sontec 1 RU build thread

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Just make sure before by mail that they have it in stock, because if not then lead time could be terrible, happened to me once dealing with Banzai, they have great stuff, but no way of seeing stock status.
Just for info, Digikey has free shipping for orders over 65 euros, and tax will be payable when fedex send you the invoice of it.
 
Hi,

I'm just building one of these, using the pots supplied as a kit, and the exposed leg has snapped off one of my gain pots (50k centre tap centre detent).  Does anyone know where I might be able to get a replacement pot from?

Thanks very much for any help,

Josh
 
any chance of ordering the alphastat pots in the us? I need a supplier for...

10 - 50k CTPOT
2207 RD1601-20F4-30R
ALPHASTAT 63250-01610/B50K 50K LIN CENTERTAPCENTERDETENT

10 - 100K RLOG DUAL_ALPHA_2
4196 RD1602-20B4-30R
ALPHASTAT 63256-02600/C100K 100K REV-LOG

Anyone?  i will order outside us if i have to.

thanks
 
any chance of ordering the alphastat pots in the us?

I don't think so, that's why the feeler Yosh made and i took care of, the PITA with Alphastat is their Shipping charges, they make some crazy amount for shipping to US directly, but maybe i can help you out, just PM me, don't have to give away, but i'll be doing one order from them, for an idea of the prices, check the feeler, of course a set of Sontec will cost my friend that's for sure....
 
:-\
thats what ive suspected...

its a mistake in the BOM:

3 5K LIN POTSW
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=CT2204-ND

1 5K LIN POT
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=CT2226-ND

im wondering noone has observed.

can i place the swich pots instead of normal pots too?
 
thats what ive suspected...

its a mistake in the BOM:

3 5K LIN POTSW
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=CT2204-ND

1 5K LIN POT
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=CT2226-ND

im wondering noone has observed.

can i place the swich pots instead of normal pots too?

Yes a Typo mistake i know and saw that, but the link clearly sends you to the right one so....., and the picture gives proof to what's needed, so i think nobody bothered saying, hey typo there, i tought about you buying wrong ones when asking question, but this is electronics, better check twice before everything, got caught in your situation too for different things, i don't think you can stick the SW ones in the linear places ??? But maybe actually, the pads seems to fit also, anyway if not, then think about it this way you'll have spares for other Sontecs....
 
hm i dont even understand why the Q of the LO-F is switchable in this design.
so i cant decide if its sensible to make other Qs switchable too.

the mounting is not a problem. the pots fit everywhere...

perhaps can igor give an advice?
 
Hello,
Front.jpg


Built by Mark Watson... m.a.watson at hotmail.co.uk

Slutty info:

- It has EQ in and out switches on each band
- It's stereo, but fixed in linked mode
- It has a 6 or 12 dB switch, so that's 6dB at 0.5 steps or 12 at 1dB steps
- All other controls are switched for maximum recall.
- It looks the same as my compressor, aka like a tank!

Some basic operating info:

Individual bypass switches:

Up
+/-11dB gain in 1dB steps (bands 1 to 4)
+/-5.5dB in 0.5dB steps (band 5 - hi-shelf)

Middle
Off

Down
+/-5.5dB gain in 0.5dB steps (bands 1 to 4)
+/-2.75dB in 0.25dB steps (band 5 - hi-shelf)

So band 5 has half the gain range of bands 1 to 4 just because I could think of no earthly reason why anyone would need a +/-12dB shelf in a mastering eq.

IN switch (top right)
Bypasses all channels for quick A/B testing.

Low Shelf
On the original, this only worked when the Q knob was turned all the way to the left and the pot switch was engaged. In your model, it can be used at any Q value giving some more sound shaping options (which may or may not be desirable, worth playing around with it).

Hi Shelf Slope Switch
Switches between 12dB/octave & 6dB/octave slope. This is a subtle change but still useful.

Q switches
Continuous rotary switches so you can go from Q=1 to Q=12 in 1 step.
I used 12 steps in the end as 24 would have been total overkill. 6 steps would have been more than adequate looking back.
 
Nice panel. What's inside?

For all guys here who want this EQ steped.
I hate the idea with cutting my logo on PCB with dremel tool :)
To be more accurate and let you all have nicer stepped EQ's
without cutting the PCB's with dremel.

I almost finished mastering version of PCB set which will be offered soon.

Here is what I did about 5 years ago:

http://www.bardostudios.co.il/studios/mastering
(check the animated picture, and re-load site to play it again).
 
:)
I have about 200 of audio projects.

About 40 were finished.

8 of them were done many times by other people,
like 33609, TG, (ops :), 2254C, Sontec, etc.
This is my fun to receive a message kinda "Igor, built your 2254C about a year ago,
working with it daily, today it sounded cool on drums and just writing this to let you know".

About 30-40 are drawn in my PC and were breadboarded (I never simulate).
About 100 projects are in my had.
Anyway, I hope new mastering version of Sontec PCB's will be right in!

edit: sorry, i am not good in mathematics :)
 
@Matthew, we figured this out, or this wasn't you?
I completely lost in mails and forum names!
@Mark: thanx! Have a fun with your Sontec!

Some other projects will come soon......hopefully :)
 
hi igor i finished my sontec yesterday - it works nearly from first powerup. just still waiting for "one" poor cap thats missin. i hope supplier hurries up...

but i have to say that its an exiting unit that sounds great. not a colorful EQ like my old british EQs from 80s soundcraft desk... it sounds clean but not harsh. im very interested in a mastering version then i use my normal sontec in the bus. thank you for the project  :D
 
Back
Top