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Ashly NE4250PE

1000W Peak, 4-Channel Class D Power Amplifier w/ Protea DSP

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The new NE-Series (NE = Network Enabled)

Specifically for the constant voltage and performance installation markets, these NE-Series Multichannel amplifiers deliver an unprecedented degree of control and power from the most basic to some of the most technically advanced professional audio applications. These amps provide both 4 and 8-channel low impedance, 25V, 70V and 100V versions, and offer 250W of power per channel. Network Enabled amplifiers are simple to use and can be fully setup, controlled and monitored utilizing standard 10/100 Ethernet protocol and Protea NE Software. No outboard control modules are necessary. NE amplifiers are offered two ways; standard and "PE" (Protea Enabled) with Ashly's world-renowned Protea DSP.

The Digital Signal Processing (DSP) is handled by 2 SHARC 32-bit/96kHz processors. The extensive DSP options include High, Low and All-Pass filters (HPF/LPF/APF) with up to 48dB/octave slopes, delay, gating, ducking, compression/limiting, auto-leveling, graphic, parametric, notch and shelving equalization, gain adjustment and signal generators for calibration (incl. sine wave, white and pink noise). User presets can store and recover all global parameters of an amplifier's control surface and DSP sections. The Matrix Mixer enables any input to control any or all of the amplifier outputs through user customizable routing.

Each amplifier also offers DC voltage-controlled attenuators, which makes it very easy to control amp volume from remote locations. The NE-Series amplifiers also boast features such as the aforementioned Preset Recall, Remote Power Standby and data I/O ports for connecting accessories such as the WR-5 to control user selected parameters. Four-channel microphone preamp, AES/EBU, Cobranet and Ethersound module input options are also available. With the NE-Series amplifiers, you get the dependability, ultra-high sonic quality and rugged construction that consumers expect from the Ashly name.

Product Features:
  • 1000W Peak, 4-Channel Class D Power Amplifier
  • RMS Power Rating:
    • 8 ohms: 150 watts x 4 chan.
    • 4 ohms: 250 watts x 4 chan.
    • Bridged, 8 ohms: 500 watts x 2 chan.
  • Integrated Protea DSP allows graphic and/or parametric EQ, high and low pass filters, time delay, etc.
  • Rackmount design allows you to install the amplifier in any standard equipment rack
  • 10/100 Ethernet jack that allows you to control and monitor the amplifier's functions
  • Mixer section allows you to route an input to any and all outputs
  • Ethernet port allows you to store up to 35 DSP presets and subpresets
  • Stepped and calibrated attenuator knob for each input
  • DC Voltage control and remote power on/off
  • Built-In protection circuitry protects against overloads and overheating
  • Low-Z, 25V, 70V and 100V Models
  • Extensive DSP Available
  • Easy and intuitive user interface
  • Power switch can be disabled by software
  • 4-Step Signal Level and Clip LEDs
  • Power, standby, protect, network, temperature, and current LED indicators
  • Temperature sensitive variable-speed fans
  • Damping Factor: >250
  • Maximum Input Level: +21dBu
  • Input Sensitivity: 6.2dBu
  • Input Impedance: 20k ohms, balanced
  • Frequency Response: 20-20,000 Hz, (unweighted) ± 1dB
  • Signal-to-Noise Ratio: >105 dB
  • Dimensions: 15-1/2"D x 19"W x 3-1/2"H
  • Safety/Compliance: CE, FCC, RoHS
  • Optional CobraNet, EtherSound, AES/EBU, Mic Preamps
  • 1-year Manufacturer's warranty
Inputs & Outputs
  • 4 x Euroblock Inputs
  • 1 x AC Power Input
  • 1 x Input Expansion Slot
  • 4 x Euroblock Speaker Outputs
  • 1 x 10/100 Ethernet Port
  • 1 x Remote Level Control
  • 1 x Data I/O Ports
  • 1 x Preset Recall
  • 1 x Remote Power Standby

Power Specifications

Number of Channels
This is the number of channels that the professional amplifier is designed to power.
4 Channels
Continuous Power @ 8 ohm
This is the continuous (RMS) power output of the amplifier at an 8 ohm impedance.
150 watts x 4 channels
Continuous Power @ 4 ohm
This is the continuous (RMS) power output of the amplifier at an 4 ohm impedance.
250 watts x 4 channels
Continuous Power @ 8 ohm (Bridged)
This is the continuous (RMS) power output of the amplifier at a bridged 8 ohm impedance.
500 watts x 2 channels
Total Continuous Power
This is the total continuous power rating (RMS) that the amplifier is able to output.
1000 watts

Amplifier Specifications

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

D
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
>105 dB
Frequency Response
The range of frequencies the amplifier will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 20,000 Hz
Input Sensitivity
This is the input sensitivity of the amplifier.
6.2 dBu
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
Not specified by manufacturer
Voltage Gain
This is the voltage gain of the amplifier measured in decibels.
Not specified by manufacturer
Cooling Options
These are the different cooling systems used in the amplifier to keep it cool.
Cooling Fan
Inputs
These are the type of input connections that the amplifier has.
Euroblock
Outputs
These are the types of output connections that the amplifier has.
Euroblock

Physical Specifications

Height
The height of the item, measured from top to bottom, in inches.
3-1/2"
Width
The width of the item from left to right (side-to-side) measured in inches.
19"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
15-1/2"
Weight (Pounds)
This is the weight of the item in pounds (lbs).
21.00 lbs
Rackmount Spaces
This is the total number of spaces that the preamplifier will occupy when mounted on a rack.
2U

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

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Product Summary

Manufacturer

Model Number

NE4250PE

Weight

45.00lbs

Internal SKU

ne4250pe

Internal Product ID

32353

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Ashly NE4250PE