

Well. I vacuum regularly? (weekly).
I've had my Vandy's for about 2 months now an it just occured to me to
vacuum the grill clothe.
First time.

.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-17 Thread Ben Diss

tyler_durden;215124 Wrote: 
 Flow or an object moving through a fluid is not the same a waves moving
 around an object.
 
 TD

Only in that the wave produces motion of the air in both directions.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread nelamvr6

You have you grills on your speakers?

While you're listening?


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread opaqueice

haunyack;214845 Wrote: 
 Dimples on a golf ball are symmetrical, therefore the effect of air
 pressure is predictable.
 
 If one could predict the effects of random occurrence (grime on a car
 finish, for example), that person could play the lotto and win every
 time.
 Random occurrence is the angst of statistical analysis.
 

It's not about prediction - despite the symmetry, even golf ball
dimples are designed mostly by trial and error.  It may be
counterintutive, but Tyler is right.  Rough surfaces create a layer of
turbulent air around the object, and that often lowers the overall drag
force.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread Ben Diss

opaqueice;214902 Wrote: 
 It's not about prediction - despite the symmetry, even golf ball dimples
 are designed mostly by trial and error.  It may be counterintutive, but
 Tyler is right.  Rough surfaces create a layer of turbulent air around
 the object, and that often lowers the overall drag force.

Sorry, guys.  I gotta call a BS on this.  A rough surface increases
drag.  Dimples and other effects that control vortices can improve
performance by managing air separation over the surface.  On airplanes,
we use vortex generators to do this.  Dirt on a car or airplane slow it
down.  I once read a CAFE study that tried to determine the performance
impact of waxing an airplane.  They concluded there was none, but
discovered about a 1% increase in top speed by removing bugs and dirt
from all surfaces.

-Ben


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread opaqueice

Ben Diss;214906 Wrote: 
 Sorry, guys.  I gotta call a BS on this.  A rough surface increases
 drag.  Dimples and other effects that control vortices can improve
 performance by managing air separation over the surface.  On airplanes,
 we use vortex generators to do this.  Dirt on a car or airplane slow it
 down.  I once read a CAFE study that tried to determine the performance
 impact of waxing an airplane.  They concluded there was none, but
 discovered about a 1% increase in top speed by removing bugs and dirt
 from all surfaces.
 
 -Ben

Rough surfaces increase drag *at the surface*, but they also can create
a turbulent layer of air at relatively low speeds.  The main flow
slipping around that layer can then remain laminar for longer and close
in more tightly behind the object, which sometimes means that the
overall drag is reduced.  My intuition on a piece of dirt on an
airplane is that it probably would slow it down, because one or a few
pieces of dirt are not going to create such a layer.  But if you really
dipped it in mud or something, who knows...  

Exactly what happens in some particular case is extremely difficult to
predict: http://www.claymath.org/millennium/Navier-Stokes_Equations/


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread tyler_durden

Now THIS is a thread!

TD


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread Ben Diss

opaqueice;214909 Wrote: 
 Rough surfaces increase drag *at the surface*, but they also can create
 a turbulent layer of air at relatively low speeds.  The main flow
 slipping around that layer can then remain laminar for longer and close
 in more tightly behind the object, which sometimes means that the
 overall drag is reduced.  My intuition on a piece of dirt on an
 airplane is that it probably would slow it down, because one or a few
 pieces of dirt are not going to create such a layer.  But if you really
 dipped it in mud or something, who knows...  
 
 Exactly what happens in some particular case is extremely difficult to
 predict: http://www.claymath.org/millennium/Navier-Stokes_Equations/

Controlling turbulence at the boundary layer may allow the flow to
remain attached longer, but it will not cause it to be a laminar flow
and it will not reduce overall drag.

For example, adding vortex generators to an airplane will aid in
control as the airflow remains attached at the control surface, but the
penalty is lower max airspeed.

-Ben


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread opaqueice

Ben Diss;214947 Wrote: 
 Controlling turbulence at the boundary layer may allow the flow to
 remain attached longer, but it will not cause it to be a laminar flow
 and it will not reduce overall drag.
 
 For example, adding vortex generators to an airplane will aid in
 control as the airflow remains attached at the control surface, but the
 penalty is lower max airspeed.
 

Well, you're probably right it won't help for teardrop shapes like
wings (and if you can prove it Clay has $1,000,000 waiting for you!),
but for less aerodynamic shapes such as spheres it really does work
that way.  Have a look at this very nice discussion:

http://www.aerospaceweb.org/question/aerodynamics/q0215.shtml


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread haunyack

nelamvr6;214901 Wrote: 
 You have you grills on your speakers?
 
