Input Options, Input Isolation Transformer

Operating Manual - MFA-8000 and MFA-6000 Power Amplifier

7.6Speaker Outputs - Speakon Connectors Neutrik Speakon connectors are provided to con-

nect with the Neutrik NL4FC 4-conductor plug. For the channel 1 and 2 Speakon connectors, the following pin assignment is used:

Pin 1+ = speaker hot

Pin 1- = speaker ground

The third Speakon connector in the center pro- vides a stereo connection if operating in stereo mode or a bridged connection if operating in bridged mode. The pin assignment for this connector is:

Stereo Mode	Bridged Mode
Pin 1+ = Ch.1 hot	Speaker hot
Pin 1- = Ch.1 ground
Pin 2+ = Ch.2 hot	Speaker return
Pin 2- = Ch.2 ground

8.INPUT OPTIONS

Input option panels are available to provide built- in features such as a stereo compressor-limiter, a mic and line mixer, a crossover for bi-amplified systems, and in- put transformers for signal isolation. In addition to the MFA amplifiers, all FTX MOS-FET amps, the CFT-1800 convection cooled amp, and P70 series 70 volt amps will accept Ashly input option panels. A brief description of currently stocked input options follows. Consult your dealer for detailed information on input options, or call the factory.

8.1Input Isolation Transformer

The input isolation transformer can be installed directly into the standard input supplied with every ASHLY amplifier (except for the single rack space SRA-

120). The input transformer provides complete electrical isolation from the amplifier and its signal source to elimi- nate any ground-induced hum noise. The transformer in- put also further reduces any common-mode noise and ra- dio frequency interference. The transformer option is in- stalled within the standard input panel and does not change the operation of any switches or controls.

8.2Peak Limiter/Compressor

The limiter input option provides peak signal lim- iting from excessive input levels for speaker protection and overall level control. Separate limiter threshold con- trols, limit indicator LED’s and limit on/off switches are provided on each channel allowing fully discrete stereo limiting operation.

8.3Two-Way Crossover

The crossover input option provides fixed-fre- quency 24 dB/octave high-pass and low pass filters al- lowing the two amplifier channels to operate bi-amped, full range with low out, both channels low out, or bridged low out. Auxiliary low and high outputs are available for connecting additional amplifiers. Included with the cross- over input option are single in-line package (SIP) resis- tor networks which allow preselection between standard crossover frequencies of 160Hz, 500Hz, 750Hz, 1.2KHz, and 1.6KHz. 360° of phase control is provided for proper acoustical alignment of high and low frequency drivers. Selectable constant directivity horn EQ is provided for both small and large horn designs.

8.4Six Input Mic-Line Mixer

The mixer input option provides four high-im- pedance line inputs and two balanced low-impedance mi- crophone inputs, each with its own level control. A swit- chable 200 Hz high-pass filter is provided on the mic in- puts to reduce unwanted low frequency noise. An inter- nal jumper allows selection of 15 Volt phantom power applied to the mic inputs for use with condenser mics. The option has a master level control and selectable ste- reo, mono and bridging modes. Insert Points are avail- able for patching external processing into the left and right channels.

MFA-6000, MFA-8000 specifications

The Ashly MFA-8000 is a state-of-the-art audio amplifier designed for both professional and commercial audio applications. Renowned for its reliability, sound quality, and versatility, this amplifier is perfect for installation in concert halls, theaters, houses of worship, and various other venues that require robust audio performance.

One of the standout features of the MFA-8000 is its impressive power output. Delivering 800 watts per channel at 4 ohms, the amplifier is capable of driving demanding speaker systems with ease, ensuring that sound reproduction remains crisp and clear, even at high volumes. This power is complemented by a dynamic range that enhances the listening experience, making it suitable for music playback, public announcements, and other audio applications.

The MFA-8000 incorporates Class AB amplification technology, which is known for its low distortion and high linearity. This ensures that the audio signal remains faithful to the source material, providing an authentic listening experience. Additionally, the amplifier includes advanced protection circuits that safeguard against overloads, short circuits, and overheating, ensuring longevity and durability.

In terms of connectivity, the MFA-8000 offers a variety of input options, including XLR, 1/4" TRS, and RCA connectors, making it highly versatile and compatible with a wide range of audio sources. The rear panel features an intuitive layout that simplifies the connection process, allowing users to easily integrate the amplifier into existing audio setups.

Furthermore, the MFA-8000 is equipped with built-in signal processing capabilities, including adjustable crossover settings and EQ controls, allowing users to tailor the output to suit the specific acoustics of their venue. This adaptability makes it an excellent choice for installations where sound quality must be optimized for different settings or events.

Cooling is also a critical aspect of the MFA-8000’s design. The amplifier features a highly efficient cooling system with variable-speed fans that ensure the unit remains cool even during prolonged use, preventing thermal issues that could compromise performance.

Overall, the Ashly MFA-8000 is a powerful and reliable audio amplifier that combines advanced technologies with practical features, making it an ideal solution for a wide range of professional audio applications. Its robust construction, high-quality sound reproduction, and user-friendly design make it a valuable addition to any audio setup, ensuring that it meets the demands of both sound engineers and everyday users alike.

Ashly MFA-8000, MFA-6000 manual Input Options, Input Isolation Transformer, Peak Limiter/Compressor

Models: MFA-6000 MFA-8000