K&F SONA SUB II User Manual
Also see for SONA SUB II: Operating instructions
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Contents
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User's manual K&F SONA SUB IIKLING & FREITAG GMBH © 2014 Version 1.3 Page 9 of 194. Correct Ratio between Top and Bass SpeakersFor a balanced sound reproduction, suitable for speech and average music material, onesubwoofer SONA SUB II can be combined with up to 4 tops SONA 5. This is valid as long as theamplifiers for subwoofer and top skeakers have the same overall gain and the SONA SUB II ismounted on a wall or on the open floor (reference use).If more bass level is desired for DVD playback or reproducing very low-frequency signals (i.e.motor sounds), then the subwoofer can used with 2 SONA 6 speakers or 1 SONA 8 speaker.For this type of use, the subwoofer has to be used with filtering, since there is a risk ofmechanical otherwise. For maximum performance and operating safety, select use with theCD 44. For maximum performance and operating safety, select use with the CD 44.For an additional bass boost the level increase which occurs in room edges and room cornerscan be used. The placement in room edges and room corners is also beneficial because of theexcitation of more room modes which results in a more even bass coverage across the room.The correct loudness ratio between tops and bass is, therefore, very dependent upon thebass’s setup location, the spatial geometry, the required playback material and, last but notleast, your personal preferences. For this reason, the ratio between tops and bass shouldalways be assessed on site, for example with a third-octave band analyser or a notebook withcorresponding measurement software.4.1 Level increase because of adjacent areasAs shown in the following table, adjacent areas can lead to significant level differences.Setup Location Name Level increase PictogramFreely suspended Free field (fullspace) +/- 0 dBOn a surface(Reference use) Half space ca. +3 dB to +6 dBIn a spaceboundary Quarter space ca. +6 dB to +12dBIn a corner Eigth space ca. +9 dB to +18dB |
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