 While you're listening?

Well yes, the grills stay on as they are virtually permanent.
My speakers are the Vandersteen 3a Signature and according to Richard,
the grill clothe is integral to the design.
Removal requires partial disassembly of the unit itself.

So as they are dust collectors, I now know that regular vacuuming is
required in order to keep the pristine sound.

As for laminar flow, it applies to an object moving through space, in
this case I would say that space (sound waves) are moving through an
object (grill clothe).


.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread nicketynick

Note to self:

Don't make any 'rocket scientist' jokes around here, you're likely to
upset a few people. Geez, what a crowd!


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread Anne

Well, I vacuum my electrostatics every week, this way they stay like
new, the panels dont accumulate dust and loose conductivity
prematurely.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread opaqueice

nicketynick;214980 Wrote: 
 Note to self:
 
 Don't make any 'rocket scientist' jokes around here, you're likely to
 upset a few people. Geez, what a crowd!

My all-time favorite Onion headline:

Suborbital Ballistic-Propulsion Engineer Not Exactly A Rocket
Scientist


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread Club1820

When is the last time you vacuumed?  Must have been awhile?


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-16 Thread tyler_durden

haunyack;214971 Wrote: 
 
 As for laminar flow, it applies to an object moving through space, in
 this case I would say that space (sound waves) are moving through an
 object (grill clothe)

Flow or an object moving through a fluid is not the same a waves moving
around an object.

TD


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[SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread haunyack

So I decided it was time to vacuum...I'm a bachelor so that is indeed a
somewhat rare occasion.

It occurred to me to put the brush on the attachment hose and vacuum
the grill clothe on my speakers.

Well, an improvement (no dbt to verify) in [audiophile adjective] and
[audiophile adjective] is immediately apparent.
Also the [audiophile adjective] became [audiophile adjective] with
greater [audiophile adjective].


Nice!
.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread Pat Farrell
haunyack wrote:
 It occurred to me to put the brush on the attachment hose and vacuum
 the grill clothe on my speakers.

You mean you removed a veil?


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread haunyack

Pat Farrell;214833 Wrote: 
 haunyack wrote:
  It occurred to me to put the brush on the attachment hose and vacuum
  the grill clothe on my speakers.
 
 You mean you removed a veil?
 
 
 -- 
 Pat Farrell   pfarrell (AT) bioinformatx (DOT) com
 www.bioinformatx.com


Quite right Pat.
A veil of dust.

.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread tyler_durden

You know, my car always seems to drive better when it's clean.  I
wonder if it is the same phenomenon...

TD


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread haunyack

tyler_durden;214838 Wrote: 
 You know, my car always seems to drive better when it's clean.  I
 wonder if it is the same phenomenon...
 
 TD

It's been proven that a layer of grime does reduce the aerodynamic
(laminar flow) properties of a moving object.
Vacuum excluded of course.
So, I agree that a layer of dust would interfere with the sound
pressure emitted from a transducer.

.


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread tyler_durden

Actually, at subsonic speeds, a layer of dirt would probably improve
aerodynamics by trapping a layer of still air against the body of the
car.  Air slides over air more easily than air slides over the car
body.  This is the reason why golf balls have a dimpled cover.  They
fly farther with the dimpled cover because of reduced drag.

TD


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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread Pale Blue Ego

So, you're saying parking lot dings improve overall performance?

I dunno; I've been using high-voltage electrical insulator wax on my
cars for several years, and they are so slippery if you lean against
them you'll slide right off.

http://www.amazon.com/845-Liquid-Insulator-Wax/dp/B000AP1JUA


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Pale Blue Ego

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Re: [SlimDevices: Audiophiles] Cheap tweak

2007-07-15 Thread haunyack

tyler_durden;214843 Wrote: 
 Actually, at subsonic speeds, a layer of dirt would probably improve
 aerodynamics by trapping a layer of still air against the body of the
 car.  Air slides over air more easily than air slides over the car
 body.  This is the reason why golf balls have a dimpled cover.  They
 fly farther with the dimpled cover because of reduced drag.
 
 TD

Dimples on a golf ball are symmetrical, therefore the effect of air
pressure is predictable.

If one could predict the effects of random occurrence (grime on a car
finish, for example), that person could play the lotto and win every
time.
Random occurance is the angst of statistical analysis.

.


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haunyack

Transporter - BK Reference 200.2 - Vandersteen 3A Signature.
RWA (Analog) SB3 - Rotel RB 1070 - BW Matrix 805.
Fridgidare - Mirror Pond pale ale - easy chair w/remote - irritated
neighbors.

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