Liminator 2
Liminator 2
Airfield Audio Liminator 2 is a 3U Class A dual-transformer stereo compressor from David Miller Designs.
Specifications
Format
| Product type | Class A dual-transformer stereo compressor |
|---|---|
| Rack format | 3U 19-inch rackmount |
| Gain reduction element | LD1 forward-biased optical resistive module |
Circuit and I/O
| Electronics | 1970s-style Class A electronics with opto attenuator compressor system |
|---|---|
| Input transformers | Switchable American Jensen and British-made Sowter input transformer modes |
| Connections | Transformer-balanced XLR inputs and outputs |
| Input impedance | 15 kOhm with Transformer 1; 1.2 kOhm with Transformer 2, balanced pin 2 hot |
| Output impedance | 75 ohm balanced, pin 2 hot |
Controls and Metering
| Attack | 5-position rotary: 5, 30, 60, 100 and 150 ms |
|---|---|
| Release | 5-position rotary: 0.1, 0.3, 0.6, 2 and 6 s |
| Threshold output | Continuously variable threshold and output gain |
| Metering | Analog VU meter switchable for input, output and gain reduction; +4/+14 dBu meter level switch on stereo version |
| Bypass link | Link switch and true relay bypass |
Audio Specifications
| Frequency response | +/-0.25 dB, 20 Hz-20 kHz |
|---|---|
| Maximum output | +32 dBu into 600 ohm |
| Gain reduction | 0-20 dB |
| Thd noise | Less than 0.02% THD at unity gain with +4 dBu input; 0.1% THD at 24 dBu input |
| Crosstalk | -89 dB at 1 kHz, +4 dBu signal level |
Power
| Power | 20 W, 115/230 VAC, 50/60 Hz; switchable 115/230 VAC operation |
|---|
Fit and constraints
Intended use
Constraints
To use it
Questions
Which connections, drivers, operating systems, and sample rates are supported by this exact revision?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
What cables, mounts, power supplies, or licenses are included?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Is the current retailer listing new stock, demo stock, open box, or special order?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Description
Airfield Audio Liminator 2 is a 3U Class A dual-transformer stereo compressor from David Miller Designs. Airfield describes it as a 1970s-style Class A compressor with a distortion-free opto attenuator system, switchable input transformer modes, transformer-balanced XLR input and output connections, link switch, true relay bypass, analog VU metering and +4/+14 dBu meter-level switching on the stereo version. The manufacturer lists American Jensen transformers for one input mode and British-made Sowter transformers for the other, five-position rotary switches for attack, release and ratio, and continuously variable threshold and output gain. Corroborated retailer specs list 15 kOhm or 1.2 kOhm input impedance depending on transformer, 75 ohm output impedance, +/-0.25 dB 20 Hz-20 kHz response, less than 0.02% THD at unity gain/+4 dBu input, +32 dBu maximum output, 0-20 dB gain reduction, 8 in depth and 18 lb weight.