Installation, Cooling, POWER/THERMAL Requirements

Installation

The SR2300/2600 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 SR2300/2600 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 SR2300/2600 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 SR2300/2600 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

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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.