Hafler SR2800CE, SR2300CE Installation, Cooling, POWER/THERMAL Requirements, Noise, AC Line

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Installation

The SR2300/2800 is a standard 2U (2 rack height) 19" rack-mount unit, with both front and rear rack mounting ears. In portable systems, the amplifier must be supported at both the front and rear.

!COOLING

The SR2300/2800 uses forced-air cooling (fan cooling) to remove the heat produced during normal operation. Free air flow at the mounting location is a critical factor in accomplishing long-term reliable operation of the amplifier. Maximumoperating ambient temperature is 40°. The internal fans of the amplifier pull in fresh (cool) air from the rear panel, and force the heated air out the front panel. This air flow must be as open and free of obstructions as possible. Also take care to exhaust the heated air away from the front panel intakes, so as not to recirculate and reheat the same air over and over again. In a rack system, make sure there is a significant source of fresh air to the rack. This can be achieved with air conditioning vents to the top of the rack, an open back that is well ventilated, or rack panel fans/vents. In the case of rack panel fans/vents, the cooling will be most effective when the amplifier(s) are located as far away from the fans/vents as pos- sible, to prevent air recirculation i.e. amplifiers at the bottom, fans/vents at top. Allow a minimum of 3” clearance in the front and back of the amplifier for adequate ventilation. When installing equipment in a rack, take care that the weight is distributed evenly. Hazardous conditions may be created by uneven weight distribution.

POWER/THERMAL REQUIREMENTS

For your convenience in planning for sufficient power and cooling in the amplifier environment, we have included AC mains current draw and thermal dissipation values in the Specifications Sheet. The specifications listed are for idle (no sig- nal), 1/8th power (“normal operating conditions” for continuous voice or music), and 1/3rd power (worst-case hard-clipped music) for an amplifier with both channels driven. The thermal dissipation specifications indicate how much heat will have to be removed from the amplifier environment under the three different conditions.

NOISE

The SR2300/2800 exceeds all relevant international emissions and immunity standards, and has further been specifically designed to minimize interference in Pro-Audio environments. Regardless of this fact, amplifiers consume, process and deliver significant amounts of power over a wide frequency range. Standard practice calls for caution to be exercised in the placement of signal cables and signal-level components such as mic preamps, tuners, etc., to avoid inducing noise in the low level circuitry. Possible sources of noise are: AC current in shared power lines, magnetic interference between adjacent rack-mount units, high current audio speaker cables. In general:

Avoid:

Mounting sensitive signal processing equipment directly above or below amplifiers.

Sharing AC power outlets between amplifiers and signal processing equipment.

Bundling signal cables with speaker cables or AC power cords.

!AC LINE

Connect the unit to a properly rated supply circuit. The SR2300/2800 can be configured to operate within the following AC

mains voltage ranges:

100-140VAC, 50-60Hz (115VAC, 60Hz typ.)

200-265VAC, 50-60Hz (230VAC, 50Hz typ.)

Connection is made by 14 gauge, IEC type 320, grounded line cord. For safety considerations only a properly grounded (earthed) receptacle should be used. If a grounded circuit is not available, do not break off the ground pin; use the proper adapter plug for a two wire receptacle. The AC mains fuse is accessible at the rear panel of the amplifier. If this fuse blows replace it only with the same type and rating fuse. The correct replacement fuse value is printed on the rear of the amplifier, and on the specifications page.

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Contents SR2300CE SR2800CE Declaration of Conformity Table of Contents Power Cord Grounding Power SourcesPower Cord Protection CleaningCuadros DE Advertencias LEA LAS InstruccionesConserve EL Manual DEL Propietario Siga LAS InstruccionesInstruktionen Lesen Erforderlicher ReparaturserviceService Betriebsanleitung AufbewahrenConserver LE Guide DE Lutilisateur Suivre LE Mode EemploiLire LES Instructions Considérations DE Mise EN GardeAvvertenze Leggete LE IstruzioniConservate IL Manuale Seguire LE IstruzioniSpecifications Introduction Technical Design FeaturesWHY a NEW Amplifier TOPOLOGY? Protection Circuits What Else Distinguishes These AMPLIFIERS?Universal Line Voltage Input Design Features SR2300, SR2800 Front View Rear ViewDesign Features SR2300CE, SR2800CE Cooling InstallationPOWER/THERMAL Requirements NoiseOutput Audio Ground CHASSIS/FLOAT SwitchPower Switch THX SR2800Daisy Chain Output OperationInput Earth Grounded Source EquipmentEquipment Floated EquipmentLevel Controls Load Switch BIAMP/STEREO SwitchSTEREO/MONO 70V 100V Switch ProtectClipping SignalThermal Biamp Mode SR2300/SR2800 Wiring DiagramsStereo Mode SR2300/SR2800 Connector WiringConnector Wiring Connect to CH a output Bridge Mono Mode SR2300/SR280070V Mono Mode SR2300/SR2800 CE Speakon Connector 100V Mono Mode SR2300/SR280070V Stereo Mode SR2800 only Wiring Connect to CH a outputService Policy and Limited Warranty What is CoveredU.S.A 967-3565 / in CANADA, 604