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РЕМА Models 4125 8125 4250 8250
Continuous Average Power: Output Per Channel, Low Z Models, Stereo Mode, 20Hz–20kHz, 1%THD, All Channels Driven
4 Ohms 125W 125W 250W 250W
8 Ohms 75W 75W 150W 150W
Low Z Output: Bridge Mode, 20Hz–20kHz, 1% THD, All Channels Driven
8 Ohms 250W 250W 500W 500W
25V, 70V, 100V Constant Voltage Models: 20Hz–20kHz, 1% THD, All Channels Driven
25V (per channel) 125W* 125W* 250W 250W
70V (per channel) 125W 125W 250W 250W
100V (per channel) 125W 125W 250W 250W
Line Current Draw: 120V, All Channels Driven
Standby Mode 190mA 290mA 190mA 290mA
Idle (no signal) 590mA 565mA 540mA 565mA
1/8 Max Power, Pink Noise, All Channels Driven
Typical 1.70A 2.78A 2.85A 5.0A
1/3 Max Power, Sine Wave, All Channels Driven
Maximum 3.27A 5.78A 6.00A 11.0A
Thermal Dissipation: BTU/hr, All Channels Driven
Standby Mode 46,7 63,8 46,7 63,8
Idle (no signal) 123 187 123 187
1/8 Max Power, Pink Noise, All Channels Driven
Typical 232 444 341 700
1/3 Max Power, Sine Wave, All Channels Driven
Maximum 251 481 378 775
Signal to Noise
20Hz–20kHz, Unweighted >102dB >102dB >105dB >105dB
Front Panel LED Indicators
Unit Status
POWER Blue Switch: On, Of
STANDBY Yellow Standby, flashing
DISABLE Yellow On, Off
COM Green On, for Ethernet data or Device ID
Each Channel
  Red Clip/Mute
  Green -18dB, -12dB
BRIDGE Green Per Channel
TEMP Yellow Per Channel
CURRENT Green Per Channel: Proportional to output
Specifications Note: 0dBu = 0.775 VRMS
Input Sensitivity (Low Z models) 3.2dBu (4125/8125) 6.2dBu (4250/8250) 7.2dBu (70V/100V models)
Voltage Gain 26dB (Low Z models), 32dB (70V models) 35dB (100V models)
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 ch. 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
Environmental 40-120 deg. F, (4-49 deg, C) (noncondensing)
Rear Panel
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
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 (-10dBV nominal) devices
8 Euro connector Preamp/Aux outputs
4 or 8 Euro connector speaker outputs
CobraNet® and Dante® Digital I/O options
Remote Accessories
WR-1 2-Channel Level Control
WR-1.5 Level and Preset Recall
WR-2 Four-Position Switch
WR-5 Programmable Selector
neWR-5 Programmable Network Remote
FR-8 8-Channel Network Fader Remote
FR-16 16-Channel Network Fader Remote
RD/RW-8C Serial Data Fader Remote
Ashly Remote Remote Control Application for Apple® iPad®
Power Requirements
AC Mains 120VAC or 240VAC, ±10% 50–60Hz
Power Cable Connector 15A Edison, 3-Prong IEC
Weights and Dimensions
Dimensions 19” W x 3.50” H x 16.84” D (483mm x 89mm x 428mm)
Airflow IN through sides, OUT through front
Unit Weight 4125/4250: 23.5 lbs (10.7 kg) 8125/8250: 25 lbs (11.3 kg)
Shipping Weight 4125/4250: 30.9 lbs (14 kg) 8125/8250: 32.3 lbs (14.7 kg)
Environmental 40-120 deg. F, (4-49 deg, C) (noncondensing)

This listing is for pema 4250.10 Amplifier only. Use description below as a general reference.

PEMA™ sets a new industry benchmark for value-engineered zone sound systems. By seamlessly merging our powerful, open-architecture DSP functionality paired amplifier per- formance inside a two-rack space unit, PEMA lowers overall system cost, occupies less space, improves energy efficiency, and both speeds and simplifies system installation and programming. Four and eight amplifier channel versions are available at both 125 and 250 Watts per channel. Full 96kHz performance is available on 32-bit SHARC processors for utterly transparent audio.

PEMA changes the way consultants and integrators approach sound system design. With only the addition of input sources and output speakers, PEMA delivers an elegant solution with less cabling, less rack space, and less installation time, using proven DSP and amplifier technology that will awe clients with its simplicity, sophistication, and reliability.

In addition to DSP algorithms such as FIR filter capability, ambient noise compensation, advanced automatic feedback suppression, automatic mixer, and a full complement of filters, EQs, delays, and the like, PEMA offers DSP control of the amplifier functionality as well: selection of bridge-mode operation, HPF settings for constant voltage system networks, stereo-linking of channel pairs, MIC/LINE/TEL- PAGE functions on channel 1, full control of ducking priorities, and full-range remote-gain control capability.

PEMA’s I/O count and formats are ideal for small to mid-sized installations. Each variant has eight balanced input channels that are software selectable for mic or line levels. The first channel may also be set for a transformer isolated, TEL-PBX level. Additionally there are eight pairs of summed- mono RCA connectors optimized for consumer line level devices. Eight preamp auxiliary outputs allow integrators to route signals from the matrix mixer to anywhere the system requires.

As a member of the respected Protea™ DSP lineage, PEMA is remarkably easy to program and deploy. All set up is accomplished using standard 10/100 Ethernet protocol and our Protea™ ne Software on a PC platform. Hot-plug DSP placement allows users to insert any function into any channel block, even when running live audio. Automatic DHCP network IP configuration reduces network set up time. Lockable front panel controls and multi-level software security with password access guarantee a tamper- proof audio system.


  • CobraNet® and Dante® network audio fully supported
  • FIR Filter capable
  • 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: cTUVus, CE, FCC, RoHS

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