Ashly TRA-4150 manual Distorted Sound 11.3 Hum or Buzz Noise, Powerflex Dimensions

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Operating Manual - Powerflex Multi-Channel Power Amplifier

11.2

Distorted Sound

11.3

Hum or Buzz Noise

1.) Clip LED is flashing regularly

Amplifier is being overdriven. Turn down the in- put level control, or reduce the output level from the sig- nal source.

2.) Clip LED is not flashing at all

Amplifier input signal may be exceeding input headroom, which is greater than +12dBu, or 3.4V rms (measured using continuous 1kHz sine wave). Incoming signal level higher than +12.8 dBu will cause distortion in the amplifier. Turning down the input level controls will not eliminate distortion if the input headroom is exceeded. Turn down the output level of the device driving the am- plifier instead.

Additionally, an input signal may already be dis- torted before it gets to the amp. Check to see if a piece of equipment in the signal chain before the amp is clipping. For best performance, the amplifier should be operated with input levels fully CW. Also check for damaged speaker drivers that could cause distorted sound.

Be sure that the power cord’s 3-prong plug is con- nected to a properly earth-grounded outlet. Lifting the grounding third prong may not improve hum or buzz and can create a potential shock hazard.

Hum is usually caused by ground currents flow- ing between different pieces of equipment. Ground cur- rents can be minimized by using a single point AC ground for the sound system, and by using balanced connections with quality cable throughout the audio path.

Buzz, as well as certain audible high frequency tones, can be caused by environmental emissions such as lighting dimmers, neon lights, or computer equipment. Use balanced connections, and try moving the amplifier, wir- ing, lighting, or other equipment to different locations to isolate the source of the noise.

Sections 3.3, 5.3, 7.1, and 7.2 further discuss is- sues related to grounding and noise problems.

12.POWERFLEX DIMENSIONS

16.94"

2.25"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13.54"

 

 

13.18"

 

 

 

 

 

 

 

 

 

1.25"

18.5"

5.19"

4.75"

2.25"

Channel 1 Channel 2 Channel 3 Channel 4 Channel 5

Channel 6

 

 

 

 

 

 

 

 

 

 

 

Pr ot ect

 

 

 

 

 

 

 

 

 

Po wer

Powerflex 6250

 

 

 

 

 

 

 

 

 

Cli p

 

 

 

 

 

 

 

 

 

Therm al

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19"

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Contents Powerflex  Table Of Contents Design Theory Unpacking AC Power RequirementsIntroduction 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 No Audio Output Troubleshooting TipsDesign Theory 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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