Operating Manual - nX, nXe, and nXp Power Amplifiers Important Safety Instructions Consignes de sécurité à lire attentivement The lightning flash with arrowhead symbol, within an equilateral triangle, Le symbole de la flèche dans un triangle équilateral symbolisant la foudre is intended to alert the user to the presence of uninsulated "dangerous est prévu pour sensibiliser l’utilisateur à...
Ashly’s exclusive Five Year, Worry- Free Warranty remains one of the most generous policies available on any com- mercial- grade product. The warranty covers every product with the Ashly brand name, and is offered at no extra cost to you.
1 INTRODUCTION Thank you for your purchase of this Ashly nX, nXe, or nXp power amplifier. This product uses state of the art, light weight, high power, high efficiency switching technology developed through years of design and field testing. nX amplifiers are available in the following three series, designed to meet the most demanding live sound and fixed installation sound systems in stadiums, arenas, performance venues, worship spaces and convention centers.
AC Mains Connector Types - The following table shows the AC mains plug type supplied with each nX amplifier model, as well as the required receptacle. A detachable 20A Neutrik PowerCON ® mains chassis connector is installed on all ® models except for nX 3.04, which uses a 30A PowerCON nX 1.52 nX 1.54 nX 3.02 nX 3.04...
Operating Manual - nX, nXe, and nXp Power Amplifiers 2.2 Input Signal Wiring Use shielded wiring for balanced or unbalanced audio signals. Shielding which is properly grounded will protect the signal from outside electrical interference such as RF, fluorescent lighting, and computer/display emissions. Unbalanced or single-ended (tip-sleeve) lines of less than 10 feet are generally ok, but for greater distance or noisy field environments, always use balanced signal.
It is not necessary to leave empty rack spaces above or below the amplifier. See the BTU/hr chart below for amplifier thermal output characteristics. Maximum Thermal Output in BTU/hr nX 1.52 nX 1.54 nX 3.02 nX 3.04 Sleep Mode <3.4 <3.4 <3.4 <3.4...
Operating Manual - nX, nXe, and nXp Power Amplifiers 3 nX AMPLIFIER PROTECTION Power-On Delay -All models have a fixed and undefeatable warm-up delay of three seconds when first powered on or awakened from sleep. This is necessary to prevent excessive in-rush current during start-up. Additionally, nXe and nXp amplifiers have programmable Power-On Delay ranging from zero to 25 seconds in 100ms increments (see section 9.2).
Operating Manual - nX, nXe, and nXp Power Amplifiers 4.4 Channel Attenuators – These control the input signal level to the amplifier, and work in conjunction with the remote DC fader level controls and the software control surface fader controls (if the amp is networked). When an input attenuator is turned fully off, it's red Clip/Mute LED turns on and stays on to indicate mute status for that channel.
® AC Mains Connector - Always use the AC cord provided by Ashly for connecting to mains power. The amplifier auto-detects mains voltage from 120VAC to 240VAC. WARNING: Do not remove or lift the mains connector ground. 5.8 Serial Number Sticker - This sticker identifies the product model number, serial number, MAC address (if networkable), and AC mains current/power rating.
6.5 Preset - Each pin (P1 through P4) can be connected to the adjacent ground pin (G) via Ashly's WR-2 remote or other contact closure to recall a stored preset or sub preset from the amplifier. Preset pins 1-4 correspond directly to amplifier presets 01 - 04.
Cat-5, Cat-5e, or Cat-6 wiring. Maximum Ethernet cable distance is 100 meters (328 ft). Ashly nXe and nXp amplifiers will adapt to either a straight through pin to pin or crossover Ethernet cable. For wireless iPad control using a custom "Ashly Remote"...
The primary canvas is always called "Ashly Project", but additional project files can be saved under different names. Additional visual control objects such as level faders, LEDs, meter bars, preset, standby, mute, and source select but- tons can be placed on the canvas and assigned to control a specific parameter on one or more devices in the project.
1) Connect all Ashly devices to the network and launch the software, verifying that all devices appear green in the network device tree. 2) Open the project file and link one device at a time by dragging each network device from the device tree onto its virtual device icon represented on the canvas.
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.
(firmware) to the amplifier over the network. Latest firmware updates, if available, can be found on the Ashly website. When the amplifier is put into flash reprogram mode, all audio functions are suspended, the power switch LED flashes, and the COM LED remains lit until flash reprogram is completed.
