Appendix

24 September 2024 15:55 Updated

Appendix 1 – Connector Pinouts

DB25 (AES59) Connector

Connectors are wired according to the AES59 Standard (also known as the TASCAM Analogue standard).

Connector type:

DB25 female

Applies to:

Analogue Line Input / Line Output
Mic Inputs (Red 8Pre only)

Pin	Signal
1	Channel 8
14	Channel 8
2	Ground
15	Channel 7
3	Channel 7
16	Ground
4	Channel 6
17	Channel 6
5	Ground
18	Channel 5
6	Channel 5
19	Ground
7	Channel 4
20	Channel 4
8	Ground
21	Channel 3
9	Channel 3
22	Ground
10	Channel 2
23	Channel 2
11	Ground
24	Channel 1
12	Channel 1
25	Ground
13	n/c

XLR Connectors

Connectors are wired according to the AES59 Standard (also known as the TASCAM Analogue standard).

Connector type:

XLR-3 female

Applies to:

Mic Inputs

Pin	Signal
1	Screen
2	Hot (+ve)
3	Cold (-ve)

1/4” Jack Connectors

Connector type:

Balanced socket

Applies to:

Monitor Outputs

Connector type:

Unbalanced socket

Applies to:

Instrument Inputs

Pin		Signal
1	Tip	Hot (+ve)
2	Ring	Cold (-ve)
3	Sleeve	Ground

Pro Tools Interface

Connector type:

Mini DigiLink receptacle

Applies to:

PRIMARY 1 and 2

BNC Connectors

Connector type:

75Ω BNC socket

Applies to:

WORD CLOCK IN/OUT
LOOP SYNC IN/OUT

Ethernet Connector

RJ45 Ethernet connector.

Connector type:

RJ-45 receptacle

Applies to:

Ethernet (Dante)

Pin	Cat 6 Core
1	White + Orange
2	Orange
3	White + Green
4	Blue
5	White + Blue
6	Green
7	White + Brown
8	Brown

Appendix 2 – System Diagrams

System Diagram: Red 4Pre

Numbers indicating channel capacities relate to a 44.1/48 kHz sample rate. Refer to the Channel I/O tables for the channel counts at higher sample rates.

System Diagram: Red 8Pre

Numbers indicating channel capacities relate to a 44.1/48 kHz sample rate. Refer to the Channel I/O tables for the channel counts at higher sample rates.

System Diagram: Red 8Line and Red 16Line

Numbers indicating channel capacities relate to a 44.1/48 kHz sample rate. Refer to the Channel I/O tables for the channel counts at higher sample rates.

Appendix 3 – I/O Channel Allocation

Red 4Pre – 44.1 / 48 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Note

The maximum physical I/O that can be connected is 58 in by 64 out.

Red 4Pre – 88.2 / 96 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 4Pre – 176.4 / 192 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 8Pre – 44.1 / 48 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 8Pre – 88.2 / 96 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 8Pre – 176.4 / 192 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 8Line – 44.1 / 48 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Note

The maximum physical I/O that can be connected is 58 in by 64 out.

Red 8Line – 88.2 / 96 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 8Line – 176.4 / 192 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 16Line – 44.1 / 48 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 16Line – 88.2 / 96 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Red 16Line – 176.4 / 192 kHz

This is the input/output default routing allocation. The input and output ordering can be configured using RedNet Control when the unit is connected to a computer over Thunderbolt.

Appendix 4 – Air Information

Air is the name we give to the sonic signature of the classic transformer ISA Preamp. Our customers first coined this name as a simple description of the effect the ISA preamp added to their sound recordings. The three most significant attributes of the transformer design that create the “Air” effect are:

Microphone interaction, created by the unique input impedance of the transformer coupling with the microphone output impedance.
Clarity, created by the low distortion and high linearity of the transformer and preamp design.
The frequency response tilt created by the transformer resonance emphasises the higher frequency content of the sound.

Engaging the Air switches the impedance of the preamp, and enables the “transformer resonance effect”, giving your microphone recordings the air and clarity of an ISA transformer-based mic pre-recording.