Focusrite ISA Two User Manual
  1. Manuals
  2. Brands
  3. Focusrite Manuals
  4. Transformer
  5. ISA TWO
  6. User manual

Focusrite ISA Two User Manual

Two channel classic transformer mic pre
Hide thumbs Also See for ISA Two:
Table of Contents

Advertisement

Quick Links

Download this manual
Version 2.0

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ISA Two and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Focusrite ISA Two

Summary of Contents for Focusrite ISA Two

  • Page 1 Version 2.0...

  • Page 2: Table Of Contents

    Switchable Impedance - In-Depth Explanation ............10 Pro Tools interfacing ....................... 12 Performance and Specifications ....................13 Notices ..........................15 Focusrite Warranty and Service ..................15 Registering Your Product ....................15 Customer Support and Unit Servicing ................15 Troubleshooting ......................15...

  • Page 3: About This User Guide

    Introduction Thank you for purchasing the Focusrite ISA Two. The ISA Two provides two of Focusrite’s prestigious transformer-based microphone preamps and can be used to record microphone, line-level or instrument sources. Microphones and line-level sources are connected via the rear panel, whilst instrument inputs can be plugged directly into the front panel jack sockets.

  • Page 4: Controls And Features

    ISA Two User Guide Controls and Features Front Panel Instrument Inputs Channel 1 Channel 2 LED meters Power switch Channel Controls Mic input impedance (Z In) selection Selects the high (30-60 dB) mic gain range on the Gain switch 10 dB stepped Mic/ Line Gain switch Mic: 0-30 / 30-60 Line: -20 +10...

  • Page 5: Mic Input Gain

    ISA Two User Guide Mic Input Gain The Gain switch adjusts the mic gain in 10 dB steps. Its range is either 0–30 dB or 30–60 dB when the 30–60 switch is pressed. An additional 0–20 dB of continuous gain adjustment is available using the Trim control.

  • Page 6: Insert

    ISA Two User Guide Insert Pressing Insert places the Insert Return signal into the channel path before the Output connector, allowing the inclusion of external effects units. The Insert Send is always available and is post the input Gain and Filter & Phase controls.

  • Page 7: Rear Panel

    Mic input Meter calibration trim pot AC Mains Inlet Standard IEC receptacle for AC mains. ISA Two features a ‘Universal’ PSU, enabling it to operate on any supply voltage between 100 and 240 V AC Channel Mic Inputs On latching XLR-3 female connectors, with switchable phantom power per channel.

  • Page 8: Physical Characteristics

    Physical Characteristics ISA Two dimensions are illustrated in the diagram above. ISA Two requires 1U of vertical rack space. Allow an additional 75mm of rack depth behind the unit to allow for cables. ISA Two weighs 3.7 kg / 8.12 lbs and for installations in a fixed environment (eg., a studio rack), the front-panel rack mountings* will provide adequate support.

  • Page 9: Appendices

    ISA Two User Guide Appendices Connector Pinouts Mic Input Connector: XLR-3 female Signal Screen Hot (+ve) Cold (-ve) Output Connector: XLR-3 male Line Input / Insert Send / Return Connector: Balanced (TRS) 1/4” Jack socket Signal 1 - Tip Hot (+ve)

  • Page 10: Preamp Input Impedance

    – even from average-performance microphones. Various microphone/ISA Two preamp impedance combinations can be tried to achieve the desired amount of colouration for the instrument or voice being recorded.
  • Page 11 ISA Two User Guide 2 kΩ. (The original ISA 110 preamp design followed this convention and has an input impedance of 1.4 kΩ at 1 kHz.) Input impedance settings greater than 2 kΩ tend to make the frequency-related variations of microphone outputs less significant than at low impedance settings.

  • Page 12: Pro Tools Interfacing

    ISA Two User Guide Pro Tools interfacing Figure 1. Analogue out to Pro Tools | HD...

  • Page 13: Performance And Specifications

    ISA Two User Guide Performance and Specifications Microphone Inputs All measurements were taken at minimum gain, Z In: medium unless otherwise stated. Measurements taken at the analogue outputs Gain Range 0 to 30 dB or 30 to 60 dB (with ‘30-60’ switch enabled), in 10 dB steps, plus 0 to 20 dB of continuous trim...
  • Page 14 ISA Two User Guide Crosstalk All measurements were taken at minimum gain, Z In: Medium Microphone Inputs -60 dB, 20 Hz – 20 kHz Line Inputs -80 dB, 20 Hz – 20 kHz Instrument Inputs -80 dB, 20 Hz – 20 kHz...

  • Page 15: Notices

    You can contact our Customer Support team: Email: focusriteprosupport@focusrite.com Phone (UK): +44 (0)1494 836 384 Phone (USA): +1 (310) 450 8494 Troubleshooting If you are experiencing problems with your ISA Two, we recommend you visit our Support Help Centre at: focusritepro.zendesk.com...

Table of Contents