Operating Manual - nX, nXe, and nXp Power Amplifiers 9.2c Power On Delay - Use this feature to delay the amplifier turning on when first powered up or when waking from sleep. Delay is measured in increments of 100mS, with the limit at 25.5 seconds. The power amplifier should be the last device to power up after other system components have turned on and stabilized.
Operating Manual - nX, nXe, and nXp Power Amplifiers 3) Use an Ashly WR-5 or neWR-5 remote control. 4) Use the event scheduler. Note: A full preset recall event will overwrite any unsaved changes, so be sure the current configuration is saved before continuing or any changes will be lost.
Page 21
Operating Manual - nX, nXe, and nXp Power Amplifiers 9.4a (continued) Software Control Surface - Channel Stereo/Bridged Status - This shows if a channel pair is in stereo or bridge mode as set by back panel switch. In bridge mode, input signal is automatically taken from the odd channel input and inverted, then sent to the even channel.
The amplifier's firmware revision is shown in the hardware configuration section as well. From time to time Ashly may post updated firmware on our website which can be downloaded and then flash reprogrammed to the amplifier. Flash reprogram is found in the device options menu when connected to a live amplifier.
Operating Manual - nX, nXe, and nXp Power Amplifiers 9.4d DSP Control Tab All signal processing is done in the DSP control tab, with separate input and output sections and a cross-linking matrix mixer between. From left to right, each channel in the DSP tab includes the following features: Input/Output Channel Number - Click on this to use each channel's Clear, Copy/Paste, Link, and Sub Preset functions.
Page 24
Operating Manual - nX, nXe, and nXp Power Amplifiers Pluggable DSP Block Descriptions 1) Dynamics Controls Brick Wall Limiter The Brick Wall Limiter is a compressor with fixed ratio (infinite). It allows for user-adjustable threshold, attack time and release time. It also allows for assignment to a Link Group to link the parameters of this block with limiters on other channels.
Page 25
Operating Manual - nX, nXe, and nXp Power Amplifiers Release Time - The rate (in ms/dB) at which the Compressor attenuation will return to normal, once the signal falls below Threshold. Link Group - Group to which all parameters are assigned, to facilitate simultaneous adjustment to multiple Compres- sors in the system.
Page 26
Operating Manual - nX, nXe, and nXp Power Amplifiers Advanced Parameters: (see image on previous page) Threshold Below Target - Determines the relative input signal level above which the Autoleveler increases gain, below which no action is taken. Ratio - This is the ratio of the input level change in dB to output level change in dB. It determines the degree of boost or cut applied to a signal to maintain the target level.
Page 27
Operating Manual - nX, nXe, and nXp Power Amplifiers Ducking At Mixer(s) This feature is particularly useful when setting up multiple zones where only some of the output channels should be ducked (e.g. restaurants, courtrooms, etc.). When this feature is selected, each Matrix Mixer is allowed to enable or disable the Ducking on that particular output.
Page 28
Operating Manual - nX, nXe, and nXp Power Amplifiers Ambient Noise Compensation (output channels only) Ambient Noise Compensation (ANC) is an automatic output level control that uses a microphone to monitor background noise in a specific zone, then adjusts the output level to that zone accordingly in order to maximize intelligibility. One amplifier input channel must be dedicated to the sensing microphone and cannot be used for other inputs.
Page 29
Operating Manual - nX, nXe, and nXp Power Amplifiers ANC Setup Procedure 1) In the control software, assign the ANC function to the channel to be used for background music or voice paging (program audio). Set the ANC controls to the "typical" settings described above, which is also the default settings of a new ANC function when it is first placed in the signal processing block.
Page 30
VCA Groups. RD-8C Remote Control Gain Remote Gain allows the user to choose where Ashly's RD-8C will apply gain to a signal path (WR5s are handled by the WR5 Gain Block). When the remote is assigned to a channel, it applies gain/attenuation within the remote gain block, allowing the other gain blocks to remain unaffected by the remotes.
Page 31
Operating Manual - nX, nXe, and nXp Power Amplifiers neWR-5 Remote Control Gain WR-5, The WR5/neWR5 Gain block is the DSP block where channel gain adjustments are made via the WR5 or ne-WR5 remote. This block is nearly identical to the standard gain block except that it is also controllable via the WR5 or ne-WR5 remote and does not have polarity inversion.
Page 32
Operating Manual - nX, nXe, and nXp Power Amplifiers Parametric Equalizers (10, 6, 4, or 2 band PEQ) The Parametric Equalizer (PEQ) provides several types of filters to tailor the signal response with high precision. Four sizes are provided, with 2, 4, 6 or 10 filters. Filter types include Parametric, High-Shelf, Low-Shelf, Variable-Q High-Pass, Variable-Q Low-Pass, All-Pass, Band-Pass and Notch.
