HA4400 POWERPLAY PRO User´s Manual Bedienungsanleitung Version 1.0 August 1998 www.behringer.
EG-Declaration of Conformity Spezielle Studiotechnik GmbH acc.
SAFETY INSTRUCTIONS CAUTION: To reduce the risk of electrical shock, do not remove the cover (or back). No user serviceable parts inside; refer servicing to qualified personnel. WARNING: To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture. 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.
POWERPLAY PRO Professional, multi-purpose headphone amplifier system for stage and studio applications HA4400 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 channel allows you to mix in any instrument or sound source s Output level control for each channel for your needs s Mono/stereo switch for each channel for more flex
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 ambitious goal: making an outstanding device better still. The POWERPLAY has for quite a long time been a standard tool used by numerous studios and P.A.
TABLE OF CONTENT 1. INTRODUCTION ...................................................................................................................... 7 2. THE DESIGN CONCEPT .......................................................................................................... 8 2.1 High quality components and design ............................................................................................... 8 2.2 Inputs and outputs ...................................................................
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 a reference unit for the sonic evaluation of the final mix as well as a distribution monitor amplifier for musicians in the studio.
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 hand for future reference. 2. THE DESIGN CONCEPT 2.
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 sufficient electrical contact to earth.
Unbalanced use of mono 1/4" jack plugs Balanced use of stereo 1/4" jack plugs Tip = Signal Tip = hot (+ve) Ring = cold (-ve) Sleeve = Ground / Shield Sleeve = Ground / Shield Tip Tip Sleeve Ring Sleeve Strain relief clamp Strain relief clamp For connection of balanced and unbalanced plugs, ring and sleeve have to be bridged at the stereo plug.
4.1 The front panel control elements E 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 inserted via the rear panel MAIN INPUT or DIRECT IN connectors.
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 MAINS CONNECTION. Use the enclosed power cord to connect the unit to the mains. Please also note the instructions given in the INSTALLATION chapter.
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.
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 INPUT connector is bypassed automatically. Fig. 5.3: Playback via the DIRECT IN connector 5.4 Using the mono function The MONO switch allows for mono operation, i.
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 impedance drop will not cause any damage, however, it can affect the quality of reproduction, in terms of long-term damage and distortion.
6. SPECIFICATIONS AUDIO INPUT MAIN input Connectors Type Impedance Max. input level CMRR AUX IN and DIRECT IN input Connectors Type Impedance Max. input level CMRR XLR and 1/4" jack RF filtered, servo balanced input 50 kOhms balanced, 25 kOhms unbalanced +21 dBu balanced and unbalanced (unity gain) typ. 40 dB, >55 dB @ 1 kHz 1/4" jack (tip = left, ring = right, sleeve = ground) unbalanced 25 kOhms unbalanced +21 dBu unbalanced (unity gain) typ.
7. WARRANTY § 1 WARRANTY CARD To be protected by this warranty, the buyer must complete and return the enclosed warranty card (signed/stamped by retail dealer) within 14 days of the date of purchase to BEHRINGER INTERNATIONAL (address see § 3). Failure to return the card in due time (date as per postmark) will void any extended warranty claims. ship. The warranty does not cover any such modification/adaptation, irrespective of whether it was carried out properly or not.
