Rockford Fosgate PUNCH 400.4 trans ana Operation & Installation page 42

Information Cubed
The data acquired in the testing procedure is then graphed in the form of
a 3-dimensional cube. Hence the name PowerCube.
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.
MODEL BEING
TESTED
Amplifier: PUNCH 200.
Serial No:
Owner : ROCKFORD CORPORATION
*
85 W
8 –60
–30 84 W
0 84 W
30 84 W
86 W
60
*
4 –60 162 W
–30 157 W
0 156 W
30 157 W
60 162 W
*
2 –60 273 W
258 W
–30
0 251 W
30 256 W
60 271 W
*
1 –60 390 W
–30 356 W
0 346 W
352 W
30
60 390 W
• Example of a 200.
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!
Audio Graph – The PowerCube™
VOLTAGE FROM x2 = STEREO
BATTERY MONO = BRIDGED MONO
14.4V x 2
2
{
POWER
IN
WATTS
–60 (Cap)
0
PHASE ANGLES
PowerCube
2
– 38 –
Rated Power : 100 W @ 4 Ohms
2
1
(Ind) +60
50V
30V
10V
8
4