Let's make a DIYAUDIO TT

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#381
peterr said:
speaking of prototypes, Is peted still here?
Click to expand...

Still here. Yes - sadly too busy - even to read this stuff. Thought I'd drop by just now and see what gives. By wierd co-incidence (fate?) there I am in the last post. One day I'll dig the thread out and do something more. By them you'll have ironed out the bugs.

Meantime still rolling out IT consultancy so I'll be able to afford the beast and get 'her indoors' off my back!

Good luck to all

Pete
 
#388
DIY AUDIO TT

Yes, I am making my DIY deck.Different to the ideas in this thread
though.I read through the thread,late,and got interested in the
idea of having a hydraulically supported platter.Made a new plinth
and used existing parts,with a platter 90 percent buoyant in oil.
Playing around with different oils I found that my motor would
run at right speed using air tool oil.
The sonics of this setup were terrible.There seemed do be a
lot of low frequency noise in there.Terrible bass but HF o.k.
Someone had mentioned in the thread (fdegrove maybe) that
the idea had been tried before and thrown out.I found out for
myself.
A lot of good stuff in this thread though,may be possible to DIY
a really good bearing.
 
#390
:wave: I have been working on my own TT for the past few months. I have been focusing on the tonearm though. It is a high precision take on the Poul Ladegaard design. I put every free minute into it. It looks very exotic. So far: triangulated Carbon fibre arm with hand carved, mahogany 'bits' (headshell, bearing(pin point) mounts, arm base...), Cardas Litz wire and cartridge clips, udjustable and repeatable VTA, azimuth and overhang. I will post pictures :film: when I complete it. I have very little time so my posts are few and far between, but I check the thread regularly.

D.T. Some may remember me stating I was to try molding a platter out of old records. My one word advice is: don't. It is much messier and difficult to do than I anticipated. I also realized that records are really 'pressed', that is to say molded under severe pressure. When heated the vinyl expanded to approximately four times it's thickness. Even under extreme heat, 250C, the vinyl would not become liquid and flowing but rather sticky and spongey. Gravity could not bring it to level . I was disappointed. It is much easier to melt and mold lead and add a layer of PVC or acrylic, then coat the lead with somethig to isolate it's poisonous nature from the invironment.

That is all for now, my wife is begging for attention.

Regards,

Bart.
 
#391
Illusus said:
:wave: I have been working on my own TT for the past few months. I have been focusing on the tonearm though. It is a high precision take on the Poul Ladegaard design.
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Sounds very interesting. Can't wait to see pics.

prairie wasteland, canada covers a pretty big area (you might be able to stuff Europe into it). Where exactly? I grew up in Stettler, AB another spot on that wasteland.

dave
 
#393
Supermodel
got interested in the idea of having a hydraulically supported platter.Made a new plinth
and used existing parts,with a platter 90 percent buoyant in oil.
Playing around with different oils I found that my motor would
run at right speed using air tool oil.
The sonics of this setup were terrible.There seemed do be a
lot of low frequency noise in there.Terrible bass but HF o.k.
Someone had mentioned in the thread (fdegrove maybe) that
the idea had been tried before and thrown out.I found out for
myself.
Click to expand...

I am very interested in your experiences. Do you have some pictures maybe?

Did you try the setup without fluid and if so did that sound any better?

What was your platter made from?

Which direction are you heading now?
 
#395
Peter,

I suspect that your turntable has little in common with the Supermodel model. Yours is more fluid damped than floating, and that platter is massive!!

It is waaaaay to early to say whether the concept as you have evolved it is good or bad.

Now if yours sounds like crap too, (I think it won't) then we have two data points!!

Illusus,

You brave battle with the vinyl isn't surprising in retrospect.
sounds like awful stuff. At least you weren't burned!!
Another experiment done!
 
#396
DIY AUDIO TT

Peterr

My only pic. shows the core part of the platter.It is acrylic sheet,
drilled,which then has fibreglass/epoxy sheets bonded each side.
This construction sounds better than solid plate(IMO).
I used it on my suspension deck ,it was quite good.

In the oil bath the sonics were terrible,so I did not spend
any more time on it.
Now I am working on an airspring suspension,less than 1Hz.
 

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#397
planet10,

I grew up in Tarnow, Poland, then immigrated to Vienna, Austria then Capua, Italy and finally, at the age of eleven, North Battleford, Sk. I lived in NB for five years before moving to Saskatoon where I have been living for ten years.
(Culture x shock)^n

Bernhard,

I have visited your site. Your arm design is outstanding. I will love to see it realized. If I had the funds, I would sponsor it in a heartbeat. The links on your site were very helpfull as is all your input on this and the Assylum forums.

Variac,

Thanks for the praise and concern. I did burn myself, when I wanted to test the texture, I had a glob of vinyl stick to my finger . I didn't expect it to be so sticky!!! I had no choice but to let it cool on my finger.

...And to all,

Thanks for the interest. Pics will come when the arm starts playing music, I have been taking some pictures of the construction process and will post the important ones in a chronological order.


Regards,

Bart.
 
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