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Content:

• Preface
• Frequency Responce
• Combfilter Effect
• Combfilter Effect with Feedback
• Noise
• LFO
• VCO
• Soundfiles

Preface

Please note when judging the frequency response that we are talking about guitar effects and not HiFi. The lowest natural frequency for electric guitars is 82 Hz for the open E string (36 Hz for a base dropped D). The highest frequency is 1175 Hz without harmonics for the e string 22nd fret. Higher frequencies are added by string harmonics and distortion harmonics by effects pedals, amplifiers and speakers. High frequencies are important as they will give the guitar sound its individual character. From 5 kHz on high frequencies are gradually muted by the speaker.

Here is the average frequency range of a distorted guitar playing cords and single notes:

The volume scale in the following diagrams is offset to 0 dB at an input of 400 mV (standard output of an unamplified electric guitar).

Frequency Responce

1977 Electric Mistress V2 frequency responce (average over varying delay times)

Electric Mistress V6 frequency responce (average over varying delay times)

Deluxe Electric Mistress V2 frequency responce (average over varying delay times)

Deluxe Electric Mistress V5 (Reissue) frequency responce (average over varying delay times)

Combfilter Effect

1977 Electric Mistress V2 comb filter effect at minimum feedback

Electric Mistress V6 comb filter effect at minimum feedback

Deluxe Electric Mistress V2 comb filter effect at minimum feedback

Deluxe Electric Mistress V5 (Reissue) comb filter effect at minimum feedback

Combfilter Effect with Feedback

1977 Electric Mistress V2 comb filter effect at maximum feedback

Electric Mistress V6 comb filter effect at maximum feedback

Deluxe Electric Mistress V2 comb filter effect at maximum feedback

Deluxe Electric Mistress V5 (Reissue) comb filter effect at maximum feedback

Noise

1977 Electric Mistress V2 noise

Electric Mistress V6 noise (to get the same level a booster had been used which may have added some noise)

Deluxe Electric Mistress V2 noise

Deluxe Electric Mistress V5 (Reissue) noise

LFO

The LFO voltage is measured at the wiper of the RANGE pot.

1977 Electric Mistress V2 LFO at slowest sweep. The frequency is 0.067 Hz or 4 sweep cycles per minute.

Electric Mistress V6 LFO. First 30 seconds at slowest sweep

Deluxe Electric Mistress V2. First 44 seconds at slowest sweep

Deluxe Electric Mistress V5 (Reissue) LFO at slowest sweep

VCO

The diagrams show the range in FILTER MATRIX mode. The LFO range may be different depending on LFO frequency. Especially the Deluxe Electric Mistress Reissue has a relativly narrow range in sweep modes compared to FILTER MATRIX.

1977 Electric Mistress V2 VCO

Electric Mistress V6 VCO

Deluxe Electric Mistress V2 VCO

Deluxe Electric Mistress V5 (Reissue) VCO

Soundfiles

I made a quick soundfile to compare the different versions. Therefore I used the reamping technique. I recorded the guitar with just a Big Muff PI. In a second pass I playbacked the recording through the different Mistresses and an amp simulation.

• No flanger
  (*.mp3 700 kB)
   
• 1977 Electric Mistress V2
  (RATE 10:00 o'clock, RANGE 10:00 o'clock, COLOR 10:00 o'clock) (*.mp3 700 kB)
   
• Electric Mistress V6
  (RATE 11:00 o'clock, RANGE 4:30 o'clock, COLOR 8:30 o'clock) (*.mp3 700 kB)
   
• Deluxe Electric Mistress V2
  (RATE 9:00 o'clock, RANGE 4:30 o'clock, COLOR 12:00 o'clock) (*.mp3 700 kB)
   
• Deluxe Electric Mistress V5 Reissue
  (RATE 7:30 o'clock, RANGE 4:30 o'clock, COLOR 9:00 o'clock) (*.mp3 700 kB)