Red 1 500 Series Mic Pre User Guide
Contents
1. provides stepped gain selection switches for 48 V phantom power and phase and an illuminated VU meter Box Contents Red 1 500 Series module 2 of 4 40 hex head fixing screws 3 32 A F hex key for fixing screws 1 5 mm hex key for gain adjustment knob This User Guide A word about Power The Red 1 500 Series is supplied with DC power 16 V and 48 V by the rack into which it is plugged The rack s own Power Supply Unit PSU may be fitted with a power on off switch This should be used to apply power to the Red 1 500 Series module and any other modules in the rack Most 500 Series rack power supplies should have sufficient current capability for the rack to be fully loaded with Red 1 900 Series modules if wished However please check the specifications of your chosen 500 Series rack and the current requirements of Red 1 500 Series at the end of this manual to ensure compatibility If there is any doubt please consult the documentation supplied with the rack Note that the Red 1 has no internal fuses Front Panel ope ee TS flute oS Mounting holes secure the Red 1 500 Series in your rack using the hex head screws and hex key supplied GAIN Control a 12 position switch for setting gain Polarity Phase an illuminated push switch inverts the polarity of the signal Phantom Power an illuminated push switch provides 48 V phantom power at the input VU Meter an illuminated meter with VU2. Red 1 500 Series Mic Pre User Guide Focusrite FA0901 01 www focusrite com Dear Focusrite Customer Thank you for purchasing the Red 1 500 Series mic pre from Focusrite First announced in 1993 Focusrite s Red range of analogue audio processors rapidly gained legendary status with Red 1 becoming a much sought after mic pre found In top recording studios the world over Featuring the same circuit topology and components as the original transformer based mic pre design Red 1 500 Series offers the same performance as the original Focusrite Red microphone preamplifier in a new popular format the 500 Series or Lunchbox Red 1 500 Series features the characteristic red anodised front panel and machined aluminium gain switch as the original and staying true to form Red 1 500 Series is made in England Focusrite would like to encourage you to register your purchase of Red 1 500 Series at www focusrite com Registering will allow us to inform you of relevant news as well as any new additions to our product range We would also like to hear your feedback so please do contact us through the website Yours sincerely Focusrite Audio Engineering Register your product here http www focusrite com register RoHS Notice Focusrite Audio Engineering Limited has conformed and this product conforms where applicable to the European Union s Directive 2002 95 EC on Restrictions of Hazardous Substances RoHS as well as the fol
3. lowing sections of California law which refer to RoHS namely sections 25214 10 29214 10 2 and 58012 Health and Safety Code Section 42475 2 Public Resources Code Introduction This Focusrite Red 1 500 Series is a high quality single channel microphone preamplifier in 5 25 x 1 9 modular format designed to fit any of the popular 500 Series portable rack housings The Red 1 500 Series is fully analogue using circuitry identical to that employed in the familiar Focusrite Red 1 four channel mic pre which was Itself based on the now classic ISA designs of the 1980s The design uses the Lundahl LL1538 input transformer to provide excellent common mode rejection and 20 dB of passive gain coupled to a very low noise amplifier with Focusrite s signature extended bandwidth and high overload margin The output circuit is also transformer coupled which minimises system interconnection problems and provides a fully balanced source The circuit can drive very long cable runs several kilometres if necessary without significant signal degradation making the Red 1 ideal for location recording Intended to provide a traditional analogue front end to any modern digital recording system the module will give outstanding audio performance when used with any microphone You will find it particularly effective for recording vocals or acoustic sources such as piano or stringed instruments The Red 1 500 Series modules front panel
4. n you are confident that the module is correctly inserted and secured Recording with the Red 1 500 Series mic preamp Plug your microphone into the appropriate input connector on the rack and connect the corresponding output to the input of your recording system The Red 1 500 Series is a mic preamplifier this means that its output Is at line level and it should only be connected an input suitable for line level signals Use a balanced connection wherever possible but if you only have unbalanced inputs connect the cable s cold wire to the cable screen at the output of the 500 Series rack If using a microphone which requires phantom power e g a condenser type press the 48 V button on the Red 1 500 Series Only enable phantom power when you are confident that the connected equipment requires it Adjusting the gain The gain control is a rotary switch with 12 positions The lowest position is a 6dB pad and the mic signal will be attenuated by 6 dB at this setting Each clockwise step of the control increases the mic pre gain by 6 dB up to a maximum of 60 dB The nominal output level of the Red 1 500 Series module is 4 dBu when the meter indicates 0 VU The meter may be recalibrated so that 0 VU 10 dBu by setting the slide switch at the rear of the module to its up position In this case the meter will now under read compared to the down setting the output signal level will be 6 dB higher for the same meter indication Please n
