Trombetta Mini-Bone: "Trumpeter Swan Fuzz"

rwl

Well-known member
Build Rating
5.00 star(s)
This is a report on my build of the Paul Trombetta Mini-Bone (on PedalPCB as the Trumpeter, but I laid out my own PCB for this build). I saw this in one of the "favorites" threads... and it is now one of my favorites.

trumpeter_pro.png
Inspiration
This is one of the most obvious names for a pedal, since I saw the PPCB "Trumpeter" name - so why not go with the Trumpeter Swan? These are huge birds, and they're one of the big migratory birds that visits the PNW in the winter (these, Tundra Swans and Snow Geese are the big three that arrive in tens of thousands in the Skagit Valley, between the Canadian border and Seattle). It's a real treat to see so many of these huge birds.

I knew I had to go with a jazz theme, and I really wanted to have a swan playing trumpet - I was picturing the swan on stage in a smokey nightclub. In the end, this didn't work out. It's just really hard to convincingly make a swan look like it's playing a trumpet. So instead, I went with a jazz look - trying to echo the style of Saul Bass 60s/70s jazz or Hitchcock movie posters. There's one problem, I wasn't sure about the colors of the knobs and enclosure - part of the background needs to be slightly lighter to contrast better with the enclosure, and if the orange in the text was lighter it would match the knobs. Maybe I'll make another with the colors tweaked...

Still, I'm really happy with the way this turned out.

The Build
I built the PPCB version of this pedal first, and really liked it (the Trumpeter). Unfortunately, the PPCB version is unusual, I think it must have been an early layout, and the controls are really odd, stacked in 3 rows. That covered too much of the enclosure for me. Luckily this is a very simple pedal, and it was easy enough to lay out a PCB with controls in the more typical 2-row 6-hole layout of other PPCB layouts.

These were really easy builds, not many parts, that worked right away.

The Pedal
I'm a sucker for pedals that imitate other instruments, and this guy really does have the tone of a raspy trumpet - especially around the 12th fret on the G/B strings. I had a blast playing "When the Saints Go Marching In" after I first built this.

It's not a one-trick pony, though. It only sounds like a trumpet with the "Bone" turned up. With other settings, it's a pretty good fuzz on its own, so it doesn't just hog a space on the pedalboard.

Firsts
  • 🐟 First Saul Bass-inspired pedal
Ratings
  • Build: 5/5 🌟
  • Pedal: 5/5 🌟
 

Attachments

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Hope all is well!
Where are you buying your parts?

Tayda doesn't give a shipping quote.
Stompbox parts ask $14.50 shipping for a few parts and an enclosure. $40 order.
 
Hope all is well!
Where are you buying your parts?

Tayda doesn't give a shipping quote.
Stompbox parts ask $14.50 shipping for a few parts and an enclosure. $40 order.
I get 90% of my stuff at Tayda. PCBs mostly from PPCB or fabricated from JLC. Occasional parts from stomp box, mouser, or love my switches.

Shipping is always expensive except JLC. Tayda shipping used to be cheap but I haven't bought recently. It helps to buy in bulk.
 
Thanks for the reply!
It's been a while since i ordered from Tayda.
They don't offer a quote, since the Tariffs.

Any advice for the Trumpeter? I'm planning on building two this time. So far i've built two zen drives, a 5pounds of fuzz and a green ringer clone, Fixed a wah.

Thanks!
 
Hope all is well!
Where are you buying your parts?

Tayda doesn't give a shipping quote.
Stompbox parts ask $14.50 shipping for a few parts and an enclosure. $40 order.

Mouser (most passives), SBP (most pots), Love My Switches (most enclosures), Smallbear. PPCB has more than you'd initially think if you haven't browsed the components section.

Shipping is getting bad everywhere due to gasoline prices. Mouser has kept theirs down fairly well, but while they have great prices on some things, they're ridiculous on others. Like, if you asked where you can by a 16mm pot for $7.85, Mouser is there for you all day.
 
Thanks for the reply!
It's been a while since i ordered from Tayda.
They don't offer a quote, since the Tariffs.

Any advice for the Trumpeter? I'm planning on building two this time. So far i've built two zen drives, a 5pounds of fuzz and a green ringer clone, Fixed a wah.

Thanks!
Are you sure? I just checked and Tayda definitely still gives you a shipping quote. Go to your cart and look on the right side of the screen.
 
Oh! Thanks, will check again but I already made the order with Stompbox parts. Next time then..
Edit: checked Tayda and now there's a shipping quote. $23 shipping.

Oh well! At least the TL072 are cheaper than Tayda. Planning to build a Thermionic deluxe after those Trumpeters.

Could you share about flipping Q² ??
Thanks a lot for the replies.
 
Last edited:
Sweet color scheme and artwork. I would recommend soldering at least one leg of each transistor if you haven’t already. I’ve had them fall out of the socket
 
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