GroupDIY

Project Specific Discussions => Dynamic Processors => Topic started by: diystudiotoys on November 06, 2015, 04:44:51 PM

Title: CA VG1 - VCA compressor
Post by: diystudiotoys on November 06, 2015, 04:44:51 PM
Hello fellows!
I want to introduce my new project to you - my version
of VCA based compressor in VPR500 form factor.

Short description:
That1246 as input buffer
2520 + 2503 transformer as output.
THAT2181 as VCA and detector

                                                                                                                              Controls:

(http://groupdiy.com/gallery/0/58173-060516100837.tiff)

                                                                                                              THRESHOLD sweepeble
                                                                                                              RATIO stepped
                                                                                                              ATTACK(POT)
                                                                                                              RELEASE(POT)
                                                                                                             MAKE UP(POT)
                                                                                                              WET/DRY(POT)
                                                                                                             HPF SIDECHAIN(BUTTON) with two selectable frequencies
                                                                                                             BYPASS(BUTTON) HARD BYPASS
                                                                                                             KNEE(BUTTON) SOFT, TIGHT

Kit include:

- all pcb boards
- front panel
- L bracket
- Screws, PCB stands

Order here  http://bit.ly/2gplK85 or here [email protected]

Build Manual

http://bit.ly/1WcHm6G


Mouser Cart

http://bit.ly/1Nt2a1a

BOM

http://bit.ly/1NiURLR

SAMPLES

https://soundcloud.com/diystudiotoys/sets

VIDEO

https://www.youtube.com/channel/UCTvu2FNyXfff9zqsw9BJRHg

FACEBOOK

http://facebook.com/diystudiotoys/





VG1 with Elma knobs
(http://groupdiy.com/gallery/0/58173-131215070530-3382239.jpeg)
VG1 with SIFAM knobs
(http://groupdiy.com/gallery/0/58173-131215070530-347378.jpeg)
Title: Re: CA VG1 - VCA compressor in VPR500 format
Post by: diystudiotoys on November 06, 2015, 04:46:29 PM
Preorder list

Upacesky              2  paid    shipped
 avdo                        2   paid   shipped
 djfatum                 2   paid   shipped
dirty1_1garry     1  paid    shipped
Title: Re: CA VG1 - VCA compressor in VPR500 format
Post by: diystudiotoys on November 06, 2015, 04:49:58 PM
control board
Title: Re: CA VG1 - VCA compressor in VPR500 format
Post by: diystudiotoys on November 06, 2015, 04:53:48 PM
front panel
Title: Re: CA VG1 - VCA compressor in VPR500 format
Post by: dirty1_1garry on November 06, 2015, 05:25:30 PM
Man, it looks awesome! Looking forward! :P
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: Upacesky on November 07, 2015, 03:02:39 PM
Really really awesome work.
Do you plan on releasing anything?
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: vittoles on November 07, 2015, 05:17:01 PM
hi,
how much for that?
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: weiss on November 07, 2015, 06:29:57 PM
Wow, great device! :)
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: iprovlek on November 08, 2015, 12:32:53 PM
 8)

Looks great
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: iprovlek on November 08, 2015, 04:02:09 PM
Price?
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: diystudiotoys on November 08, 2015, 04:20:18 PM
Thank you for your inquiry! :)  The work has been almost finished, we’re waiting on the delivery of the proto PCB from the factory after which we’re doing the final testing, photos and sound samples. Then we’ll be ready to start selling the kits.  :D
As soon as we have the news we’ll post it here. Stay tuned!  ;)
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: iprovlek on November 08, 2015, 04:23:26 PM
Hardly wait
 :P
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: diystudiotoys on November 10, 2015, 01:28:59 PM
Hello guys!
Today I've got a proto board  :)
Tomorrow i will start assembling  8)


