Bandit of Arizona (Boss BF-1) flanger

blackhatboojum

Well-known member
Here’s one that’s long overdue for some recognition. I think I actually boxed this baby up back in July but, was too focused on my own crap and quite frankly, was too lazy to give it a proper build report. That’s pretty sad considering this flanger is in constant rotation with the flanger position on my pedal board but hey… I’m giving her attention now so, it’s all good right?

This is a Boss BF-1 inspired flanger and the pcb for this build is courtesy of my homie from across the pond, @zombie_rock123 . It’s a long story on how we started chatting and this whole thing came to be but, the important bit is, this flanger actually turned into a sort of collaboration between Lucas and I. When I initially put this build together, it wasn’t quite right and was not sounding very flanger like. After some messages back and forth, applying my own circuit knowledge, and several component value tweaks here and there, we came up with a working MN3007, 9v powered, BF-1… or at least I think so 😂. Having never played through an actual BF-1, I can’t say for certain it sounds exactly like one but honestly, I don’t care. It sounds great as is and if it’s not a BF-1, then Lucas stumbled onto an original gem of a flanger.

In a lot of ways, it reminds me of an MXR flanger with its sound and sweep but, it’s definitely got its own mojo going on. It’ll do that big, fat, jet flanger kind of sound but, it also has some unique wackiness on tap when you crank up the rate and res. There’s also a kind of “rawness” to it that I haven’t heard in other flangers I’ve played. Maybe it’s due to the lack of an input buffer, or the filtering but, it’s definitely unique. One thing I do know that’s true to the original BF-1 is the clock speed. Measuring the min and max speed on the manual knob gives me 40kHz to 1mHz and that’s bang on with the original Boss BF-1 service notes. This doesn’t make it BF-1 official but, close enough for a hack like myself who just solders shit together in his garage.

For the enclosure, I had to give this one an Arizona treatment. I already have a Baron (BF-2) and a Hero (HF-2) so, I had to go with a Bandit to round out my “of Arizona” flanger collection. The bandit pictured on my enclosure is none other than Pearl Heart. Lady bandit of Arizona. Rather than typing out another novel on AZ historical figures, I’ll just leave a link to click on if you want to know her story.



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I do recall playing an original back when it was new (sorry but the wrinkles are showing now...) and other than the big form factor I was much more enamoured with a then recently purchased CE-1 to take much notice. Damn I wish I still had that pedal.

Superb build and very much digging the build set.
 
Superb. What a classy series!
Many thanks!
The undisputed king of flangers graces us with his presence once again. Impressive build!
Thanks Will. I think you meant to say “obsessive nitwit” instead of “undisputed king.”

Thanks Rob!
Awesomeness as always.

If you want to compare Miss Hart to an original BF-1, I can loan you mine.

Many thanks! I may have to take you up on that offer 🤔.
I do recall playing an original back when it was new (sorry but the wrinkles are showing now...) and other than the big form factor I was much more enamoured with a then recently purchased CE-1 to take much notice. Damn I wish I still had that pedal.

Superb build and very much digging the build set.
Appreciate the compliments.
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Super cool. If I remember correctly the BF-1 had a SAD1024 which is 2 512 stage delay chips. You have to adjust your frequencies accordingly, depending on how they used the stages (series or not). Might be fun to hear the 3204 in there since you have some around.
Yep. The original had the SAD1024 in it. Lucas actually gave this one the old SAD1024 to MN3007 treatment like the electric mistress and the mxr m117 so, I can’t just drop in a 3204. I can definitely use a breadboard and some jumpers though🤔. I want to dive into this circuit some more in the future because I know some improvements could be made. Getting the clock range into the spec sweet spot was honestly a happy accident on my part.
 
"Yep. The original had the SAD1024 in it. Lucas actually gave this one the old SAD1024 to MN3007 treatment like the electric mistress and the mxr m117 so, I can’t just drop in a 3204. I can definitely use a breadboard and some jumpers though🤔. I want to dive into this circuit some more in the future because I know some improvements could be made. Getting the clock range into the spec sweet spot was honestly a happy accident on my part."

Oh, my bad, forgot about the 3007. Wrong voltage for the 32xx series. Was there a 512 stage 30XX chip?
 
"Yep. The original had the SAD1024 in it. Lucas actually gave this one the old SAD1024 to MN3007 treatment like the electric mistress and the mxr m117 so, I can’t just drop in a 3204. I can definitely use a breadboard and some jumpers though🤔. I want to dive into this circuit some more in the future because I know some improvements could be made. Getting the clock range into the spec sweet spot was honestly a happy accident on my part."

Oh, my bad, forgot about the 3007. Wrong voltage for the 32xx series. Was there a 512 stage 30XX chip?
There was actually. The MN3004 is a 14 pin 512 stage BBD. They’re even more rare than the MN3204 though.
 
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