Author Topic: digidesign 442 i/o (1991) Digidesign quad interface  (Read 1196 times)

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Offline chrisNova777

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digidesign 442 i/o (1991) Digidesign quad interface
« on: April 29, 2015, 06:24:31 AM »
 The 442 is only compatible with NuBus Macs ONLY

also called a "Digidesign quad interface"
compatible with nubus macintosh such as 7100/8100 only with pt3.2

The OS can be 7.6.1 with PT 3.2 (.1 or .2) and things work pretty stable. There is no higher Protool's version that will work with the 442



« Last Edit: February 24, 2018, 01:48:31 PM by chrisNova777 »

Offline chrisNova777

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Offline chrisNova777

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Re: digidesign 442 i/o (1991)
« Reply #2 on: December 24, 2017, 12:52:25 PM »
http://macos9lives.com/smforum/index.php/topic,4030.0.html

Quote
looking for pro tools v3.1 + v3.2
the highest version compatible to work on a vintage mac rig consisting of powermac 7100/8100 + digidesign 442 interface, running os 7.6.1

does anyone have a copy of these specific versions?

Offline chrisNova777

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Re: digidesign 442 i/o (1991) Digidesign quad interface
« Reply #3 on: December 26, 2017, 04:35:26 PM »
Quote
to use two or more 442modules will need a SysAxe Card - system accelerator (scsi controller who manager scsi disk for ProTools).
SysAxe must to be installed in to the fisrt slot and just "see" 2gb partition size

This setup works fine on quadra 950 and you will load up to 16 tracks !

compatibility:
ProTools software 3.2 w/ DAE/DSI version 2.95 and 2.96
cubase audio xt 3.x
digital performer 2.1
studio vision dsp 4.2.3
logic audio 2.5.3

I install ProTools "free" 3.4 w/ DAE/DSI 3.02 and works fine too ! then I pass thru this information to this site:
http://www.oakbog.com/PT3NuBus.html

obs: hook up the word clock ports !
wordclock out (first 442) to the workclock in (secund 442)
workclock out (second 422) to the workclock in (third 442)
word clok out (third 422) to the wordclock in of the last 442(fourth)

if you have difficulty to find a Sys AXe card to buy , contact me.

good luck!
Fabio

http://duc.avid.com/showthread.php?t=132628
« Last Edit: December 26, 2017, 04:57:30 PM by chrisNova777 »

Offline chrisNova777

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Re: digidesign 442 i/o (1991) Digidesign quad interface
« Reply #4 on: February 24, 2018, 01:40:48 PM »
connects via the nubus "pro tools audio card" (1991)


Quote
http://answerbase.digidesign.com/detail.cfm?DID=54
Specifications for 442 Audio Interface.
The 442 I/O (MH031, 4x4) is the audio interface used in the original Pro Tools system (sometimes called Pro Tools II). It can also be used with an Audio Card (SA4) in a PTIII system to provide 4 additional inputs/outputs. (Requires a TDM single piggyback. Doesn't add DSP or voices.)
Analog Input/Output: Active Balanced XLR (pin 2 hot); +4dB level.
Analog I/O Impedance: Differential 200kohms, single ended 100kohms (input); 22ohms per leg (output).
Digital I/O: 16-bit, Active transformerless inputs (AES balanced, S/PDIF unbalanced), transformer coupled outputs (both).
AES pinout: Pin 1 gnd, pins 2 & 3 balanced signal (not polarized); impedance 110ohms.
External Sync: 256x sample rate (Super Clock) in/out, about 3 Vpp, BNC connectors.
NuBus Card Connector: 50-pin, SCSI2-type female.
Sample Rates: 44.1k or 48k.
Analog-to-Digital Converters: 1 Bit, Delta-Sigma, 64x Oversampling, 16-bit output.
Digital-to-Analog Converters: 18-bit, 8x Oversampling.
Operating Level: +4 dBu nominal (factory calibrated at 14dB or 18dB headroom).
Maximum Levels: +26dBu (input), +24 dbu (output).
Frequency Response: 20Hz - 20kHz +/-1db.
Signal-to-Noise Ratio: > 93 dB A/D, > 108 dB D/A (A Weighted).
THD + N: .005% A/D, .003% D/A.
Power requirements: 100, 120, 220, 240 VAC, 10-60Hz, 16 watts, auto-switching. The power supply is a Skynet model SNP 3034
Dimensions: 1U external rack mount device; 19" x 8.5" x 1.75".
ID:54 Created:12/03/1993

http://answerbase.digidesign.com/detail.cfm?DID=4836
DAE error - 9024 when launching Pro Tools 4.0 with a 442 interface attached.
DAE/DSI 2.95 are the last versions that support the 442 interface.
Pro Tools 3.2 is the last version that supports the 442 interface.
ID:4836 Created:01/18/2001

http://answerbase.digidesign.com/detail.cfm?DID=1077
Release dates and versions for Pro Tools.
ProDECK (recording/mixing) and ProEDIT (editing) were the original software applications that ran on the Pro Tools (442) hardware. The audio engines were built into these apps, there was no DAE before Pro Tools 2.0 software.

http://answerbase.digidesign.com/detail.cfm?DID=1082
Release dates and versions for Sound Designer II (SDII).
Sound Designer II (SDII) is an application that provides mono/stereo recording, editng and DSP. It requires an SAII, SAII/2, AMII, AMIII, 442, PT Project, or Disk I/O card (with appropriate peripheral).

http://answerbase.digidesign.com/detail.cfm?DID=53
Specifications for 442 Audio Card.
The 442 Audio Card (MH030, SA4, Pro Tools Audio Card) is the NuBus card used in the original Pro Tools system. It supports the 442 I/O or ProMaster 20 Interface.
Output: 4 channels of phase synchronous 16 bit audio.
DSP: 2 Motorola 56001 processors.
Connector: SCSI2 (50 pin).
NuBus power consumption: 9.55 watts.
DSP Clock Speed: 32mHz
Current Xilinx chip (U45): rev R03
ID:53 Created:12/03/1993

http://duc.avid.com/archive/index.php/t-10247.html