Information Cubed
The data acquired in the testing procedure is then graphed in the form of a
The Phase Angle is expressed on the horizontal axis, the Output Voltage is presented on the vertical axis and the Impedance is displayed on the Z axis. Output Power, in watts, is listed on the left hand side for each impedance at each phase angle.
AudioGraph – The PowerCube™
|
| MODEL BEING | VOLTAGE FROM | x2 = STEREO |
|
| ||
|
| TESTED |
|
|
| |||
|
|
| BATTERY | MONO = BRIDGED MONO |
|
| ||
|
|
|
|
|
|
| ||
| Amplifier: PUNCH 200ix 14.4V x 2 | Rated Power : 100 W @ 4 Ohms | ||||||
| Serial No: |
|
|
|
|
|
| |
| Owner | : ROCKFORD CORPORATION |
|
|
| |||
| 8Ω | 84 | W |
|
|
|
|
|
| 84 | W |
| POWER |
|
|
| |
| 0° | 83 | W |
|
|
|
| |
|
| IN |
|
|
| |||
| 30° | 84 | W | { WATTS |
|
|
| |
E | 60° | 85 | W |
|
|
|
|
|
C | 4Ω | 159 | W |
|
|
|
|
|
N | 154 | W |
|
|
|
|
| |
A |
|
|
|
|
| |||
0° | 153 | W |
|
|
|
|
| |
D |
|
|
|
|
| |||
30° | 154 | W |
|
|
|
|
| |
P E |
|
|
|
|
| |||
60° | 158 | W |
|
|
|
|
| |
M | 2Ω | 266 | W |
|
|
|
|
|
I | 251 | W |
|
|
|
|
| |
|
|
|
|
|
| |||
| 0° | 245 | W |
|
|
|
| 4Ω |
| 30° | 248 | W |
|
|
|
| |
| 60° | 261 | W |
|
|
| 2Ω | |
| 1Ω | 378 | W |
|
| 0° | 1Ω | { |
| 343 | W |
|
| (Ind) +60° |
| ||
| 0° | 333 | W |
| PHASE{ANGLES |
| Impedance | |
| 30° | 339 | W |
|
|
|
|
|
| 60° | 373 | W |
|
|
|
|
|
•Example of a 200ix PowerCube
50V
30V
10V
8Ω
O U T P U T V O L T A G E
What is an Amplifier?
An amplifier by definition is a voltage generating device, recreating the signal which is input to it identically but with increased volume. It will be connected to a reactive load (the speaker). The impedance of this load and phase of the signal passing through the load will vary, dependent upon the frequency of the input signal (music).
Therefore, a perfect amplifier will be able to maintain the same output voltage regardless of load characteristics and will not alter the signal it is reproducing. A perfect amplifier when measured by the AudioGraph PowerCube would present data that forms a perfect cube. Unfortunately, amplifiers are not perfect. The laws of physics generally prevent it. A great amplifier is about the best one can hope to attain.
As you can see by the PowerCube and as you will experience by listening, your Punch amplifier is a GREAT AMPLIFIER!
– 35 –