Ashly PEMA 4250.70 4-Channel Amplifier with Protea DSP & OPDante Option Card
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Ashly PEMA 4250.70 4-Channel Amplifier with Protea DSP and OPDante Option Card

SKU: ASP425070D MFR: PEMA4250.70D
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Key Features

  • Experience pristine audio with this 4-channel amplifier's advanced Protea DSP.
  • Get superior sound quality with the PEMA 4250.70's high-performance professional amplifier.
  • Customize your sound with versatile EQ, crossover, and limiter DSP audio processing tools.
  • Reliable performance: This Ashly amplifier features comprehensive thermal and current protection.
  • Seamless integration: Dante option card provides networked audio connectivity for installed amps.
  • Perfect for installations, this compact amplifier delivers powerful output in a small footprint.
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Ashly PEMA 4250 Specifications

Channels

Channels

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  • Channels

    4

Power

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  • Constant Voltage

    70V (per channel): 250W; 20Hz-20kHz, 1% THD, All Channels Driven

Line Current Draw

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  • Standby Mode

    190mA

  • Idle (no signal)

    540mA

  • Typical

    2.85A (1/8 Max Power, Pink Noise, All Channels Driven)

  • Maximum

    3.00A (1/3 Max Power, Sine Wave, All Channels Driven)

Thermal Dissipation

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  • Standby Mode

    46.7 BTU/hr

  • Idle (no signal)

    123 BTU/hr

  • Typical

    341 BTU/hr (1/8 Max power, pink noise, All Channels Driven)

  • Maximum

    378 BTU/hr(1/3 Max power, sine Wave, All Channels Driven)

Signal to Noise

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  • Signal to Noise

    >105dB (20Hz-20kHz, Unweighted)

General

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  • Input Sensitivity

    7.2dBu

  • Voltage Gain

    32dB

  • Damping Factor

    >250 (8 Ohm load, <1kHz)

  • Distortion

    <0.5% (SMPTE, typical)
    <0.5% (THD-N, typical, 8 Ohm, 10dB below rated power, 20Hz-20kHz)

  • Channel Separation

    -80dB (dB from full output, 1kHz)

  • Frequency Response

    20Hz-20kHz, +/-1dB

  • Mic/Line Input Impedance

    4.8k Ohms

  • Mic/Line Maximum Input Level

    +21dBu

  • Mic/Line Preamp Gain

    0, +20dB, +40dB, +60dB

  • Mic/Line Phantom Power

    +15V, switchable Channel 1-4, 5-8

  • Summed Mono

    3.16k Ohm (Input Impedance)
    +11dBu (Maximum Input Level)

  • Channel 1 TEL-PBX

    3.9k Ohm (Input Impedance)
    +21dBu (Maximum Input Level)

  • Preamp Output Maximum Level

    +8dBu

  • AUX Output Maximum Level

    +20dBu

Rear Panel

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  • Controls

    Ethernet 10/100, Channel 1 TEL-PBX Switch, Remote Standby, Preset Recall (4), Remote Level (8), Remote Data

  • Connectors (each channel)

    Input: Euroblock
    Output: Euroblock

LED Indicators

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  • Unit Status

    Power: Switch: On, Off (Blue)
    Standby: Standby, flashing (Yellow)
    Protect: On, Off (Red)
    Disable: On, Off (Yellow)
    COM: On, for Ethernet data or Device ID (Green)

  • Each Channel

    Signal level: Clip/Mute (Red); -6dB (Yellow) and -18dB, -12dB (Green)
    Bridge: Per Channel Pair (Green)
    Temp: Per Channel (Yellow)
    Current: Per Channel: Proportional to output (Green)

Connections

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  • Audio Connections

    1 Euro connector balanced input, selectable for Mic, Line or TEL-PBX
    7 Euro connector balanced inputs, software selectable for Mic or Line
    8 pairs of unbalanced, summed mono RCA connectors optimized for consumer line level (-10dBu) devices
    8 Euro connector Preamp/Aux outputs
    4 or 8 Euro connector speaker outputs
    OPDante Digital I/O options

Power Requirement

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  • AC Mains

    120VAC or 240VAC, +/-10% 50-60Hz

  • Power Cable Connector

    15A Edison, 3-Prong IEC

Environmental

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  • Environmental

    40 to 120 degree F (4 to 49 degree C) noncondensing

DSP: Input Source Selection

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  • Input Source Selection Options

    Analog, Auto (Net, AES3, Analog)

