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Topics - pierre67

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1
VFE Projects / Merman 22F caps
« on: July 07, 2018, 03:10:01 PM »
I forgot to include some 22F low ESR in my last order from Mouser...Can I use regular low profile 22F instead ?

2
Open Discussion / Happy 2017 !!!
« on: December 31, 2016, 11:00:10 AM »
Happy New Year 2017 for everyone !!!
Best wishes from Brussels  :)

3
General Questions / Lab Series preamp questions
« on: October 28, 2016, 03:50:05 AM »
Hi !
I got my Lab Series preamp project up and running, it sounds really good ! I still didn't calibrate the trim pots, only set the compressor trim to cero.
But before I put it in the enclosure I have a couple of questions , just to verify that the preamp is working as it should.  One is the Limit function, I get maximum compression with the knob all the way down...and the other one is regarding the Hi-Lo switch, signal is boosted in "Lo" position...it's this the way it was intended...?
Thanks for your help  :)

4
Tech Help - Projects Page / deathklaw volume
« on: July 31, 2016, 09:31:07 AM »
Hi !
My Deathklaw is working good but dry signal is a little below unity level and a little dark sounding. Everything seems to be correct...I'm double checking resistors and caps right now, but I really don't know where to look...any ideas will be appreciated, thank you !

5
General Questions / Demented Compressor pots
« on: March 05, 2016, 11:01:49 AM »
hi !
...can 25KA pots be used instead of 20KA pots in the Demented Compressor ?
And last one:can I use 620 ohm for those 619 ohm resistors ?
Thank you !!!

6
Tech Help - Projects Page / Laserwolf help...Solved (i'm a dork)
« on: January 05, 2015, 10:24:17 AM »
Hi !
So, yesterday I put toghether the Laserwolf project...Overdrive and delay works fine but Phaser not...I mean yes, but when I engage the phaser volume drops to allmost nothing...I can hear it swooshing but at a very very low level...Rate led is working, and so are all the pots.
The strange thing is that I dont get ground continuity in phaser's "G" pad.
I did the "scrip fix" and I was extra carefull to cut the trace, I used a 0.8mm drill bit for the job turning it by hand...I have ground continuity everywhere in the circuit except in the "G" pad of the phaser...
The voltage readings seems to be similar to the chart in the building document...Changed all Ic's, checked for solder bridges and components values...desoldered the scrip switch, the 4pdt and still nothing...
In any case, here's de voltage readings from a 9,7V regulated PS:

IC5:                                           
1   4.98v           
2   2.5V
3   5mV
4   5mV
5   2.85V
6   2.5V
7   0.55V
8   0.67V   
9-16   2.5V

IC4:
1   4.7V
2   4.7V
3   4.67V
4    3mV
5    4.67V
6    4.7V
7    4.7V
8    9.4V

IC2:
1    3.94V
2    3.94V
3    3.69V
4    2.6mV
5-6-7 varies
8    9.06V

IC3:
1    3.95V
2    3.95V
3    3.95V
4    2.5mV
5     3.95V
6     3.94V
7     3.74V
8     9.06V

IC6:
1     3.94V
2     3.94V
3     3.94V
4      2.5mV
5      3.94V
6      3.94V
7      3.94V
8      9.07V


...I'm really lost here...I can't find my mistake...I can post some pictures.
Thanks for your help !

Pierre

7
General Questions / Green Bean Pots
« on: May 10, 2013, 09:08:48 AM »
Hello everybody !
...I was just about to put together a Green Bean when I realize that in the BOM the drive pot is 500k B, in most TS project that I build drive pot is 500k A...The same with the level pot which is 100k A when usually is a 100k B...Is it better this way? I'm a little confused here...

thanks !

8
Tech Help - Projects Page / Zero Point SDX help (please) SOLVED !!!
« on: April 14, 2013, 10:54:30 AM »
Hi !
I'm Pierre, this is my first post here...but I was reading around for a while...
Yesterday I build my first Zero Point SDX which worked right away; as I had a spare board and enough parts to build another one, today I decided to do it. The only thing different with this one is the caps, I wanted to try some Wima caps to see if they would make any difference in the sound. This one don't work  ???
The sound is gated and there is an aw full motorboarding noise...I can tell true the noise that control knobs do what they are suppose to do, as well for the switches...

I have done some voltage readings in the IC's if it can help :

IC1
1  4.77v    5  9.54
2  4.77      6  4.78
3  4.75      7  4.78
4  0.01      8  4.15

IC2 and IC3 same readings
1  5.02        9  2.52
2  2.5         10  2.52
3  0.01       11  2.52
4  0.01       12  2.52
5  1.28       13  2.52
6  2.45       14  2.52
7  0.28       15  2.52
8  0.80       16  2.52

IC 4
1  4.77        8  4.77
2  4.77        9  4.77
3  4.68       10  4.75
4  9.54       11  0
5  2.34       12  4.75
6  4.77       13  4.77
7  4.77       14  4.77

IC 5
1 between 2 and 5?
2 4.77
3  4.54
4   0
5  9.54
6  between 2 and 7 ?
7  4.54
8  3.97

Any toughs? :-[
Thank you !!!

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