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.
I M P E D A N C E
AudioGraph – The PowerCube
| MODEL BEING | VOLTAGE FROM | x2 = STEREO |
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| TESTED |
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| BATTERY | MONO = BRIDGED MONO |
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Amplifier: PUNCH AMP 14.4V x 2 | Rated Power : Rated Output - Watts per Channel | |||||||
Serial No: |
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Owner | : ROCKFORD CORPORATION |
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8Ω | 84 | W |
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84 | W |
| POWER |
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| 50V |
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0° | 83 | W |
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30° |
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| IN |
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84 | W | {WATTS |
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60° | 85 | W |
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| A |
4Ω | 159 | W |
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| 30V | T |
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| L | ||||
154 | W |
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| O | |
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0° | 153 | W |
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30° | 154 | W |
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| P U | |||
60° | 158 | W |
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| 10V | |
2Ω | 266 | W |
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| O U | |||
251 | W |
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| 8Ω | ||
0° | 245 | W |
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| 4Ω |
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30° | 248 | W |
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60° | 261 | W |
| 0° |
| 2Ω |
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1Ω | 378 | W |
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| 1Ω | { |
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| (Ind) +60° |
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343 | W |
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| Impedance |
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0° | 333 | W |
| PHASE{ANGLES |
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30° | 339 | W |
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60° | 373 | W |
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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!
