Re: Creating of 2254 style compressor {CREATED}
« Reply #60 on: October 27, 2016, 08:03:01 AM »
Hello friends!

Batch of pcbs for DB54 is coming. BA cards already purchased, but looks like I've got a small delay with unite pcbs ???

I've created google drive folder where I will accumulate all information for building DB54.
http://bit.ly/2dLli43

Now it contain partlist, bom, mouser cart link, transformer list, front panel holes dimensions.  I will update it as possible.
« Last Edit: October 27, 2016, 08:09:45 AM by dirty1_1garry »


Matt55

Re: Creating of 2254 style compressor {CREATED}
« Reply #61 on: October 28, 2016, 08:27:32 AM »
Hello Igor,

I can't seem to get the Mouser cart working? I put the access ID in the project searcher box but nothing comes up?

Thanks, Matt

Re: Creating of 2254 style compressor {CREATED}
« Reply #62 on: October 28, 2016, 08:44:31 AM »
Hello Igor,

I can't seem to get the Mouser cart working? I put the access ID in the project searcher box but nothing comes up?

Thanks, Matt

Let me check. Yeah, my bug. Fixed.
Access ID: 33b8ed2434

For those guys who had a little Mouser experience:
Go to http://ru.mouser.com/Tools/Tools.aspx
and insert Acess ID in specific field. Voila!
« Last Edit: October 28, 2016, 08:47:44 AM by dirty1_1garry »

SIXTYNINER

Re: Creating of 2254 style compressor {CREATED}
« Reply #63 on: October 28, 2016, 07:17:28 PM »
for bc184, bc214, and other no longer available parts ,
have you done some test with the replacement parts as for 1073 , 1084 clones ?
cheers
>>" 1 Picture say what billions words cannot "<< - >>"SMD Kill the DIY STAR"<<
Why in the  forum  if no share

Rocinante

Re: Creating of 2254 style compressor {CREATED}
« Reply #64 on: October 29, 2016, 02:56:46 AM »
for bc184, bc214, and other no longer available parts ,
have you done some test with the replacement parts as for 1073 , 1084 clones ?
cheers
I believe the replacements are bc550 (or mpsa18) and bc560 and from what ive read the are perfectly suitable.   I seem to recall Dan Kennedy saying its what he used in the mp-2nv.
« Last Edit: October 31, 2016, 10:34:33 PM by Rocinante »
If there's a harder way to do this, I haven't found it yet.

kosi

Re: Creating of 2254 style compressor {CREATED}
« Reply #65 on: October 29, 2016, 07:34:49 AM »
here's alot of info
http://groupdiy.com/index.php?topic=51340.0

BC184C
As replacement I bought MPSA18 from ebay member hfo_poland , which have hery good hfe values, I also bought some from a shop in Italy, which had pretty low values. Tested with a cheap chinese transistor tester.
Remember to turn the MPSA around.
In my NV73 I have used BC549 and 547

BC441/2N1711 - 1
2N1711 are everywhere on ebay

BC214KC
a lot of people reported, that they used BC214C versions without problems. Keep attention, that the L version has a different leg orientation, you can try to bend them, but's really a pita...

I guess, there are many other possibilities



« Last Edit: October 29, 2016, 10:28:19 AM by kosi »

iprovlek

Re: Creating of 2254 style compressor {CREATED}
« Reply #66 on: October 30, 2016, 05:57:07 AM »
BC109C,BC550C!!!

Re: Creating of 2254 style compressor {CREATED}
« Reply #67 on: October 31, 2016, 04:59:24 AM »
Yeah, can confirm that BC550 works perfect at BC184 place.

Re: Creating of 2254 style compressor {CREATED}
« Reply #68 on: October 31, 2016, 03:28:10 PM »
First proto of enclosure for DB54.

Re: Creating of 2254 style compressor {CREATED}
« Reply #69 on: November 08, 2016, 04:43:59 PM »
Got a call from pcb fabric. Mother boards a ready! So on this week I will start to send DB54 kits to happy owners)


TwentyTrees

Re: Creating of 2254 style compressor {CREATED}
« Reply #70 on: November 10, 2016, 03:15:57 AM »
Woohoo! Really looking forward to this one. Thanks for keeping us updated.  ;D

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #71 on: November 10, 2016, 09:27:13 AM »
Just add samples into DB54 build folder. Check it here:
http://bit.ly/2dLli43
File name - DB54 sound test1 .zip
It contain ProTools10 session 48kHz 24bit.
If you use other daw, search audio files folder.
I made samples of drum kit (for stereo sound I precess left and right channel consecutive), electric bass and acoustic guitar with different settings.
« Last Edit: November 10, 2016, 01:30:40 PM by dirty1_1garry »

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #72 on: November 11, 2016, 04:14:30 AM »
I forgot to add into previous post that I used standard attack setting - fixed exact like in original 2254.  Different attack settings will be tested in next test)

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #73 on: November 11, 2016, 06:42:17 AM »

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #74 on: November 11, 2016, 02:56:20 PM »
Here is how two uniting boards looks like.
But... at this moment they all sold. All kits that was made are sold  :P
Will order second batch of boards!)
« Last Edit: November 11, 2016, 03:34:35 PM by dirty1_1garry »

kosi

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #75 on: November 11, 2016, 06:22:44 PM »
Congratulations !
You seem to be astonished about your success  ;D
And could you post a pic, where we can see the inner goods of your 2254 ?


Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #76 on: November 13, 2016, 01:23:59 PM »
And could you post a pic, where we can see the inner goods of your 2254 ?

Here is an image.
I forgot to mention that for I've sued carnhill transformers as input and interstage and EA 1166 as output.
As I've got a first serial batch of DB54 boards I will assemble it and show much in details.

Murdock

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #77 on: November 13, 2016, 04:16:05 PM »
Wow, looks great! Will definatelly buy a stereo set next month!
Couple of questions:
-How hard would it be, to incorporate a high-pass filter?
-Is there a simple way to link two of your 2254's together?
-Where did you get the EA1166? Hairball seems to only have the smaller 500 versions...
 

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #78 on: November 14, 2016, 10:37:12 AM »
-How hard would it be, to incorporate a high-pass filter?

Hmmm, I think that it's not so hard, more then that adding sidechain hpf is in my list for experiments. And in one moment I will add it, but may be in next revision.

-Is there a simple way to link two of your 2254's together?
yes, I already made link switch in mono unit and it present same way of linking as original 2254.  Check first post for face panel example.

-Where did you get the EA1166? Hairball seems to only have the smaller 500 versions...
 
Aaah)) I got it about 3 years ago, as I heard EA don't produce them more. It sound a little bit sweeter then carnhill for my opinion with a small bump in low end.

Murdock

Re: Creating of 2254 style compressor {CREATED} samples added!
« Reply #79 on: November 14, 2016, 04:12:20 PM »
Thanks alot for the infos!
I know, its probably way to early, but do you have any kind of ETA for the HPF?


 

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