Ashly Protea NE4250 User manual

Features:
• Four Channel Amplifier
• Ethernet control Is standard
• Low-Z, 25V, 70V and 100V Models
• Extensive DSP Available
• Easy and intuitive user interface
• Extensive protection circuitry
• Safety/Compliance: cTUVus/FCC,
CE (pending), RoHS
Front panel:
• Level attenuators for each channel
• Power switch can be disabled by
software
• 4-Step Signal Level and Clip LEDs
Rear panel:
• 10/100 Ethernet port
• Euroblock inputs
• Euroblock outputs
• Remote level control
• Preset recall
• Remote power turn-on/off
• Data in and out ports
NE Series specifications
Connecting and controlling an amplifier for networked systems has now
been simplified with Ashly’s NE Series amplifiers. Network Enabled (NE) amplifi-
ers offer ease of use, setup and control using standard 10/100 Ethernet proto-
col and Protea NE Software. No special outboard control units are needed.
Four, four-channel models with output power at 250W are available to fill a
wide variety of low impedance, 25V, 70V and 100V performance installation
or constant voltage applications. NE Series amplifiers are offered two ways;
standard input with euroblock connectors and “pe” (Protea Enabled) with
euroblock input connectors and world renowned Protea DSP signal process-
ing.
The DSP signal processing library is extensive and utilizes two SHARC 32-bit/
96kHz processors. Processing blocks include Graphic, Parametric, Notch and
Shelving Equalization, High-, Low- and All-Pass Filters (HPF/LPF/APF) with up to
48dB/Octave slopes, Delay, Compressor/Limiter, Gate, Ducking, Auto-leveler,
Gain and Signal Generators (sinewave, white and pink noise). A full Matrix
Mixer with assignable routing allows any input to drive any or all amplifier out-
puts. Presets can be used to store and retrieve global parameters of an entire
amplifier’s control surface and DSP section.
Additionally, each amplifier also provides DC voltage control of the attenu-
ators which makes it a snap to control volume from remote locations, preset
recall, Remote Power Standby and data in and out ports for connecting
accessories like the WR-5 to control user selected parameters. There are LED
indicators for power, standby, protect, network communications and each
channel has a four-step signal meter, bridge mono, temperature and current
indicators.
Four-channel Mic-pre, AES/EBU, and Cobranet modules will be available as
options. Eight-channel NE series amplifiers are also available
NE Series Four-Channel Amplifiers
Professional Power Amplifiers
Watts per channel
Model 8 ohms 4 ohms 25V/70V/100V
ne4250 150 250 NR
ne4250.25 NR NR 250
ne4250.75 NR NR 250
ne4250.10 NR NR 250
ne4250 | ne4250pe | ne4250.25 | ne4250.25pe | ne4250.70 | ne4250.70pe | ne4250.10 | ne4250.10pe |
Accessories
WR-1 2-ch Level Control
WR-2 Four Position Switch
WR-5 Programmable Selector
RD/RW8 8-ch Level Control
Input Options
Four-channel Mic pre
AES/EBU
CobraNet

SRA Series specifications
ne4250 ne4250.25 ne4250.70 ne4250.10
ne4250pe ne4250.25pe ne4250.70pe ne4250.10pe
NE Series specifications
Ashly Audio, Inc.
847 Holt Road
Webster, New York USA 14580-9103
P: 800-828-6308, [phone]
F: [phone]
www.ashly.com [email protected]
Specifications subject to change without prior notice.
Latest information available at www.ashly.com.
© 2008 Ashly Audio, Inc.
Printed in U.S.A. 03/08
Rated Power 8 ohms (per channel) 150W NR NR NR
Rated Power 4 ohms (per channel) 250W NR NR NR
Rated Power 8 ohms (Bridged) 500W NR NR NR
Rated Power 25V, 70V, 100V (per channel) NR 250W 250W 250W
S/N (20 Hz-20 kHz, unweighted) >98dB >98dB >98dB >98dB
1/8th Output (Pink Noise) 31.25W 31.25W 31.25W 31.25W
1/8th Draw (Pink Noise) 200W 200W 200W 200W
1/8th Current (Pink Noise) 2.7A 2.7A 2.7A 2.7A
Idle Power (Pink Noise) 30W 30W 30W 30W
Idle Current (Pink Noise) 0.4A 0.4A 0.4A 0.4A
Weight: Net
Shipping
21.0 lbs. (9.53kg)
26.0 lbs. (11.79kg)
21.0 lbs. (9.53kg).
26.0 lbs. (11.79kg)
21.0 lbs. (9.53kg).
26.0 lbs. (11.79kg)
21.0 lbs. (9.53kg).
26.0 lbs. (11.79kg)
Frequency Response (8 ohms) 20 Hz - 20k Hz, (unweighted) ±1dB
Input Impedance 20k ohms, balanced
Input Sensitivity 6.2dBu
Maximum Input Level +21dBu
Internal HPF ( 25V, 70V, 100V models) (contolled by software) 80Hz (12dB/oct), 400Hz (6dB/oct), and OFF
Damping Factor (8 ohms) > 250
Cooling Temperature dependent speed-controlled fan (Front in, Side out)
Output Circuitry Class D
Connectors (each channel) Input - Euroblock
Output - Euroblock
Front Controls AC Power Switch, Individual input attenuators
Front indicators (LED color) Power (Blue), Standby (Yellow), Protect (Red), Disable (Yellow), Com (Green), Bridge (Green), Signal Level -18dB,
-12dB (Green), -6dB (Yellow), Clip (Red), Temp (Yellow)
Rear Controls Ethernet 10/100, Channel bridge switch (Low-Z only), Remote standby, Preset recall (4), Remote Level (4),
Remote Data
Amplifier and Load Protection Output Overcurent, DC Output, Main Supply Rail Overvoltage, Chassis Temperature, Inrush Limiting, Mains
Fuse
Cordset 15A Edison 3-Prong IEC
Dimensions Height: 3.50" (88.9mm) 2RU
Width: 19” (483 mm)
Depth: 15.5” (394mm)
Environmental 40-120deg. F, (4-49deg. C) noncondensing
Notes:
0dBu = 0.775 VRMS
Power ratings are per channel at 1% THD+N