Mission 774 on a Logic DM 101...advise, possible improvements for the arm ?

[torstoi]

Thank you both.

I have just managed to test-fit the Zyx and found typically 2 kinds of cart screws, of which 1 type fits and one does not.
The kind that does not fit often came supplied with Japanese carts, is shiny and has a very fine screwdriver slot in the top.
The same kind of thread is also to be found in inbus kind of screws, and optically in fact there are hard to tell apart.
The thread itself in those looks less steep and a tad finer than metric...very carefully attempting to get those in after like not even a milimeter, the arm gave a clear: NO.

The one that fit spot on are what I believe to be M2,5 so far.
Those went in exactly by 3mm each side, and the inside of my arm (in the threads) looks the same spotless black coat like outside,
so it seems there has not been fooled around with wrong norms in there, yet...that's great.

No guarantee, yet, but I think it's M2,5. (I found 2 screws fitting perfectly, but will have to order a few M2,5 screws still different lengths now to confirm it's them.)

So, in the arm 3mm thread length, the Zyx mounting length was exactly 5mm.
So you come out at a total of 8mm, add some small soft cart screw nylon washers & you should be spot on there.

https://online-schrauben.de/shop/Sch...isches-Gewinde

That's a link to a German online shop, the DIN appears to be DIN 912, but as said, I have yet to confirm those are really the ones I used.

As it turns out, I had 2 perfect black ones soming with the loose screw bypack package, I did not know what they were for, with the Logic DM101.
Lost one of them, probably eaten by my vac cleaner meanwhile,,,tuns out the second one was spot on what I'd need for the Zyx...8mm length,,,damn.

The screws will have to be black I think,,,the kind of lightly washed out black of the originals would be awesome..

So far for now,,,cheers..

[Bigman80]

Once you get the right fixings, damping and setup you will be rewarded with great sound.

Pictures !!!! We need pics !!!!

Lol

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[torstoi]

1) A total with it's upcoming rival lurking in the background...you'll notice the total thickness of the Logic's platter in comparison to the LP12's.
The potential of speed continuity from mass on the outter areal of the platter is on the Logic's side I'd say...if the electronics allow it,,,that is..

http://prntscr.com/e8y4m8

2) A total from above reveals the massive alloy subchassis, 18mm thick, so nearly 2cm,
my whole deck appears to be coated with somthing similar to a car stone-hit protection, doesn't look very elegant but from damping alone is not even silly perhaps.
The tiny arrow shows how I had to hang the outter ta cable over the chair to have the suspension happy, having it hang free killed any vertical movement and thus the suspension absolutely.
The LP12 HAS to have at least one leg in the pic, or my house is gonna burn..

http://prntscr.com/e8y73b

3) Zyx Yatra on Mission 774 with a loose arrangement of cable salad..or so a gourmet temple would put this..
...and yes...as my cut of the pic illustrates,,I know it's not...

http://prntscr.com/e8yafd

4) Armbase...detail:

http://prntscr.com/e8ycor

5) Armdetail base from right side...suspension fine & level with most mass of the outter cable held by a chair:

http://prntscr.com/e8yduc

6) Detail Commando Central of the Logic Enterprise...a really bewildering crowd of knobs..

http://prntscr.com/e8yexk

7) Detail right suspension setting,,yes I'll have sunk screws in the final version..

http://prntscr.com/e8ygpe

8) ...same as 7) only I took the outter TA cable from the chair and let it hand down freely,,,effect, subchassis goes to the ground, suspension effectively dead.
This is the most sensible suspension I have come across as yet...swings forever once touched when in balance.
Doesn't mean it doesn't work, noor it has to sound bad,,,we'll see..

http://prntscr.com/e8yhpg

9) same situation, view from below. Spectaculary free hanging TA outter cable. Not a good idea on this deck..

http://prntscr.com/e8yj43

That's it for now,, nowhere near cosmetic condition or presentation status quo as your really outstandingly beautiful Toshiba's,
but gives quite a realistic impression of the Logic's kind of massive physical presence, particularly in contrast to the smaller appearance with a light tendency of appearing a bit lost
at first view.
Longer handling and watching it kind or re-calibrates this impression of being lost, esp. bc the handling of the Mission has a very physical presence and self-confidence that cannot be caugth in a picture.
The better optical balance overall remains with the Toshibas, though.
In case of the Logic and Mission, nearly nothing is normal, conventional or even tries to impress with an impression of balance,
so seen this way, my combination somehow goes within the scheme in total..

