3.Connect the loudspeakers to the CHANNEL A and CHANNEL B SPEAKER OUTPUTS (9, 11). THE TOTAL SPEAKER LOAD MUST BE AT LEAST 2 OHMS PER CHANNEL. If you try to operate at a lower impedance, the amplifier will go into PROTECTION MODE and stop operation until you correct the load conditions.
4.With the LEVEL CONTROLS (19, 20) of both channels set to zero (fully counterclockwise), turn the POWER SWITCH (12) ON. With the level controls of your MIXER or other INPUT device turned all the way DOWN, turn the amplifier level controls all the way up for desired loudness from your speakers. Note, when the CLIP LED (17) light, there is distortion present in the amplifier’s output section. If a CLIP LED (17) remains on or flashes repeatedly, reduce the signal level by lowering the input level control for the channel that is clipping or reduce the level at the source.
5.Now adjust your MIXER or other INPUT source to your desired listening level. You also have the choice of keeping the volume of both speakers equal, or for certain situations you can adjust the volume so one side will be louder than the other.
PARALLEL MONO OPERATION:
Follow these instructions for PARALLEL MONO operation using a single input cable, and you will have the same monophonic signal on both the CHANNEL A and the CHANNEL B outputs. Each channel’s output is controlled independently by that channel’s level control.
1.With the power off, set the OPERATION MODE SWITCH (8) to the PARALLEL MONO position. When the power is on, the MONO LED (14) on the front panel will light. If the LED does not illuminate, you have the switch in the wrong position. Correct before continuing.
2.With the power off, connect your input cables to the CHANNEL A input only using the either the XLR INPUT JACK (5) or 1/4" INPUT JACK (7) of CHANNEL A. The other CHANNEL A input can be used to link to an additional amplifier.
3.Connect the loudspeakers to the CHANNEL A and CHANNEL B SPEAKER OUTPUTS (9, 11). THE TOTAL SPEAKER LOAD MUST BE AT LEAST 2 OHMS PER CHANNEL. If you try to operate at a lower impedance, the amplifier will go into PROTECTION MODE and stop operation until you correct the load conditions.
4.With the LEVEL CONTROLS (19, 20) of both channels set to zero (fully counterclockwise), turn the POWER SWITCH (12) ON. With the level controls of your MIXER or other INPUT device turned all the way DOWN, turn the amplifier level controls all the way up for desired loudness from your speakers. Note, when the CLIP LED (17) light, there is distortion present in the amplifier’s output section. If a CLIP LED (17) remains on or flashes repeatedly, reduce the signal level by lowering the input level control for the channel that is clipping or reduce the level at the source.
5.Now adjust your MIXER or other INPUT source to your desired listening level. You also have the choice of keeping the volume of both speakers equal, or for certain situations you can adjust the volume so one side will be louder than the other.
MONO BRIDGE OPERATION:
Follow these instructions to bridge the unit’s outputs. Bridging the amplifier converts the unit to a monophonic or single channel. The amplifier can be used with 4Ohm or higher loads only in MONO BRIDGE mode. This mode is used to provide a higher voltage with greater headroom to your speaker. Before setting your amplifier for MONO BRIDGE operation, make sure that your speaker can handle the high power level provided by the amplifier in MONO BRIDGE mode.
CAUTION: VOLTAGE OVER 100 VOLTS MAY BE PRODUCED AT THE BRIDGE OUTPUT TERMINALS IN THIS MODE.
1.With the power off, set the OPERATION MODE SWITCH (8) to the BRIDGE position. When the power is on, the BRIDGE LED (15) on the front panel will light. If the LED does not illuminate, you have the switch in the wrong position. Correct before continuing.
2.With the power off, connect your input cables to CHANNEL A input only using either the XLR INPUT JACK (5) or 1/4" INPUT JACK (7) of CHANNEL A. The other CHANNEL A input can be used to link to an additional amplifier.
3.Connect the loudspeaker to the BRIDGE SPEAKER OUTPUT (10) only. The total speaker load must be at least 4 Ohms or above. If you try to operate at a lower impedance, the amplifier will go into PROTECTION MODE and stop operation until you correct the load conditions.
