Author Topic: Big Dipper (Dipthonizer+) a Modified "Honey Dripper"  (Read 301 times)

Cybercow

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Big Dipper (Dipthonizer+) a Modified "Honey Dripper"
« on: September 24, 2021, 10:37:50 AM »
I was able to obtain a couple MadBean 2015 "Honey Dripper" (Colorsound Dipthonizer) PCBs for a custom commission request and got it built out with the requested modifications.

This is a sweet, versitile auto-wah sort of circuit from the 70's. Instead of a single, fixed filter, it has a 'formant' selector switch for generating (simulating) four different vowel formants with a sweep rate adjustment and a fuzz blend control. And while the "fuzz" is actually just a a pair of soft clipping diodes on a parallel drive circuit (opamp), the OD it provides adds some nice grit to the effect when desired.

Originally designed to fit into a 125B enclosure, the requested mods demanded a larger box, so I was able to get it all stuffed into a 1590BB enclosure.

The added modifications were a Low, High (EQ) and Volume circuit after the Dipthinizer circuit.

At the Volume midpoint, the pedal is at unity gain and gets a good bit louder after the Volume is turned up from the 'noon' position. The Lo & Hi controls give an exaggerated range of bass & treble. I selected a GuitarPCB "Tone TwEQ" for the added EQ/Volume mod.

This turned out to be one of the better auto-wah circuits I've ever had the opportunity to play with. When I started this project, I was unaware how rare the original Dipthonizer pedals are. Glad I acquired a second PCB to build one for my rig.

Video demo here: https://www.youtube.com/watch?v=iSSLvyh_174

So enough of the babble . . . . onto the circuit porn . . . .
Cybercow - aka: Mark Davis

 "Don't let your talent take you where your character can't keep you."

jimilee

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Re: Big Dipper (Dipthonizer+) a Modified "Honey Dripper"
« Reply #1 on: September 24, 2021, 02:25:45 PM »
Nice, and very elegant looking. I find that every time I build for someone else, I end up building another one for myself. Kind of a, "I want one!."
Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

Bio77

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Re: Big Dipper (Dipthonizer+) a Modified "Honey Dripper"
« Reply #2 on: September 24, 2021, 05:50:09 PM »
That looks sharp!  8)

I watched the video.  I noticed the sweep knob is only active last part of the turn.   I had this in my build.  I'd recommend adding a 2k resistor across legs 2 and 3 to convert the 10kB to a 10kC.  You can do it on the boxed circuit.   

https://www.madbeanpedals.com/forum/index.php?topic=31380.msg301981#msg301981

Cybercow

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Re: Big Dipper (Dipthonizer+) a Modified "Honey Dripper"
« Reply #3 on: September 25, 2021, 07:46:29 AM »
Nice, and very elegant looking. I find that every time I build for someone else, I end up building another one for myself. Kind of a, "I want one!."

Thanks Jimi. I suffer that same "me too" syndrome. ;)
Cybercow - aka: Mark Davis

 "Don't let your talent take you where your character can't keep you."

Cybercow

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Re: Big Dipper (Dipthonizer+) a Modified "Honey Dripper"
« Reply #4 on: September 25, 2021, 08:11:11 AM »
That looks sharp!  8)

I watched the video.  I noticed the sweep knob is only active last part of the turn.   I had this in my build.  I'd recommend adding a 2k resistor across legs 2 and 3 to convert the 10kB to a 10kC.  You can do it on the boxed circuit.   

Thanks for that Bio77. I noticed that too when I built it - even before stuffing it. It behaves the same as in the original Colorsound Dipthonizer too, only in reverse. (At least, in the demos I've seen.)
Cybercow - aka: Mark Davis

 "Don't let your talent take you where your character can't keep you."