DIY Schroeder Tonearm???

[RogueAngel]

CLD? Yes. The tubes I'm using are thin walled. So, my thought is that with very thin layers of damping material ( approximately 0.002") between the aluminum and brass tube layers that rigidity will actually be increased since the tube will be acting as a much thicker walled tube. The brass and aluminum tubes have a wall thickness of 0.014". The aluminized ceramic tube is solid excpt for the borings. I chose the ceramic for it's very high strength to weight ratio.

I haven't decided yet on a damping material, so if any one has advice or good sources, I'd be grateful.

[RogueAngel]

Hi All,

I've completed my new Schroeder clone.

The latest uses stronger magnets, a brass and aluminum support structure, and a new brass/aluminum/ceramic arm.

The results are better low level information retrival and what I can only describe as bringing all the details back into an integrated whole.

I am very happy with this latest effort. I am recieving a Transfiguration Temper Supreme at the end of the week to replace the Sumiko LMX Premier I am using now. I'm hoping this will offer another dramatic increase in performance.

Here's some pic's:

http://www.htguide.com/bilder/images...II%20-%201.JPG

and another shot

Bobbi

[livemusic]

Hi Bobbi,
Well done, beautiful DIY project! One could see, the DIY'ers efforts could be well rewarded!
What kind of damping material between the arm layers you have choosen in the end?
Just one comment: your tonearm leads are arranged in such a way, the antiscating force is increasing towards record center. Actually, it should be done vice versa; Carlo Morsiani provide good reasons why in his site.
Regards and congrats!
Michael

[ktigerb]

Beautifulllll work Bobbi

I'm naturally with envy


regards
keith birss

[RogueAngel]

Thanks Michael and Keith ,

This was really a lot more work than my original, but I definitely feel the effort was worth it.

Michael, thanks for the reference to Morisani's efforts on adjusting anti-skating. Trying the wire running opposite to the present routing will be easy. I'll let you know if I can hear any difference.

The damping material I used is a spray damping material called Quiet Kote made by Cascade Audio Engineering. It was the only material I could find which would lend itself to filling the small annular space between the three co-axial arm rods. The arm was assembled with the damping still wet and allowed to cure in place. I'm sure there are probably better ways, but this seems to be working. Although I don't really have anything to compare it to.

Bobbi

[RogueAngel]

Hi All,

Well the Temper arrived on Thursday, and I am sooooo glad I built in a lot of capacity for VTA adjustment. I had to raise the rear of the arm about an inch just to keep the rear of the cartridge from hitting on a warped LP. I was fiddling with adjustments all day Friday and Saturday, but Sunday I finally got to sit down and really listen

The sound is better than I ever imagined it could be. Soundstage is 3 dimensional, bass is tighter and deeper than before and cymbals have taken on a very natural sound. But what is most amazing is the mid-range. The vocals from the Indigo girls are very distinct. Vocals on Guns-n-Roses live album are completely intelligble. And everything is natural and effortless. I am just in awe.

I picked up a lot of information on this thread, and it really helped.

Bobbi

[fdegrove]

Hi,

And everything is natural and effortless. I am just in awe.

Glad to here it, Bobbi.

You did a fine job, congratulations.

What cartridge, electronics are you using?

Cheers,

[RogueAngel]

fdegrove

What cartridge, electronics are you using?

The cartridge is the Transfiguration Temper Supreme, going through a Rotel phono pre-amp and Rotel receiver. My speakers are all DIY and can be seen here:

My system: (the pics do not show the new cartridge.)

You did a fine job, congratulations.

Bobbi

[fdegrove]

Hi,

going through a Rotel phono pre-amp and Rotel receiver.

Very good value for the bucks...

Hop over to the "Tubes" section of the forum and we'll wip up a pre and amp that matches the frontend in no time.

You'll be hearing what the frontend can really do....

Cheers,

[Jarno]

Hello all,

I know this thread is not very active anymore, but browsing through the messages I found the problem of drilling very brittle material (Neodynium). Most metals can be drilled quite easily using EDM, or, Electric Discharge Machining. Although the required tools are not something you conjure up in an afternoon, there quite a few workshops who can provide you with this service. It is quite a slow process (although there some specialized processes that can be quite fast), so the costs might be a bit prohibitive. Just my 0,02€

Greetings,

Jarno.