VI. LONG-TERM OUTPUT POWER
In a properly designed sound system, you can usually obtain the desired sound level without using the full output power of the amplifier; if the “CLIP” indicators flash once in a while, that is perfectly normal.
If the amplifier is operated at extremely high power levels, it may overheat or may even damage the speakers. The amount of stress on the amplifier depends largely on the load and how hard the amplifier drives it. In general, the lower the load impedance, the more stressful the load is.
8-Ohm Loads
The amplifier can operate at practically any power level without risk of overheating. However, if it is pushed hard enough to continually light the “CLIP” indicator, the amplifier’s average output power can reach 250 to 800 watts (depending on the model), which is more than many speakers can handle.
If the “CLIP” indicator flashes occasionally, the amplifier is approaching its maximum
Except for an occasional flash, keep the “CLIP” indicator dark to avoid overheating the amplifier channel.
AC CURRENT CONSUMPTION
A major objective in the design of the MXa Series
How is this possible? First, “normal conditions” in power amplifier rating means operation, using pink noise as a source, at an average power level equal to
When you plan the AC power hookups for your amplifi- ers, use Table 2 to predict the current requirements per amplifier. You can use the
Table 2: Current requirements, in amperes, at 120 VAC under various conditions (divide by 2 for
MODEL |
| Output | AC Current | AC Current | AC Current | AC Current |
Load | power | @ Full power | @ 1/3 power | @ 1/8 power | @ Idle | |
|
|
|
|
|
|
|
MX 1000a | 8+8 | 275 x 2 | 10 | 5.5 | 3 | 1 |
| 4+4 | 400 x 2 | 15 | 7.5 | 4 | 1 |
| 2+2 | 500 x 2 | 22 | 10 | 5 | 1 |
|
|
|
|
|
|
|
MX 1500a | 8+8 | 400 x 2 | 14 | 7 | 4 | 1 |
| 4+4 | 600 x 2 | 21 | 11 | 5.5 | 1 |
| 2+2 | 750 x 2 | 29 | 13 | 6.5 | 1 |
|
|
|
|
|
|
|
MX 2000a | 8+8 | 475 x 2 | 16 | 9.5 | 5 | 1 |
| 4+4 | 725 x 2 | 25 | 15 | 7.5 | 1 |
| 2+2 | 1000 x 2 | 38 | 21 | 11 | 1 |
|
|
|
|
|
|
|
MX 3000a | 8+8 | 850 x 2 | 25 | 16 | 9.5 | 1 |
| 4+4 | 1300 x 2 | 40 | 31 | 15 | 1 |
| 2+2 | 1600 x 2 | 58 | 42 | 20 | 1 |
|
|
|
|
|
|
|
11