Checkout an image below
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: diystudiotoys on November 10, 2015, 01:32:00 PM
TOP SIDE
Title: Re: CA VG1 - VCA compressor in API 500 format
Post by: diystudiotoys on November 10, 2015, 01:32:27 PM
BOTTOM SIDE
Title: Re: CA VG1 - VCA compressor in API 500 format, Pictures added
Post by: G-Sun on November 10, 2015, 02:08:17 PM
I'm very interested.
vca? rms or more peak-style?
Any specific inspirations and design-goals?
For tasks/instruments?
Title: Re: CA VG1 - VCA compressor in API 500 format, Pictures added
Post by: diystudiotoys on November 18, 2015, 02:00:54 PM
Hello everyone!
Having some great news, the first prototype was born and fully working. The PCB has been checked for mistakes, all pots and knobs are working correctly, and sounding great :-)
Samples coming soon!
Title: Re: CA VG1 - VCA compressor in API 500 format, Pictures added
Post by: diystudiotoys on November 18, 2015, 02:05:28 PM
I'm very interested.
vca? rms or more peak-style?
Any specific inspirations and design-goals?
For tasks/instruments?

Hi G-sun,
This compressor are more peak style, it was a inspiration from SSL 4000 bus compressor.
I guess it would be useful for tracking on vox and instruments
Title: Re: CA VG1 - VCA compressor in API 500 format, Pictures added
Post by: diystudiotoys on November 18, 2015, 02:13:19 PM
Proto
Title: Re: CA VG1 - VCA compressor in API 500 format, Pictures added
Post by: diystudiotoys on November 18, 2015, 02:15:42 PM
VG1 +2520  :)
Title: Re: CA VG1 - VCA compressor in API 500 format, Pictures added
Post by: G-Sun on November 18, 2015, 03:11:49 PM

Hi G-sun,
This compressor are more peak style, it was a inspiration from SSL 4000 bus compressor.
I guess it would be useful for tracking on vox and instruments
Thanks for telling me!
I built a gssl and found no use for it in my setup..
Title: Re: CA VG1 - VCA compressor in API 500 format, Samples added
Post by: diystudiotoys on December 06, 2015, 08:55:02 AM
Hello  :)
We got proto panels and made few pictures with different knobs
also upload samples to soundcloud for easy listening

link to our soundcloud with samples(drums samples added  :D )

https://soundcloud.com/diystudiotoys/sets
Title: Re: CA VG1 - VCA compressor in API 500 format, Samples added
Post by: diystudiotoys on December 06, 2015, 08:56:08 AM
VG1 with SIFAM knobs
Title: Re: CA VG1 - VCA compressor in API 500 format, Samples added
Post by: diystudiotoys on December 06, 2015, 08:56:45 AM
VG1 with ELMA knobs
Title: Re: CA VG1 - VCA compressor in 500 format, Drums samples added, Panel pictures added
Post by: Upacesky on December 08, 2015, 05:19:42 AM
Hey, great news!!!
I prefer the sifam knobs by the way.

How does the link work? Is it "just" summing both channels? Or can we control both sides with one ßet óf knobs ?
What's your plan to sell them? As full kits? Pcb and metalwórk?
Title: Re: CA VG1 - VCA compressor in 500 format, Drums samples added, Panel pictures added
Post by: diystudiotoys on December 12, 2015, 09:08:17 AM
Hey, great news!!!
I prefer the sifam knobs by the way.

How does the link work? Is it "just" summing both channels? Or can we control both sides with one ßet óf knobs ?
What's your plan to sell them? As full kits? Pcb and metalwórk?

Hello Upacesky!
When link button is tunrned on such parameters as: attack release, threshold and makeup are controlled by master unit.
Function of master compressor should be Turned on on pcb board with proper jumper.
Such parameters as ratio and blend stay independent on each compressors, no mater are they linked or not
Toworrow we will post some more info about prepayment for purchasing the kit
Title: Re: CA VG1 - VCA compressor in 500 format, Drums samples added, Panel pictures added
Post by: diystudiotoys on December 13, 2015, 07:30:46 AM
Hello folks!
We've glad to announce a great news:
We are open preorder!

