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MS4 - A new stereo compressor kit, with www.compmusic.it

Official support for: sknote.it

Moderator: quintosardo

quintosardo
KVRAF
 
3412 posts since 15 Jul, 2004, from Italy

Postby quintosardo; Tue May 27, 2014 5:41 am MS4 - A new stereo compressor kit, with www.compmusic.it

This is a new DIY hardware project.
In collaboration with http://www.compmusic.it (italian magazine Computer Music Studio) we present a new DIY kit for a stereo compressor.

It is a PWM compressor, a quite rare kind of device, where the gain control device is based on Pulse Width Modulation, a technique which provided linearity, transparency and great control.

The kit is available in two versions:

- PCBs, components, controls, interfaces
- PCBs only

Official support is provided through this thread.

Get the kit here:

english page: http://www.sknote.it/MS4_en.htm

italian page: http://www.sknote.it/MS4.htm

:party:
Electronics and music: www.sknote.it
Recording in Italy: www.skstudio.it
MYLESGM
KVRer
 
1 post since 2 Dec, 2012

Postby MYLESGM; Sat Oct 11, 2014 11:56 pm Re: MS4 - A new stereo compressor kit, with www.compmusic.it

Hi, Where do I get further information on this project?
quintosardo
KVRAF
 
3412 posts since 15 Jul, 2004, from Italy

Postby quintosardo; Fri Nov 14, 2014 2:15 pm Re: MS4 - A new stereo compressor kit, with www.compmusic.it

Just ask!
Electronics and music: www.sknote.it
Recording in Italy: www.skstudio.it
elektrovolt
KVRer
 
2 posts since 17 Nov, 2014

Postby elektrovolt; Mon Nov 17, 2014 2:50 pm Re: MS4 - A new stereo compressor kit, with www.compmusic.it

this is a very interesting machine. are there any audio demos available?

those LOW and HIGH knobs, do they control filters in the sidechain?

is the 40:1 ratio necessary? I mean, there's 20:1 and inf:1 already.

on the left side it says:
A1: double
A2: double
A3: triple

What does that mean?

The Left/vol and Right/bal seem to have double functions, but I don't see any switch?
quintosardo
KVRAF
 
3412 posts since 15 Jul, 2004, from Italy

Postby quintosardo; Tue Nov 18, 2014 1:57 am Re: MS4 - A new stereo compressor kit, with www.compmusic.it

There's a first video, loading more detailed tests.

Low and High are boost/cut filters in the sidechain (both internal and external)

40:1 well, all steps are usefulm, also the compression curve is quite smooth so compression ratio is just a reference

A1, a2, a3 are "auto" release modes, with double or triple time constants. Useful on mixes, where the release changes depending on audio content.
Electronics and music: www.sknote.it
Recording in Italy: www.skstudio.it
quintosardo
KVRAF
 
3412 posts since 15 Jul, 2004, from Italy

Postby quintosardo; Sat Nov 22, 2014 4:28 am Re: MS4 - A new stereo compressor kit, with www.compmusic.it

A new video, using the compressor on the master buss :D

Improvising compression and testing various solutions...

http://youtu.be/m1BuzT6kA0w
Electronics and music: www.sknote.it
Recording in Italy: www.skstudio.it
lacandon
KVRist
 
438 posts since 31 Aug, 2012

Postby lacandon; Sat Nov 22, 2014 7:43 am Re: MS4 - A new stereo compressor kit, with www.compmusic.it

Cranesong Stc or Pye comp for bloody cheap only Quinto can do that magics price wise :-D!
quintosardo
KVRAF
 
3412 posts since 15 Jul, 2004, from Italy

Postby quintosardo; Sat Nov 22, 2014 3:58 pm Re: MS4 - A new stereo compressor kit, with www.compmusic.it

Another video. Compressing another song on the master buss.
Testing several combinations.

http://youtu.be/3-uVgz16Ul4
Electronics and music: www.sknote.it
Recording in Italy: www.skstudio.it
lacandon
KVRist
 
438 posts since 31 Aug, 2012

Postby lacandon; Sat Nov 22, 2014 4:48 pm Re: MS4 - A new stereo compressor kit, with www.compmusic.it

quintosardo wrote:Another video. Compressing another song on the master buss.
Testing several combinations.

http://youtu.be/3-uVgz16Ul4


Sounds great maestro i am impressers firstly was hard to me to hear what its doing because its really transparent :)!There are many in the box transparent comps but they definitely don't have that weight and attack !
_krm_01
KVRer
 
1 post since 26 Nov, 2014

Postby _krm_01; Wed Nov 26, 2014 3:58 pm Re: MS4 - A new stereo compressor kit, with www.compmusic.it

Hi,

what exactly is delivered with the PCB kit.
What tools do I need?
Where can i found any further instructions?

thx
quintosardo
KVRAF
 
3412 posts since 15 Jul, 2004, from Italy

Postby quintosardo; Thu Nov 27, 2014 1:46 am Re: MS4 - A new stereo compressor kit, with www.compmusic.it

There are two kits.

The first one includes PCBs (meter not included), components, connectors.

The second, optional, one includes case, barled meter, power supply, knobs, mains connector and cable.

With both kits you get exactly the 100% complete compressor you can see in the videos.

It doesn't need calibration. A multimeter is handy to check connections and measure component values. No oscilloscope needed.
Kits come with detailed instructions, also assistance is available through email.

Write here or send an email if you need more information.
Electronics and music: www.sknote.it
Recording in Italy: www.skstudio.it

Moderator: quintosardo

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