5. ontact the distributor regarding a warranty issue or an out of warranty chargeable repair please visit www focusrite com distributors The distributor will then advise you of the appropriate procedure for resolving the warranty issue In every case it will be necessary to provide a copy of the original invoice or store receipt to the distributor In the event that you are unable to provide proof of purchase directly then you should contact the reseller from whom you purchased the product and attempt to obtain proof of purchase from them Please do note that if you purchase a Focusrite product outside your country of residence or business you will not be entitled to ask your local Focusrite distributor to honour this limited warranty although you may request an out of warranty chargeable repair 12
6. ote that the signal levels and corresponding meter readings referenced here are measured with sinusoidal test signals Depending on the source material the peak level of the same signal as displayed ina DAW for example could be significantly different This is usual behaviour for an average level responding VU meter Stereo recording Red 1 500 Series modules are particularly suitable for stereo recording because of the very accurate gain matching between modules and hence stereo channels When recording with a matched pair of microphones or a dedicated stereo microphone use two Red 1 500 Series modules and set the gain controls on each to the same position Technical Data Edge connector pinout CONNECTION Chassis ground ee Audio Out hot ve ES Audio Input cold ve 7 6 CM 8 ES 10 Audio Input hot ave EE 12 14 Power 16V 15 Phantom Power 48 V Note Pins 3 5 6 7 9 amp 11 are unused by Red 1 500 Series 10 11 12 a Ponev Oooo O 15 10 Specifications Maximum Qutput Maximum Input Frequency Response Deviation at 30dB gain 20Hz 20kHz Bandwidth 3dB at 30dB gain Range at 60dB gain 0 5dB Bandwidth 3dB at 60dB gain Output Noise Harmonic Distortion Third Harmonic 30dB gain 30dBu input Second Harmonic THD N 20 kHz bandwidth CMRR 24dB gain 4dBu input 1kHz Troubleshooting For all troubleshooting queries please visit the Focusrite Ans
7. scaling indicates the module s output signal level Also see item 6 on the rear panel Rear Panel 6 VU Meter Attenuator slide switch inserts a 6 dB pad in the meter feed When down the VU Meter scaling is normal 0 VU 4 dBu When up the VU Meter under reads by 6 dB 7 Edge Connector 15 Pin edge connector makes all power and audio connections to the 500 Series rack Installing Red 1 500 Series While installing the Red 1 500 Series into a rack is straightforward a few precautions should be observed ALWAYS switch the rack power supply off before inserting the Red 1 500 Series module Attempting to insert the module while the rack is powered may damage the Red 1 500 Series module and or the rack itself The rack must also be switched off before the Red 1 500 Series module Is removed Ensure that the module is the right way up and that the rear edge connector is aligned with the corresponding socket in the rack Firmly push on the top and bottom of the front panel until the edge connector clicks into place and the fixing screw holes are aligned with the tapped holes in the rack DO NOT apply pressure to the face of the VU meter or other front panel components as this can cause damage Secure the module into the rack the supplied mounting screws will be the correct size for most rack units but please check the rack user guide and tighten with the larger of the two supplied hex keys Only turn the rack power on whe
8. werbase at www focusrite com answerbase where you will find articles covering numerous troubleshooting examples Copyright and Legal Notices Focusrite is a registered trade mark and Red 1 is a trade mark of Focusrite Audio Engineering Limited All other trade marks and trade names are the property of their respective owners 2013 Focusrite Audio Engineering Limited All rights reserved Warranty and Service All Focusrite products are built to the highest standards and should provide reliable performance for many years subject to reasonable care use transportation and storage Very many of the products returned under warranty are found not to exhibit any fault at all To avoid unnecessary inconvenience to you In terms of returning the product please contact Focusrite support In the event of a Manufacturing Defect becoming evident in a product within 12 months from the date of the original purchase Focusrite will ensure that the product is repaired or replaced free of charge A Manufacturing Defect is defined as a defect in the performance of the product as described and published by Focusrite A Manufacturing Defect does not include damage caused by post purchase transportation storage or careless handling nor damage caused by misuse Whilst this warranty is provided by Focusrite the warranty obligations are fulfilled by the distributor responsible for the country in which you purchased the product In the event that you need to c
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