We will open our sales with Kit that will include:

- all pcb boards
- front panel
- L bracket
- IDC connectors
- Ribbon cable
- Screws, PCB stands

Regular price
One kit - 150€
Two kit - 280€

Preorder price
Regular price
One kit - 140€
Two kit - 260€
+2520 PCB
+Free Worldwide shipping tracking

Pre order will be from 13 Dec till 23 Dec.
 25 Dec we will start to ship a packages.



There will be available mouser basket for all parts that necessary to build compressor

Thanks for attention. If you have a questions, feel free to ask

(http://groupdiy.com/gallery/0/58173-131215072943.jpeg)


Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: avdo on December 14, 2015, 05:17:34 AM
Hello man!
Good news!
How I can to buy this? Want to 2ps.
And can you help me with some spare parts?
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: djfatum on December 14, 2015, 05:37:14 AM
WoW

two sets for me, please  8)
amazing project  ;D
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: Upacesky on December 14, 2015, 08:28:52 AM
Also 2  sets for me
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: diystudiotoys on December 14, 2015, 12:37:15 PM
Hello man!
Good news!
How I can to buy this? Want to 2ps.
And can you help me with some spare parts?

Hello Avdo
I will add you to pre order list on first page.
You can buy parts from mouser.com(we made mouser cart with VG1 parts) or banzaimusic.com( good price)
also need buy output transformer from capi-gear.com
all this info in BOM)
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: avdo on December 14, 2015, 03:36:55 PM
Thanks!
Send me all information when it will be ready!
How many days you need for made this?
I want to know how I can send money to you? Where I can find this inform?
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: diystudiotoys on December 14, 2015, 04:01:37 PM
Thanks!
Send me all information when it will be ready!
How many days you need for made this?
I want to know how I can send money to you? Where I can find this inform?

We will ready for ship next few days
I will sent PM about payment
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: avdo on December 14, 2015, 04:08:32 PM
Great!
Want to ask about price per full kit, willl you sale full kit? Wich price will be?
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: diystudiotoys on December 14, 2015, 04:12:14 PM
Great!
Want to ask about price per full kit, willl you sale full kit? Wich price will be?

We want sell Full kits(include transformer) later
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: avdo on December 14, 2015, 04:14:19 PM
See you!
Can you tell me what total build cost?
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: diystudiotoys on December 14, 2015, 04:18:00 PM
See you!
Can you tell me what total build cost?

Total cost
VG1 kit                              140
Mouser cart                   150
Output transformer  40

Total     about                330-350$
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: avdo on December 14, 2015, 04:20:49 PM
Good!
I thought  it will be expensive)))
Thanks! I'm happy!
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: avdo on December 15, 2015, 04:56:40 AM
Sent payment!
Please, check you account!
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: diystudiotoys on December 15, 2015, 10:52:25 AM
Sent payment!
Please, check you account!

Got your payment
thank you
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: avdo on December 15, 2015, 03:06:36 PM
  :) LIKE!!!
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: dirty1_1garry on December 16, 2015, 09:42:00 AM
Great stuff!
One kit for me please! :)
Title: Re: CA VG1 - VCA compressor, Preorder info and prices added
Post by: diystudiotoys on December 18, 2015, 10:44:39 AM
Hello!
we have 4 more kits
next batch after 5th January
Title: Re: CA VG1 - VCA compressor, we have 4 more kits, next batch after 5th January
Post by: diystudiotoys on December 23, 2015, 12:05:00 PM
Hello!
Shipped first orders today)
Title: Re: CA VG1 - VCA compressor, we have 4 more kits, next batch after 5th January
Post by: diystudiotoys on December 30, 2015, 03:07:32 AM
shipped all kits)
Title: Re: CA VG1 - VCA compressor, we have 4 more kits, next batch after 5th January
Post by: avdo on January 02, 2016, 06:43:00 PM
Hello!
I received today two kit of CA VG1!!!
(http://groupdiy.com/gallery/0/thumb_57038-020116183643.jpeg) (http://groupdiy.com/gallery/0/57038-020116183643.jpeg)
It looks realy GREATE!
Thanks a lot to diystudiotoys!!!
Hope I will collect it soon and will compress my tracks!  ;D

