2. analog
  3. 150881-90127

Ceramic insulator cone under phono stage shocker!

I have used small ceramic insulator cones underneath my phono stage for quite some time.
Previous phono was a Gold note ph10 and it did not make ANY audible difference I could detect which way up the cones were so I had left them cone upwards.

When I changed my phono to a Manley Chinook I just left the cones same way.
This afternoon I decided to flip them over so cone down just to see.

I honestly could not and cannot believe the difference!
I may have lost a smidge of low bass but everywhere else is improved in spades.
Much more detail, resolution, air, imaging, dynamics.
Just completely shocking how much better a small change has made.

But I am perplexed why such a huge change on the Chinook where I noted nothing on the ph10?

Any theories here?
128x128uberwaltz
uberwaltz's avatar
uberwaltz OP
13,381 posts
 
Al
You could have something there.
I know one pair of Amperex tubes in it are well used to be polite......

Sounds like a project for tomorrow morning.
uberwaltz's avatar
uberwaltz OP
13,381 posts
 
Interesting.
No microphonics from either of the 4 tubes inside the Chinook that I could hear at all by performing Almargs suggested test, not even the slightest pop.

It just has to be the difference in the way the vibrations are borne away being much more noticeable through the tube phono.

Whatever it is a great cheap tweak! Lol.
slaw's avatar
slaw
20,411 posts
 
Maybe an additional benefit or way to explain what @almarg was pointing out is the latest orientation is a superior way to funnel vibrations out of the Manley.

Ever tried Herbies tube dampers?
geoffkait's avatar
geoffkait
23,365 posts
 
Cones act like mechanical diodes, so you always want the points down so the excess energy will exit the system. Points up actually allows more seismic energy to be transmitted to the component 🔝 and less excess energy in the component to escape.
lowrider57's avatar
lowrider57
5,393 posts
 
@slaw and @geoffkait , agree with the concept of draining vibration from the component to a neutral platform. I must thank @geoffkait for turning me on to DH ceramic cones. I'm using them underneath SS and tube components. The points are sitting on a maple plinth with Herbies underneath. 
The result is focus, dynamics, transparency. Cones pointed up do not provide these benefits.


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