Pork Barrel 2019 (Boss CE2) Low Output Help!

Started by mickeybellinello, June 10, 2019, 07:38:07 AM

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mickeybellinello

Hi to all,

I just built my PorkBarrel 2109 Chorus. It works well but I noticed a slight decrease output volume when engaged.

Here's the schematic:



Any ideas? decrease R9, increase R11 or what?

Thanks

bluebunny

Assuming the wet/dry balance is OK, then increasing R11 will increase the gain of that last opamp.
  • SUPPORTER
Ohm's Law - much like Coles Law, but with less cabbage...

mickeybellinello

Done the r11 mod... now seems that the situation is better. I used a trimpot so I can adjust precisely the gain.
I also socketed r9 so in case I can adjust this too (is it a good or a bad idea?)...

patrick398

I can't see a whole lot of point socketing R9 when R11 is a trimmer. I've not had any sockets fail on me yet but it seems like this is a potentially unnecessary point of weakness.
Happy to be corrected as always :)

bluebunny

Changing R9 will affect the wet/dry balance.  You already have a "Blend" pot for that.
  • SUPPORTER
Ohm's Law - much like Coles Law, but with less cabbage...

mickeybellinello

Quote from: patrick398 on June 12, 2019, 07:26:25 AM
I can't see a whole lot of point socketing R9 when R11 is a trimmer. I've not had any sockets fail on me yet but it seems like this is a potentially unnecessary point of weakness.
Happy to be corrected as always :)

Make some tries and the r11 is enough for the gain problem. ;)

Quote from: bluebunny on June 12, 2019, 09:32:46 AM
Changing R9 will affect the wet/dry balance.  You already have a "Blend" pot for that.

Thanks so