Thanks!!!
Title: Re: CA VG1 - VCA compressor, we have 4 more kits, next batch after 5th January
Post by: djfatum on January 05, 2016, 02:07:41 PM
I got today
my order
all great packed
Great job

(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/10639566_723321047798808_8973418954156577310_n.jpg?oh=2e80b51fcee43d8f3fea32d856fed3fd&oe=56FE43B2)
Title: Re: CA VG1 - VCA compressor,all kits sold, next batch after 10th January
Post by: diystudiotoys on January 06, 2016, 12:40:56 PM
Thank you!
Good pictures  ;D
Title: Re: CA VG1 - VCA compressor,all kits sold, next batch after 10th January
Post by: djfatum on January 14, 2016, 12:14:19 PM
Work progress  8) 8) 8)

(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/12573011_726822294115350_4405932378522574498_n.jpg?oh=de5fd798933d709a0831ae9e61ebd070&oe=5739ABE0)

(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12417668_726822327448680_6781187113435516368_n.jpg?oh=4fa8710022d98fa398545786891417f4&oe=570311F8)

(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12509397_726822314115348_4601173993852861962_n.jpg?oh=4501397ebc738a47f265c9fc2cb58051&oe=57461458)

(http://)
Title: Re: CA VG1 - VCA compressor,all kits sold, next batch after 10th January
Post by: avdo on January 16, 2016, 05:50:41 PM
...And my job!!!
(http://groupdiy.com/gallery/0/57038-160116174736.jpeg)
(http://groupdiy.com/gallery/0/57038-160116174806.jpeg)
Title: Re: CA VG1 - VCA compressor,all kits sold, next batch after 10th January
Post by: avdo on January 16, 2016, 05:54:54 PM
Want to ask diystudiotoys!
Can you tell me which knobs  I can put on, may be links to shop this.

Thanks!
Title: Re: CA VG1 - VCA compressor,all kits sold, next batch after 10th January
Post by: diystudiotoys on January 19, 2016, 03:18:04 PM
Hello
First video with VG1 here http://facebook.com/diystudiotoys/
video with stereo link mode  ;D
Title: Re: CA VG1 - VCA compressor,all kits sold, next batch after 10th January
Post by: diystudiotoys on January 19, 2016, 05:15:44 PM
Hello
First video with VG1 here http://facebook.com/diystudiotoys/
video with stereo link mode  ;D

Hello avdo!
Thank you for your pictures.
Use this store for Elma switches
https://sites.google.com/site/diypartsstore/catalog/catalog-page-2
Sifam knobs
http://www.canford.co.uk/SIFAM-KNOBS
Title: Re: CA VG1 - VCA compressor,First video added, kits back in stock
Post by: diystudiotoys on January 19, 2016, 05:22:58 PM
Youtube https://www.youtube.com/watch?v=WR4droIqG1s&feature=youtu.be
Title: Re: CA VG1 - VCA compressor,First video added, kits back in stock
Post by: Upacesky on January 21, 2016, 05:30:03 AM
Got my parcel today! Thanks a lot!
Title: Re: CA VG1 - VCA compressor,First video added, kits back in stock
Post by: diystudiotoys on January 29, 2016, 05:32:30 AM
Hello
Glad to hear it  :)


Got my parcel today! Thanks a lot!
Title: Re: CA VG1 - VCA compressor,First video added, kits back in stock
Post by: Upacesky on January 31, 2016, 09:11:30 AM
Hi,
do you have a BOm or even better Mouser Cart for your own 2520 opamp?
Thanks a lot
Title: Re: CA VG1 - VCA compressor,First video added, kits back in stock
Post by: diystudiotoys on January 31, 2016, 04:13:34 PM
Hi,
do you have a BOm or even better Mouser Cart for your own 2520 opamp?
Thanks a lot

