Design Features – GX2800

1.Recessed Front Panel - Prevents switches and controls from accidentally being adjusted or broken.

2.Power Switch - Turns the amplifier ON and OFF

3.Power LEDs - Verifies that the amplifier channel is ON

4.Status LEDs - Displays the status of the amplifier. The LEDs are as follows: SIGNAL indicates if signal is present; CLIP illuminates if the amplifier is being overdriven; PROTECT illuminates if the amplifier is experiencing a “short” in the speaker array; THERMAL illuminates if the amplifier has shut down due an overheating condition.

5.Female XLR & 1/4" TRS Input Jacks - Feeds input signal to the amplifier using industry standard male XLR or 1/4" TRS (tip/ring/sleeve) plugs.

6.Crossover/Delay/CD Eq/Phase - Each channel has an inde- pendendently configurable 500/800Hz, Low Pass/High Pass Crossover; 0-30" Time Delay; 0 to +10dB CD Horn Equalizer; 0/180 degree Phase switch.

7.Stereo/Mono Switch - This dual purpose switch is used to select the operating mode of the amplifier. In Stereo mode the amplifier can be configured for standard 2-channel stereo operation. In Mono mode the amplifier can be con- figured for Standard Bridge mono, 70V mono or 100V mono operation. Turn amplifier off before operating this switch.

8.Level Controls - Adjusts the gain of the amplifier.

9.Load Switch - Selects the speaker impedance or transformer

voltage that will be connected the output binding posts. In Standard Mode the amplifier can drive 2Ω, 4Ω or 8Ω speaker loads. In Constant Voltage Mode the amplifier can drive an array of speakers using 70V or 100V transformers.

10.Output Binding Posts - Connects the speaker array to the amplifier. These jacks allow bare wire, spade lugs or dual banana plugs to be connected to the amplifier.

11.Internal Fans - internal fans keep the amplifier circuitry cool. Allow a minimum of 3" clearance on the front and back of the amplifier vents for adequate ventilation.

12.Chassis/Float ground switch - Isolates Audio Ground from Chassis Ground (Chassis Ground is permanently connect- ed to Earth Ground through the third pin of the power cord). With the switch in the "Chassis" position, the Audio Ground is connected to Chassis Ground. In the "Float" posi- tion, Audio Ground is isolated ("floated") from Chassis Ground, and must be connected to Earth Ground by other means.

!CAUTION: Do not attempt to "float" Audio Ground from Chassis Ground unless you are absolutely certain there is some other common ground between the amplifier and the source equipment. Without this common ground, oscilla- tions and severe damage may occur.

13.Mains Power Fuse - Protects the “mains” electrical circuit in case abnormal current draw from the amplifier is expe- rienced.

14.Mains Power Connector - Connects AC Voltage to the amplifier. The power connector is safety approved IEC type 320. The earth (safety) ground pin of the power connector is permanently connected to the chassis. This connection is capable of shunting in excess of 30A of fault current.

15.Biamp/Stereo Switch - This dual purpose switch selects either standard 2-channel stereo mode or 1-channel in, 2 channels out Biamp mode. Turn amplifier off before oper- ating this switch.

16.Removable Rear Panel - 8 screws can be removed to ser- vice fans and internal components without unracking the amplifier.

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Hafler GX2800CE manual Design Features GX2800, Level Controls Adjusts the gain of the amplifier
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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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