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Contents
F81 User Guide................................................................................................................................... 1
1 Thank you.................................................................................................................................. 3
2 Receiving and unpacking ............................................................................................................ 3
3 Handling .................................................................................................................................... 4
4 Introduction .............................................................................................................................. 4
4.1 Features........................................................................................................................................ 4
4.2 Specifications................................................................................................................................ 5
5 Safety first ................................................................................................................................. 6
5.1 Mechanical safety......................................................................................................................... 6
5.2 Electrical and fire safety ............................................................................................................... 6
5.3 Hearing safety............................................................................................................................... 7
6 Coverage ................................................................................................................................... 8
6.1 Vertical and horizontal responses ................................................................................................ 8
6.2 Placement..................................................................................................................................... 9
6.3 Wall mounting and yoke accessories ......................................................................................... 15
7 Connectors and pin-outs .......................................................................................................... 18
7.1 Phoenix connector option .......................................................................................................... 19
7.2 Speakon connector option ......................................................................................................... 19
7.3 Loudspeaker polarity .................................................................................................................. 20
8 Loudspeaker cables.................................................................................................................. 22
8.1 Recommended cable types and lengths..................................................................................... 22
8.2 F81 impedance ........................................................................................................................... 23
9 Amplifier considerations .......................................................................................................... 23
9.1 Recommended Funktion One power amplifiers ........................................................................ 23
9.2 Suitable power ranges................................................................................................................ 24
9.3 Simple system patches with external control ............................................................................. 25
9.4 XO series loudspeaker management patches ............................................................................. 28
10 Combining with bass systems ................................................................................................... 31
10.1 Bass to mid-high alignment ........................................................................................................ 35
11 Limiters ................................................................................................................................... 39
11.1 XO series limiters with 32dB amplifiers...................................................................................... 40
11.2 Limiter settings vs amplifier gain................................................................................................ 41
11.3 Limiter settings vs amplifier sensitivity ...................................................................................... 42
Appendix A - Clipping ....................................................................................................................... 44
Appendix B –Gain structure ............................................................................................................. 47
Appendix C –Maximum spl .............................................................................................................. 56
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