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Page - 4 Operator Manual – PE Series Amplifiers
Copyright© 2005 – Ashly Audio Inc.
The PE Series
PE-Series (Protea Enabled) amplifiers are high-power, high-efficiency, lightweight
amplifiers incorporating the latest amplifier technologies. Each amplifier can be controlled
and monitored through the Ethernet port using Protea
NE
Software™ included on the CD that
came with the amplifier (visit Ashly.com to check for software updates). Protea
NE
gives users
access to many features, including: input attenuation, channel mute, channel polarity, input
level, output voltage, output current, clipping, temperature, and monitoring for power on/off.
The series provides a wide power range of 400 to 1900 watts per channel at 4 ohms (20Hz-
20kHz, 0.05% THD). All models will drive 2, 4 or 8 ohm loads. Each models is 2RU,
weighs 20 pounds and utilizes a state-of-the-art, efficient, high speed switched mode power
supply. DC voltage control of the input level and remote power on/off are among the many
standard features.
PE-Series Power Ratings
Stereo Mono Bridged Parallel-Mono
Model 8 4 8 2
3800 1,100W 1,900W 3,800W 3,800W
3000 9,00W 1,500W 3,000W 3,000W
2400 7,00W 1,200W 2,400W 2,400W
1800 5,00W 900W 1,800W 1,800W
1200 3,00W 600W 1,200W 1,300W
800 200W 400W 800W 800W
Input connections are via XLR/TRS Neutrik Combo, and 6-pin Euroblock connectors. XLR
male connectors are also provided for looping to additional amplifiers.
Output connectors are locking Neutrik Speakon on all models (models 800 & 1200 also have
screw terminal strips with safety covers). Switches on the rear panel include: selectable High
Pass Filters, Clip Limiter, Ground Lift, Gain and Operation Mode.
Protection
PE-Series Amplifiers come standard with several protection circuits:
Clip Limiter – On overdrive the clip detection triggers the Attack-Release
Circuit delivering control voltage for gain reduction.
SOA Protection - If the power transistors leave their Safe Operation Area, the
SOA-protection switches back the current rail of the respective channel.
DC Protection - Each output is monitored for DC voltage. If thresholds are
exceeded, the corresponding channel will be muted. Minor DC occurrences
(once resolved) will return the amplifier to normal. If the DC condition is
severe the amplifier will enter standby.
DC Servo - PE-Series has a DC Servo to prevent DC Offset at the output.
Over Current Protection - Is controlled in the output stage.
Thermal Protection - When the internal temperature is below 40°C the fan
runs at its slowest speed. Above 40°C the speed is increased until it reaches its
maximum value. If the temperature exceeds 85°C, the input on that channel is
reduced. If the temperature exceeds 100°C, the power supply is switched off.
Mains Protections – protection within the power supply includes: Inrush
Current Limitation, Mains Over Voltage Detection, Mains Failure Detection,
and Fuse Protection
Important Safety
Instructions – 2
Introduction - 3
The PE Series - 4
Protection
Physical Description - 5
Installation - 6
Operation - 8
Troubleshooting - 9
Spec Table - 10
Measurements - 11
Dimensions - 12
Warranty - 13