4.With the CHANNEL A LEVEL CONTROL (19) set to zero (fully counterclockwise), turn the POWER SWITCH (12) ON. With the level controls of your MIXER or other INPUT device turned all the way DOWN, turn the amplifier level controls all the way up for desired loudness from your speakers. Note, when the CLIP LED (17) light, there is distortion present in the amplifier’s output section. If a CLIP LED (17) remains on or flashes repeatedly, reduce the signal level by lowering the input level control for CHANNEL A or reduce the level at the source. During MONO BRIDGE operation, the CHANNEL B level is inactive, however, both channels LED will flash simultaneously and show output conditions.
5.Now adjust your MIXER or other INPUT source to your desired listening level. You also have the choice of keeping the volume of both speakers equal, or for certain situations you can adjust the volume so one side will be louder than the other.
USING THE SIGNAL GROUND LIFT SWITCH:
Depending on your system configuration, sometimes applying the ground will create a quieter signal path. Sometimes lifting the ground can eliminate ground loops and hum to create a quieter signal path.
1.With the power amp on, listen to the system in idle mode (no signal present) with the ground applied (the SIGNAL GROUND LIFT SWITCH (2) in the left position).
2.Then turn the power off before moving the SIGNAL GROUND LIFT SWITCH (2). Lift the ground by moving the SIGNAL GROUND LIFT SWITCH (2) to the right, turn the power back on and listen to determine which position will provide a signal devoid of background noise and hum. Keep the SIGNAL GROUND LIFT SWITCH (2) in the ground position if the noise level remains the same in either position.
CAUTION: DO NOT TERMINATE THE AC GROUND ON THE POWER AMPLIFIER IN ANY WAY. TERMINATION OF THE AC GROUND CAN BE HAZARDOUS.
SPECIFICATIONS:
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Output Power EIA: 1 kHz @ 1% THD | 340 | |
Single Channel 8Ω | 190 | |
Both Channels Driven 8Ω | 175 | 300 |
Single Channel 4Ω | 325 | 600 |
Both Channels Driven 4Ω | 275 | 500 |
Single Channel 2Ω | 470 | 950 |
Both Channels Driven 2Ω | 360 | 800 |
Mono Bridge 8Ω | 550 | 1000 |
Mono Bridge 4Ω | 750 | 1600 |
Dynamic Headroom: | 1.3 | 1.3 |
8Ω | ||
4Ω | 2.3 | 2.1 |
Frequency Response | 20 Hz - 20 kHz | |
Total Harmonic Distortion | less than 0.01% @ 1 kHz | |
Intermodulation Distortion | less than 0.02% (SMPTE) | |
Signal to Noise Ratio | 100 dB below rated power @ 8W | |
Damping Factor | greater than 500 @ 8W | |
Damping Factor | greater than 800 @ 8W | |
Slew Rate | 16 V/mS | |
Voltage Gain | 33 dB | |
Input Sensitivity (for rated power............................................................at 8 Ohm): | 1.1 VRMS | |
Input Impedance Unbalanced | 0.82 VRMS | |
| 10 kOhms | |
Input Impedance Balanced | 550 VA | 20 kOhms |
Power consumption: | 1000 VA | |
NOTE: POWER CONSUMPTION IS GIVEN AT RATED POWER AT 8 | ||
PER CHANNEL, BOTH CHANNELS DRIVEN. |
| |
AC Power Requirement: | ................... | 120V/ 60 Hz 230V/ 50 Hz |
(power connection is factory configured) | ||
Indicators: | 1 Power Indicator, 1 Signal LED per channel, | |
1 Clip LED per channel, 1 Protect LED per channel, 1 Mono LED, 1 Bridge LED
Cooling: | 2 Speed Dual Fan; | |
Protection:......Short Circuit, DC, Thermal | ||
Connectors: | 1/4" TRS Jack | |
Balanced/Unbalanced Inputs |
| |
Balanced Inputs | XLR Female Jack | |
Speaker Outputs | Speakons (CH.A, CH.B and bridge) | |
Dimensions | 19" x 13.75" x 3.5" (483 x 350 x 89 mm) | |
Weight” | 27 lbs | 34 lbs |
| ||
| 12.34 kg | 15.5 kg |
SPECIFICATIONS AND DESIGN ARE SUBJECT TO CHANGE
WITHOUT NOTICE FOR PURPOSE OF IMPROVEMENT.
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