This Week on the Breadboard - ROG Britannia

The 4th band catches alot of Members out!

I tell ya what gets me is the brown and red in low light. 1k/10k....

This is not a troubleshooting thread. If you want help with troubleshooting, please post in the Troubleshooting forum. Provide the following info:

My bad. I usually will dabble with your mods and thought this might be a good place to ask about how the gain is. Didn't realize ROG had a separate sound sample page. I got it sorted. Anyway, didn't mean to derail your thread. I had already popped my board but did go ahead and remove the 100n by the treble. Agreed on the brilliance control as well!
 
An update. I was on a Vox kick and some of the other Vox-in-a-box* pedals didn't do it for me. So I rebuilt this one and found a few more things to tweak. I added a bright switch at Q1 for some extra sparkle. I reduced the BASS pot to 25K because there was only about 1dB of change from 7 to 10 with A50K. I increased the BRILLIANCE pot (I prefer to call it PRESENCE) from B100K to B250K and reduced C10 from 680pF to 510pF. A little more range in both directions. But the big mod was putting a 50K trimpot in series with D5 & D6 so we can raise the headroom and adding a MASTER VOLUME pot to the last stage to further increase the clean headroom. It is now possible to play clean without turning the guitar volume way down. I recommend setting the Headroom trim to 50%. If you want more crunch, then turn it down a bit. I tried putting a booster in front, but to me it was overkill. Do not omit R26. Mine oscillates when LEVEL is dimed and R26 isn't there.

ROG britannia - cb mod v1.2.png




* Vox-in-a-Box by Dr. Seuss
 
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