Coralstone Diamond on Koetsu arm

Mike Lavigne

Member Sponsor & WBF Founding Member
Apr 25, 2010
7,086
16
38
#82
very, very, nice, Christian. congrats.
 

ddk

Industry Expert
May 19, 2013
3,447
6
38
Utah
#84
This just showed up on my doorstep from Japan. Coralstone Diamond !!!
When I first looked into the box I thought the cantilever was broken. The crystal clear Diamond cantilever is hard to see even with readers...lol.
Cool, and just in time, looks like we're good for end of Nov to beginning of December delivery!

david
 

Tango

VIP/Donor
Mar 12, 2017
1,854
45
48
Bangkok
#86
That is exciting indeed. All the pieces are falling into place...
I may need to explore SPU’s for the 3012R...mono and stereo..;)
Dear Christian,

I only saw pictures of the AS2000 with David's older hammered finish. What kind of finish will you be having? Any latest picture?

Sorry for a wrong thread.

Kind regards,
Tang
 

ddk

Industry Expert
May 19, 2013
3,447
6
38
Utah
#88
Still waiting on the finishing samples but all the metal work for the first two units are nearly done and as expected 30 years later it looks better and the tolerances are even tighter. What's taking time is finding someone who can do a similar tool finish like the original or better, we should know the options in November and I'll update everyone as soon as I get them.

You can have any cartridge on the SME 3012-R, SPU is just the basic. I've never heard a diamond Koetsu very curious how it will sound.

david
 

Tango

VIP/Donor
Mar 12, 2017
1,854
45
48
Bangkok
#89
Thanks Mike. I'm a bit intimidated to mount it let alone clean it. Are they brittle, can they handle the sweep of a stylus brush ? I suppose so. I need to build up the courage to mount it.
I am afraid I am too clumpsy for this beautiful transparent canti.

Tang
 
Mar 27, 2016
112
1
18
Canada
#90
This just showed up on my doorstep from Japan. Coralstone Diamond !!!
When I first looked into the box I thought the cantilever was broken. The crystal clear Diamond cantilever is hard to see even with readers...lol.
Glad you got looked after. Enjoy.
 
Jun 5, 2010
826
0
16
#91
Congratulations rockitman on your new Koetsu coralstone! You got a very nice piece of fossil there. Just looking at the picture, I sense a three dimensional look into the body of the cartridge.

I have a Koetsu tiger eye with diamond cantilever. I had no problems with brushing it. My cantilever broke off while playing an lp. I don't know why, it just happened. In my experience, when newly mounted, the singers' voices sounded 20 years younger and "angelic". I remember telling people the singers did not sound like themselves but they seem to sound like what I imagined they would sound like when they became angels. Take your time to break it in. You're in for a real treat even during break in period. For me, the diamond cantilevered Koetsu is the most mesmerizing Koetsu.
 

Ron Resnick

Co-Owner, Administrator
Jan 25, 2015
5,051
29
48
Beverly Hills, CA
#92
Congratulations on the cartridge, Christian!

Are you going to be able at some point to give us a sense of the difference in sound between the Coralstone with boron cantilever and the Coralstone with diamond cantilever?
 

rockitman

Member Sponsor
Sep 20, 2011
6,871
1
38
Northern NY
#93
Congratulations on the cartridge, Christian!

Are you going to be able at some point to give us a sense of the difference in sound between the Coralstone with boron cantilever and the Coralstone with diamond cantilever?
Thank you Ron. I feel like a cart hoarder....two unplayed coralstones sitting on the bench. I currently have a Tiger Eye in play boron. I will see if I am interested in torturing myself going back and fourth. The differences should be pretty apparent....I suspect the diamond will be on the AS, boron AF1.
 

rockitman

Member Sponsor
Sep 20, 2011
6,871
1
38
Northern NY
#94
Congratulations rockitman on your new Koetsu coralstone! You got a very nice piece of fossil there. Just looking at the picture, I sense a three dimensional look into the body of the cartridge.

I have a Koetsu tiger eye with diamond cantilever. I had no problems with brushing it. My cantilever broke off while playing an lp. I don't know why, it just happened. In my experience, when newly mounted, the singers' voices sounded 20 years younger and "angelic". I remember telling people the singers did not sound like themselves but they seem to sound like what I imagined they would sound like when they became angels. Take your time to break it in. You're in for a real treat even during break in period. For me, the diamond cantilevered Koetsu is the most mesmerizing Koetsu.
Thanks for sharing your diamond experience. When my Tiger Eye grows tired, off to Japan for a diamond rebuild.

Is the recommended tracking weight range between boron and diamond any different ?
 
Jun 5, 2010
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#95
Tracking weight is the same. If I remember correctly, Koetsu recommends 1.8 to 2.0 grams. In my own system, I preferred 2.2 grams. I can't remember the reason I preferred going over the recommended tracking weight anymore. It's been 5 or 6 years ago when I dabbled in analogue. I'm all digital today; but my analogue gears are still around, I'm just feeling lazy the last 3 years.
 
May 9, 2015
268
2
18
Cologne, Germany
#96
currently flipping between 5 different Koetsu (black gold line, Rosewood signature, Blue Sky , Vermillion, Onyx Platinum) , all with the recommendation of 1,8 to 2g.
My experience is, every individual Koetsu of my collection likes a different tracking force, for whatever reason, it goes from 1,85 to 2,2 g, depending on the cart.
I do not know, if this is general with Koetsu or depending on the different manufacturing years or more the age of the Koetsu.
Comparing to my different colibris, they start new with 1,48g, after 300h they mostly like to be driven more close to 1,4g preferred tracking force.

juergen
 

Audiocrack

Active Member
Aug 10, 2012
1,902
0
36
#97
Somehow I cannot find them anymore. Can somebody help me with the specs of the Coralstone platinum diamond cartridge?
 
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rockitman

Member Sponsor
Sep 20, 2011
6,871
1
38
Northern NY
#98
currently flipping between 5 different Koetsu (black gold line, Rosewood signature, Blue Sky , Vermillion, Onyx Platinum) , all with the recommendation of 1,8 to 2g.
My experience is, every individual Koetsu of my collection likes a different tracking force, for whatever reason, it goes from 1,85 to 2,2 g, depending on the cart.
I do not know, if this is general with Koetsu or depending on the different manufacturing years or more the age of the Koetsu.
Comparing to my different colibris, they start new with 1,48g, after 300h they mostly like to be driven more close to 1,4g preferred tracking force.

juergen
Perhaps the different age of Koetsu carts is to explain ? ie: the optimal tracking weight may change over time for a given cart as the suspension ages and starts to drop. Just a logical guess on my part.
 

BruceD

VIP/Donor
Dec 13, 2013
897
0
16
#99
Perhaps the different age of Koetsu carts is to explain ? ie: the optimal tracking weight may change over time for a given cart as the suspension ages and starts to drop. Just a logical guess on my part.
Indeed and not forgetting Humidity/extreme temperature changes /etc.

BruceD
 

Tango

VIP/Donor
Mar 12, 2017
1,854
45
48
Bangkok
Bonzo sold me this Coralstone. Not pretty like Gian’s. But sounding very good. Grandest soundstage of all carts I have. Want him to regret he sold :p.

It is on Axiom. A bit warmer than Opus1 and MSL Platinum on SAT.


Tang