American Sound AS-2000 Installations- Far East (Tango)

[spiritofmusic]

So Dave, please explain.

The AS keeps as perfect time as one could want (confirmed by Christian's findings on this matter that he reported on).

It's a big massy design w amazing frictionless air bearing.

Installed on massive vibration conquering Stacore or Nothing Rack.

And despite all this, you're telling me a thread over belt has a definite effect on SQ.

How? Why?

 

[ddk]

Funnily enough I knew the blood knot well as an angler myself but wondered how you get away with overhand loop at the join? Does it not cause a minute extra wow/flutter each time if moves around the motor drive wheel? I have thought of a great product I know of that can make this become seemless.

It's a tiny knot and the thread is relatively loose, there's no side effect from it. Let me know when you make that seamless thread Bill.

david

 

[ddk]

So Dave, please explain.

The AS keeps as perfect time as one could want (confirmed by Christian's findings on this matter that he reported on).

It's a big massy design w amazing frictionless air bearing.

Installed on massive vibration conquering Stacore or Nothing Rack.

And despite all this, you're telling me a thread over belt has a definite effect on SQ.

How? Why?

The solid belts I supply are already extremely good but the smaller diameter of the thread interferes that little bit less with platter rotation so it's spinning even freer benefiting from all the engineering you mentioned above Marc. Of course one's system needs to be up to revealing the small difference.

david

 

[spiritofmusic]

This makes little sense Dave. Christian showed the video of his speed indicator in real time. It was locked on at 33.333 for a long period, the odd fluctuation +/-0.001 every several seconds. Inaudible to the human ear. Are you telling me the string will iron out that +/-0.001?
Hey, next you'll be recommending an upgraded pwr cord to the motor. That will help "smooth" things too.

 

[Steve Williams]

If David ever recommends another power cord other than Ching Cheng I’d be shocked

 

[bonzo75]

If David ever recommends another power cord other than Ching Cheng I’d be shocked

Ching Cheng SE

 

[ddk]

This makes little sense Dave. Christian showed the video of his speed indicator in real time. It was locked on at 33.333 for a long period, the odd fluctuation +/-0.001 every several seconds. Inaudible to the human ear. Are you telling me the string will iron out that +/-0.001?
Hey, next you'll be recommending an upgraded pwr cord to the motor. That will help "smooth" things too.

It's not a matter of ironing out speed fluctuation in fact you might see even a little more of that with thread it's how it maintains the speed which is important. If you go by measurements alone a low end DD could beat all belt drives and we know how they sound.

As for audiophile power cords and motors that's all yours to own !

david

 

[Steve Williams]

I heard the SE version of that power cord boosts its price to just over $5 USD. gotta get a grip on inflation

 

[spiritofmusic]

Ching Cheng carefully balanced on CS Footers will do it.

 

[spiritofmusic]

Dave, you're happy, I'm happy, the world goes around.

 

[ddk]

I heard the SE version of that power cord boosts its price to just over $5 USD. gotta get a grip on inflation

Tang has the SE versions, Ching Cheng's with ground pins removed !

david

 

[PeterA]

This makes little sense Dave. Christian showed the video of his speed indicator in real time. It was locked on at 33.333 for a long period, the odd fluctuation +/-0.001 every several seconds. Inaudible to the human ear. Are you telling me the string will iron out that +/-0.001?
Hey, next you'll be recommending an upgraded pwr cord to the motor. That will help "smooth" things too.

Marc, I suspect it has nothing to do with speed accuracy or consistency, but rather the mechanical interface between the drive pulley and the massive platter. It is about how the contact is made and it might manifest itself in lower noise, less vibration, etc. I'm sure it is minor, but audible under the "right" circumstances or David would not go to the effort.

 

[dan31]

Common knowledge that different belt materials can make a difference.

The string drive is moving closer to a non elastic transmission of drive to the platter.

 

[spiritofmusic]

Any issue w the knot causing a hump in noise transmission?
Is it possible to get a continuous loop of string w no knot?

FWIW, I'd love to hear the Spec GMP 8000 string drive tt w 16" gunmetal platter. This design warms my soul.

 

[dan31]

Knotless is tough. You could splice a multistrand string but you would still have a small hump instead of a small knot.

Mylar tape is popular for a less elastic belt.

 

[Audiophile Bill]

I have a good plan for knotless guys - will try this evening. I am a mad keen angler when not doing hifi so know of some seriously crazy stuff that can be used. Hehe.

 

[spiritofmusic]

Bill, for our sakes, don't tie yourself up in k....

 

[Audiophile Bill]

I have a good plan for knotless guys - will try this evening. I am a mad keen angler when not doing hifi so know of some seriously crazy stuff that can be used. Hehe.

Okay just built my first prototype. I have measured it too using the rpm app on iPhone. I have improved both the speed accuracy and wow/flutter measurements from the standard belt . Whilst I am not bothered about rpm app in absolute terms, I am bothered in relative terms since it is the improvement that has surprised me.

Anyway - the listening will be the key so will report back later.

 

[ddk]

Okay just built my first prototype. I have measured it too using the rpm app on iPhone. I have improved both the speed accuracy and wow/flutter measurements from the standard belt . Whilst I am not bothered about rpm app in absolute terms, I am bothered in relative terms since it is the improvement that has surprised me.

Anyway - the listening will be the key so will report back later.

Your challenge is getting the tension right, it shouldn't be too tight.

david

 

[Audiophile Bill]

Your challenge is getting the tension right, it shouldn't be too tight.

david

Hi David,

Well I owe you a pint or three. Done around 1.5 hrs straight listening and I am getting a really nice improvement in the sound. The following are the areas that I have seen a really decent uplift:

>> Leading edge transient speed increased
>> Improved decay
>> Added micro-resolution
>> More texture in lower register