Thx for watching, if you like more perspectives or closeups I left out,,or just wanna express that is by far the ugliest deck you have seen in your life ever,,
just let me know..

P.S.: A view of the hanging TA cable will perhaps, despite the cable is not blue, for some in the know have recognise the hand writing of J7 of Audio Origami
from the charismatic attachment of the earth lead by heatshrink.
And that's correct, the seller had the deck inspected and repaired by J7 before sending it to me.
It didn't work properly and J7 repaired the electronics by changing capacitors and obviously also cared for the worn centre bearing by putting in a new precise insert (bush?)
As I don't know the state before, I just wanna say a big thanks for this & it's nice knowing it has been cared for properly by an expert, so no unpleasant surprises are to expect from these spots
any soon. Big thx to Alex and J7 for this !
...and to Jez, without whom recommending the Logic to me, it would never even have appeared on my radar.
3 very good pointouts up to now, if the Logic turns out a winner, it looks I owe you another pint, mate..

[Bigman80]

1) A total with it's upcoming rival lurking in the background...you'll notice the total thickness of the Logic's platter in comparison to the LP12's.
The potential of speed continuity from mass on the outter areal of the platter is on the Logic's side I'd say...if the electronics allow it,,,that is..

http://prntscr.com/e8y4m8

2) A total from above reveals the massive alloy subchassis, 18mm thick, so nearly 2cm,
my whole deck appears to be coated with somthing similar to a car stone-hit protection, doesn't look very elegant but from damping alone is not even silly perhaps.
The tiny arrow shows how I had to hang the outter ta cable over the chair to have the suspension happy, having it hang free killed any vertical movement and thus the suspension absolutely.
The LP12 HAS to have at least one leg in the pic, or my house is gonna burn..

http://prntscr.com/e8y73b

3) Zyx Yatra on Mission 774 with a loose arrangement of cable salad..or so a gourmet temple would put this..
...and yes...as my cut of the pic illustrates,,I know it's not...

http://prntscr.com/e8yafd

4) Armbase...detail:

http://prntscr.com/e8ycor

5) Armdetail base from right side...suspension fine & level with most mass of the outter cable held by a chair:

http://prntscr.com/e8yduc

6) Detail Commando Central of the Logic Enterprise...a really bewildering crowd of knobs..

http://prntscr.com/e8yexk

That looks lovely !

You mentioned your orange writing had faded, well it hasn't. There were two versions of wand. From what I have been able to find out on the net and my own personal tonearm is that one (orange writing) is entirely metal in construction including headshell. The other (gold writing) is a couple of mm longer and has a graphite/carbon headshell. Not sure which.

The orange one came with the tonearm but the gold one was sold separately.

I haven't been able to find anything else out about it. I was thinking of trying to contact John Bicht if he's still around and get as much detail as possible.

I'm sure the LP12 will be gathering dust for a while now you have this.

Try the Mission with a Toshiba SR370 if one ever comes up for sale. It's remarkable.

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[torstoi]

That looks lovely !

You mentioned your orange writing had faded, well it hasn't. There were two versions of wand. From what I have been able to find out on the net and my own personal tonearm is that one (orange writing) is entirely metal in construction including headshell. The other (gold writing) is a couple of mm longer and has a graphite/carbon headshell. Not sure which.

The orange one came with the tonearm but the gold one was sold separately.

