Studer A1 Operating Instructions Manual
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Studer A1 Operating Instructions Manual

Studer A1 Operating Instructions Manual

A series active monitor speakers
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Studer A Series
Active Monitor Speakers
Operating Instructions

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Summary of Contents for Studer A1

  • Page 1 Studer A Series Active Monitor Speakers Operating Instructions...
  • Page 2 Copyright by Studer Professional Audio AG Studer Professional Audio AG Printed in Switzerland Technical Documentation Order no. 10.27.4551 (Ed. 0300) Althardstrasse 30 CH-8105 Regensdorf – Switzerland http://www.studer.ch Subject to change Studer is a registered trade mark of Studer Professional Audio AG, Regensdorf...
  • Page 3 SAFETY / SECURITE / SICHERHEIT To reduce the risk of electric shock, do not remove covers (or back). No user-serviceable parts inside. Refer servicing to quali- fied service personnel. Afin de prévenir un choc électrique, ne pas enlever les couvercles (où...
  • Page 4 SAFETY / SECURITE / SICHERHEIT FIRST AID PREMIERS SECOURS ERSTE HILFE (in case of electric shock) (en cas d'électrocution) (bei Stromunfällen) 1. Separate the person as quickly 1. Si la personne est dans l'impos- 1. Bei einem Stromunfall die be- as possible from the electric sibilité...
  • Page 5 SICHERHEIT / SAFETY Installation Installation Vor der Installation des Gerätes müssen die hier aufge- Before you install the equipment, please read and adhe- führten und auch die weiter in dieser Anleitung mit re to the following recommendations and all sections of bezeichneten Hinweise gelesen und während der these instructions marked with Installation und des Betriebes beachtet werden.
  • Page 6 SICHERHEIT / SAFETY Zugentlastung für den Netzanschluss Mains connector strain relief Zum Verankern von Steckverbindungen ohne mechani- For anchoring connectors without a mechanical lock sche Verriegelung (z.B. IEC-Kaltgerätedosen) empfeh- (e.g. IEC mains connectors), we recommend the fol- len wir die folgende Anordnung: lowing arrangement: Procedure: The cable clamp shipped with your unit is Vorgehen: Der mitgelieferte Kabelhalter ist selbstkle-...
  • Page 7 Umgebungstemperatur Ambient temperature Geräte und Systeme von Studer sind allgemein für einen Um- Units and systems by Studer are generally designed for an am- gebungstemperaturbereich (d.h. Temperatur der eintretenden bient temperature range (i.e. temperature of the incoming air) of Kühlluft) von +5...+40 °C ausgelegt. Bei Installation in einem +5...+40 °C.
  • Page 8 UMGEBUNGSBEDINGUNGEN / AMBIENT CONDITIONS Vor der Inbetriebnahme muss das System auf allfällige interne Before putting into operation, the system must be checked for Betauung oder Eisbildung überprüft werden. Nur bei sehr internal formation of condensation or ice. Only with a minute leichter Eisbildung kann mit direkter Verdunstung (Sublimati- formation of ice, direct evaporation (sublimation) may be ex- on) gerechnet werden;...
  • Page 9 WARTUNG / MAINTENANCE Wartung und Reparatur Maintenance and Repair Durch Entfernen von Gehäuseteilen, Abschirmungen The removal of housing parts, shields, etc. exposes etc. werden stromführende Teile freigelegt. Deshalb energized parts. For this reason the following precauti- müssen u.a. die folgenden Grundsätze beachtet werden: ons should be observed: Eingriffe in das Gerät dürfen nur von Fachpersonal Maintenance should only be performed by trained per-...
  • Page 10 WARTUNG / MAINTENANCE Elektrostatische Entladung (ESD) Electrostatic Discharge (ESD) bei Wartung und Reparatur during Maintenance and Repair Observe precautions for handling devices sensitive to ATTENTION: electrostatic discharge! ATTENTION: Respecter les précautions d’usage concernant la mani- pulation de composants sensibles à l’électricité statique! ACHTUNG: Vorsichtsmassnahmen bei Handhabung elektrostatisch entladungsgefährdeter Bauelemente beachten!
  • Page 11 Lötverbindungen in der Abbildung weiter unten. Bei Studer werden keine handelsüblichen SMD-Teile Studer does not keep any commercially available SMDs bewirtschaftet. Für Reparaturen sind die notwendigen in stock. For repair the corresponding devices should be Bauteile lokal zu beschaffen.

  • Page 12: Electromagnetic Compatibility

    EMV / EMC Störstrahlung und Störfestigkeit Electromagnetic Compatibility Das Gerät entspricht den Schutzanforderungen auf dem The equipment conforms to the protection requirements Gebiet elektromagnetischer Phänomene, wie u.a. in den relevant to electromagnetic phenomena that are listed in Richtlinien 89/336/EWG und FCC, Part 15, aufgeführt: the guidelines 89/336/EC and FCC, part 15.

