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Old 17th January 2008, 10:08 PM   #71
Brion55 is offline Brion55  United States
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The major problem with the dual concentric pots for panning (passive) is that when both pickups are being used, the output is always less than full volume.
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Old 23rd August 2011, 08:55 PM   #72
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Does anyone have the layout of this project 3 bands.

thankyou.

Samuel Martins
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Old 24th April 2014, 06:31 PM   #73
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Hello everyone. I did the 3 band version on a breadboard, but the high does not change anything. What can it be? Thank you in advance
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Old 25th April 2014, 12:19 PM   #74
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A lack of information?
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Old 27th April 2014, 02:17 AM   #75
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Thank you Jarno!

Rode one and tested it on a bass, but the high does not work. Does not change while turning the potentiometer. I appreciate the help my friend
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Old 27th April 2014, 05:54 AM   #76
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Quote:
Originally Posted by Jarno View Post
A lack of information?

Hello friends. Build this project but the high does not work! Can anyone help? This happened to anyone? Tested on my bottom, with the capacitors for bass. Big hug to everyone!
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Old 27th April 2014, 12:21 PM   #77
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Originally Posted by sangram View Post
use the switch to change resistor value in the feedback network.

Usually dropping another resistor in parallel with the feedback resistor (-in to ground, not the o/p to ground) should give you a gain boost, but it shouldn't overload the opamp or anything, so keep the value sensible.

If you're trying to vary gain using a pot you would need to ensure that if the pot decides to go to heaven at any point in time (wiper not conducting or wiper turned fully one way or the other) the minimum feedback ratio is maintained through fixed resistors, usually in series and parallel with the pot.

Hello Sangram. Help me please! Put RG1 RG2-10k-1M. But is distorting a bit. Could confirm if these values ​​are correct? Thank you for listening!
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Old 27th April 2014, 12:49 PM   #78
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Originally Posted by sangram View Post
use the switch to change resistor value in the feedback network.

Usually dropping another resistor in parallel with the feedback resistor (-in to ground, not the o/p to ground) should give you a gain boost, but it shouldn't overload the opamp or anything, so keep the value sensible.

If you're trying to vary gain using a pot you would need to ensure that if the pot decides to go to heaven at any point in time (wiper not conducting or wiper turned fully one way or the other) the minimum feedback ratio is maintained through fixed resistors, usually in series and parallel with the pot.
Grateful for having responded Sangram. It is this project. I do not have much knowledge in electronics infeizmente, but thank you if you could explain to me in simple terms.
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