DSP: Brick Wall Limiter

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  • Threshold

    -20dBu to +20dBu

  • Ratio

    infinity

  • Attack

    0.2ms/dB to 50 ms/dB

  • Release

    5ms/dB to 1000ms/dB

DSP: Compressor

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  • Threshold

    -20dBu to +20dBu

  • Ratio

    1.2:1 to infinity

  • Attack

    0.2 to 50ms

  • Release

    5ms/dB to 1000ms/dB

  • Detector

    Peak/Average

  • Attenuation Bus

    2 available

  • Metering

    In, Out, Attenuation, Graphical

DSP: Autoleveler Controls

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  • Target Level

    -40dBu to +20dBu

  • Action

    Gentle, normal, aggressive, user-defined

  • Maximum Gain

    0dB to +22dB

  • Metering

    Input Level, Gain, Attenuation

  • Ratio

    1.2:1 to 10:1

  • Threshold Below Target

    -30dB to 0dB

  • Gain Increase/Decrease Rate

    5ms/dB to 1000ms/dB

  • Hold Time

    0-6 sec

DSP: Ambient Noise Compensation (Output)

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  • Max Gain

    -20dB to +20dB

  • Min/Base Gain

    -40dB to -1dB

  • Gain Change Rate

    0.2s/dB to 20s/dB

  • Link Group

    16 available

  • ANC Input Channel

    1-4 or 1-8

  • Noise Threshold

    -40dBu to +20dBu

  • Program/Ambient Gain Ratio

    0.3:1 to 3:1

  • Metering

    Input level, Attenuation, Average noise

DSP: Ducking

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  • Trigger Threshold

    -80dBu to +20 dBu

  • Ducking Release

    5ms/dB to 1000ms/dB

  • Ducking Depth

    0dB to -30dB, infinity

  • Enable Ducking at Matrix Mixer

    Yes

  • Metering

    Input

DSP: Gate

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  • Threshold

    -80dBu to +20dBu

  • Range

    off, 100dB to 0dB

  • Attack

    0.2ms/dB to 50 ms/dB

  • Release

    5ms/dB to 1000ms/dB

  • Metering

    Key Signal, Gate LED, Graphical

DSP: Advanced Gate Controls

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  • Key Engage Enable

    Yes

  • Key Frequency

    20Hz to 20kHz

  • Key Bandwidth

    0.016 to 3.995 Octave

DSP: Gain

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  • Gain (with/without VCA)

    -50dB to +12dB, off, polarity invert

  • Digital VCA Groups

    4 available

  • Remote RD8C Gain

    Enable per channel, 0dB to infinity

  • WR-5 (neWR-5) Remote Gain

    0 to -50dB, Mute

DSP: EQ (31-Band)

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  • Filter Type

    Constant Q or Proportional

  • Bandwidth

    0.499oct to 0.25oct

DSP: EQ (Parametric 2,4,6, or 10 Band)

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  • Frequency

    20-20kHz

  • Level

    -30dB to +15dB

  • Q Value

    0.016 to 3.995 Octave

DSP: EQ (Hi/Low Shelf 6/12 dB/oct)

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  • Frequency

    20Hz-20kHz

  • Level

    -15dB to +15dB

DSP: EQ (All Pass)

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  • Frequency

    20Hz-20kHz

DSP: EQ (Variable Q HP/LP)

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  • Frequency

    20Hz-20kHz

  • Q Value

    3.047 to 0.267

DSP: EQ (Notch/Bandpass)

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  • Frequency

    20Hz-20kHz

  • Q Value

    92.436 to 0.267

DSP: Feedback Suppressor (Input Only)

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  • Filters

    12

  • In/Out per filter

    Yes

  • Lock per filter and global lock

    Yes

  • Filter Modes

    Float, Restricted, Manual

  • Filter Type

    Notch, Parametric

  • Filter Frequency Range

    20Hz to 20kHz

  • Notch Filter

    Infinity

  • Parametric Filter

    +15dB to -30dB

  • Filter Bandwidth

    0.016 to 3.995 Octave

  • Detector Sensitivity

    5 levels

  • Float Time

    5 min to 24 hours

DSP: Crossover (2 /3/4 Way Crossover)

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  • Bessel & Butterworth Filters

    12/18/24/48 dB/oct

  • Linkwitz-Riley Filter

    12/24/48 dB/oct

  • Frequency

    Off, 20Hz-20KHz

DSP: Delay (@ 48kHz Sampling Rate)

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  • Speaker Delay

    0-21ms

  • Delay

    0-682ms

DSP: Delay (@ 96kHz Sampling Rate)

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  • Speaker Delay

    0-10.6ms

  • Delay

    0-341ms

DSP: Audio Metering Tool

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  • Range

    -60dBu to +20dBu

  • Increments

    1dB

  • Peak Hold Indicator

    Yes

DSP: Signal Generator Tool

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  • Signal Level

    Off, -50dBu to +20dBu

  • Sine Wave Frequency

    20Hz-12kHz

DSP: Matrix Mixer

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  • Gain (0.5dB increments)

