Dave Hill Designs Europe 1 Reference Measurements
SIGNAL LEVEL | HARM 2 | HARM 3 | SPEED = 0 | SPEED = 1 | HARM 2 GAIN | HARM 3 GAIN |
+24 dBu | 17.3 % | 19.7 % | 15.5 % | 21.9 % | -0.7 dB | -0.7 dB |
+14 dBu | 7.6 % | 3.5 % | 16 % | 14.2 % | 0.9 dB | 2.9 dB |
+4 dBu | 2.8 % | 0.6 % | 1.3 % | .05 % | 1.3 dB | 3.6 dB |
-6 dBu | 0.9 % | 0.2% | .04 % | .03 % | 1.3 dB | 3.6 dB |
Gain change is referenced to having the color function off, it shows some compression with both the even and odd harmonic controls
All distortion wave measurements use a very low distortion sine wave as the source
They are analog measurements.
The top wave shape is a vocal recoding. The bottom is the same slowed down by the speed control; this is an extreme case to show the effect on the wave shape
EVEN HARMONIC DISTORTION WITH LEVEL:
ODD HARMONIC DISTORTION WITH LEVEL:
FREQUENCY RESPONSE OF WITH THE SPEED CONTROL SET TO 1
NOTE: LOW LEVEL SIGNALS HAVE A NEAR FLAT RESPONSE
HIGH LEVEL SIGNALS ARE CHANGED: