Based on EHX Electric Mistress, adapted for the right functionality at 9v.
It offers very warm and rich flanging while maintaining low noise operation and flexibility in its controls.
Featuring the following additions to the original circuit:
- A buffered clock signal to the BBD
- FX loop for through-zero flanging
- Output gain stage to match or exceed the bypass volume.
For the correct operation of the Electric lover must be calibrated properly, adjusting the
Clock and Bias trimmers, both works independently but will need re-adjustment through
the calibration process.
The Clock trimmer is really reactive, so be prepared to spend some time dialing the sweet
Don’t be intimidated by all the following steps regarding the calibrating process. Is actually
simpler than it how it looks like, we ensured to write it in the most comprehensive way,
explaining the function of each trimmer and each knob on this build.
First of all, before plugging the board into your guitar and amp, before plug in to DC, you must
follow these steps. (There is no problem if you have already connected; we suggest doing
this before so you won’t have to deal with all the extra wires around)
- Set Clock and Bias in the middle, at 12 o’clock.
- Set T1 and the Rate knob fully counter-clockwise
- Set Range, Volume, and Feedback in the middle, 12 o’clock.
- Filter Switch pointing to the right position.
- Plugin your guitar and amp to the board, and the DC power supply, this
project works great at 12V, but also could be feed with a standard 9v
power supply. Never plug it on 15v, this would be risky for the MN3007.
- Now the signal should be going through the effect, although you may not
hear any flanging yet. If you can’t hear any signal through the effect, double-check all your solder points, components on connections to ensure
everything is okay.
- In order to get the flanging effect to show up, adjust the Bias trimpot. This
trimmer is in charge of feeding the BBD MN3007. You don’t need to be
extremely precise with this one, just till you hear the flanging effect and the
- Adjust the Clock Trim pot. As we said before, this trimmer is pretty sensitive.
Set it up to the point where you achieve a wide sweep with minimum noise.
If the flange starts to whine or “chirp” at the extremes of its sweep you will
need to do a little more adjustment.
- Go back and tweak the Bias trim pot further clockwise until you get smooth
up and down flange without distortion.
- With T1, we can control the maximum of Feedback desired, as this trimmer
acts as a limiter to the maximum allowed. Set Feedback at max, fully
clockwise, then start adjusting T1 as you get the maximum desired
- Once we have almost everything set-up, use your ears to make the final
adjustments on the trimmers while testing the limits of Rate, Range, and
The most important thing to set up here is the Clock Trimmer; it will help you to avoid
unwanted noises at the extremes of the flanging when you set Range, Feedback and Rate
Most of the adjustment occurs during the first quarter of the trimmer, take your time with
the set-up and you will definitely hear a big difference on it.
The Electric lover has been designed with an optional effect loop. You could wire it just by
adding two mono Jacks to the pads Rtrn and Snd .
This loop works in parallel with the delay line and allows you to experiment with crazy and
unusual sounds by plugging some other effect.
Feel free to experiment with as many modulations units you want to, Phasers, delays,
chorus, or even some other external flangers, in order to achieve your unique tone
For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum
IC VOLTAGE measured on a 9.4v source