Behringer CX3400 manual

1 SUPER-X ® PRO CX3400 www.behringer.de Version 1.0 December 1999 Users Manual ENGLISH[...]

2 acc. to the Directives 89/336/EWG and 73/23/EWG We, BEHRINGER INTERNA TIONAL GmbH Hanns-Martin-Schleyer-Straße 4 D - 47877 Willich Name and address of the manufacturer or the introducer of the product on the market who is established in the EC herewith take the sole responsibility to confirm that the product: SUPER-X PRO CX3400 T ype designation[...]

3 This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure - voltage that may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. Read the manual. SAFETY INSTRUCTIONS CAU[...]

4 SUPERX ® PRO HIGH-PRECISION STEREO 2-WAY / 3-WAY / MONO 4-WAY CROSSOVER WITH LIMITERS MODEL CX 3400 s Professional high-precision stereo 2-way / 3-way / mono 4-way crossover s World-class performance 24 dB per octave Linkwitz-Riley filters s Absolutely flat summed amplitude response, zero phase difference s Individual output level controls fo[...]

5 FOREWORD Dear Customer, Welcome to the team of SUPER-XPRO users and thank you very much for expressing your confidence in BEHRINGER products by purchasing this crossover. It is one of my most pleasant tasks to write this letter to you, because it is the culmination of many months of hard work delivered by our engineering team to reach a very a[...]

6 T ABLE OF CONTENTS 1. INTRODUCTION ................................................................................................................. ..... 7 1.1 Multi-way speaker systems ................................................................................................... .......... 7 1.2 SUPER-X PRO: the high-end frequency crossove[...]

7 1 . INTRODUCTION Thank you very much for expressing your confidence in BEHRINGER products by purchasing the SUPER-X PRO CX3400. + This manual first describes the terminology used, so that you can fully understand the CX3400 and its functions. Please read the manual carefully and keep it for future reference. 1.1 Multi-way speaker systems Multi-wa[...]

8 2.1 Before you begin Your BEHRINGER SUPER-X PRO CX3400 was carefully packed in the factory and the packaging is designed to protect the unit from rough handling. Nevertheless, we recommend that you carefully examine the packaging and its contents for any signs of physical damage, which may have occurred during transit. + If the unit is damaged, p[...]

9 Fig. 2.2: Proper selection of the two MODE buttons for stereo 2-way operation Subsequently, the LEDs above the active controls on the front panel light up, signaling which controls are active in the operating mode you just selected. The functions of these controls can be seen from the second strip label. In stereo mode, both channels perform the [...]

10 Fig. 2.4: Active control element s on the rear panel of the SUPER-X PRO 1 Use the enclosed power cord to connect the unit to the mains. 2 FUSE HOLDER / VOLTAGE SELECTOR . Please make sure that your local voltage matches the voltage indicated on the unit, before you attempt to connect and operate the CX3400. Blown fuses may only be replaced by fu[...]

11 Fig. 2.6: Active control elements on the front panel of the SUPER-X PRO 1 and 16 INPUT control . This control adjusts the input gain from +12 to -12 dB. 2 LOW CUT button . This button activates the 25-Hz high-pass filter protecting the woofers against low- frequency signals. 3 LOW/MID XOVER FREQ . control. This control governs the crossover freq[...]

12 + Always switch off the entire system before you press this button, as it produces heavy interference noise that could damage your speakers and/or other equipment. 9 LOW SUM button . In stereo mode, the two Low paths can be summed with the LOW SUM button and routed to the Low output of channel 1, which is particularly useful in systems using add[...]

13 6 LOW OUTPUT control . Controls the output level of the Low band from +6 to -6 dB. 7 LOW PHASE INVERT button . This button reverses the polarity of the Low output. 8 LOW MUTE button . Mutes the Low band. 9 LOW-MID OUTPUT control . Controls the output level of the Low-Mid band from +6 to -6 dB. 10 LOW-MID PHASE INVERT button . This button reverse[...]

14 3. APPLICATION 3.1 Tools The following tools are indispensable for a perfect system alignment. You should by all means try to obtain the speaker specifications from the manufacturer, in order to operate the systems in their proper frequency and level ranges. Use the manufacturers documentation to adjust the operating mode and crossover freque[...]

15 3.3.1 Finding drop-outs in the frequency response Check the entire frequency response of the system. Rooms have quite an impact on the frequency response of speaker systems, due to resonance and various reflections. So, you cannot expect to achieve a linear frequency response right from the start. Use an equalizer such as our ULTRA-CURVE P[...]

16 3.5.2 Basics of electronic runtime correction It is important to know how the dimensions of time and space are connected with each other, e.g. by using a tape measure and a pocket calculator. Example: a delay of 2 ms corresponds to a distance of 68.6 cm; when you measure an offset of 30 cm you can calculate the necessary delay as follows: 2 ms x[...]

17 Modern systems often use bass reflex cabinets for their woofer or sub-woofer systems. Consequently, when stacking the cabinets, the drivers are usually aligned along the vertical axis of the speaker front, or can at least be aligned using the available control range of the SUPER-X PRO. Here, runtime correction follows the same principle as in mi[...]

18 The limiter threshold can be set from -6 dB to OFF and acts on all six limiters at the same time. Still, each limiter band works independently, with the LIM-LEDs lighting up as soon as the associated limiter is activated. + Please note that the limiters in the SUPER-X PRO are no hard ratio limiters, i.e. signal peaks can surpass the adjust[...]

19 4.2 Mains connection Before you connect your SUPER-X PRO to the mains, please make sure that your local voltage matches the voltage required by the unit! The fuse holder on the female mains connector has 3 triangular markers, with two of these triangles opposing each other. Your CX3400 is set to the operating voltage printed next to these marker[...]

20 Fig. 8.3: Different plug types 5. SPECIFICATIONS INPUT Connectors X L R T yp e Electronically servo-balanced, RF filtered Impedance Balanced >50k Ohms, unbalanced >25k Ohms Max. Input level +22 dBu typical, balanced or unbalanced CMRR >40 dB, typically >55 dB at 1 kHz OUTPUT Connectors X L R T yp e Electronically servo-balanced, RF f[...]

21 PERFORMANCE Bandwidth 20 Hz t o 2 0 kHz, +0/-0.5 dB Frequency Response <5 Hz to >90 kHz, +0/-3 dB Signal to Noise Ref.: +4 dBu, 20 Hz to 20 kHz, unweighted Stereo Mode: Mono Mode: Low Output >93 dBu >93 dBu Low-Mid Output >94 dBu Mid Output >95 dBu High-Mid Output >94 dBu High Output >90 dBu >88 dBu Dynamic Range >1[...]

22 The information contained in this manual is subject to change without notice. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording of any kind, for any purpose, without the express written permission of BEHRINGER GmbH. BEHRINGER and AUTOCOM are registe[...]