Hello!
Yes, we have
http://bit.ly/23C9thL
Title: Re: CA VG1 - VCA compressor,First video added, kits back in stock
Post by: djfatum on February 12, 2016, 07:48:18 AM
Very cool knobs Mentor
is only to drill a hole of 3 mm to 3.2 mm
They are very cheap
cost about 1.2 Euro

http://www.tme.eu/en/details/g330.31/shaft-resistors-knobs/mentor/33031/ (http://www.tme.eu/en/details/g330.31/shaft-resistors-knobs/mentor/33031/)


(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12729010_738560732941506_6188386773366047588_n.jpg?oh=468e4436324345368df49b9506259237&oe=576095ED)

(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xfl1/v/l/t1.0-9/12742098_738560739608172_3659366516279684395_n.jpg?oh=35d29ef857818d39e5fdd9723e57f88a&oe=5760AF52)
Title: Re: CA VG1 - VCA compressor,First video added, kits back in stock
Post by: djfatum on February 15, 2016, 07:28:55 AM
Knob

(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xlf1/v/t1.0-0/s480x480/12743963_739701392827440_8031792160753224943_n.jpg?oh=68e10fdb2bacbf08d06d010eaa4aac6d&oe=5764DB10)

(https://scontent-fra3-1.xx.fbcdn.net/hphotos-xtl1/v/t1.0-0/s480x480/12729100_739701399494106_5447701773539484695_n.jpg?oh=62cde123e66c2367875a071ea23da6d6&oe=57313FC7)
Title: Re: CA VG1 - VCA compressor, NEW video added, kits back in stock
Post by: diystudiotoys on March 07, 2016, 12:10:11 PM
Hello!
New video with VG1
https://youtu.be/OKRj185sxvo
Title: Re: CA VG1 - VCA compressor, NEW video added
Post by: avdo on March 21, 2016, 04:04:44 PM
Hello to all!
Some days ago have tested CA VG1 in our studio!
Use it in channel separately, use it like mix bus compressor. Works best as in chanel, as in mix bus.
Think it is realy nice work!
PM sent to diystudiotoys!

(http://groupdiy.com/gallery/0/57038-210316160916.jpeg)

(http://groupdiy.com/gallery/0/57038-210316160936.jpeg)


Thanks!
Title: Re: CA VG1 - VCA compressor, NEW video added
Post by: diystudiotoys on March 23, 2016, 12:28:10 PM
Wow! Great pictures! Nice Lunchbox)
Thank you!

Hello to all!
Some days ago have tested CA VG1 in our studio!
Use it in channel separately, use it like mix bus compressor. Works best as in chanel, as in mix bus.
Think it is realy nice work!
PM sent to diystudiotoys!

(http://groupdiy.com/gallery/0/57038-210316160916.jpeg)

(http://groupdiy.com/gallery/0/57038-210316160936.jpeg)


Thanks!
Title: Re: CA VG1 - VCA compressor, NEW video added
Post by: fragletrollet on March 23, 2016, 04:59:40 PM
Would this somehow be compareable to Gyraf ssl + expat audio cavendish mod?
Title: Re: CA VG1 - VCA compressor, NEW video added
Post by: djfatum on April 01, 2016, 06:08:25 AM
https://www.facebook.com/WaveSolutionsDesign/videos/766192763511636/ (https://www.facebook.com/WaveSolutionsDesign/videos/766192763511636/)
Title: Re: CA VG1 - VCA compressor, NEW video added
Post by: diystudiotoys on April 05, 2016, 05:01:38 PM
Nice video! Thank you!
https://www.facebook.com/WaveSolutionsDesign/videos/766192763511636/ (https://www.facebook.com/WaveSolutionsDesign/videos/766192763511636/)
Title: Re: CA VG1 - VCA compressor, NEW video added
Post by: diystudiotoys on May 06, 2016, 10:20:35 AM
Build Manual Ready!
https://www.facebook.com/diystudiotoys/
Title: Re: CA VG1 - VCA compressor, Build Manual added
Post by: Colours Audio on July 24, 2016, 03:56:13 PM
Hello!  ;D
VG1 with 808 Kick and 808 Clap

https://youtu.be/sCHhvaqCSVw
Title: Re: CA VG1 - VCA compressor,Last Summer Days SALE
Post by: CiaoPatsy on September 16, 2016, 06:51:26 AM
Working on my kit now...really high quality stuff.

