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BX30 subwoofer
Owner’s Manual
- and Safety Instructions
Preliminary Version 990209
455 490 A
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EXPLANATION OF GRAPHIC SYMBOLS The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying t
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Important Safety Instructions Safety Read these instructions before any connection to the apparatus. Please keep these instructions in a convenient place. CAUTION To avoid electric shock, do not open the subwoofer. There are no user-serviceable parts inside. Installation If the BX30 have been stored for a longer period in an environment, where temperature was low or humidity high, we recommend that the BX30 is disconnected for at least three hours before use. Do not operate this apparatus near w
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CONTENTS SAFETY................................................................................................................................................ 3 Installation .................................................................................................................................................. 3 Power connection........................................................................................................................................ 3 Attachments .........
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BX30 Owner’s Manual BX30 Owner’s Manual Unpacking Every loudspeaker leaving DYNAUDIO ACOUSTICS A/S has been carefully and thoroughly inspected and tested. When unpacking the subwoofer, be sure to check if any physical damage has occurred to the subwoofer due to shipping. In case of damage, please contact the selling dealer immediately. When unpacking the subwoofer, verify that the voltage switch is positioned according to area voltage requirements. Intro The BX30 is a sophisticated and versatile
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BX30 Owner’s Manual Inlet section Figure 2. AC inlet AC inlet This is a grounding-type plug. Do not connect to a convenient AC outlet on a sound system or non-grounding AC outlet. Power switch 0: 1: There is voltage on the amplifier. The Protection LED lights up, red. Voltage switch 115/230: The amplifier’s power supply can be used with various voltages, 115/230 V ~, and frequencies, 50/60 Hz. The voltage selector switch on the back panel of the subwoofer shall be positioned according to the req
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BX30 Owner’s Manual Operating panels Figure 3. Subwoofer control panel LED Limiter: Lights up when the limiter circuits start protecting the woofer. The limiter does not affect the signals on the XLR OUT. Detect: When the input signal is above – 20 dB it lights green. If the line signal increases to 0 dB it turns red. The protection circuit also measures signal levels inside the subwoofer amplifier. If the level calibration is turned clockwise and the signal in one of the measuring point surpass
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BX30 Owner’s Manual Figure 4. Output control and connectors CROSSOVER High Pass: Changes round the OUT line signals between : Direct IN OUT : The signal on XLR connectors is directed to the XLR . 95 Hz: The signal on XLR IN runs through a 95 Hz high pass filter, before it is OUT send to the XLR . IN L and R : Balanced line signal input. Pin 1 : Ground Pin 2 : Non inverted (hot) Pin 3 : Inverted (cold) OUT L and R: Balanced line signal output. Pin 1 : Ground Pin 2 : Non inverted (hot) Pin 3 : In
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BX30 Owner’s Manual BX30 Placement Single Unit (Stereo) The correct location and phase alignment of the BX30 is essential to achieve accurate performance with any given system. The best results are usually achieved with the BX30 floor standing and at the same distance from the listening position as the main speakers. The unit should be placed at the centre point of a line between the main speakers if used as part of a stereo system. The polarity and phase can be adjusted so that there is the max
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BX30 Owner’s Manual 1 Figure 5. Shows the standard / octave response in active bass 3 extension mode with the crossover pre set to 95 Hz. The response offers a seamless match to any high quality monitor system but it is particularly well suited to smaller models with limited bass output capability. Figure 6. The flexibility of switching low pass and match high pass x-overs means the BX30 can be matched to any system with ease and accuracy. Figure 7. The impulse response of the BX30 is almost per
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BX30 Owner’s Manual 5.1 Systems Dolby AC3 format. The specification for each channel is strictly defined and the BX30 conforms carefully and accurately to that standard. The agreed sound level capability for the sub bass channel in film theatres is 115 dB in any one-octave band, in any seat. The BX30 can deliver this output with clean, undistorted power, which is equally suited to small rooms, or in multiple (modular) formats in much larger spaces. Our design chart gives SPL predictions for diff
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BX30 Owner’s Manual Sound Calculator ONE BX30 AT VARYING DISTANCE D FOR 100WRMS POWER Freq. L W H Lw(1W) Lw(Rqd) EPR Q D S V a T60 Lp calc 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 10 5 100 120 100 2 4,0 700 1000 0,4 0,50 103 3,21 63 20 10 5 100 120 100 2 8,0 700 1000 0,4 0,50 101 3,21 63 20 10 5 100 120 100 2 12,0 700 1000 0,4 0,50 100 3,21 63 20 10 5 100 120 10
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BX30 Owner’s Manual BX30 Technical description System topology The BX30 is fully active with a sophisticated signal management system. The following features are provided as standard. Dual inputs and outputs fully balanced with automatic bypass in the event of power loss. The outputs are buffered and th filtered with a 24 dB/ octave high pass network which forms a perfect 24 order crossover (Linkwitz-Riley) when the BX30 is set at 95 Hz Low Pass mode. A direct through switch is also provided for
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BX30 Owner’s Manual Flow diagrams IN XLR Input relay Passiv limiter Line receiver High pass 95 Hz Line driver Output relay Output switch OUT XLR L+ L+ 24 dB/oct Left Left Left Left L- L- b b R+ R- 24 dB/oct Right Right Right Right R- R+ b b Buffer Low pass 24 dB/oct Fix level 80 Hz Left +4 dBm -10 dBm Temperature Mute Level sensor d 24 dB/oct 95 Hz h a 60° f e 24 dB/oct 120 Hz Right = also adjustable with a tool Limiter c Equalizer Subsonic Phase 0°-180° Phase +180° Power Amplifier Speaker relay
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BX30 Owner’s Manual Box data Power Amplifier : collector coupled quasi 140 W complementary BJT Phase Shift : 20-150 Hz, variable 0-180 ° Frequency Response : +/- 3 dB 17-80/95/120 Hz Internal cabinet volume : inner 76 litres Bass Principle : reflex Weight : net 29,9 kg Dimensions : w × h × d 41 × 619 × 547 Mm Crossover : Linkwitz-Riley input crossover frequencies 80, 95, 120 Hz crossover slope 12 dB/Oct output crossover frequencies 95 Hz crossover slope 12 dB/Oct Connections : input XLR female
