Coming soon to runoffgroove.com: Thunderbird

[B Tremblay]

We've developed a new circuit that we feel is our best work thus far. Over ten years ago, we began our amp-inspired distortion odyssey with the Thunderchief and later refined it as Thor. For the third time we have focused our efforts on capturing the majestic sound of a Marshall Super Lead amplifier, but this time we set aside size and simplicity constraints in favor of getting the best results sound-wise.

Here's a clip of Thunderbird recorded direct using a 4x12 cabinet impulse response. The guitar is a Van Halen style with a Floyd Rose bridge and single humbucking pickup.

http://runoffgroove.com/thunderbird1.mp3

[Kipper4]

Nice one ROG. Sounds Great.
Looking forward to seeing it.

[deadastronaut]

very nice, right up my street!..

cleans up nicely too...

[Ben N]

Careful, boys.

[deadastronaut]

call it famous grouse and i'll build it regardless of how it sounds..

[~arph]

Looks like we lost some data here..

[sajy_ho]

Wow, there's some 'Breaking News' here! can't wait for the schem...

[Gary]

Another brief clip.  This time with all controls (except Level) at 12:00.

http://runoffgroove.com/thunderbird4.mp3

I play in a classic rock cover band and have gigged the pedal heard in the clips for 3 shows and 12 rehearsals at this point.  I have received positive comments on the sound.

[Frank_NH]

Sounds great Gary (some Led Zeppelin riffing going on  ).  What guitar did you use?  Also, was this direct to a sound card or from a miked amp.
I'm also hoping we can have a vero layout fairly soon after the release, as that is my preferred building method (unless there is a prefab PCB).  Good work, Runoffgroove!

[~arph]

Yes and what are the settings for clips 2 and 3?    clip 2 is a bit noisy

[Davelectro]

Sounds great!

[modsquad]

I stand by my original comment...Holy Crap...I haven't build anything in a long while...but I am itching to build this thing to see what it sounds like with my setup....again...wow...

[Gary]

What guitar did you use?  Also, was this direct to a sound card or from a miked amp.

Sorry, I forgot to state this was recorded direct with cabinet IR added in the DAW.  Guitar was a Parker PM20 (similar to a Les Paul) with DiMarzio PAFs.  Left channel is completely dry.  Right channel has a touch of reverb.

[slacker]

I'm also hoping we can have a vero layout fairly soon after the release

I'll be on it as soon as the schematic is available

[Frank_NH]

I'll be on it as soon as the schematic is available
[/quote]

Thanks!  Perhaps the ROG folks could provide links to verified veroboard layouts when they become available.

[J0K3RX]

Interested I am! Funny thing, I have also been working on a Marshall fet circuit but have been using some Cameron/Jose/Aldrich/Fortin schematics to see if I can get that really over the top high gain VH sound. I have some good results so far!  I will post some schematics and clips when I am home and not on this damn phone... I have been obsessing over this for a long time now!

[Gary]

Before we had the data loss, STM asked what choice of semiconductor(s) were being used for this circuit.

Here's a clue courtesy of a google search:
https://twitter.com/runoffgroove

[samhay]

Sounds great.

Looks like 3 sets of clipping diodes with 3 dual op-amps and a charge pump?

[bool]

Whole lotta opamp.

And 10 diodes for the tone (sans one for the "Volts").

Runoffgroove gone Rockman.

[Johan]

So....One opamp stage for every tube stage in a plexi? ..Each opamp stage emulating what's going on in the corresponding tube stage? ...sort of like the lhx2  ?..sounds real good. ..