I haven't been able to find anything else out about it. I was thinking of trying to contact John Bicht if he's still around and get as much detail as possible.

I'm sure the LP12 will be gathering dust for a while now you have this.

Try the Mission with a Toshiba SR370 if one ever comes up for sale. It's remarkable.

Thanks for the nice comment and info Oliver..

It could be I did more of a lucky shot than I supposed to, even ? ...whow,,,that'll be amazing..
Graphite / carbon,,sounds pretty much Formula 1 already.

For now I'm pretty happy anyway,,and yes, from the massiveness of the plinth and maybe the density of the material used, there could be similarities with the Logic and the Toshiba
that go down with the Mission very well.
I do not doubt this is good and am sure from the drive aspect alone, the stability of the Toshiba will be hard to match.

We'll see....in the long perspective I am lurking after a competent direct too,
but for the moment I'm quite happy and have a bit of task in front of me, still.

The LP12 will always be sitting next and act as a competition. It has a few features that quite puts it apart from the classic standard 'fruit box',
but...from some specific features I saw on the Logic and Mission too, alike an unholy sound of distant thunder I sense it's well possible
it could be wise to keep some handkerchiefs handy for the LP12 when the contest begins...who knows,,,we'll see..

[Bigman80]

Thanks for the nice comment and info Oliver..

It could be I did more of a lucky shot than I supposed to, even ? ...whow,,,that'll be amazing..
Graphite / carbon,,sounds pretty much Formula 1 already.

For now I'm pretty happy anyway,,and yes, from the massiveness of the plinth and maybe the density of the material used, there could be similarities with the Logic and the Toshiba
that go down with the Mission very well.
I do not doubt this is good and am sure from the drive aspect alone, the stability of the Toshiba will be hard to match.

We'll see....in the long perspective I am lurking after a competent direct too,
but for the moment I'm quite happy and have a bit of task in front of me, still.

The LP12 will always be sitting next and act as a competition. It has a few features that quite puts it apart from the classic standard 'fruit box',
but...from some specific features I saw on the Logic and Mission too, alike an unholy sound of distant thunder I sense it's well possible
it cold be wise to keep some handkerchiefs handy for the LP12 when the contest begins...who knows,,,we'll see..

Haha, yes tissues for the LP12 could be needed.

I'm not sure whether the graphite/carbon was an upgrade or just an option but it does well on my TT so I'm happy.

There's nothing like the power of a good Direct Driver unit. Thunderous Bass is one of its many perks !!

The logic looks great and the Mission adds a "space age of the 80's" look. Very nice indeed.

Let us know how it sounds.

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[Patrick Dixon]

I'll take this opportunity just to add a couple of pics lol

Looking at your photo, I reckon you should check that that the anti-skating cord is correctly running on the two pulleys, as I'd expect the anti-skate weight to be more horizontal than you have it.

The cord should run around the horizontally pulley at the bottom of the arm base and around the vertical pulley on the arm with the weight(s), but it often seems to run out of the groove if you are not careful.

[Bigman80]

Looking at your photo, I reckon you should check that that the anti-skating cord is correctly running on the two pulleys, as I'd expect the anti-skate weight to be more horizontal than you have it.

The cord should run around the horizontally pulley at the bottom of the arm base and around the vertical pulley on the arm with the weight(s), but it often seems to run out of the groove if you are not careful.

Thanks for your observation but its bob on !! It does hang low though so I can see why you thought that.

I spent ages setting it all up to withing an inch of its life !!!!

I want one of those Dr Feikhart tools to see if there was any adjustments needed.

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[Patrick Dixon]

It's hard to see from that photo but are you sure it's in the grove of the horizontal pulley? You won't be able to set a Mission 774 up with a 'proper' tool because the geometry is all wrong. The headshell angle of 21.5 deg doesn't really work for anything shorter than a 10" arm.

[Bigman80]

100% sure. I am at work now or id take another better pic. I know they are a shit to set up right but i have no doubt mine is a close to "right" as i will ever get it.