Hafler GX2800CE manual Phase, CD Horn Equalization, BIAMP/STEREO Switch, Level Controls

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PHASE

The Phase switch will select either 0° (normal polarity) or 180° (inverted polarity) for the corresponding output signal.

CD HORN EQUALIZATION

This adjustable high-frequency shelving circuit can be used to compensate for the roll-off of constant directivity (CD) horns. At the +10dB setting, the gain increases with frequency to about +3dB at 3kHz, and finally to +12dB at 20kHz.

+10dB

6

2

BIAMP/STEREO SWITCH

Turn amplifier off before operating this switch. This switch is located on the rear panel and selects either:

Stereo mode- 2 input signals and 2 output signals.

Biamp mode- 1 input signal and 2 output signals.

Biamp mode is useful if a mono signal needs to be distributed to speakers of differing impedance or power level. The load switch for each channel can be selected for the appropriate load, and the level controls can be adjusted individually for each channel. See diagrams

The Stereo/Biamp switch is defeated whenever the front panel Stereo/Mono switch is in the Mono position. In this case, the Stereo/mono switch overrides the Stereo/Biamp switch, and the amplifier operates in mono mode.

LEVEL CONTROLS

The gain for each channel can be controlled individually using the front panel level control. The controls have 32 detented positions that are calibrated in dB. The maximum gain position is marked as the "0 dB" position, and the lower gain posi- tions indicate the amount of attenuation relative to the maximum gain position in dB. Minimum gain position is marked as “Off” and represents over 100dB of attenuation relative to the maximum gain position.

The CH B level control is used for all Bridged Mono configurations, and 100V and 70V modes (Except for GX2800 Dual 70V mode).each channel. See diagrams

The Stereo/Biamp switch is defeated whenever the front panel Stereo/Mono switch is in the Mono position. In this case, the Stereo/mono switch overrides the Stereo/Biamp switch, and the amplifier operates in mono mode.

STEREO/MONO 70V 100V SWITCH

Turn amplifier off before operating this switch. This switch will override the Stereo/Biamp switch.

This Stereo/Mono 70V 100V switch is located on the front panel and selects either:

Stereo mode- 2 input signals and 2 output signals.

Mono, 70V, 100V mode- 1 input signal and 1 bridged output signal.

Mono mode uses the CH B input connector and level control only. The output load should be connected across the red ter- minals of the output connectors. Set both load switches equal to 1/2 the load value. For example, after connecting a 4Ω load across the red terminals, set both load switches to 2Ω. The rated power into the mono load will be double the rating for a stereo load. See diagram

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Contents Page 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? What Else Distinguishes These AMPLIFIERS?Universal Line Voltage Input Protection CircuitsDesign Features GX2800 Level Controls Adjusts the gain of the amplifierDesign Features GX2800CE Cooling InstallationPOWER/THERMAL Requirements NoiseAudio Ground CHASSIS/FLOAT Switch Power SwitchOutput Daisy Chain Output OperationInput Earth Grounded Source EquipmentCrossover DelayFloated Equipment FrequencySTEREO/MONO 70V 100V Switch PhaseBIAMP/STEREO Switch CD Horn EqualizationProtect Load SwitchSignal ThermalBiamp Mode Wiring DiagramsStereo Mode Connector WiringBridge Mono Mode 70V Mono ModeConnector Wiring Connect to CH a output 100V Mono Mode 70V Stereo ModeService Policy and Limited Warranty What is CoveredMAN-3643-A 01 BM

GX2800, GX2800CE specifications

The Hafler GX2800CE and GX2800 are high-performance power amplifiers designed for audiophiles and professional sound reinforcement applications. Renowned for their reliability and audio fidelity, these models represent a seamless combination of innovative technologies and robust engineering that ensures impeccable sound quality.

One of the standout features of the Hafler GX2800 series is their high current output capability. This allows the amplifiers to drive a wide variety of loudspeakers, including those with demanding impedance requirements. With a power output of 280 watts per channel at 4 ohms, these amplifiers deliver sufficient power for large venues while maintaining clarity and dynamic range. The ability to handle low impedance loads without compromising performance is a hallmark of the Hafler brand.

The GX2800CE and GX2800 are equipped with Hafler's proprietary feedback technology, reducing distortion and enhancing overall sound quality. This technology ensures that the amplifiers perform well across the audio spectrum, allowing for rich, detailed sound reproduction. The low total harmonic distortion (THD) figures also contribute to a cleaner audio signal, ensuring that the listener experiences music as it was intended.

Another notable characteristic of the GX2800 series is its built-in protection circuitry. This includes short-circuit protection, thermal overload protection, and output DC protection, which work together to safeguard the amplifier and connected speakers during operation. The durable design of the chassis provides further reliability, suitable for both studio environments and live sound applications.

The amplifiers feature balanced XLR and unbalanced RCA inputs, providing versatility for various audio setups. Additionally, the rear panel includes binding post speaker outputs for secure connections to loudspeakers.

For those seeking a powerful and reliable amplifier that does not compromise on audio quality, the Hafler GX2800CE and GX2800 are exceptional choices. With their array of features designed to enhance performance and user experience, these amplifiers stand out in the competitive audio equipment market, making them ideal for both home and professional uses. Whether you are mixing in the studio or providing sound for a live performance, the Hafler GX2800CE and GX2800 will deliver exceptional results, making them a worthy investment for any audio enthusiast.
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