What values go in RZ and CZ?

Thanks!
Title: Re: CA VG1 - VCA compressor,Last Summer Days SALE
Post by: Jonkan on September 20, 2016, 05:32:54 AM
Any kits still available? Sounds really awesome in the videos!
/j
Title: Re: CA VG1 - VCA compressor,Last Summer Days SALE
Post by: diystudiotoys on September 20, 2016, 09:03:55 AM
Any kits still available? Sounds really awesome in the videos!
/j

Hello Jonkan!
Kits in stock!   :D
Title: Re: CA VG1 - VCA compressor,Last Summer Days SALE
Post by: diystudiotoys on September 20, 2016, 09:14:12 AM
Working on my kit now...really high quality stuff.

What values go in RZ and CZ?

Thanks!

Hello!
RZ and CZ just option for EA1166 mini transformer. CZ and RZ don't need with API2503
Title: Re: CA VG1 - VCA compressor
Post by: Jonkan on September 20, 2016, 09:23:43 AM
Cool! 👍 Pricing?
/j
Title: Re: CA VG1 - VCA compressor
Post by: diystudiotoys on September 20, 2016, 09:40:14 AM
Cool! 👍 Pricing?
/j

1 x Kit    130€
2 x Kits  250€
Title: Re: CA VG1 - VCA compressor
Post by: diystudiotoys on December 08, 2016, 03:21:53 PM
Order form added.
order here http://bit.ly/2gplK85
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 16, 2017, 07:31:42 AM
Can anyone tell me what JP2 does? I don't see it in the manual. Is it just a solder blob like on the AML kits by the output transformers?

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: diystudiotoys on November 16, 2017, 09:42:57 AM
JP2 change meter from single led to bar.
JP2 not short - meter in Single Led mode
JP2 short - meter in BAR mode


Can anyone tell me what JP2 does? I don't see it in the manual. Is it just a solder blob like on the AML kits by the output transformers?

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 16, 2017, 02:11:57 PM
Thanks for the info!

The last thing I am looking for is a BOM for the DOA PCBs that come with the kit. I should have the remainder of the parts showing up by Saturday and I can finish these guys up and move on to the next unfinished project!

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Upacesky on November 17, 2017, 06:57:38 AM
Hi,
I'm looking for one 250k log pot from CTS as in the bom. I ordered from mouser and they shipped the one that are extra long and with clearance problems.
I then ordered from banzai and got only one from the right kind. Now I can't find it anywhere  on the net, or just with 500pieces MOQ (no thanks). I couldn't find a replacement part with the same value and shaft diameter.
As I'm building a stereo pair I'd like to have the exact same pot for both build.

I'd be happy to hear about where you sourced yours, guys. And even happier if someone has a spare one for me.
Title: Re: CA VG1 - VCA compressor
Post by: diystudiotoys on November 19, 2017, 06:32:52 AM
CTS  250log  is rare right now but you can try 250k log with switch .
we want try 1m log as alternative for 250k log, It will  increase max attack time

250k  log  with switch from banzai  http://www.banzaimusic.com/CTS-270-SW-250k-LOG.html

1M log from banzai   http://www.banzaimusic.com/CTS-270-1M-LOG.html

1M log from mouser  https://www.mouser.com/ProductDetail/CTS-Electronic-Components/270X232A105B2A1/?qs=sGAEpiMZZMtC25l1F4XBU9ebFVlJKl0pM6Uoq6v9eyI%3d
 
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 21, 2017, 12:33:05 PM
Hello!

I've built mine up to the point where I have mounted transformers and I've come across some issues/discrepancies that might be of note.

First, the 470uF Audio Capacitor listed in the BOM is actually a Low ESR and is fairly tall, but I believe that it will be within the one slot space. The Mouser part number for the audio grade version is 647-UKT1H471MHD (if you want 105C instead of 85C). This probably won't make any audible difference either way, but one should be made aware if they are absolutely wanting a particular capacitor for C61.

