6.2 Caution for Speaker Connection
The output capacity of MAC 2.2/2.3/2.4 stereo power amplifier is very high, be sure to use a speaker system that has sufficient input capacity. If the input capacity of your speaker system is lower than the rated output of the MAC 2.2/ 2.3/2.4 stereo power amplifier, you can protect your speakers by connecting a fuse serially between the speaker and the amplifier as shown below.
(+)
Output
Fuse
+Speaker - System
ON
CH1
CH2
OFF
POWER
Use the following formula to determine the fuse capacity according to the speaker's input capacity.
Po=I2 R 
I=
Po/R
Po[W] : Speaker's continuous input capacity (noise or RMS)
R[ 
] : Speaker's nominal impedance
I[A] : Required fuse capacity
As to the speaker cable, if you use a long one, use as thick a cable as possible to prevent deterioration of the damping factor or power loss inside the cable.
7.TECHNICAL SPECIFICATIONS
7.1Specifications
POWER SPECIFICATIONS |
| MAC 2.2 |
| MAC 2.3 | MAC 2.4 | ||
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STEREO MODE |
| 2 Ohms | 480 |
| 800 |
| 1400 |
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(Both channels driven) |
| 4 Ohms | 300 |
| 450 |
| 750 |
20Hz~20KHz |
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| 8 Ohms | 205 |
| 310 |
| 575 | |
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Bridge Mono Mode |
| 8 Ohms | 560 |
| 900 |
| 1500 |
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20Hz~20kHz |
| 4 Ohms | 800 |
| 1400 |
| 2500 |
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ELECTRICAL SPECIFICATIONS |
| 600W |
| 900W |
| 1500W | |
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INPUT SENSITIVITY |
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| 1.15V(+3.4dBu) | 1.15V(+3.4dBu) |
| 1.15V(+3.4dBu) | |
INPUT IMPEDANCE |
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| 10K Unbalanced | 20K | Balanced |
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FREQUENCY RESPONSE |
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| 25Hz~25KHz |
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(at 10dB below rated output power) |
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VOLTAGE GAIN |
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| 30dB |
| 32dB |
| 34dB |
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| <0.03% |
| <0.03% |
| <0.03% | |
S/N ratio |
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| 100dB |
| 100dB |
| 100dB |
GENERAL SPECIFICATIONS |
| 600W |
| 900W |
| 1500W | |
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| Full short circuit, open circuit, thermal, ultrasonic, and RF protection stable into reactive | ||||
PROTECTIONS |
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| or mismatched loads, turn ON/OFF, muting, tried crowbar. |
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| Front: AC switch |
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CONTROLS |
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| Rear: stereo/ parallel/ bridged selector, 30Hz filter selector clip ON/OFF selector. | ||||
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INDICATORS |
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| SIGNAL: 2 green LED | CLIP: 2 red LED |
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| POWER: 1 Blue LED | PROTECTION: 1 red LED |
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CONNECTORS |
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| INPUT : Active balanced XLR and 1/4"(6.3mm)TRS |
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| OUTPUT: |
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POWER SUPPLY |
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| Available for |
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DIMENSIONS |
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| 483(W) 400(D) | 88.8(H)mm |
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WEIGHT |
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| 14.4kg |
| 16.54kg |
| 19.02kg |
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