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Summary of Contents for Dynaudio BX30
- Page 1 BX30 subwoofer Owner’s Manual - and Safety Instructions Preliminary Version 990209 455 490 A...
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Page 2: Explanation Of Graphic Symbols
Copyright 1999 by DYNAUDIO ACOUSTICS A/S. All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, or otherwise whatsoever, without the prior written permission of DYNAUDIO ACOUSTICS A/S. -
Page 3: Important Safety Instructions
To avoid electric shock, do not open the subwoofer. 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. -
Page 4: Table Of Contents
... 3 AFETY Installation ... 3 Power connection... 3 Attachments ... 3 Servicing ... 3 Maintenance... 3 Sound pressure level ... 3 BX30 O ’ ... 5 WNER ANUAL Unpacking... 5 ... 5 NTRO ... 6 NLET SECTION ... 7... -
Page 5: Bx30 Owner' Manual
An electronic filter limits the response to 22 Hz in order to prevent large excursion by sub sonic signals and rumble. This filter can be removed when the BX30 is used for reference listening purposes. This is a factory modification, which must be ordered through an authorised agent. -
Page 6: Inlet Section
The main fuse for the subwoofer is located in the Fuse-drawer. Replace For continued protection against risk of fire, replace only with same type of fuse. 115 V: 230 V: BX30 Owner’s Manual Figure 2. AC inlet 8 A / 125 V Slow-blow 4 A / 250 V Slow-blow... -
Page 7: Operating Panels
Calibration: Changes the phase alignment IN versus subwoofer. Polarity: Invert the IN proportion subwoofer phase. CROSSOVER Low Pass: Changes the crossover frequency subwoofer itself. To fit the BX30 to your main speakers. BX30 Owner’s Manual Figure 3. Subwoofer control panel... - Page 8 Pin 2 : Non inverted (hot) Pin 3 : Inverted (cold) If CROSSOVER High Pass is set on 95 Hz and the BX30 is turned off, the relays in the amplifier will change and thereby the OUT signal will disappear.
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Page 9: Bx30 Placement
Large Active Systems The BX30 can be used as part of a large sound system to handle bass frequencies up to 120 Hz. The phase adjustment allows combination with any mid range device and the integrated signal and power management makes the BX30 suitable for club and sound system installations. - Page 10 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 perfect for a two octave, 100 Hz band pass filter.
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Page 11: 5.1 Systems
For example a single BX30 will produce 112 dB at 63 Hz at one metre, enough to match nearly all near-field monitors, while eight units can satisfy the requirement for THX theatres of 1000 cubic metres at a distance of 10 metres. -
Page 12: Sound Calculator
63 20 10 63 20 10 63 20 10 63 20 10 63 20 10 63 20 10 1 TO 8 BX30 UNITS WITH 1, 10 AND 100W AMP POWER EACH BX30 20 10 20 10 20 10 20 10... -
Page 13: Bx30 Technical Description
A relay offers instant protection of the driver in a condition of fault or overload. We believe the BX30 is the most advanced low frequency speaker system available. It can work alone or as part of a larger modular system. -
Page 14: Flow Diagrams
DC at amplifier Temperature > 60° Startup Input level right Input level left Bass level = also adjustable with a tool Limiter active BX30 Owner’s Manual Line receiver High pass 95 Hz Line driver 24 dB/oct Left Left 24 dB/oct... -
Page 15: Box Data
Bass Principle Weight Dimensions Crossover input output Connections Impedance Woofer Cabinet BX30 Owner’s Manual collector coupled quasi complementary BJT 20-150 Hz, variable +/- 3 dB inner reflex w × h × d 41 × 619 × 547 Mm Linkwitz-Riley crossover frequencies...
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