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DriveRack™ User Manual
98
Appendix A
DriveRack
™
Specifications ( 482 DriveRack™)
Inputs
Number of Inputs: 4 (Inputs 3 or 4 can be selected as an RTA mic input)
Connectors: Female XLR
Type: Electronically balanced/RF filtered
Impedance: >40kΩ
Maximum Input Level: Hardware selectable for +30, +22, +14, dBu
Max input RTA Level: -10 dBu
CMRR: >40 dB typical, >55 dB at 1kHz
Input Gain Range RTA: 10 dB to 70 dB w/60 dB typical
Outputs
Number of Outputs: 8
Connectors: Male XLR
Type: Electronically balanced, RF filtered
Impedance: 120Ω
Output Transformers: Optional
Max Output Level: +25.5 dBu into 1kΩ
+22dBu into 600Ω
A/D Performance
Type: dbx Type IV™ Conversion System
Dynamic Range line: >112 dB unweighted, 115 dB A-weighted
Type IV™ dynamic range: 127 dB with transient material,
A-weighted, 22kHz BW
125 dB with transient material,
unweighted, 22kHz BW
119 dB typical with program material,
A-weighted, 22kHz BW
Sample Rate: 48kHz
A/D Wordlength: 24 bits
D/A Performance
Dynamic Range: 112 dB unweighted, 115 dB A-weighted
Sample Rate: 48kHz
D/A Wordlength: 24 bits
System Performance
Internal Wordlength: 48 bits
THD + Noise: 0.003% typical at +4dBu, 1kHz, 9dB input gain
Frequency Response: 20Hz- 20kHz, +/-0.5dB
Interchannel Crosstalk: <-85dB at 1kHz, 0dB input gain
Pre EQ
Type: One 31-band Graphic EQ per input channel, or
9 band Parametric EQ per input channel
RTA can be substituted for EQ in channels 3 and 4
Range: +/-12 dB range
Notch Filters
Number: 1-5 per input channel not to exceed 10 for all input channels
Pre Delay
Length: 680ms/channel
Crossover
Type: 1x2, 1x3, 1x4, 1x5, 1x6
2x3, 2x4, 2x5, 2x6, 2x7, 2x8, 3x4, 3x5, 3x6, 3x7, 3x8, 4x6, 4x8
Filter Type: Butterworth, Bessel, or Linkwitz-Riley
Slope: 6, 12, 18 or 24 dB/octave for Butterworth or Bessel filters
12, 24, 36 or 48 dB/octave for Linkwitz-Riley filters
Post EQ
Type: Parametric
Number: 4 EQ bands per output channel
Range: +/-15 dB range