7073A Operating Manual Genelec 7073A Active Subwoofer
7073A Active Subwoofer General description The low pass section sensitivity can be Installation Genelec 7073A is a powerful active adjusted from +6 dBu to -12 dBu to allow Each subwoofer is supplied with a mains subwoofer incorporating all the ampli- easy subwoofer level matching with vari- cable and an operating manual. Once fier and crossover electronics needed ous main speakers. All outputs have 0 dB unpacked, place the subwoofer in a suit- for bass management and reproduction passband gain.
Figure 2. XLR to RCA connector for unbalanced operation. Figure 1. 7073A's connector panel, connectors and controls. "master" subwoofer in a daisy-chained "L, C and R OUT" channels are high pass The placement will affect the phase dif- multiple subwoofer configuration. Note filtered with the filtering frquency fixed at ference between the main monitors and that the "subwoofer out" channel of an 85 Hz (12 dB/octave).
20 cm (8”) GENELEC GENELEC Subwoofer Bass Roll-Off placement setting Near to a wall -2 dB In a corner -6 dB Flush mounted -2 dB GENELEC GENELEC Table 1. Suggested Bass Roll-Off settings Figure 3. Flush mounting the subwoofer. Note the clearance needed on the reflex port side.
Finally, set the -180° phase switch (DIP 4) to the opposite setting and deactivate the test signal. Phase Difference: 90° Phase Difference: 0° 85 Hz Phase correction method with test equipment The following procedure matches the 85 Hz phase between the subwoofer and the main monitors using a frequency analyser and a pink noise generator.
tor system can be determined. With the or 19 to 120 Hz by using the "LFE BAND- Using the LFE +10 dB function bypass switch on, the high pass filters for WIDTH" switch. If the LFE signal includes In Dolby Digital and DTS encoding for- the main monitors are overridden and the higher frequencies than 120 Hz, they can mats the LFE channel has to be monitored system behaves as if the subwoofer was be monitored by using the "Redirect" with +10 dB gain in relation to the main not connected.
dB and four subwoofers 12 dB compared to a single subwoofer. Adjust the sensitivity control of all subwoofers in the group to match the SPL level of the main monitor system. Phase and Bass Roll-Off adjustments should be done individually for each subwoofer in the chain, especially if they are not placed close together. To check the phase alignment for the "master" subwoofer switch off the "slave" subwoofer and follow the instructions given in the previous sections.
7073A Operating Manual SYSTEM SPECIFICATIONS INPUT SECTION 7073A Free field frequency response (+/- 3 dB) 19 Hz…85 Hz LFE 85/120 Hz Maximum short term sine wave SPL output averaged from 30 to 85 Hz, measured in half space at 1 meter 124 dB SPL Maximum peak SPL output with random pink noise, measured in half space at 1 meter 129 dB SPL Self generated noise level in free field @ 1 m on axis (A-weighted) 20 dB Harmonic distortion at @ 1 m on axis in half space 2nd 3rd @ 105 dB SPL 30 … 85 Hz 2% 2%
