Ashly TRA-4150 manual Front Panel Indicators

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Operating Manual - Powerflex Multi-Channel Power Amplifier

Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6

Protect Thermal

Clip

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

Signal

Powerflex 6250

6.FRONT PANEL INDICATORS

6.1Power Switch

When the unit is switched on there is a five sec- ond delay, during which time the PROTECT circuit will activate, disconnecting the speakers from the amplifier output. When turning off the amplifier, the load is removed instantly, and the protect LED will briefly turn on as the power supply discharges.

6.2Signal Indicator

The signal present LEDs illuminate at an input level of about 13mVrms (-35.5dBu).

6.3Clipping Indicator

The clipping LEDs illuminate at an input level of about 870mVrms (+1.0dBu), with all channels driven by 1KHz into 8Ω . This indicates that the signal processing circuitry has determined output levels to be approaching the available power supply rails and has begun to “soften” signal peaks. Actual onset of “hard” clipping depends on audio program and total load impedance and does not oc- cur until the signal processing circuitry can no longer com- pensate, which means that signal integrity can be maintained even if the clipping indicators illuminate for short periods of time.

6.4Thermal Status Indicator

The thermal LEDs illuminate when the tempera- ture of any one of the heat sink extrusions reaches 85 to 90°C. Both channels of the affected amplifier module will shut off until the measured temperature drops below about 70°C. The amplifier should be able to maintain proper

operation at an ambient room temperature of 50°C (122°F) or less with typical audio program and all channels driven into 4Ω .

6.5Protect Indicator

The protect LEDs illuminate when the fault moni- toring microprocessor has determined that one of the fol- lowing conditions exists:

-Power supply undervoltage

-Power supply overvoltage

-Output overcurrent

-Heat sink overtemperature

-Unacceptable DC output content

-Unacceptable high frequency output content

-AC power interruption

Because the signal processing module used in Powerflex amplifiers processes two channels simulta- neously, a fault in one channel will result in a protect con- dition for both channels processed by the same module, ex. channels 1-2, 3-4, and 5-6 (6250 only). Thus there will never be a case where only one of the amplifier chan- nels is shown in protect mode. When a pair of protect LED's are illuminated, internal relays have removed the channel pair's speaker loads from the amplifier output and connected the speakers to ground. If the fault is isolated to one module (channel pair), the other channels will re- main unaffected.

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Contents Powerflex  Table Of Contents Design Theory AC Power Requirements IntroductionUnpacking Cable Requirements RACK-MOUNTING RequirementsFront Panel Indicators Rear Panel Features Input ConnectorsStereo/Mono Switch Input Ground Switch50Hz Low Cut Switch Multi-Channel OperationPowerflex AC InletSELF-PROTECTION Features Specific conditions resulting in a fault are as followsSix Channel Setup dual stereo Typical ApplicationsBridged Mono Setup Troubleshooting Tips Design TheoryNo Audio Output Powerflex Dimensions 11.2 Distorted Sound 11.3 Hum or Buzz NoiseSpecifications Warranty Information6250-3

TRA-4150 specifications

The Ashly TRA-4150 is a robust, high-performance amplifier designed to meet the demanding requirements of modern audio installations. Known for its reliability and exceptional sound quality, the TRA-4150 is ideal for both commercial and residential applications, including venues such as auditoriums, houses of worship, and entertainment spaces.

One of the defining features of the TRA-4150 is its power output. With a maximum output of 150 watts per channel at 4 ohms and 75 watts per channel at 8 ohms, this amplifier delivers enough power to drive a variety of speakers efficiently. It is equipped with a class AB topology, which ensures low distortion and high sound fidelity, making it suitable for critical listening environments.

The TRA-4150 boasts numerous advanced technologies designed to enhance performance and user experience. It incorporates a comprehensive protection system that includes thermal protection, short circuit protection, and DC fault protection, ensuring safe operation under various conditions. This reliability is crucial in professional settings where equipment failure is not an option.

Furthermore, the Ashly TRA-4150 features integrated signal processing capabilities, allowing users to optimize sound performance with ease. Its variable high-pass and low-pass filters enable tailored control over the audio signal, ensuring that sound output is clear and well-defined across frequencies.

Connectivity is another strong point of the TRA-4150. The amplifier supports both balanced and unbalanced input options, ensuring compatibility with a variety of audio sources and equipment. Additionally, the unit has a convenient input gain control for each channel, allowing for precise adjustment of signal levels.

The design of the TRA-4150 is both sleek and functional. The unit has a compact form factor, making it easy to integrate into existing audio setups. Furthermore, the built-in fan cooling system ensures efficient heat dissipation, which is vital for maintaining performance during extended use.

Overall, the Ashly TRA-4150 amplifier stands out in the market due to its powerful output, advanced protection technologies, and user-friendly features. Whether in a live performance setting or a fixed installation, the TRA-4150 delivers reliability and exceptional audio quality, making it a preferred choice for audio professionals and enthusiasts alike.
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