Hafler SR2300, SR2600 BIAMP/STEREO Switch, STEREO/MONO 70V 100V Switch, Protect, Load Switch

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70V mode).

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.

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 4load across the red terminals, set both load switches to 2. The rated power into the mono load will be double the rating for a stereo load. See diagram

70V and 100V Mono mode also use the CH B input connector and level control only. The 70V or 100V speaker array load should be connected across the red terminals of the output connectors. Set both load switches to the appropriate 70V or 100V value. The rated power into the mono load will be double the rating for a stereo load. See diagram

PROTECT

The red "Protect" LED on the front panel indicates that the NOMAD protection circuit has been activated, and is limiting the output power of the amplifier. Typically this may only occur when a transient signal corresponds to a “dip” in the speak- ers’ impedance curve, and will not cause significant clipping distortion. However, if the nominal speaker impedance is sig- nificantly lower than the Load Switch setting, excessive clip distortion can result, accompanied by continuous or prolonged illumination of the protect LED. In this situation the Load Switch should be changed to a lower value until the “protect” events occur infrequently. See “Load Switch” paragraph.

LOAD SWITCH

The Load Switch-located on the front panel-allows the amplifier’s power supply to be matched to the speaker load for more efficient, cooler running operation. The power output and thermal performance of the amplifier remains consistent with all the possible combination of the loads listed. In Stereo or Biamp mode the Load switches can be configured independently, and each channel will deliver the same consistent output power and thermal performance, regardless of how the other channel is configured. Use the following guide when selecting the Load Switch setting:

Nominal Speaker Impedance

Load Switch Setting

5-8

or higher

8

3

-5

 

4

2

-3

or lower

2

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Contents SR2300 SR2600 Page Table of Contents Declaration of Conformity U T I O N L I G R O Achtung Wichtige Sicherheits Informationen T E N T I O N Notare Importanti Informazioni Sulla Sicurezza Specifications SR2300 SR2600Technical Design Features WHY a NEW Amplifier TOPOLOGY?Introduction What Else Distinguishes These AMPLIFIERS? Universal Line Voltage InputProtection Circuits Design Features Front View Rear ViewCooling InstallationPOWER/THERMAL Requirements NoiseAudio Ground CHASSIS/FLOAT Switch Power SwitchOutput Daisy Chain Output OperationInput Earth Grounded Source EquipmentFloated Equipment Level ControlsLoad Switch BIAMP/STEREO SwitchSTEREO/MONO 70V 100V Switch ProtectSignal ThermalClipping Wiring Diagrams Stereo Mode SR2300/SR2600Bridge Mono Mode SR2300/SR2600 70V Mono Mode SR2300/SR2600100V Mono Mode SR2300/SR2600 70V Stereo Mode SR2600 onlyService Policy and Limited Warranty What is CoveredLayouts EMI Filter Schematic Diagrams Bridge Rectifier Amplifier C600maualB.sch-1 Protection C600maualB.sch-2 High Voltage Control C600maualB.sch-3 Housekeeping Control C600maualB.sch-6 Input C600maualB.sch-8 Power C600maualB.sch-5 MAN-2568C 5/00 MJT

SR2600, SR2300 specifications

The Hafler SR2300 and SR2600 are high-performance power amplifiers designed for audio enthusiasts seeking to elevate their listening experience. These models are renowned for their remarkable sound quality, powerful performance, and innovative technologies, making them ideal for both home audio systems and professional applications.

Starting with the Hafler SR2300, this amplifier is a two-channel powerhouse capable of delivering up to 150 watts per channel at 8 ohms, and 225 watts per channel at 4 ohms. One of the key features of the SR2300 is its Class AB design, which strikes an optimal balance between efficiency and sound fidelity. The design minimizes distortion, allowing for clear and precise audio reproduction across a wide frequency range. The amplifier also boasts a frequency response of 20 Hz to 20 kHz, ensuring that both low and high frequencies are accurately represented.

The SR2300 is equipped with a high-performance, toroidal power transformer, which enhances its ability to deliver a stable power supply to the output stages, resulting in improved dynamic range and transient response. Additionally, the SR2300 features comprehensive protection circuitry, safeguarding the amplifier from overheating and short circuits, ensuring reliable operation even under demanding conditions.

In contrast, the Hafler SR2600 offers even more power and versatility, pushing out up to 250 watts per channel at 8 ohms and 400 watts at 4 ohms. This model maintains the same renowned Class AB architecture as the SR2300 but integrates additional features such as a balanced XLR input for enhanced connectivity and reduced noise, which is invaluable in professional audio settings. The SR2600 also incorporates advanced thermal management systems, allowing it to operate efficiently even during prolonged use at higher output levels.

Both models come with customizable gain control options, allowing users to tailor the output to their specific needs. Whether being used to drive high-efficiency speakers in a home theater setup or powering professional studio monitors, the Hafler SR2300 and SR2600 deliver rich, detailed sound that remains consistent across various listening environments.

In summary, the Hafler SR2300 and SR2600 stand out in the audio amplifier market with their robust design, high power output, and advanced technologies that prioritize sound quality and reliability. These amplifiers continue to be favored choices for both audiophiles and professionals, ensuring an engaging and immersive audio experience.