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Dynaudio BX30 manual

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Table of contents for the manual

  • Page 1

    BX30 subwoofer Owner’s Manual - and Safe ty Instruc tions Pre liminar y V ersio n 9902 09 455 490 A[...]

  • Page 2

    EXPLANATION O F GRAPHIC SYM BOLS The light ning flash with a rro whea d symb ol, wit hin an equilateral triangle, is intended to alert the user to the presence of un insulated “dangerou s voltage” w ithin the product’ s enclosure that may be of su fficient magnitude to constitute a risk of electric shock to persons . The exclamation point wit[...]

  • Page 3

    Important Safety Instructions Please follo w all instructions and heed all w arn ings Safety Read these instru ctions before any connection to the apparatus. Please keep these ins tructions in a convenient place. CAUTION To avoid electri c shock, do n ot open th e subwoofer. There are no user- serviceable parts ins ide. Installation If the BX30 h a[...]

  • Page 4

    CONTENTS S AFETY ................................................................................................................................................ 3 Installatio n ................................................................................................................... ............................... 3 Power c onnection.....[...]

  • Page 5

    BX30 Owner’s Manual 5 BX30 Owner’s Manual Unpacking Every loudspeaker leav ing DYNAUDIO ACOUSTICS A/S has been carefully an d thoroughly inspected and tes ted. When un packing the subw oofer, be sure t o check if any physical dam age has occurred to t he subwoof er due to shi pping. In case of dam age, please contact the selling dealer imm edia[...]

  • Page 6

    BX30 Owner’s Manual 6 Inlet section Figure 2. AC inlet AC inlet This is a grounding- type pl ug. Do not con nect to a conv enient AC ou tlet on a soun d system or non-g rounding AC outlet. Pow er switch 0: 1: There is voltage on the amplifier. The Protec tion LED lig hts up , red . Voltage sw itch 115/230: The am plifie r’s power su pply can be[...]

  • Page 7

    BX30 Owner’s Manual 7 Operating panels Figure 3. Subw oofer control panel LED Limiter: L ights up whe n the limiter circuits start protecting the woofer. The limiter does not affect the signals on the XLR OUT. Detect: When the input signal is abov e – 20 dB it lights green. If the line signal increases to 0 dB it tu rns red. The protection circ[...]

  • Page 8

    BX30 Owner’s Manual 8 Figure 4. Output control and connectors CROSSO VER High Pa ss: C hanges roun d the OUT lin e signals betw een : Direct : The signal on X LR IN conn ectors is directed to the XLR OUT . 95 Hz : The signal on XLR IN runs through a 95 Hz high pass filter, before it is send to the XLR OUT . IN L and R : Balanced line signal inp u[...]

  • Page 9

    BX30 Owner’s Manual 9 BX30 Plac ement Single Unit (Stereo) The correct location an d phase alignment of the BX30 is essential to ach ieve accurate performance with any given system. The best results are usually achieved with the BX30 f loor standing and at the s ame distance from the listening position as the main speakers. T he unit should be pl[...]

  • Page 10

    BX30 Owner’s Manual 10 Figure 5. Show s the st andard 1 / 3 octave r esponse in acti ve bass extension mode with the cros sover pre set to 95 Hz . The response offers a seamless match to any high qualit y monitor system but it is particularly well suited to smaller models with limited ba ss output capabilit y. Figure 6. The flexibility of switchi[...]

  • Page 11

    BX30 Owner’s Manual 11 5.1 System s Dolby AC3 format. The specification for each ch annel is strictly defined and th e BX30 conform s carefully and accurately to th at standard. The agreed sound lev el capability for the sub bass channel in film theatres is 115 dB in any one-octave ban d, in any seat. The BX30 can deliver this output with clean, [...]

  • Page 12

    BX30 Owner’s Manual 12 Sound Calculator ONE BX30 AT V ARYI NG DI S T ANCE D FO R 100W RM S P O W ER Freq. L W H Lw(1W ) Lw(Rqd) E P R Q D S V a T 60 Lp c al c Dc 63 20 10 5 100 120 100 2 1, 0 700 1000 0, 4 0, 50 112 3, 21 63 20 10 5 100 120 100 2 2, 0 700 1000 0, 4 0, 50 107 3, 21 63 20 10 5 100 120 100 2 3, 0 700 1000 0, 4 0, 50 104 3, 21 63 20 [...]

  • Page 13

    BX30 Owner’s Manual 13 BX30 Technical description System topology The BX30 is fu lly active with a sophisticated signal m anagement system. The following f eatures are provided as standard . Dual inpu ts and output s fully balanced w ith autom atic bypass in the ev ent of power los s. The outpu ts are buffered an d filtered with a 24 dB/ octave h[...]

  • Page 14

    BX30 Owner’s Manual 14 Flow diagrams Right 24 dB/oct 120 Hz Right a a b b Level Phase 0°-180° Line receiver Limiter Passiv limiter Input relay Power Amplifier Speaker relay Fix level +4 dBm -10 dBm Mute Phase +180° 24 dB/oct 10 Hz Subsonic Left Left 24 dB/oct 95 Hz 24 dB/oct 80 Hz Low pass Speaker Buffer L+ L- R+ R- b Left Line driver 24 dB/oc[...]

  • Page 15

    BX30 Owner’s Manual 15 Box data Pow er Am plif ie r : collector coupled quasi complementary BJT 140 W Phase Shift : 20-150 Hz, v ariable 0-180 ° Freq uency Re spo nse : +/- 3 dB 17-80/95/ 120 Hz Internal cabinet volum e : inner 76 litres Bass P rincipl e : reflex Wei ght : net 29,9 kg Dime nsio ns : w × h × d 41 × 619 × 547 Mm Crosso ver : L[...]