Page 33
Operating Manual - nX, nXe, and nXp Power Amplifiers Level - Selected filter boost/cut amplitude. Bandwidth - Selected filter bandwidth (or Q). . Filter Type Details Parametric EQ Filters Parametric EQ uses peak filters with the ability to control boost or cut, frequency center, and bandwidth. Think of one band of parametric EQ as a single graphic equalizer fader, except that the frequency is variable, and that the bandwidth, or how "wide"...
Page 34
Operating Manual - nX, nXe, and nXp Power Amplifiers Feedback Suppressor The Feedback Suppressor (FBS) provides automatic feedback control. This is done by constantly monitoring the audio and automatically adjusting any one of 12 filters to remove feedback. Notch and Parametric Filter types are used, depending on the characteristics of the feedback.
Page 35
Operating Manual - nX, nXe, and nXp Power Amplifiers Background Information The feedback suppressor uses both notch filters and parametric filters to automatically and quickly suppress multiple feedback tones and also produce a smooth equalized response which sounds pleasing for music and speech program. Before using the FBS (Feedback Suppressor), it is helpful to understand the following basic concepts in order to effectively suppress feedback and achieve good sounding audio program.
Page 36
Operating Manual - nX, nXe, and nXp Power Amplifiers 4) Crossover Functions Four-Way, Three-Way, and Two-Way Crossover (outputs only) The Crossover tool offers a convenient way to configure amplifier outputs. Depending on whether the desired cross- over is two, three, or four-way, all High-Pass (HPF) and Low-Pass Filters (LPF) are automatically placed on output channels. Initial crossover frequencies are assigned with the default filter type of 24dB/oct Butterworth, both of which can be changed.
Page 37
Operating Manual - nX, nXe, and nXp Power Amplifiers Bessel These filters, as implemented in Ashly's NE devices, are always -3dB at the displayed crossover frequency. Bessel filters have a maximally flat group delay. Stated another way, Bessel filters have the most linear phase response. When a Bessel HPF and LPF of the same corner frequency are summed, the combined response is +3dB for 12dB/oct, 18dB/oct, and 48dB/oct Bessel filters, and -2dB for 24dB/oct Bessel filters.
Page 38
Operating Manual - nX, nXe, and nXp Power Amplifiers 5) Delay Speaker Delay and Delay Both the Speaker Delay and Delay allow the signal to be delayed by a given number of samples (a given amount of time). The only differences between the Speaker Delay and Delay is the total amount of delay available and the amount of DSP resources used by each block.
Operating Manual - nX, nXe, and nXp Power Amplifiers 9.4d DSP Control Tab functions, continued ..Input/Output Matrix Router - Any input can be routed to any or all outputs. Click and drag from the input to output to assign routing. For faster routing of a single input or output to multiple channels, highlight its node and then press Ctrl+Click over the desired nodes to connect to.
Page 40
Automixer Setup Setting-up the Ashly gain-sharing automixer is quite simple compared to other gating-type automixers. The following procedure is recommended for most multi-microphone speech applications.
Operating Manual - nX, nXe, and nXp Power Amplifiers 9.4e Input Source Tab Inputs are analog balanced line, AES3 digital audio (op- tional), or CobraNet (optional). Setting the input source to Auto gives priority to digital audio inputs if they are installed. 9.4f Metering Tabs (not shown) There are three meter tabs, including general I/O Meters, Meter Dynamics for gate and compressor/limiter functions, and...
"Ashly Remote" can be downloaded from the iTunes App Store. “Ashly Remote” is an application used to create a custom and secure graphical user interface (GUI) for Ashly networked devices via iPad wireless control. The sound system designer creates a GUI specifically tailored for the end user and their networked Ashly products, allowing them remote control access to select audio functions.
Operating Manual - nX, nXe, and nXp Power Amplifiers 10.4 Sleep Clock Timer On all amplifier models, the sleep clock timer can be enabled or disabled using the front panel factory reset switch as de- scribed in section 4.3. On nXe and nXp series models only, the sleep clock timer can be adjusted from zero (off) to 120 minutes. If sleep mode is enabled, and there is no audio activity for the duration of the sleep clock timer (fixed at 30 minutes for nX series), the amplifier goes to sleep until signal is present again or until the power switch is pressed.
