DIGIMAX FS 8-Channel Preamplifier with 24-bit/96k ADAT I/O (dual SMUX) User’s Manual Version 1.0 © 2006, PreSonus Audio Electronics, Incorporated. All rights reserved.
W A R R A N T Y PreSonus Limited Warranty PreSonus Audio Electronics Inc. warrants this product to be free of defects in material and workmanship for a period of one year from the date of original retail purchase. This warranty is enforceable only by the original retail purchaser. To be protected by this warranty, the purchaser must complete and return the enclosed warranty card within 14 days of purchase.
1 Overview 1.1 Introduction 4 1.2 Front Panel 5 1.3 Back Panel 6 2 Applications 2.1 Dynamic Microphones 8 2.2 Phantom Powered Microphones 8 2.3 Instrument Input 8 2.4 Connecting and Synchronization 8 2.5 Hook up diagrams 14 3 Technical 3.
OVERVIEW 1.1 Introduction Thank you for purchasing the PreSonus DigiMax FS™ 8-Channel Preamplifier with 24bit/96k ADAT I/O (dual SMUX). The DIGIMAX FS is an eight-channel microphone preamplifier, with 24-bit/96k ADAT dual SMUX I/O and word clock I/O.
OVERVIEW 1.2 Front Panel Class A Mic Pre. Each channel of your DigiMax FS contains a Class A discrete differential input amplifier, providing ultra low noise and wide gain control allowing the DigiMax FS user to boost desirable signal without increasing unwanted background noise. Neutrik Combo Connectors. Each channel of the DigiMax FS has a Mic/Line connector using the Neutrik Combo connector.
OVERVIEW 1.3 Back Panel Note that all inputs and outputs can be use simultaneously. Inserts. The DigiMax FS features insert points for each input. (RING=SEND) This allows any external processing to be done before the output stage on each channel independently. Direct Analog Output. The DigiMax FS has direct analog balanced outputs for each input channel. ADAT Output. This optical ADAT output sends eight channels of digital audio output.
OVERVIEW BNC In and Out. The BNC input allows an external clock to be connected to the DigiMax FS as a slave. The BNC output allows the DigiMax FS to connect to any BNC input as a master clock. Note that it is not recommended to split the BNC output to clock to multiple devices. It is recommended to daisy-chain multiple DigiMax FS’s or other digital devices. 75 ohm Terminate. This switch allows you to terminate the word clock signal when daisy-chaining multiple digital devices.
2 APPLICATIONS 2.1 Dynamic Microphones Dynamic microphones are characterized by lower output levels. Hence, more gain is needed to amplify a dynamic microphone to operating level. Do not use phantom power when using dynamic microphones. 2.2 Phantom Powered Microphones Phantom powered microphones such as condensors and some ribbon microphones require external power to pre-amplify the microphone acoustic pickup. These microphones typically have much higher output than dynamic microphones. .
APPLICATIONS SMUX SMUX, a newer generation of optical light pipe technology, supports sample rates up to 96k and utilizes two optical cables for channels 1-4 and 5-8, respectively. A set up where you are utilizing eight DigiMax FS preamplifiers and converting to digital optical output at 96K sample rate, connect two optical cables (preferably the same length and brand) from the SMUX outputs on the DigiMax FS (channels 1-4 and 5-8) to SMUX inputs on your digital audio workstation or digital mixer.
APPLICATIONS device to the first SMUX source device via BNC, and to sync the first SMUX source device to the DigiMax FS via BNC (or optical) and designate the DigiMax FS as word clock master. A third way would be to set all three devices to external word clock via BNC and to use a master word clock generator and distribution amplifier. ADAT Optical light pipe ADAT is an optical format that supports eight channels of digital audio over optical light pipe. Suported sample rates are 44.1 and 48k.
APPLICATIONS BNC Sync Many engineers prefer to take care of word clock and audio separately from each other, and you will find BNC cables used to deliver word clock in many quality studios and broadcast facilities worldwide. BNC cables are more rugged, lock into position, and can carry clock signals much farther distances than the standard optical cable. A BNC word clock cable is a 75ohm, shielded coaxial cable with standard ‘twist-lock’ BNC-type connections on each end.
APPLICATIONS Multiple Digital Devices In cases where multiple digital devices are in use, such as multiple DigiMax FS units in conjunction with a digital console, etc., it is important that all devices see the same word clock signal and that the word clock signal is not allowed to attenuate (drop in signal strength). There are two general ways to set up multiple device system. The first is to choose one of the devices in the system to be the word clock master and to slave the other devices to it via BNC.
APPLICATIONS control panel software application and/or your multi-channel recording application. Using the DigiMax FS with Pro Tools Below are instructions on setting up a Digi002 with ProTools LE Software (other ProTools systems with ADAT light pipe input are similar) 1.) Plug in the ADAT cable from the optical output of the DigiMax to the optical input of the Digi002. 2.) ProTools LE: enter the Setups menu > Hardware Setup. Ensure "RCA = S/PDIF, Optical = ADAT" is selected & Clock is set to "ADAT".
APPLICATIONS 2.
3 TECHNICAL 3.1 Technical Specifications Microphone Preamp (XLR Balanced) All measurements Microphone Input to Direct Output Frequency Response (+0,- 0.5dB) Frequency Response (+0/-3.0 dB) Input Impedance THD+N (unwtd, 1KHz @ +4dBu Output, Unity Gain) EIN (unwtd, 55dB Gain, 150 Ohm Input, 20Hz to 22KHz) S/N Ratio (Unity Gain, unwtd, Ref. = +4dBu, 20Hz to 22KHz) Common Mode Rejection Ratio (1KHz, 55dB Gain) Gain Control Range (+/-1dB) Maximum Input Level (Unity Gain, 1KHz @ 0.
TECHNICAL Digital Audio ADC Dynamic Range (Awtd, 48KHz Sample Rate) 107dB DAC Dynamic Range (Awtd, 48KHz Sample Rate) 110dB Bit Depth 24 Reference Level for 0dBFS +18dBu Digital Audio Output (2-Toslink™ Connectors, 8 channels) ADAT/SMUX Digital Audio Input (2-Toslink™ Connectors, 8 channels) ADAT/SMUX Internal Sample Frequency Selections (KHz) 44.1, 48, 88.2, 96 External Sample Frequency Inputs BNC, ADAT (SMUX) BNC Word Clock Output Level (75 Ohm load) 4.5V BNC Word Clock Input Level Range 3.0 to 5.
