Studer 169 EQ in API 500 format

[KMB-AUDIO]

I'm going to start building my pair soon, but I'm having a real hard time finding the rev log 100k dual.  Anybody got any leads? ?

 

[kante1603]

I'm going to start building my pair soon, but I'm having a real hard time finding the rev log 100k dual.  Anybody got any leads? ?

Normally Colin at AML has them,but they are "temporarily out of stock".
Maybe you can ask him when and if they will be available again,his member name here is "slenderchap".
Would be nice if you can share your results here.


Good luck,


Udo.

 

[KMB-AUDIO]

I sent an email. I'll post here when I hear back.

I did find a local company that will make them for .72 each - but you need to order 1000 pieces!

 

[KMB-AUDIO]

Just received an email from Colin stating that they are back in stock!

 

[iprovlek]

You have stereo 100k REV Log on Musikding!

 

[kante1603]

Just received an email from Colin stating that they are back in stock!

Thanks for sharing!

 

[dissonantdissident]

Just finished up my build.  I went with the transformer option, and I used Whistle Rock BLU-18s for the DOAs and Phillips 5534s for the IC opamps.  I didn't go with switchable frequencies, or anything super fancy.  It's gonna be great on my master bus.  The EQ seems nice and subtle, and the transformers seem to be taking off some of the digital edge, from my ITB mixes.

Now I've just gotta get this GSSL up and running, right !

glenn

 

[2Low]

Two EQs finished
Easy to build, great sound, bang for the buck .. thanks Audiox !

 

[dissonantdissident]

Can anybody point me towards some knobs that fit the AML pots?  I've been ordering knobs and haven't found gotten it right, so I figured I'd ask if someone has an ebay link, or something. 

Alternately, does anybody in the USA have eight fitting aluminum knobs that they'd trade for eight clear pointer CAPI knobs:

http://classicapi.com/catalog/product_info.php?cPath=23_39&products_id=310

I've got 4 yellow and 4 amber inserts, for them.

 

[kante1603]

Two EQs finished
Easy to build, great sound, bang for the buck .. thanks Audiox !

How do you call them,Supernovae maybe? 8)
Well done,


Udo.

 

[2Low]

DISCO `74 

[/quote]
How do you call them,Supernovae maybe? 8)
Well done,


Udo.
[/quote]

 

[2Low]

i´ve used :  Sifam /  4mm


https://de.rs-online.com/web/p/potenziometer-knopfe/1258430/?searchTerm=S151+004B&relevancy-data=636F3D3126696E3D4931384E4272616E644D504E266C753D6465266D6D3D6D61746368616C6C26706D3D5E5B5C707B4C7D5C707B4E647D5C707B5A737D2D2C2F255C2E5D2B2426706F3D3526736E3D592673743D4B4559574F52445F4D554C54495F414C5048415F4E554D455249432677633D4E4F4E45267573743D53313531203030344226

Can anybody point me towards some knobs that fit the AML pots? 

 

[dissonantdissident]

Hey folks,

After I messed up and ordered the wrong knobs, I couldn't get the money for the SIFAM ones.  I did find these super cheap knobs on ebay that work:

http://www.ebay.com/itm/10-Pcs-4mm-Shaft-Insert-Dia-Brass-Tone-Core-Potentiometer-Control-Knobs-/321124814808?pt=LH_DefaultDomain_0&hash=item4ac487cfd8

They take a while to ship to USA and the paint job(for the markers) is horrible.  That being said, you can scrape off the excess paint with an exacto knife and you've got knobs that work, fit, and don't look terrible.  They tighten like the collet knobs, but they have a screw that you tighten(phillips or flat head) , instead of the funky little fitting that the collet knobs use.

Just figured that I'd pass it along, for folks trying to save $$$.

 

[bruce0]

Those do look like nice cheap collet knobs.  I believe all the collet knobs have screws except the ones designed to (optionally) be the bottom of a concentric knob stack, which need the ring screw because the concentric shaft comes through the middle.  Pretty much all the 4mm knobs  have screws I think.

 

[dissonantdissident]

Fair enough.  The only other Collet knobs I've worked with were on old dbx stuff, and they didn't have a slot for a screw driver.  Instead, they have a fitting that you have to grip via slots located on either side of the shaft, which comes up the middle(more akin to a nut than a screw).  At least that's how I remember them.

 

[assrael]

I plan to build this unit with stepped controls.
Can anybody share the calculation for the resistors of MID FREQ in reference to the frequencies?

 

[avieira]

I'm planning out a mastering version of this EQ with stepped Grayhill switches. I had a friend get very precise with some calipers and use the curve from the data sheet of the original RLog pot to approximate the resistances. Hope this helps!

 

[assrael]

Thanks! That’s the workaround which I have planned to do if I can’t get the calculation.
I will also use Greyhill rotarys for the frequencies and most probably Elmas for the gain.

 

[Trench Recordings]

Just wondering if you could easily put the transformer on a toggle  switch ?

 

[assrael]

It’s possible, but it’s not an easy modification. You have to cut traces, add new ones…
Compare the layout values of the trafo layout and the standard layout to figure out what to do.