Second, the 250k potentiometer on the BOM for the Attack control is physically deeper than the 10k pots. This causes an issue when mounting the boards to the faceplate as it overlaps with IC7, preventing it from being flush.

I also forgot to order the 1M pots and the correct 1uF caps with the 7.5mm lead spacing. I don't have enough of the 5mm ones for all four of the modules, so I might as well order the correct ones with the proper physical dimensions. I was hoping to have these up and running this week. Another box from Mouser just showed up so I guess I'll work on some other projects I have awaiting.

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 21, 2017, 12:34:05 PM
So close!
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 21, 2017, 12:46:37 PM
Update on the 250k pot. The the product number for the one on the BOM ends in B1, which is the version that includes a switch, which could be fun for a future mod/option, but it still won't fit in it's current placement. The one needed ends in A1 (like the other pots), but that version is non-stocked at Mouser and Digikey. It might be helpful to locate a suitable substitute that is readily available.

Thanks!

Paul

Edit: Arrow.com has them, but you have to sign up for a stupid account, which annoys me as that is guaranteed more unwanted crap in my inbox regardless of not subscribing to their news letters. Sigh...
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 22, 2017, 05:24:29 PM
I received the missing pots today, so I installed them and finished assembling the first one in hopes to calibrate it. I plugged it in and powered it on and in bypass it passed unity gain and top LED was lit. With it switched in it was still at unity but no make up gain control. The Mix control seemed to work as I saw the slight bump in signal that is common with most parallel blending circuits. I looked over the manual and noticed there was a fix for IC12 on V.1 boards, which I have. I installed the jumper and also made a solder bridge for JP2 as I wanted all the LEDs to light and not one at a time and powered it back up. Same thing except the bottom half of the LED array is constantly lit. I've double check solder joints and placement of components with no change. So I assembled another set of built boards and didn't bother installing LEDs. Now with the circuit IN there is no output signal. Assembled a third and same thing. I swapped ribbon cables and checked all the voltages in regards to ICs, DOAs, and relays. The one thing I did notice is that the V- for the 2181 chips is -2.8VDC and I don't know if this is correct. I am also using AD712 for the OPA2604 as the latter are never in stock at Mouser when I need them, and I've used the the AD712 a substitute before with great results.

I have a fourth set of boards built up but I haven't bothered as I'm sure I will get the same results. I feel a but defeated as I haven't had this much failure on a project in a very long time. I'm going to step away for a minute and come back to this later. If there was a schematic to follow along with that would be super helpful. One not working is conceivable but it hard for me to believe I made the same mistake three (possibly four) times when building these units. Are there any other corrections that need to be made for v.1 boards?

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 23, 2017, 03:04:49 PM
Once again, it is proven that no matter how many times you get a build right, you always have the opportunity to get one wrong...

I had placed 100R for 100k on the remote boards. All is compressing and everything. I do have an issue with the meter, but that again is probably something I did.

Stay tuned...
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on November 23, 2017, 09:37:09 PM
And finished! Kinda! I just need to find some sweet knobs. There's a fourth one, but I managed to break one of the pushbutton switches and I don't think I have a spare. But everything else calibrated exactly like the manual said except for one module, which I could only go as low as 0.002V for the CV calibration whereas the other two are at 0.000V, which probably just means I get a little overboard during the calibration process. I just wish I hadn't made such carless errors stuffing the boards that would cause me to spend the whole day troubleshooting to find the easiest to see and fix mistakes.

The one thing that is a little odd is the JP2 for the LED mode setting. When it is jumped, all the LED are on then turn off in succession when compression happens, like what you would see when using a noise gate. I was hoping it would be opposite of that like you would normally see for a GR meter, but that's just me being picky.

I haven't had a chance to actually listen to them yet. I'm trying to plow through a bunch of builds this weekend.

Thanks again for this great project! I can't wait to put them to use!

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: diystudiotoys on November 24, 2018, 05:36:40 AM
BLACK FRIDAY SALE!

