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Total Harmonic Distortion (THD)
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<0.35% at full rated power, from 10 Hz to 20 kHz.
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I.M. Distortion
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<0.35% at 60 Hz and 7 kHz at 41, from -40 dB to full rated power.
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Crosstalk
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>80 dB (below rated power) 20 Hz to 1 kHz.
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DC Output Offset
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<2 mV
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Input Impedance (nominally balanced, nominally unbalanced) 10
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10 kOhm, 5 kOhm.
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Maximum Input Voltage
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± 10 V balanced or unbalanced
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Common Mode Rejection (CMR) (20Hz to 1kHz, typical)
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50 dB
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Load Impedance
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Dual 2, 4, 8, 16 Ohm
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Bridge Mono
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4, 8, 16 Ohm
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Gain Control (when enabled, switch selectable)
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Voltage gain adjustable from 20 to 0 or from 63 to 0
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Front Panel Controls and Indicators
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Fault Indicator
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Red LED, one per channel, flashes when the amplifier output channel has stopped operating. Usually this means that the amplifier must be serviced.
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Thermal Indicator
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Red LED, one per channel, illuminates when the channel has shut down, or is very near shutting down, due to thermal stress or overload.
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Ready Indicator
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Green LED, one per channel, illuminates when the channel is initialized and ready to produce output. Indicator is off when the channel is set to standby mode via the System Architect or IQ Control Software packages.
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Input Signal Indicator
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Green LED, one per channel, illuminates when the channel’s input signal is above –40 dBu (8 mVrms).
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Output Signal Indicator, -20 dB
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Green LED, one per channel, illuminates when the channel’s output signal is within 20 dB of clipping.
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Output Signal Indicator, –10 dB
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Green LED, one per channel, illuminates when the channel’s output signal is within 10 dB of clipping.
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Clip Indicator
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Red LED, one per channel, illuminates when the channel’s output signal reaches the onset of audible clipping. The Clip Indicator also will illuminate during Thermal Level Control (TLC) limiting or when the input compressor/limiter is protecting the amplifier from input overload.
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Cooling Vents
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Front-to-rear forced airflow
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Power Indicator
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Blue LED indicates AC power has been applied and is within the safe operating range of the power supply. The LED will flash when the AC line voltage is approximately 15% above or 25% below the nominal rated value.
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Data Indicator
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Feature not implemented.
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Bridge Mode Indicator
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Yellow LED illuminates when the rear panel Mode Switch is set to the “Bridge” Position.
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Power Switch
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Push-on / push-off switch.
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Back Panel Controls and Connectors
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Power Cord Connector
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Standard 15 amp IEC inlet. A circuit breaker located near the IEC power inlet protects the amplifier from excessive AC current draw.
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Reset Switch
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Resets the circuit breaker that protects the power supply.
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Ventilation Grille
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Air flow is front to back. Do not block the ventilation grilles.
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Input Panel
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Input module includes two balanced 3-pin removable barrier connectors. Input switch is described below. Behind the input panel are the Input Sensitivity Switches (not shown). One 3-position switch per channel selects various sensitivity settings.
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Mode Switch
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This two-position switch is used to select the amplifier’s mode of operation Dual or Bridge Mono. Dual mode is used for 2-8 ohm loads. Bridge mode is used for 4-16 ohm loads.
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“Y” Input Switch
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When set to ON, this switch parallels the input signals of the two channels, for use when the input signal is mono. The amplifier's channel outputs are still independent. The "Y" Input Switch also can be used to daisy-chain the signal to another amplifier.
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Input Connectors
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Balanced 3-pin terminal block connectors, one per channel.
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Channel Level Controls
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One 21-position detented rotary attenuator per channel, ranging from –100 dB to 0 dB gain.
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High-Pass Filter
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One 3-position switch per channel selects between OFF (FLAT), 35 Hz and 70 Hz 3rd order filters.
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Output Connectors
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One four-pole touch-proof terminal strip, Accepts up to 10 AWG terminal forks
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Output Cover (not shown)
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This covers the output connectors, protecting users from the connectors’ potentially high voltage. This cover is required for Class 2 wiring installations.
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Physical Characteristics
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Required AC Mains (+15%, -25%)
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120V/60Hz (230V/50Hz version available)
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Power Draw at Idle (120 VAC mains)
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35W (Standby Mode).
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Overall Group Delay < 120 usec.
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Operating Temperature
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10°C to 50°C (50°F to 122°F), Maximum Output Power de-rated above 30°C (86°F).)
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Humidity
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70% or less, non-condensing.
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Cooling
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Front-to-back airflow.
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Chassis
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The Amplifier is designed for stand-alone or rack-mounted operation. The Chassis is black aluminum with a powder coat finish. The unit occupies two EIA 19-inch-wide units.
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Dimensions
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Width
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19 inches (48.3 cm)
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Height
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3.5 inches (8.9 cm)
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Depth
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14.25 inches (36.2 cm)
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Net Weight
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27.0 lbs. (12.3 kgs.)
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Shipping Weight
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32.0 lbs. (14.5 kgs.)
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» 
