DF Series

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Professional audio processor DF8(4in-4out) / DF12(4in-8out)

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Audio
Input Impedance	20KΩ
Output Impedance	100Ω
A/D Dynamic Range	118dB
D/A Dynamic Range	118dB
Maximum Input Level	+20dBu
Maximum Output Level	+18dBu
Total Harmonic Distortion	≦0.003%(+4dBu 20Hz-20kHz)
Frequency Response	20Hz~40kHz
Crosstalk	≦-95dB
Signal To Noise Ratio	≧113dB
Noise Floor	≦-94dB
Common Mode Rejection Ratio	60dB
Number of analog input channels	4
Number of analog output channels	4
Rs485 Control Port	2
Network Control Port	1
DSP Processing
Signal generator	White noise/pink noise, level range: -30dBu~+10dBu
Input & Output Gain	-18 dB ~ +12 dB with 0.1dB step accuracy
noise gate	Threshold range: -80dBu~-45dBu Start time: 1ms~1000ms
noise gate	Release time: 1ms~1000ms
Dynamic Loudness Filter	Gain Range: 0dB-10dB Start Speed: Fast/Medium/Slow
Parametric Equalizer	Up to 31 optional types of PEQ for input channels, up to 8 optional types of PEQ for output channels
Optional types include	Bell filter, 1st-order high Shevf filter, 2nd-order high Shevf filter
	Variable Q high shelving filter, 1st-order low shelving filter, 2nd-order low shelving filter
	Variable Q Low Sheffer Filter, 1st-Order Low Pass Filter, 2nd-Order Low Pass Filter
	Variable Q low pass filter, 1st-order high pass filter, 2nd-order high pass filter
	Variable Q high pass filter, notch filter
	1st-order all-pass filter, 2nd-order all-pass filter with variable Q value
Center frequency	Adjustable with 1Hz step accuracy in the frequency band range of 20Hz~20kHz
Q value/bandwidth	The Q value range of the Bell filter is 0.4~128, the step is 0.01
	The Q value range of the shelving/high-pass/low-pass filter is 0.1~5.1, the step is 0.01
	Bandpass/notch filter Q value range: 4~104, step is 1
Equalizer gain range	-15dB～+15dB
IIR crossover filter	Butterworth slopes: 6/12/18/24/36/48dB per octave
	Bezier slope: 12/24dB per octave
	Linkwitz-Rayleigh slopes: 12/24/36/48dB per octave
	NXF horn filter with slopes of 40/45/50/50/55/60/65/70/75dB per octave
MIR linear filter	Linkwitz-Rayleigh: 24/48dB per octave; NXF: -40dB per octave
FIR crossover filter	Filter Type: High Pass/Low Pass/Band Pass/External Import
	Taps range: 256 ~ 512, slope range 21 ~ 120dB per octave
	Time window type: Rect / Sinc / Keiser / Hanning / Hamming / Blackman/Blackman-Harris/ Blackman-Nuttal / Nuttal/ Keiser-Bessel/Sine
RMS compressor	Start threshold range: -10dBu~ +20dBu; Compression ratio range: 2~32 : 1
	Soft and hard inflection point: 0~100% startup time: 0.1ms~1000ms
	Release time: 10ms~15000ms Gain compensation: maximum 12dB
Peak compressor	Threshold range: -10dBu~ +20dBu Startup time: 1ms~1000ms
Peak compressor	Release time: 10ms~3000ms
Hard limiter	Threshold range: -10dBu~ +18dBu
Delay	The adjustable delay time of each input channel + output channel is 452ms
Delay	Step accuracy 0.0104ms (10.4us)
FIR filter	Each input channel and output channel can import a 48kHz sampling rate 512-tap FIR filter
Summary
Preset quantity	32
Dimension	482x44x207mm 1RU
N.W/G.W	3.0 Kg / 3.5 Kg

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