Custom Arm Mounting Collar for Jelco SA-750 - essential for setting correct azimuth

[Sonority]

Hi Shuggie,
Your collar is the 'mutts nutts' so dont go messing with that!
The SS armboard has enough room to accept modification ''just'', but while it will be tight - it will look good and that it was designed that way
I'll post some pics when I've sorted mine.

[Ammonite Audio]

Thanks for your kind comments - the collar's increased overall diameter was one of those little design changes necessary to accommodate some really nice cap head bolts, which do look nice when the collar is fitted. The SS armboard is the only one that requires any modification before my collar will fit.

[nickbaba]

Arrived safe & sound - many thanks Hugo!

[Sonority]

Thanks for your kind comments - the collar's increased overall diameter was one of those little design changes necessary to accommodate some really nice cap head bolts, which do look nice when the collar is fitted. The SS armboard is the only one that requires any modification before my collar will fit.

As promised, some pics of the finished item, well, nearly finished
Please excuse the mobile telephone images - camera is at home.

First dismantled the Sound Supports armboards - they are two pieces held together with some nifty captive nuts and stainless socket round head screws.
The top part of the plate is where the hole needs to be enlarged. A 60mm 'FLAP Wheel' was called into service. Not particularly difficult, and reasonably easy to keep central, which IS important.







Made myself a jig to hold both the parts while I re-linnished them by hand with 800grit w&d paper. This is because I want a finer linnish than supplied and I'm also going to have them anodised black.





Put them back together, carefully put everything into place and there you have it - they do fit - albeit with less than .5mm to spare!



If Sound Supports would care to adjust the size of the mounting ring and move their three bolt holes out by 1 - 2mm then everything would be dandy. My guess is this would be easy to achieve as it "looks" to me like the items are made on a C/A turret punch, so just a few numbers need changing.

I'm happy with my results so far

As an 'aside' getting to the locking screw is still possible - just! you would not want the collar any lower or the top plate any thicker.

[Johan]

Sonority ,Thanks for showing us this ........... with pictures. maybe I do this too.

Gr. Johan

[OneyedK]

Hello Hugo,

Just finished reading 30 pages. And oh yeah, pm sent, I'd love to have one of those collars!

Thanks!

[Ammonite Audio]

All of the collars are now sold. I am having some more made in the New Year, though, so anyone interested should keep an eye on this thread for news.

[JohnM]

Damn always late to the party

Finally dipping my toes back into analogue waters with my SP-10 Mk.II & Jelco SA-750D, see this thread and... group buy is over. Hurrumph! Will keep my eyes peeled for the New Year group-buy - Those collars look 'da bizniss'

- John

[OneyedK]

Damn always late to the party

Same here... Will be the first to order when the new batch arrives!

[Mike_New]

Shuggie,
Got an em from one of my happy upgrade users in Cherry Blossom Land who wanted me to supply a Jelco collar. Not being a guy who wants to re-invent the wheel from someone already supplying an excellent product, I put him onto you. Hope you don't mind, from memory he lives in Tokyo.