DynaudioメーカーBX30の使用説明書/サービス説明書
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BX30 subwoofer Owner’s Manual - and Safe ty Instruc tions Pre liminar y V ersio n 9902 09 455 490 A.
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 .
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.
CONTENTS S AFETY ................................................................................................................................................ 3 Installatio n .........................................................................
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.
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 .
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.
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 .
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.
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.
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.
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 10.
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.
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 dB.
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 In.
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