gauge speaker wire to connect the positive (red) and negative (black) speaker terminals to the similarly marked terminals on your power amplifier. Watch for an accidental polarity reversal . . . it happens! The result will be loss of low frequency response and center image.
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20/20bas BIAMPLIFIED SYSTEM CONNECTIONS AND OPERATION
Please refer to Figure 2.
1 INPUT SENSITIVITY This control has a 20dB range and compensates for different input signal levels. With the control at maximum, 1.1VRMS input will produce full amplifier output. If too much input signal is present, the amplifiers may overload, in which case the green LED at the front of the monitor will flash.
2INPUT CONNECTOR This jack has gold plated terminals and accepts both XLR and ¼" input plugs wired either balanced or
NOTE: Use only good quality input connectors having industry standard sleeve dimensions. Some consumer grade ¼" TRS plugs do not provide reliable connections because of slight dimensional differences.
3LOW FREQUENCY TRIM This controls the low frequency shelving boost/cut filter. The LF Trim filter has effect at frequencies below 400Hz and is fully engaged below 100Hz as shown on the rear panel response graphic. When the LF filter is set to “0”, the 20/20bas is designed to produce a flat LF response in the common “on the bridge or just behind the console” speaker mounting location. Locating the monitors
4HIGH FREQUENCY TRIM Use this calibrated control to vary the
20/20bas’ high frequency output above 2.6kHz by ±3dB to accommodate personal preferences.
5 POWER SWITCH 1 = ON 0 = OFF
When power is on, the green LED at the front of the speaker will illuminate.
3
20/20p SPECIFICATIONS
LF Driver: | 8" mineral filled polypropylene cone with 1½" diameter high | ||||
| temperature voice coil, damped rubber surround and magnetic | ||||
| shielding. |
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HF Driver: | 1" natural silk dome with ferrofluid voice coil coolant and | ||||
| magnetic shielding |
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Frequency Response: | 38Hz - 20kHz, ±2dB, Ref 500Hz | ||||
Crossover: | Passive second order |
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Acoustical Crossover: | 2.2kHz |
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Amplifier Power: | 100W per channel continuous | ||||
Input Connectors: | Combo XLR - ¼" TRS connectors with gold contacts accepts | ||||
Polarity: | balanced or unbalanced sources | ||||
Positive signal at + input produces outward cone displacement | |||||
Input Impedance: | 40k | Ω | balanced, 20k | Ω | unbalanced |
Input Sensitivity: |
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1.1V input produces full output with Input Level control at | |||||
Input Level Control Range: | maximum |
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20dB |
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LF Trim: | Continuously variable control calibrated in 1dB increments; | ||||
| Max boost/cut settings produces ±3dB @ 100Hz, | ||||
| ±2dB @ 400Hz |
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HF Trim: | Continuously variable control calibrated in 1dB increments; | ||||
| Max boost/cut settings produces ±3dB above 2.3kHz | ||||
Subsonic Filter: |
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Protection: | RF interference, output current limiting, over temperature, turn- | ||||
| on/off transient, subsonic filter, resettable mains breaker | ||||
Indicators: | Combination POWER ON / CLIP LED indicator | ||||
Power Requirements: | Factory programmed for either 120V~ 60Hz, | ||||
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| Power via detachable 3 circuit IEC type linecord | ||||
Cabinet: | 5/8" vinyl laminated | ||||
Dimensions: | 10¼" W x 14¾" H x 11¾" D | ||||
Weight: | 33 lbs. Powered Main Cabinet; | ||||
| 22 lbs. Passive 20/20 Satellite |