  • Page 13: Ce Declaration Of Conformity

    CH-1400 Yverdon CH-1400 Yverdon erklärt in eigener Verantwortung, dass die Produkte declares under his sole responsibility that the products Studer A1, Active Studio Monitor, Studer A1, Active Studio Monitor, (ab Serie-Nr. 190916), (on from serial No. 190916), Studer A3, Active Studio Monitor, Studer A3, Active Studio Monitor, (ab Serie-Nr.

  • Page 14: Table Of Contents

    A Series Active Monitor Speakers CONTENTS Welcome!...........................E1/1 Basics ................................E1/1 Safety and Connections..........................E1/3 1.2.1 Utilization for the Purpose Intended ......................E1/3 1.2.2 Unpacking and Inspection ........................E1/3 1.2.3 Installation............................... E1/3 General ............................E2/1 Scope of Delivery ............................E2/1 Options................................E2/1 Block Diagrams .............................E2/2 Technical Specifications ..........................E2/3 Operation ..........................E3/1 Connectors, Controls .............................E3/1 Service Information ........................E4/1...

  • Page 15: Welcome

    A Series Active Monitor Speakers WELCOME! We are happy to welcome you in the circle of the users of Studer's A series active speakers, and we felicitate you on your selection. Thanks to Studer's experience collected during more than 40 years of business in the profes- sional audio products field, you may expect that the performance of your new unit will fulfill your highest demands.
  • Page 16 In the Studer A series active speakers, these differences in the transit time of the audio signals are compensated by analog delay circuits maintaining the necessary delay up to frequencies above the audio range.

  • Page 17: Safety And Connections

    A Series Active Monitor Speakers Safety and Connections 1.2.1 Utilization for the Purpose Intended The Studer A series active speakers are designed for professional use. It is presumed that the units are operated only by trained personnel; servicing must be performed by qualified experts.
  • Page 18 ROLL OFF control. On the A1 unit the ROLL OFF control is not available, because this type and size of loudspeaker usually is not operated near room boundaries. E1/4 Welcome!

  • Page 19: General

    A Series Active Monitor Speakers GENERAL Scope of Delivery The Studer A series active speakers are shipped with an operating manual (order no. 10.27.4551), and either an IEC 320/C13 socket or an IEC mains cable, depending on your country. Options Order No.

  • Page 20: Block Diagrams

    TEMP. 115/230 V ±44 V ±17 V SENS. Σ LIMIT MAINS EMI LP ON/OFF FUSE MAINS RECT. REG. POWER TRANSF. Studer A1 FEED- BACK INPUT LIM. LEVEL INPUT FEED- BACK τ Σ 115/230 V ±38 V ±17 V POWER MAINS...

  • Page 21: Technical Specifications

    A Series Active Monitor Speakers Technical Specifications (preliminary, subject to change without notice) Input transformer-balanced electronically balanced Input impedance balanced, 5 kΩ balanced, 5 kΩ balanced, 12 kΩ Input sensitivity for 100 dB SPL @ 1 m 0.775 V Signal-to-noise ratio –100 dBA Max.

  • Page 22: Operation

    A Series Active Monitor Speakers OPERATION Connectors, controls INPUT: 1 = INPUT: 1 = CHASSIS CHASSIS 2 = + IN PHASE 2 = + IN PHASE 3 = – OPPOSITE PHASE 3 = – OPPOSITE PHASE SENS.: 775 mV = 100 dB SENS.: 775 mV = 100 dB (CAL.
  • Page 23 A Series Active Monitor Speakers INPUT: 1 = CHASSIS 2 = + IN PHASE 3 = – OP. PHASE SENS.: 775 mV = 100 dB (CAL. POSITION OF LEVEL CONTROL) ROLL OFF ROLL OFF LEVEL LEVEL ∞ ∞ ∞ ∞ ∞...
  • Page 24 Potentiometer for matching the input sensitivity to your standard line level. Note: For the A1, this control is located on the front panel. [5] ROLL OFF (A3 and A5 only) Continuously adjustable bass cut filter, allows attenuation of the low fre- quencies in order to compensate for boundary reflections when the unit is mounted close to one (approx.
  • Page 25 [7] Pilot LEDs All A Series speakers feature a green Power On LED. The A1 speaker is overload-protected by a limiter function without LED indicator. On the A3 and A5 speakers, the red Alarm LED on the front panel indi-...

  • Page 26: Service Information

    A Series Active Monitor Speakers SERVICE INFORMATION Detailed service instructions can be found in the Operating and Service Instructions manual which is separately available (order no. 10.27.4540). General Important! Repair work may only be performed by a trained service technician. The primary fuse must be replaced by a spare fuse of exactly the same type and rating.

This manual is also suitable for:

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