Genelec 1094A and 1092A Active Subwoofer Systems Operating Manual
Genelec 1094A and 1092A Subwoofers General Description The Genelec 1094A and 1092A active subwoofers are powerful low frequency loudspeakers, incorporating all the amplifier and crossover electronics needed to combine them with other loudspeakers and amplifiers. B a la n c e d In p u ts Drivers The 1094A contains a single 385mm (15") long throw cone driver, housed in a 110 litre vented cabinet.
Subwoofer Positioning 5 2 The figure to the left shows some example subwoofer positions within a room. Unless mentioned otherwise, the vents of the subwoofer should face towards the nearest wall. 'Soffit' Mount 1 2 1 2&3 4 4 3 5 3 Recommended position. Recommended only when using two subwoofers. This arrangement may cause a loss in low frequencies if the distance from the listening position to the front wall is between 1 and 3m. The 'Soffit' or flush mount is also recommended.
Setting the Phase Control The effect of incorrect phase alignment between main monitors and subwoofer is a drop in the frequency response of the whole system at the crossover frequency. The graphs below (figure 3) show the effect of phase difference on the frequency response. The phase difference between the main monitors and subwoofer at the listening position is dependent upon the position of the subwoofer in the listening room.
System Connection The following diagrams show the various ways the subwoofer can easily be included into an existing system. All connections to the subwoofer should be of the balanced XLR type to minimise the noise immunity of the speaker system. If an unbalanced source has to be used then an RCA to XLR connection is required; the electrical connection diagram is shown in fig. 4. Subwoofer in two channel Stereo mode. Both left and right stereo channels are fed into the inputs of the subwoofer.
Figure 9. Subwoofer in an Analogue Matrix Surround Sound system Subwoofer in Analogue Matrix Surround Sound systems. When using a single subwoofer in an analogue matrix surround sound system, such as Dolby Surround or Dolby Pro-Logic, only the front three channels should be connected to the subwoofer inputs (see figure 9 above). All front channels that are used should be connected via the subwoofer so that the output of the subwoofer is matched to the rest of the system.
Two Subwoofers (stereo) in three channel LCR mode. To combine the subwoofers into the system so that one subwoofer produces the left and centre bass signals, whilst the other produces the right and centre bass signals, connect the system as shown to the left. Connection to the centre monitor can be made from either one of the subwoofer centre channels outputs. Note that as above the level sensitivity is 6dBu different from the single subwoofer system shown in figures 9 and 10. Figure 11.
SYSTEM SPECIFICATIONS 1094A 1092A Free field frequency response of system (± 2.5 dB): 29 - 80 Hz 33 - 80 Hz >120 dB SPL >115 dB SPL Maximum short term sine wave acoustic output in half space, averaged from 35 Hz to 85 Hz @ 1m: Self generated noise level in free field @ 1m on axis (A-weighted) < 10 dB Harmonic distortion at 100 dB SPL @ 1m on axis in half space (30...