Operating Manual - nX, nXe, and nXp Power Amplifiers 3) neWR-5 - The neWR-5 function buttons are assigned gain control function in the same manner as the WR-5, but instead of connecting to the amplifier's data port, the neWR-5 uses an Ethernet network connection. 4) RD-8C - The RD-8C is programmed from Protea software when wired to a nXe or nXp amplifier under software control.
Operating Manual - nX, nXe, and nXp Power Amplifiers 11 ASHLY REMOTE CONTROL DEVICES In addition to iPad control, the following Ashly devices are available for remote control of amplifier functions. 11.1 WR-1 Level Control (All nX models) - The WR-1 is a dual potentiometer remote volume control designed to fit in a standard wall electrical box, and is wired to the amplifier back panel Euroblock connector labeled “CH (1-4) Remote DC Level”...
The WR-5 is phantom powered from the amplifier. Up to four different WR-5 remotes can be wired in series and phantom powered from one amplifier, and more can be added by using an Ashly RPS-18 re- mote power supply.
Connecting and powering the neWR-5 is done using Cat-5 Ethernet cable and an IEEE 802.3af Power over Ethernet (PoE) switch, hub, or in-line PoE injector. If PoE is unavailable, the Ashly RPS-18 (sold separately) provides 15- 48VDC capable of at least 2 watts per neWR-5 and can be hard wired to the back of the neWR-5. PoE current draw is 38mA @48VDC and 80mA@15VDC.
Operating Manual - nX, nXe, and nXp Power Amplifiers 12 AES3 DIGITAL AUDIO INPUT/PASS-THROUGH nXe and nXp amplifiers support factory installed two or four chan- nel AES3 input options, named OPAES2* and OPAES4*. The AES3 format uses two channels of digital audio transmitted over a single cable, maintaining a completely digital signal path into the amplifier stage or into the DSP stage if DSP is installed.
Ashly offers a CobraNet ® network audio interface module (CNM-2), which must be factory installed on nXe and nXp ampli- fiers. Additional network audio interface modules will become available from Ashly in the future, including and Dante™. 13.1 CobraNet ®...
Operating Manual - nX, nXe, and nXp Power Amplifiers CobraNet Receiver Control Bundle: Selected bundle this receiver is listening to. Status: Indicates if a valid (green) bundle is being received. Channel Status (1-8): The Signal Status indicates the current bit depth, sampling rate, and latency of the received audio stream.
Page 51
Operating Manual - nX, nXe, and nXp Power Amplifiers Active CobraNet Jack: Shows which of the two CobraNet jacks is currently active (only one can be active at a time). Primary CobraNet Jack: Shows the status of the primary CobraNet jack. Secondary CobraNet Jack: Shows the status of the secondary CobraNet jack.
Software 1) Is the PC successfully communicating with the network? (sec 8) 2) Is the amplifier successfully communicating with the network? (sec 8) 3) Does the amplifier name appear as green text in the Ashly Network device tree? (sec 9.1a)
Page 53
Operating Manual - nX, nXe, and nXp Power Amplifiers 4) Is the amplifier device icon placed on the software project canvas a virtual device instead of a live amp? Any virtual device MAC address will always read FF-FF-FF-FF-FF-FF. (sec 9.1b) 5) Was the amplifier IP address auto-detected (recommended) or manually assigned? (sec 8.1) 6) Is firewall software blocking initial communication from the device?
Operating Manual - nX, nXe, and nXp Power Amplifiers 15 nX AMPLIFIER SPECIFICATIONS General Power Amplifier Specifications 0dBu = 0.775V rms) nX Amplifier Model nX3.04 nX3.02 nX1.54 nX1.52 Maximum Output Power Per Channel EIAJ Test Standard, 1kHz, 1%THD, 120VAC, all channels driven Low Z output 2 Ohm .
Page 55
Power Cable Connector ....... .20A powerCON (32A powerCON on 3.04 model only) ®...
Operating Manual - nX, nXe, and nXp Power Amplifiers Protea DSP Specifications Gate Threshold ....-80dBu to +20dBu Range ..... off, 100dB to 0dB Input Source Selection Attack .
Page 57
Operating Manual - nX, nXe, and nXp Power Amplifiers Linking Feedback Suppressor (only available with 48kHz sampling rate) All DSP functions can be linked to 1 of 16 link groups Filters ..... 12 In/Out per filter .
ASHLY AUDIO, INC. shall be obligated to only correct defects in the product itself. ASHLY AUDIO, INC. is not liable for any damage or injury, which may result from, or be incidental to, or a consequence of, such defects.
Need help?
Do you have a question about the 3.04 and is the answer not in the manual?
Questions and answers