JAY X

Summing mixer Finished!
« on: August 12, 2016, 12:05:57 PM »
Hi All!

After many years asking and learning, this is the result :  a 32+2 input channels, 2+2 out, summing mixer. With balanced inputs and outputs. Switchable selectable output, line driver/trafo, and balanced insert send/return with blend insert control in the output master section.

Jay X
« Last Edit: August 12, 2016, 03:29:39 PM by JAY X »


JAY X

Re: Summing mixer Finished!
« Reply #1 on: August 12, 2016, 12:07:10 PM »
Rear panel connectors:

JAY X

Re: Summing mixer Finished!
« Reply #2 on: August 12, 2016, 03:26:28 PM »
inside view:

Rocinante

Re: Summing mixer Finished!
« Reply #3 on: August 12, 2016, 03:33:02 PM »
Awesome!  That's super professional looking.  Looks seemless. The frontpanel is great too.  Have you gotten a chance to use it?
If there's a harder way to do this, I haven't found it yet.

john12ax7

Re: Summing mixer Finished!
« Reply #4 on: August 12, 2016, 07:06:37 PM »
I agree, it looks great. How does it sound?

JAY X

Re: Summing mixer Finished!
« Reply #5 on: August 13, 2016, 10:44:13 AM »
Hi!

Thank you for your comments! :)

I still have to perform studio tests in a professional studio. During the construction i tested the mixer with stereo tracks, and there is a difference between the line driver and transformer output. The trafo has a bit more low end... In general, the sound is clear, open...

Now i'm looking for a new soundcard/interface, because the one i have is very old.. its inputs have level problems and has only unbalanced outputs. Then i will test the summing inputs... and i will upload some tracks...

Jay x




JAY X

Re: Summing mixer Finished!
« Reply #6 on: October 07, 2016, 07:30:47 AM »
Hi All!

Here are two tracks to show the transformer and line driver output in action!. ¡Feel the mojo!

MIKROSUM TRANSFORMER OUTPUT

https://soundcloud.com/azel909/mikrosum-32-transformer-output-azel909-el-mar

MIKROSUM LINE DRIVER OUTPUT

https://soundcloud.com/azel909/mikrosum-32-line-driver-output-azel909-el-mar


Expect to hear more tracks to test the blend circuit and more. Moreover, i'm finishing the user manuals, both in spanish and english. 8)

JAY X/ MIKROSUM

http://www.mikrosum.webnode.es
« Last Edit: March 20, 2017, 11:55:23 AM by JAY X »

12afael

Re: Summing mixer Finished!
« Reply #7 on: October 07, 2016, 08:50:23 AM »
spanish! ;)
heavy metal is the law!!!

JAY X

Re: Summing mixer Finished!
« Reply #8 on: December 01, 2016, 12:48:56 PM »
Hi All!

A long time since my last post...

Finally yesterday i could test the MIKROSUM summing mixer in a professional studio: Estudis Ground  Residential Recording Studio at Cornellà del Terri, a little town nearby Girona. http://www.estudisground.com
The control room features an ARK console installed by malcom toft...a great range of compressors: DBx, distressors, and 500 series preamps, eq's.. and of course Protools and SSL MADI converters.

So i run over there, installed the MIKROSUM, and run 24 channels of a protools session already recorded. The track was kind of reggae, pop... and as the summing inputs work at unity gain, all what was needed is to set the output level of the summing mixer, to get a good signal level at the stereo inputs of the converters. No need to change any level of the session tracks. Just different bus output to get into the suming inputs.

The sound of the Mikrosum was great and we could compare the Line driver/Trafo output, and both gave interesting tones results.

I really felt alleviated!! because of all the time invested in developing this audio project, months of worries are all gone!!. Now it becomes more clear i'm in the right track!!

Expect further infos about price (895 euros) and availability and more audio tests!!

http://www.mikrosum.webnode.es

Thanks a lot!!
Jay x
« Last Edit: March 20, 2017, 02:28:49 PM by JAY X »

JAY X

Re: Summing mixer Finished!
« Reply #9 on: December 02, 2016, 06:06:13 AM »
MIKROSUM STUDIO VIEW



boji

Re: Summing mixer Finished!
« Reply #10 on: January 03, 2017, 11:26:37 AM »
Very nice work! That's so very professional looking!  What's driving your makeup gain?

JAY X

Re: Summing mixer Finished!
« Reply #11 on: January 16, 2017, 06:23:35 AM »
Hi Boji!

For the summing i use inverting summing amplifiers at unity gain. And at the output stage, a fader amplifier with 10db gain, followed by a TI DRV134 line driver or a Lundahl LL2811 transformer. Both selectable with a switch.

Jay X.

JAY X

Re: Summing mixer Finished!
« Reply #12 on: March 22, 2017, 06:20:39 AM »
¡Hi!

new website: http://www.mikrosum.webnode.es

Feel free to contact thru the email or online form!! and also download the broshure and user manual!!.

¡More info comming soon! :)