Alesis Air Compressor Alesis Air Compressor User Manual

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Heavy distortion- If the +4/-10 switch is set to -10, try setting it to +4.
Gate opens but will not close again- This may be caused by improper
Threshold adjustment. Reset the gate as explained in Section 1.6,
under Threshold.
Gate "chatters"- Reduce Threshold level and/or increase Rate control
until a smooth transition occurs.
1.10 3630 SPECIFICATIONS
Dynamic Range: >118dB, "A" weighted
Signal to Noise Ratio: >100dB, "A" weighted
Headroom: +18dBu
Frequency Response: 10Hz to 30kHz, 0/-.5dB
Crosstalk: < -85dB @ 10kHz
Compression Threshold Range: -40 dBu to +20 dBu
Compression Ratio: 1:1 to ∞:1, selectable hard or soft compression knee
Peak Attack Time: 0.1 ms to 200 ms
Peak Mode Release Time: 50 ms to 3 seconds
RMS Average Mode Attack and Release Times: Program dependent
Gate Threshold Range: Continuously open (no gating) to -10 dBu
Gate Rate Time: 20 ms to 2 seconds
Impedance: OUTPUT: 470Ω, unbalanced SIDECHAIN: 2KΩ, unbalanced
Output Gain Control Range: -20 to +20 dB
Nominal Output "Zero" Level: Switchable, +4dBu or -10 dBV
Distortion: Less than 0.05% @ +4 dBu, 20Hz to 20kHz, "A" weighted with 6 dB
compression, any switch setting, nominal attack and release times
Indicators: 12 segment gain reduction LED display with -1 to -30 dB range, 12 segment
LED input/output (selectable) level display with -30 to +6 dB range, gate open/close
LEDs.
Switches: Stereo/dual mono link, bypass, peak/RMS mode, input/output monitor, knee
characteristics (hard/soft)
Input and Output Connectors: 1/4" mono phone jacks
Side Chain Connectors: 1/4" stereo phone jacks
Power Requirements: External 9 VAC transformer (supplied), UL approved
Size: Standard 1U rack mount
Note: +4 dBu = 1.23 Vrms -10dBV = 0.316 Vrms
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