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Old 11th August 2006, 03:37 PM   #11
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by Zero One

I should say though that my system is very high res .....
Hi,

must have an Akai turntable of a quality I'ver never seen ......

/sreten.
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Old 11th August 2006, 04:38 PM   #12
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Hey!
Maybe a nAKAImichi dragon, or a nice micro-sAKAI ??
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Old 11th August 2006, 09:14 PM   #13
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I was not referring to the turntable but the other parts of the system, you will see I am actually building a new TT to match the system. But before I do that I want to make sure I can get a sound quality that I am actually happy with from a cart and pre amp combo. BTW I have already made a few experiement with the TT desigm and as far as that goes it will I feel be very successful, but no the akai is not great but it is better than the others I have which includes a higher end Dual model (too much rumble for my liking).

The rest of the system is very very revealing and all DIY.
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Old 12th August 2006, 10:25 AM   #14
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Sorry - just couldn't resist.



Actually, the Japanese DD turntables can sound rather good, although they tend to be let down by the arms (not talking L-70D or TT1000 here!). They definitely don't resolve like the better modern ones, but they certainly don't distort when properly set up. You get a performance that might leave stuff out, but which doesn't grate like many a CD player.

Just set up a Sansui/1012gx for a friend, total outlay <100 pounds, and the result was "yeah, could definitely live with this" and he really likes it. Wasn't dumb enough to let him hear my Teres/Music Maker rig on the same day, though.

regards, jeff
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Old 13th August 2006, 01:51 AM   #15
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Thanks Jeff, no worries, I agree entirely about the arms, they are mostly rubbish, certainly the one on the Akai is. It is strange though, the drive is very stable and quiet but the arm is just sloppy mainly in the vertical bearing, I have looked at this but there is no satisfactory method of adjustment, just poor design really.

On the other hand I have an old belt drive Pioneer PL514X which has a very solid arm and overall the TT is very well engineered....but it transmits motor noise which lets the whole plot down (pretty big motor too). I have used this for digital transfers and when a filter is applied in processing to remove the LF noise the results are very nice.

Similar situation with the Dual, it seems to have great potential, the attack on transients is great etc and the machine is built like a tank, but Oh the rumble! Just can't live with it, but once again with LF filtering for transfers it might be good.

It did occur to me that combining an jap DD platter unit and a modern arm in a new plinth could be a viable option for DIY however I worry about future repairs as I had another DD unit that packed it in but couldn't be fixed due to no spares been available.
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Old 14th August 2006, 04:29 PM   #16
tubenut is offline tubenut  South Africa
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I think the A&R Cambridge and Garrott Bros cartridges are the same, there is even similarity in numbers......
This could perhaps be a source for a decent stylus, always quite liked my C77 and E77.... They are not cheap though...

Goldring is a good deal also.

Sumiko Pearl and Black Pearl also work well in modest arms, again styli are interchangeable.
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Old 22nd August 2006, 05:57 PM   #17
tubee is offline tubee  Netherlands
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I modded a Akai DD with my own made cardanic arm. Sounds rather good, but did this 18 years ago and have some other idea's about it now. When i have time will start to rebuild it again. The DD is not exact synchronous rotating to my ears, will glue a lead ring in platter, replace arm tube with a carbon one, and marble arm base will be exchanged with a wooden part under the arm. Marble resonates in mid sound region, not the best material to build a DD and arm on. But its beautiful.

The distorsion comes from the cart imo, when i replaced the Ortofon OM10 to an Benz Gold (thanks Pjotr!) experienced less distorsion. But the phono stage is important too, with the right impedance matchings. I have to change the phono stage too in time.
[img=http://img109.imageshack.us/img109/6489/armoq2.th.jpg]
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Old 23rd August 2006, 08:27 AM   #18
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hi, beautiful arm do you have a description?

"Marble resonates in mid sound region, not the best material to build a DD and arm on" - have you tried Corian, an artificial marble that is bonded with resin. It's a very good substitue and already used by manufacturers like Nottingham analogue. It's expensive, but every time a kitchen/bathroom fitter installs a sink there's a nice turntable-sized offcut fom the hole.

regards, Jeff
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Old 23rd August 2006, 06:14 PM   #19
tubee is offline tubee  Netherlands
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Default arm & Corian

Hi Jeff.

Good idea this Corian. Will ask a kitchen builder for a peace. And when i can get only a small peace of black Corian to put under arm it would be enough too i think.

The arm have i made as final task to get graduated from technical education as fine-mechanic engineer. Its from aluminium, anodised myself, bearings supplied by RMB precision bearings (swiss?) at that time. They run on hard steel & polished angled tips made from clock parts. They can be aligned to minimal (no) play. It has a combinatin of spring and counterweight for balancing, adjusting apropriate weight is by turning the spiral spring, very simple and easy method. But the counterweight will be replaced by one which as an excentric hole, for lower mass placement. The Benz is very smooth through the groove, much better than the anxious fiddly bouncing OM.

But the alu arm tube resonates sound direct into the marble and back. Thats why i want to refit it with carbon tube. Have now a rubber isolation ring mounted between arm base and marble, this helped a little allready: better mids.
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Old 23rd August 2006, 07:09 PM   #20
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Nothing beats a dual channel scope and a test LP with glide tones and stepped tone bursts for checking your settup.

VTA, balance, peak tracking etc can all be verified at a glance.
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