User guide

• Pro Tools HD-series system, running
Pro Tools TDM 5.3.3 or later on Windows
• Pro Tools|HD-series, Pro Tools|24 MIX-series,
or Pro Tools|24 system, running
Pro Tools TDM 5.3.1 or later on Macintosh
OS 9.x
• Digidesign-qualified Macintosh or Windows
computer
• 17" or larger color monitor; 1024x768 resolution
• Digidesign-qualified MIDI interface
Mic Preamps in Pro Tools can optionally be remote-
controlled by Digidesign control surfaces
(such as Control|24 and ProControl).
PRE Index | All FAQ Index
[26830]
What are the specifications for the Digidesign PRE?
PRE Specifications:
Gain Range 0 dB to +69 dB, in approximately
3 dB steps. With Pad enabled, –18 to +51 dB.
Input Impedance (Input Z): 1.5k ohm (low impedance);
15k ohm (mid impedance);
1.5M ohm (high impedance)
Frequency Response: ±0.1 dB; 20 Hz to 20 kHz,
@ +48 dB gain
Total Harmonic Distortion + Noise <0.0005%
@ 1 kHz, 0 dB gain @ 20 dB signal; <0.001%
(20 Hz to 20 kHz), 0 dB gain @ 0 dB signal
Equivalent Input Noise –128 dB @ 66 dB gain
(20 Hz to 20 kHz unweighted) 150 ohm
Phase Response <2.5 degrees (20 Hz to 20 kHz)
Dynamic Range 124 dB @ 0 dB gain
(20 Hz to 20 kHz unweighted)
Maximum Input Level +47 dBu Pad In, @ 1 kHz,
<0.1% THD
Maximum Output Level +29 dBu balanced,
@ 1 kHz, <0.1% THD
Common Mode Rejection Ratio <–75 dB
@ 1 kHz, 140 mVcm, +6 dB gain
Crosstalk <<90 dB, 20 Hz to 20 kHz
Phantom Power 48V ±1V
High-Pass Filter –3 dB @ 85 Hz 18 dB/octave
PRE Index | All FAQ Index
[26831]
Where can I find a Pinout diagram for the DB-25 connector on the PRE?
Page 41 of the PRE guide (Appendix B).
This document can be found online at:
http://www.digidesign.com/support/docs/PRE_Guide.pdf
PRE Index | All FAQ Index
[26825]
What are the main features of PRE?
- Eight high performance, discrete matched transistor hybrid microphone preamplification circuits.
- Remote Control with qualified Pro Tools TDM system and Digidesign control surfaces (such as Control 24 or Pro
Control).
- Maximum fidelity of PRE outputs signals, by keeping preamplification of low level signals close to the source.
- Analog outputs utilize industry standard CD-25 connectors for easy connection to Pro Tools audio interfaces or any