Edge Activator HD Test Drive procedure

Thanks for purchasing or considering the new Edge Activator HD.  HD means High Definition and High Dynamic Range. This new unique pedal design is the result of a successful first design in 2011 plus user feedback and some inspiration to broaden the circuit to include range and texture from the Particle Beam overdrive pedal.

Until we get the new manual posted, we wanted to provide this guide to help you quickly understand and use the Edge Activator HD. There are interactions between the various knobs and switches, so for first time use this procedure will allow you to quickly understand the power and flexibility.

  1. Connect the bass or guitar to “IN”, connect the “OUT” to the amp input
  2. Set Vol knob to 12 o’clock, straight up.
  3. Power on your amp and adjust guitar volume knob to maximum
  4. Adjust the Vol to taste, or find the place where it’s unity gain (footswitch compares volume on/off)
  5. Turn the Blend knob fully clockwise, to the right (maximum effected signal)
  6. Turn the EQ knob fully clockwise, to the right (Boost of mid range)
  7. Turn The Range knob fully counter clockwise, to the left.  This allows the maximum range of excitation (from a lower frequency up through 20Khz)
  8. Adjust the Gain knob to taste, excitation is mild on the left zone, and moves toward distortion and overdrive as you rotate clockwise.
  9. Flip the toggle switch on the right from EQ-H (high) to EQ-L (low) and back. This changes the midrange center of the frequency band, whose volume (cut or boost) is controlled by the EQ knob.
  10. Rotate the Blend knob counter clockwise to add back some clean signal and adjust the Vol to compensate the overall output volume
  11. Now, rotate the EQ knob to the far counterclockwise position. This is the maximum Midrange cut. The right toggle changes the center frequency of that cut in the same way as it did for the boost.
  12. In the EQ at 12 o’clock position, there is no midrange boost or cut, but the other knobs function as usual.
  13. . ,

  14. If the Mid Range is boosted with EQ knob (clockwise), then you are likely to want the left toggle switch in the “Smooth” down position for more rounded sound.
  15. If you want to cut the Mid Range using the EQ Knob (counter clockwise, then you are likely to want the left toggle switch in the Crisp position.  This position allows all the highs to come through, including the excited or distorted high frequencies. This gives that Hi-Fi preamp sound for slap, pop, harmonics excitation (sometimes called studio bass sound).   You decide the combinations you prefer, there are no rules.
  16. If the Gain knob is also high (clockwise) you will get some hiss from the excitation of high frequencies and this is normal.  Turning the toggle to “smooth” will remove that hiss and the higher frequencies.
  17. The Higher the Gain knob setting, the more noticeable the rotation of the Range knob on the tone of the bass or guitar.
  18. The Blend knob is partial, it’s not 100% wet to 100% dry, because of the filtering done on the excited signal.  Realize that the Range knob filters which frequencies are sent through the Gain circuit for overdrive and excitation. The EQ knob adjusts only the wet side, the Blend brings back the unaffected signal. This gives you maximum control and allows the clean low end to be as present as you want.
  19. Rotating the Range knob clockwise, increases the frequency of the high pass filter to allow a smaller range (starting at a higher frequency) to be excited. As the knob gets further clockwise, the mids will be softer, and only very high frequencies will have harmonic excitation.

Some of the other names that used in the past are harmonic excitation and harmonic generation. The uniqueness comes not only from choices in components, frequencies but also from circuit path which allows the blends and filtering to be done smoothly, without much change in volume. The Vol knob alone should be the way to change the Volume, and this increases ease of use and speed of finding your favorite settings.  Personally I used two of these live, one EQ boost of mid range the toggle set “Smooth” the other with EQ cut for slap, and the toggle set “Crisp”.  They work fine independently, and when they are both on, they give a more complex sound with some additional overdrive.

What we have done is take studio techniques and the proper frequency selection for maximum impact bass sound, and placed it into an easy to use, versatile, and indestructible box for your convenience.  Now, if you want to travel light AND sound great, use that 4 pound Class D bass amp head, and bring your Edge Activator HD.   Now you will sound like you have huge (amp) transformers, tube preamps and great equalizer section.  And you have added less than ½ pound to your gear.   Convenience and power. It runs on a single 9v battery or a standard center negative adaptor, but we double the voltage to give 18 V of headroom which you really need for Bass.