7040A Operating Manual Genelec 7040A Active Subwoofer
Genelec 7040A Active Subwoofer Introduction Congratulation and thank you for choosing Genelec! Since 1978, Genelec has been guided by a single idea – to make perfect active monitors that deliver neutral and accurate sound in every kind of acoustical environment. In Genelec’s quest for this ultimate goal, our unrivalled commitment to research and development has led us to continuously develop innovative driver technology, electronic circuitry, enclosure designs and many more.
www.genelec.com MADE IN FINLAND 7040A ACTIVE SUBWOOFER SIGNAL INPUT CONNECTORS SERIAL NUMBER MAGNETICALLY SHIELDED ROLL-OFF +3 0 -3 -4 +6 +12 LEFT IN RIGHT IN SIGNAL OUTPUT CONNECTORS LEFT OUT RIGHT OUT -4 dB -2 dB BASS ROLL-OFF PHASE AND ISS DISABLE SWITCHES -270° -90° -180° ISS-DISABLE ON -6 dBu POWER SENSITIVITY FOR 100 dB SPL @ 1m MAINS INPUT MAINS INPUT 50 / 60 Hz 70 W 100 - 240 V~ POWER SWITCH Figure 1. 7040A's amplifier panel, connectors and controls. panel.
Phase Difference: 90° Phase Difference: 0° 85 Hz Subwoofer placement Bass Roll-Off setting Near to a wall -2 dB In a corner -6 dB Flush mounted -2 dB Table 1. Suggested Bass Roll-Off settings 85 Hz Phase Difference: 270° Phase Difference: 180° 85 Hz 85 Hz Figure 4. The effect of phase difference between the subwoofer and the main loudspeakers result in improved flatness.
Setting the Bass Roll-Off The acoustic response of the subwoofer can compensate the room characteristics. To adjust the subwoofer use the ''Bass Roll-Off' switches located on the connector panel. These offer attenuation levels of -2, -4, and -6 dB at the lowest subwoofer output frequencies. Table 1 provides suggestions for Bass Roll-Off switch settings. Flat anechoic response is obtained when both roll-off switches are set to "OFF".
7040A Operating Manual SYSTEM SPECIFICATIONS AMPLIFIER SECTION 7040A 7040A Free field frequency response (-6 dB) 30...90 Hz ± 3 dB (33...85 Hz) Amplifier short term output power (Long term output power is limited by driver unit protection circuitry) 50 W Accuracy of frequency response Maximum short term sine wave SPL output averaged from 40 to 85 Hz, measured in half space at 1 meter 100 dB Amplifier system THD at nominal output ≤ 0.