VG1 kit for 99eu!!!

*The number of kits is limited.
Title: Re: CA VG1 - VCA compressor
Post by: Catrunes on February 17, 2019, 01:32:20 PM
to thoe who have built this, can you provide me with the standoff lengths needed for the daughter board and main pcb? thank you!

And finished! Kinda! I just need to find some sweet knobs. There's a fourth one, but I managed to break one of the pushbutton switches and I don't think I have a spare. But everything else calibrated exactly like the manual said except for one module, which I could only go as low as 0.002V for the CV calibration whereas the other two are at 0.000V, which probably just means I get a little overboard during the calibration process. I just wish I hadn't made such carless errors stuffing the boards that would cause me to spend the whole day troubleshooting to find the easiest to see and fix mistakes.

The one thing that is a little odd is the JP2 for the LED mode setting. When it is jumped, all the LED are on then turn off in succession when compression happens, like what you would see when using a noise gate. I was hoping it would be opposite of that like you would normally see for a GR meter, but that's just me being picky.

I haven't had a chance to actually listen to them yet. I'm trying to plow through a bunch of builds this weekend.

Thanks again for this great project! I can't wait to put them to use!

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on February 17, 2019, 08:14:19 PM
to thoe who have built this, can you provide me with the standoff lengths needed for the daughter board and main pcb? thank you!

Mine are 20mm.

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on February 19, 2019, 04:10:34 AM
For the linking, is there any way to utilize Pin 6 (Stereo Link) on the edge connector? This would make things a little easier to install a stereo pair in a rack that has a switch for the Pin 6 link. One could jumper from the link header to the edge connector unless there is something else going on in the link section that we don't know about. I'm just thinking there could be an easier way to go about this because I'm lazy.

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Catrunes on March 18, 2019, 08:03:33 PM
Anybody able to help out with how to set the grayhills for the ratio switch? Don't know where to put pins and how the shaft should be beforehand.
Thanks
Max
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on March 19, 2019, 01:27:38 AM
Anybody able to help out with how to set the grayhills for the ratio switch? Don't know where to put pins and how the shaft should be beforehand.
Thanks
Max

12 o'clock and 5 o'clock. Look at the front panel markings as a guide. Double check with switch to make sure you only have 6 total positions. CCW counts as one.

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: Catrunes on March 19, 2019, 06:53:51 PM
12 o'clock and 5 o'clock. Look at the front panel markings as a guide. Double check with switch to make sure you only have 6 total positions. CCW counts as one.



Thanks!

Paul

To clarify, if you're looking at the front of the unit upright as it would be installed, pins at 12 and 5? Thanks paul!
Max
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on March 20, 2019, 12:51:33 AM
To clarify, if you're looking at the front of the unit upright as it would be installed, pins at 12 and 5? Thanks paul!
Max

The relation is to the switch itself. The relation to the face plate is irrelevant  as you are going to put the knob on however it matches the markings. You can use any build guide that has a Grayhill switch as a guide on pin positions if you are unfamiliar with pin placement on these switches.

Thanks!

Paul
Title: Re: CA VG1 - VCA compressor
Post by: OneRoomStudios on July 06, 2019, 02:31:02 PM
I got mine built up, but I'm having a strange issue.

When I check for unity gain with the threshold set to +15, ratio at 2:1, and a -22dBFS signal, the output is about 4dB down. The meter confirms this, showing 3-4dB of gain reduction. If I lower the input signal to around -40dBFS, I can get the input and output to match and not show any gain reduction on the meter. It's almost as if the threshold is set far too low (even with the knob at +15). I get the same behavior when the ratio is set to 1.5:1, 2:1, and 4:1, but as soon as I switch to 6:1 or higher, everything seems to behave properly. I'm guessing I have a resistor out of place somewhere around the ratio switch?
Title: Re: CA VG1 - VCA compressor
Post by: Potato Cakes on July 06, 2019, 04:07:20 PM
If some of the ratios are working correctly then the resistors in that section are the first things I would check.

Thanks!

Paul