Ashly FR-8 Owner's Manual download pdf (Page 17)

Operating Manual - nX, nXe, and nXp Power Ampliers

[Add Item>Control Objects] - Stand-alone control objects can be added to the canvas and linked to control specific

device functions. They include Level Fader, Signal LED, Level Meter, Preset Button, Standby Button, Mute Button, Logic Out

Button, and Source Select Button.

[Add Item>Display Objects] - Text and image files can be added to the canvas.

9.1g Options Menu

[Options>Auto Add Online Devices] - When this is checked On, all network devices appear on the canvas whenever

the software is launched or when the networked is scanned for devices.

[Options>Display Grid] - Turns on or off the project canvas grid

[Options>Auto-Close Preset Recall Messages] -

Any device that recalls a preset will trigger a message that appears on

the canvas. If this is checked On, those messages will go away automatically, otherwise they will stay on the display until closed

by the user.

9.1h Flash Programmer Menu

[Flash Programmer>Launch Flash Programmer] - This is used to update the firmware on any networked Ashly

device. All available firmware update files can be downloaded from the Ashly website.

[Flash Programmer >Launch WR-5 Flash Programmer] - WR-5 firmware must be updated through its hosting

device, since WR-5 remote controls are not themselves networked. Download the new WR-5 firmware, select the host device,

and follow the instructions.

9.1i Load Analysis Menu - Load Analysis is a software tool used to visualize the swept AC impedance of a given

loudspeaker, and to test the integrity of a potentially damaged loudspeaker or connection. Load impedance analysis works by

formulation of speaker output measurements taken when a user defined swept sine wave input is applied to one amplifier chan-

nel by software. Currently, the only Ashly amplifiers with load analysis are NE two-channel (dsp) and nXp.

Loudspeakers are specified with a nominal impedance rating, 8 Ohms for example. This is an average rating, the actual

impedance across it's frequency range can vary substantially above or below 8 Ohms due to

inductance, resonance, and other

properties which affect impedance

. Lower impedance, even within a narrow frequency range, can increase the amount of am-

plifier current delivered to the speaker. This can present a problem when wiring multiple speakers in parallel, as the combined

speaker impedance may become so low that it causes the amplifier to go into overcurrent protection mode and shut down. The

way to avoid this is to pay attention to the lowest measured impedance rather than the nominal impedance rating for a given

speaker load, and make sure the amplifier is rated to drive that load.

A second function of load analysis is for troubleshooting loudspeakers. When loudspeakers are damaged by overheated

voice coils, torn cones or surrounds, mechanical damage from being dropped, or have corroded connections, they can exhibit

different load impedance characteristics than when new. An initial load impedance analysis can be performed when the system

is first installed and the results saved to disk for reference. Future load impedance tests can be compared to the original refer-

ence data and issue a pass/fail rating based on a user-defined percentage of similarity to the original data. Load anaylsis can

thus help determine if loudspeakers are damaged or disconnected, and can be administered from a remote network location.

Keep in mind that this test is a real time audible event, so be certain that all test parameters, particularly volume (sweep

level) and frequency range (sweep start/sweep stop), are suited for the speakers under test, and that the venue is ready for a brief

period of test tones at potentially significant volume. Note: During the test, all audio DSP processing in the amplifier is stopped.

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Ashly FR-8 Owner's Manual Page 17