dbx 266xs Compressor/Gate

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Description
The dbx 266xs is a two-channel compressor and expander/gate for live sound and the studio. It smooths uneven levels, adds sustain to guitars, fattens drums and brings vocals forward in a mix, running in stereo or as two independent mono channels.
OverEasy compression gives a smooth knee, and the AutoDynamic attack and release follow the program material. The dbx Auto mode sets attack and release automatically. Program-adaptive expander/gates use new timing algorithms for a smooth release. Separate LED displays for gain reduction, compressor threshold and gate threshold speed up setup, true RMS power summing links the channels in stereo, and each channel has a sidechain insert. Inputs and outputs are balanced XLR and 1/4 in. TRS.
Features
- Stereo or dual-mono operation
- OverEasy or hard-knee compression
- AutoDynamic program-dependent attack and release
- dbx Auto mode
- Program-adaptive expander/gates
- Separate LED displays for gain reduction, compression threshold and gate threshold
- True RMS power summing for stereo operation
- Sidechain insert on each channel
- Backlit switches
- Balanced inputs and outputs on 1/4 in. TRS and XLR connectors
Specifications
- Channels: 2
- Input Connectors: 1/4 in. TRS and female XLR, pin 2 hot
- Input Type: Electronically balanced/unbalanced, RF filtered
- Input Impedance: 40k ohms
- Maximum Input Level: More than +22 dBu, balanced or unbalanced
- Output Connectors: 1/4 in. TRS and male XLR, pin 2 hot
- Output Type: Impedance-balanced/unbalanced, RF filtered
- Output Impedance: 100 ohms balanced, 50 ohms unbalanced at the +4 dBu setting
- Maximum Output Level: More than +21 dBu into 2k ohms or greater; more than +18 dBm into 600 ohms
- Sidechain: 1/4 in. TRS, normalled; ring is send, tip is return
- Compressor Threshold: -40 to +20 dBu
- Compressor Knee: OverEasy or hard knee, selectable
- Compressor Ratio: 1:1 to infinity:1
- Attack and Release: Program-dependent AutoDynamic
- Expander/Gate Threshold: -60 to +15 dBu
- Expander/Gate Ratio: 1:1 to 4:1
- Expander/Gate Attack Time: Under 100 µs
- Frequency Response: 20 Hz to 20 kHz, +0/-0.5 dB
- Bandwidth: 0.35 Hz to 90 kHz, +0/-3 dB
- Noise: Below -93 dBu unweighted, 22 kHz bandwidth
- THD+Noise: Typically less than 0.2% with any amount of compression at 1 kHz
- Dynamic Range: More than 114 dB unweighted
- Interchannel Crosstalk: Below -95 dB, 20 Hz to 20 kHz
- CMRR: More than 40 dB, typically more than 55 dB at 1 kHz
- Stereo Coupling: True RMS Power Summing
- Power Consumption: 15 W maximum
- Operating Temperature: 32 to 113°F (0 to 45°C)
- Dimensions (H x D x W): 1.75 x 5.75 x 19 in. (4.45 x 14.6 x 48.26 cm)
- Weight: 4.84 lb (2.19 kg)














