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Messages - Domdec314

#1
General Questions / Re: Laserwolf docs
November 26, 2019, 05:17:29 AM
Does anybody have a copy of the Laserwolf docs?
#2
I use Triad psu's frequently. Never had a problem with them. I include a Triad 24v psu with a bass preamp pedal I sell.

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#3
Just going off of Mouser, it seems like the 1n400x diodes are being obsoleted.

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#4
I've had this Mastech multimeter for a few years now. It's been fantastic.

Mastech MS8268 MS8261 Series Digital AC/DC Auto/Manual Range Digital Multimeter https://www.amazon.com/dp/B000JQ4O2U/ref=cm_sw_r_cp_api_pkLDxb6N9YMH1


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#5
I use 9mm Bourns pots from Mouser. I don't know if they're any better than Alpha, but I've had no issues with them.

http://www.mouser.com/Search/ProductDetail.aspx?R=PTD901-2015K-B503virtualkey65210000virtualkey652-PTD901-2015KB503
#6
My brother loves the pedal! Thanks for the help, guys.
#7
Interesting. The video linked in the PDF show a much more subtle difference between the two modes. (http://www.youtube.com/watch?v=nZwEXghYrp8). It seems weird to me the adding a phase stage would diminish the tone, but if that's the way its suppose to be, then I call the project complete.
#8
Update: I got frustrated and started over with a new board. The LFO section is working now, but there's still something weird going on with the switch. With the switch in the left position (5-stage) the tone is full and bassy, but in the right position (6-stage) it's weak and thin sounding. I'm using the same LM13700 and TL074 ICs from the previous build. Is it possible one of them might be the issue?

Here's a quick sound clip I just recorded. The Ball pot is full up and the Speed pot is about in the middle. First you hear the clean signal, then the pedal set for 5-stages, then finally set for 6-stages.
https://soundcloud.com/highmileage/phasertest
#9
Quote from: Scruffie on December 29, 2013, 01:17:05 PM
Lift one leg of R47 & R51 and see if the TL062 voltages change.

Here are voltages now:

TL062
1. 0.6v
2. 1.6v
3. 0.2v
4. 0v
5. 4.4v
6. 0.6v
7. 8.6v
8. 9.2v
#10
I had a socket there, but the input jack wouldn't fit when everything was in the case. I know I shouldn't have assembled it in the box but I was in a hurry and was a bit cocky since the last 12 or so pedals I've built came together without issues. Also, the issue was still there when the TL062 was socketed, so I'm pretty sure I didn't burn it.
#11
Is it possible that the TL062 is bad? Like I said, I don't have a strong understanding of how phaser work so I'm really not sure what to look for. Is the TL062 suppose to be passing audio? My audio probe is coming up silent.
#12
Here are two pics of the board. I went over every pad and made sure they were all shiny. Unfortunately, that didn't fix it.

#13
Here ya go. The voltages were all steady. No fluctuations. I'm using an analog multimeter so these are close approximations:

IC1 (TL074)
1. 4.4v
2. 4.4v
3. 0.8v
4. 9.4v
5. 2.4v
6. 4.4v
7. 4.4v
8. 4.4v
9. 1.4v
10. 1.2v
11. 0v
12. 2v
13. 4.4v
14. 4.4v

IC2 (TL062)
1. 0.8v
2. 0.6v
3. 0.4v
4. 0v
5. 4.4v
6. 0.1v
7. 8.8v
8. 9.4v

IC3 (LM13700)
1. 1.4v
2. 0v
3. 4.4v
4. 4.4v
5. 4v
6. 0v
7. 4v
8. 4.5v
9. 4.4
10. 3.6v
11. 9.4
12. 3.6v
13. 4.4v
14. 4.4v
15. 0v
16. 1.4v

IC4 (LM13700)
1. 1.4v
2. 0v
3. 4.4v
4. 4.4v
5. 4v
6. 0v
7. 4v
8. 4.4v
9. 4.6v
10. 4.9v
11. 9.4v
12. 4.9v
13. 4.4v
14. 4.4v
15. 0v
16. 1.4v

IC5 (LM13700)
1. 1.4v
2. 0v
3. 4.4v
4. 4.4v
5. 3.6v
6. 0v
7. 3.6v
8. 4.6v
9. 4.4v
10. 5.4
11. 9.4v
12. 5.4v
13. 4.4v
14. 4.4v
15. 0v
16. 1.4v
#14
I'm having trouble with my Stage Fright. The sound is cleanish. There's no phase effect. The Speed knob doesn't do anything and the Rate LED doesn't turn on. With the switch to the left, the Balls knob make its bassier as it's turned clockwise. With the switch to the right, the tone is weaker and tinny and the Balls knob make it tinnier as it's turned clockwise.

I put an audio probe on it, but I'm really not sure what to look for. I've never done a phaser before. There doesn't seem to be any audio going in and out of the TL062, but I'm not sure if there's suppose to be. The trimmer doesn't seem to do anything until roughly the last 5% (clockwise). At that point, the tone gets honky, as if the phase was paused.

The only substitution I made is a 3.3k resistor instead of a 3k resistor.

Any help would be greatly appreciated. I was hoping to have this for my brother for Christmas, but I procrastinated and left no room for errors.  :(