Behringer A4400 manuale d’uso

1 E User´s Manual Bedienungsanleitung D POWERPLAY PRO HA4400 Version 1.0 August 1998 www.behringer.de[...]

2 acc. to the Directives 89/336/EWG and 73/23/EWG We, BEHRINGER INTERNA TIONAL GmbH Hanns-Martin-Schleyer-Straße 36-38 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: POWERPLA Y PRO HA4400 Type desig[...]

3 E This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure - voltage that may be sufficient to con- stitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and mainte- nance instructions in the accompanying literature. Read the manual. SAFETY INSTRUCTIO[...]

4 HA4400 POWERPLAY PRO Professional, multi-purpose headphone amplifier system for stage and studio applications s Four totally independent stereo high-power amplifiers in 1 RU package s Highest sonic quality even with extremely high volume levels s Four independent input/aux sections provide up to four stereo mixes s Stereo aux input for each chann[...]

5 E FOREWORD Dear Customer, Welcome to the team of POWERPLAY PRO users and thank you very much for expressing your confidence in BEHRINGER products by purchasing this unit. 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 ambi[...]

6 T ABLE OF CONTENT 1. INTRODUCTION ................................................................................................................. ..... 7 2. THE DESIGN CONCEPT .......................................................................................................... 8 2.1 High quality components and design ......................[...]

7 E 1. INTRODUCTION In purchasing the new POWERPLAY PRO HA4400, you have acquired a headphone amplifier of the high-end class which meets all the demands and requirements of studio work. Due to its extensive functions and the new design the POWERPLAY PRO is an extremely efficient and universal headphone amplifier. It has been designed above all as [...]

8 WARNING! + It should be pointed out, that extreme output volumes may damage your ears and/or your headphone set. Turn down the LEVEL controls before you switch on the unit. + The following operational manual will introduce you to the BEHRINGER POWERPLAY PRO and its various functions. After reading the manual carefully, make sure it is always on h[...]

9 E 3. 3 Audio connections The MAIN inputs on the BEHRINGER POWERPLAY PRO are fully balanced. If possible, connect the unit to other devices in a balanced configuration to allow for maximum interference immunity. + Please ensure that only qualified persons install and operate the POWERPLAY PRO. During installation and operation the user must have s[...]

10 Unbalanced use of mono 1/4" jack plugs Ring Balanced use of stereo 1/4" jack plugs Balanced use with XLR connectors 1 2 3 2 1 3 Input Output Tip = Signal Tip = hot (+ve) Sleeve = Ground / Shield Sleeve = Ground / Shield Tip Ti p Sleeve Sleeve Strain relief clamp Strain relief clamp Ring = cold (-ve) For connection of balanced and unbal[...]

11 E 4.1 The front panel control elements Fig. 4.2: Controls on the front panel 1 The DIRECT IN stereo input is used to apply the signals coming from an external source. When using the DIRECT IN input, the MAIN signal applied on the rear panel is interrupted automatically (fig. 3.2). 2 The INPUT LEVEL control adjusts the level of the input signal i[...]

12 4.2 The elements of the rear control panel Fig. 4.3: The control elements of the rear panel 12 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 POWERPLAY PRO. Blown fuses may only be replaced by fuses of the same type and rating. 13 [...]

13 E Fig. 5.1: Example of a studio playback application 5.2.1 Using the amplifiers as independent power amplifiers In addition to the joint control of all channels via the MAIN input, each of the four power amplifiers can also be used independently. The AUX IN inputs in combination with the BALANCE controls serve this purpose. If the BALANCE contro[...]

14 5.3 Using the DIRECT IN input The DIRECT IN connector can be found on the left side of the front panel. For instance, it is often necessary to replay a song for the musicians in the studio via a cassette recorder. This can be done easily and rapidly using the DIRECT IN connector. When using this input, the signal applied to the rear panel MAIN I[...]

15 E 5.6 Connecting multiple headphones All of the four stereo amplifiers feature one front and one rear panel headphone output connector. Multiple headphones can be connected per channel, on condition that the resulting connection impedance does not fall below 100 Ohms. As the power amplifiers are resistant to temporary short circuits, an impedanc[...]

16 6. SPECIFICATIONS AUDIO INPUT MAIN input Connectors XLR and 1/4" jack T ype RF filtered, servo balanced input Impedance 50 kOhms balanced, 25 kOhms unbalanced Max. input level +21 dBu balanced and unbalanced (unity gain) CMRR typ. 40 dB, >55 dB @ 1 kHz AUX IN and DIRECT IN input Connectors 1/4" jack (tip = left, ring = right, sleeve[...]

17 E 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 is a registered trade[...]