the two-headëd BLÜE MONSTER rise again, as ver 1.1 :)

[Vallhagen]

BLÜE MONSTER
Dual Band FET OD, ver 1.1

Late 2012 i designed and build the Blüe Monster highgain thing. The story, schematic, a onesided pcb-etch design, and sound clips are here: http://www.madbeanpedals.com/forum/index.php?topic=6968.0

... and evolution shrinks stuff, even here at my workbench. And as i kept developing my EAGLE skills (all thanx to this fantastic Place, that must be said again and again!) and also realized that i can order fabbed PCB-s for a ... reasonable amount of money, i decided to design a twosided PCB for the Blüe Monster myself. Definately exciting to populate and box a fabbed pcb of my own design. And scary to hit the stomp for the first Power up.

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It is still the same Circuit as linked to above^^, but redesigned as a twosided pcb. The only main difference is the addition of a CLR and LED pad. The goal was to use boardmounted pots, make it fit in a BB enclosure, and i wanted to keep the "six pots gives a triangle"-design.

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In short: This is a dual band highgain overdrive. It splits the signal in two fully phase-compensated frequency bands after the input buffer. Those two signals are then separately distorted/overdriven in two dirt Circuits based around a 4049UBE, before they are mixed together and run through a tunable two-pole LP filter for additional soundshaping. Finally a master volume.

It has been some interest around here to buy these fabbed PCB-s. I will come back regarding that subject, i want to try this very box a bit more before i start to spread them:)

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Some pics:

the PCB


and the PCB with pots mounted:


Guts:


The Look:


again:


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Look! I'm shrinking! Same same but different.


Cheeeeeerio folks!

[muddyfox]

very cool! what are the jumper wires? i cant really tell on my phone screen...


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[wolfingsworth]

very cool! what are the jumper wires? i cant really tell on my phone screen...


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looks to me like ribbon cable connecting a dual gang pot. This is really cool! All those pots in a really nice layout. Good work Bengt!

[Vallhagen]

Thanx gentlemen!

And yes, it is ribbon wire connecting the dual gang pot to the pcb. I decided to go with a dual pot with solder lugs, not boardmounted.

[hammerheadmusicman]

Awesome work again! Now the board is verified, does that mean some are up for grabs? If so, put me down for one!!

George

[jkokura]

Love it! Basically the same look as I was going for with my build.

Jacob

[midwayfair]

Excellent PCB layout, Bengt!

[lincolnic]

This looks great!

[kothoma]

Mønströüs, so to say.

[Vallhagen]

Excellent PCB layout, Bengt!

Thanx Jon!

This looks great!

Thanx again!

Mønströüs, so to say.

Yep. a lil scaaary ... Hehe i dont have that "danish ö" on my kb

Love it! Basically the same look as I was going for with my build.

Jacob

Thanx Jacob! And thank you for teachin me/us so much about EAGLE. Without your videos i wouldnt have this design done!

Awesome work again! Now the board is verified, does that mean some are up for grabs? If so, put me down for one!!

George

Thanx:)

Yes, some are up for grabs... verrrrry soon. I have one more thing to do, that is to take it down to my rehearsal room and do some fullvolume A/B testing, comparing this one to the earlier version. I want to verify that i haven't added anything strange ... as increased noise level or other artefacts. I think this can be done today.

I have re-read through the project thread, taking notes about earlier interest of the PCB. And i have one pcb put aside for each of you who has raised your hand in interest. So, i have one pcb for you George, as well as one for kothuma.

I'll be back:)

[kothoma]

Mønströüs, so to say.

Yep. a lil scaaary ... Hehe i dont have that "danish ö" on my kb

Neither do I... (It's [Alt]+155 on Win and [Alt]+o on Mac.)

And i have one pcb put aside for each of you who has raised your hand in interest. So, i have one pcb for you George, as well as one for kothoma.

Thanks a lot! I'm really excited about it.

[Vallhagen]

Neither do I... (It's [Alt]+155 on Win and [Alt]+o on Mac.)
..

pørfëct!

[pickdropper]

That looks fantastic, Bengt.  Great job!

[ThePastRecedes]

Hey there,

I'll take a PCB too if there are any left.

Thanks!

[Vallhagen]

Thank you Pickdropper!

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ThePastRecedes: Yes, i have one for you too:) ... But actually i think that was the last one.

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Cheers!