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Messages - b.riesel

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ok, i will try...thank you for your help and your patience!
best regards

How can I check, if the Lunchbox can stand some inrush? I use a Fredenstein Bento 8.
I have 2 MP+EQ Combis in my Box.

Hi Jean-Pierre
I now have both of my MP573 connected to the EQ573II via the internal conexin-cable. So far, everything works fine. But when I switch of my whole setup and switch it on again, I have some pulsing high level on the outputs, when the EQe is set to pre.
When I switch to XLR or off, it disappears, as long, as I switch back to pre. After a while this behavior is gone. As if a condensator is discharging.
Do you have an idea, what could be wrong, or what I could check for?
Best regards

MP573 Microphone preamplifier / Re: MP 573 - no output anymore
« on: July 11, 2022, 07:42:39 pm »
Hi Jean-Pierre
That was easy...sorry...I completely forgot that I removed the jumper...everything is fine now!
thank you!

MP573 Microphone preamplifier / MP 573 - no output anymore
« on: July 08, 2022, 10:39:24 am »
Hi Jean-Pierre
I finished my MP 573 an did the setup as discribed. Everything was as it should. I did some testrecording with all kind of mics and the DI. Everything was really great sounding.
Next step was to connect the MP with my EQ573II. But this didn´t work. I tried a bit and decided to run both units separately for the moment. The EQ still works perfect, but the MP now dosn´t have any output. I can see the Input-LED reacting on the signal i feed it with. That seems to be normal. With more Gain the LED stays green, when lowering, it only lights up, when there is a hotter signal.
But on the output there is nothing.
I tried different slots of my Bento-Case, also the one, where my EQ573 is running without issues. 
Now I have no Idea what to do next. Can you give me some support?
Thank you so much in advance,
best regards

EQP501 Passive Equalizer / Re: Problem with the Potentiometers
« on: June 29, 2022, 09:36:53 am »
Problem solved
sorry to disturb you:
I pulled the screws of the red knobs to heavy. with releasing the screws a bit, everything runs smooth.

EQP501 Passive Equalizer / Problem with the Potentiometers
« on: June 29, 2022, 09:25:39 am »
Hi Jean-Pierre
I´m just before finishing my third SoundSkulptor Module, the EQ-P501.
I have a slightly problem with the potentiometers.
When I turn the black knobs, the red ones move with them and vice versa.
There do not run free, as it worked with my EQ573.

Do you have an idea, what i did wrong?
thank you in advance.
best regards

EQ573 Equaliser / Re: cracking noise, when switching Lowcut Filter
« on: June 28, 2022, 08:51:00 am »
Hi Jean-Pierre
thank you for your quick reply. No, if ther´s no signal, there´s no crackling. It´s only while stepping through the lowcut, when there´s a signal running through.
Not a big thing...i just wonderd, if did a mistake ;-)
best regards

EQ573 Equaliser / Re: cracking noise, when switching Lowcut Filter
« on: June 26, 2022, 12:03:46 am »
Hi Jean-Pierre
I checked the the caps...everything seems to be there something else, I could check?
best regards

EQ573 Equaliser / cracking noise, when switching Lowcut Filter
« on: June 13, 2022, 02:18:08 pm »
Hi Jean-Pierre
I just finished my 2nd SoundSkulptor Projekt, the EQ573-II. It was a pleasure to build it an everything is running so far quite well, except some cracking noise, whenever i switch the lowcut. It sounds like the crackling in the demo-video on your web site (Build and review of the EQ573), when the on-off switch is used.
Is this behaviour normal, or is this a sign, that i did something not precise enough or wrong?
best regards

CP5176 FET compressor / Re: Need help to find the mistake
« on: June 03, 2022, 05:50:50 pm »
Hi Jean-Pierre
thank you so much for your replay.
I´m now back in my studio and checked the feedback-thing.
I don't know, what it was. Today it's gone.
I calibrated everything for a second time and checked it out with some musical signals.
Everything seems to be fine now and behaves as it should. Further more, the compressor sounds fantastic!

So what do you think? Should I replace the DOA?
Or should I care about the input voltage at TP1?

Today I ordered a some more stuff and also a separate DOA. So I could use it for the CP5176.
Best regards and thank you so much for this fantastic peace of gear and also this wonderful experience, building it. 

CP5176 FET compressor / Re: Need help to find the mistake
« on: June 02, 2022, 10:51:48 pm »
now I did further attempts to setup the compressor.
now I could finish all the steps of the setup guide.
but there's one thing, which seems to be wrong.
With very little input and output gain, I immediately get a feedback in the signal.

I tried to reduce the volume in the FET bias setup with P6, but there also, the signal resonates very soon.
d you have some help for me?
thanks in advance

best regards

p.s. and is it really necessary, to connect the module with the first slot in the lunchbox and all the other modules disconnected?

CP5176 FET compressor / Need help to find the mistake
« on: June 02, 2022, 09:52:24 pm »
Hi guys
I´m on my way to finish my first DIY CP 5176. I solders everything and starts the setup-process.
unfortunately, here something seems to be wrong.

I followed the setup process and at step 8, when I tried to adjust P5 nothing happens. So I started the checklist "In case your CP5176 doesn't work as expected"

At Step 2, I got 580mV DC on the Top Pin of L1 of the SK25. As far as I understand your Checklist, this seems to be to much.
The other Checkpoints are as they should. Maybe point D has a slightly bigger tolerance (-0,16 DCV instead of - 0,2 DCV).

Step 3 brings the following values:

TP1 = 0,07 V AC
TP2 = 0,34 V AC
L1 Top = 1,85 V AC

Step 4
The ratio-values are very closed to the ones, you describe.
TP6 values reach from -1,4 to - 5,4 VDC
TP5 value is 0

Can you give me an idea, what to do now?
thank you for your help!

First Aid / Re: Parts missing
« on: May 31, 2022, 02:29:51 pm »
super...thank you so much for your quick help!
The CP 5176 is my first DIY-projct.
So far, it was a real pleasure to build it. Everything is so well prepared and fits perfectly.
Now I hope, my build-up will also fit well and run like hell ;-)

First Aid / Parts missing
« on: May 31, 2022, 09:33:55 am »
Dear Soundskulptor Team
I purchased a CP5176 Kit. I already did the soldering. But there are 2 parts missing, i can´t find them in the box.

1. Gain reduction meter - U6 (LM317LZ)
2. SK25 - D4 (BZX55C 5V1)

Instead of that, I had 11 of the Signal Diode 1N914 (stripped together). One of these ist left now.
So, all in all, i have 2 parts missing and one left.

Can I get the missing parts from you?
Thank you so much in advance and best regards

First Aid / Problems identifing Parts
« on: May 27, 2022, 09:09:49 am »
Hi guys
i´m an absolutely DIY-beginner and started to build my firstr CP5176.
Identiofing the Resistors was easy. But now i have to identify the Ceramic Capacitors. On some, i can read the marking. On the blue ones, it´s impossible to read the marking. When i measure with the ultimeter, i get values, that are only near the value at the part list.
Is there a "right" way, to cope with that?
best regards

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