    Off, -50dB to +12dB

  • Mute

    Per channel

  • Auto-Mixer Enabled

    Per channel

  • Global Auto-mixer Response

    0.01sec to 2sec

  • Enable Ducking at Mixer

    Yes

  • Ducking LED

    Per channel if enabled

  • Metering

    Level, auto-mixer level

DSP: Processors

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  • Input A/D, Output D/A

    24 bit

  • DSP Processors

    32-bit floating point

  • Sample Rates

    48kHz, 96kHz

  • Propagation Delay @ 48kHz:

    1.42ms

  • Propagation Delay @ 96kHz:

    0.71ms

Physical

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  • Dimensions (W x H x D)

    19 x 3.5 x 15.5" (483 x 89 x 394mm)

  • Weight

    18.5 lb (8.4kg)

About Ashly PEMA 4250

Explore the unparalleled power and sophistication of the PEMA 4250.70 4-Channel Amplifier, a revolutionary product in the realm of zone sound systems. This advanced amplifier, equipped with Protea DSP and an OPDante Option Card, is a testament to Ashly's commitment to high-quality, efficient, and durable audio equipment.

The PEMA 4250.70 is a compact powerhouse, combining the functionality of a robust, open-architecture DSP with the performance of an amplifier, all within a space-saving two-rack unit. This design not only reduces overall system cost but also enhances energy efficiency and simplifies both installation and programming.

The amplifier offers four and eight channel versions, delivering 125 and 250 Watts per channel. Experience the full 96kHz performance on 32-bit SHARC processors for utterly transparent audio, setting a new standard for sound system design.

The PEMA 4250.70 is equipped with advanced DSP algorithms such as ambient noise compensation, automatic feedback suppression, automatic mixer, and a full suite of filters, EQs, and delays. It also offers DSP control of the amplifier functionality, including bridge-mode operation, HPF settings for constant voltage system networks, and full-range remote-gain control capability.

This amplifier is ideal for small to mid-sized installations, featuring eight balanced input channels that are software selectable for mic or line levels, and eight pairs of summed-mono RCA connectors optimized for consumer line level devices.

Programming and deploying the PEMA 4250.70 is remarkably easy, thanks to the Protea ne Software on a PC platform. The hot-plug DSP placement allows users to insert any function into any channel block, even when running live audio.

The PEMA 4250.70 4-Channel Amplifier is more than just an audio device; it's a testament to Ashly's commitment to delivering powerful, high-quality, and reliable audio solutions. Experience the difference with the PEMA 4250.70 4-Channel Amplifier.

Ashly PEMA 4250 Features

  • OPDante network audio fully supported
  • 8-in x 8-out sophisticated matrix mixing
  • 8 built-in mic pre's
  • Gain sharing automatic microphone mixing (Automixer)
  • Automatic feedback suppression
  • Ambient noise compensation
  • Dedicated telephone/PBX input
  • Dual RCA and balanced euroblock inputs
  • Post DSP AUX line level outputs
  • Stereo summed to mono
  • Event scheduling (RTC)
  • Adjustable HP/LP filters
  • Built-in pink/white noise & sine wave generator
  • Full suite of Ashly Protea DSP
  • Hot-plug DSP placement
  • 96kHz or 48kHz sample rate
  • 32-Bit SHARC DSP
  • 24-Bit A/D-D/A audio resolution
  • 15V phantom power for mic inputs
  • Full control using Ashly software over 10/100 baseT Ethernet
  • Easy and intuitive user interface
  • Automatic DHCP network IP configuration
  • Euroblock connectors for preset recall, DC remote level control and serial data control
  • External control via Ashly standard wall remotes, Ashly Ethernet wall remotes or Ashly Remote iPad App
  • Level control via variable DC control voltage
  • Stand-By mode activation via contact closure
  • Multi-level Security
  • Safety/Compliance: TUV, CE, FCC, RoHS

Warranty Information

This product has a limited warranty of 60 months for parts and 60 months for labor.

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Key Features

  • Experience pristine audio with this 4-channel amplifier's advanced Protea DSP.
  • Get superior sound quality with the PEMA 4250.70's high-performance professional amplifier.
  • Customize your sound with versatile EQ, crossover, and limiter DSP audio processing tools.
  • Reliable performance: This Ashly amplifier features comprehensive thermal and current protection.
  • Seamless integration: Dante option card provides networked audio connectivity for installed amps.
  • Perfect for installations, this compact amplifier delivers powerful output in a small footprint.

What's in the box:

  • PEMA 4250.70 4-Channel Amplifier
  • Ashly 5 Year Limited Warranty