Print Page - My Nautilus, but....

Title: My Nautilus, but....
Post by: jfk1063 on February 25, 2013, 09:01:15 PM

Hi,

This is my Nautilus, but....

There is so much gain on the gainpot. I did change it to reverse log, but still too much.

I set the voltrim to zero, but still it is loud.

Do you have any tips or did I do something wrong?

Thanks!

John

Title: Re: My Nautilus, but....
Post by: chordball on February 25, 2013, 11:02:53 PM

I dig it!

Regarding the volume, the suggested mod is to lower the value of R24. One person said 39k was good there. I had way too much volume in my build as well and I have a 39k there now, but haven't really had a chance to completely evaluate it.

Hope that helps!

Title: Re: My Nautilus, but....
Post by: jfk1063 on February 26, 2013, 08:29:58 AM

Thanks, but R24 is allready 10K, so you mean increase it to 39K?

Title: Re: My Nautilus, but....
Post by: chordball on February 26, 2013, 02:00:13 PM

Oops, my apologies there! You're correct though.

Title: Re: My Nautilus, but....
Post by: eldanko on February 26, 2013, 08:28:30 PM

Guessing you may have tried this, but... try going the other way on the vol trimpot? For whatever reason, the trimpot I used worked in reverse... I thought I had it set at zero when I fired up, and it was actually maxed...

Title: Re: My Nautilus, but....
Post by: garfo on February 27, 2013, 05:25:27 PM

so,i did experience the same.try to cross a resistor(around 4 M) on the gain pot from lug 1 to 3.that will make the pot somewhat around 800k and it will be more useful.also use a reverse audio 1MC pot.im not sure about the value of the resistor but it is around 4 M.perhaps 4.7 m.google for a parallel resistor calculator and figure out a way of reducing the value of the pot to around 800 k

Quote from: jfk1063 on February 25, 2013, 09:01:15 PM
Hi,

This is my Nautilus, but....

There is so much gain on the gainpot. I did change it to reverse log, but still too much.

I set the voltrim to zero, but still it is loud.

Do you have any tips or did I do something wrong?

Thanks!

John

Title: Re: My Nautilus, but....
Post by: jfk1063 on February 27, 2013, 10:10:38 PM

Thanks!
I will try it asap and will let you know.
John

Title: Re: My Nautilus, but....
Post by: garfo on February 28, 2013, 12:12:57 PM

Search the forum , I believe the build reports.Someone did a video from the nautilus and everything is explained to detail there.

Quote from: jfk1063 on February 27, 2013, 10:10:38 PM
Thanks!
I will try it asap and will let you know.
John

Title: Re: My Nautilus, but....
Post by: hammerheadmusicman on February 28, 2013, 04:29:11 PM

http://www.madbeanpedals.com/forum/index.php?topic=7142.0

Title: Re: My Nautilus, but....
Post by: garfo on February 28, 2013, 05:28:02 PM

also cross a 5.1 k resistor across thê sweep pot.apparently that will prevent oscillation from happening.this modd is suggested by Bryan.in my case i will do it using a resistor around 6k

Title: Re: My Nautilus, but....
Post by: pedalhealer on March 21, 2013, 07:16:18 PM

Quote from: jfk1063 on February 25, 2013, 09:01:15 PM
Hi,

This is my Nautilus, but....

John

Which cable is on the peak LED? They are not there on original schematic!

madbeanpedals::forum

Projects => Build Reports => Topic started by: jfk1063 on February 25, 2013, 09:01:15 PM