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DATA SHEET
General Description
The Rane MS 1 Mic Stage preamplifier provides the answer when you need just one microphone input in an otherwise line-level world. Give us a call to go from either a dynamic, condenser or electret microphone to a line level input with a minimum of noise, distortion, cost and hassle. The MS 1 provides 48 V switchable Phantom Power with indicator LED, continuous rotary Gain trim between 21.5 dB and 60 dB, overload LED, and XLR balanced Input & Output connectors. A Phase Invert switch and high-current crosscoupled output line drivers round out the features. The MS 1 utilizes one of the finest ultra low noise amplifier designs available. Featuring a true differential input with high common-mode rejection, use of the MS 1 guarantees performance usually found only in mixing consoles costing thousands of times as much. Of course, for all of that extra money you receive a proportional increase in KPSI (knobs per square inch).

MS 1
MICROPHONE STAGE

Features · Gain Control with Overload Indicator · Phase Invert Switch · Switchable 48V Phantom Power · Ultra Low Noise Design
Parameter Input Impedance Gain Range Phantom Power Max Input Level Equivalent Input Noise Signal-To-Noise Ratio Frequency Response THD+Noise IM Distortion (SMPTE) Slew Rate Max Output Level Output Impedance Output Cable Length Unit: Agency Listing ..........120 VAC model ..........230 VAC model Power Supply: Agency Listing ..........120 VAC model ..........230 VAC model ..........100 VAC model Power Supply Input Max Current Consumption Unit Size ..........Weight Shipping Size ..........Weight

· True Differential Input · Cross-Coupled Line Driver · UL/CSA/CE and 100/120/230 VAC Remote Power Supply
Limit 1% 1.5 4% 1 2 typ 0.1 .001 .002 1 1 1% typ Units W dB VDC dBu dBu dB dB % % V/µs dBu W Conditions/Comments Balanced 500 + 500 DIN 45596 & IEC 268-15 21.5/60 dB gain 20k BW, 60/21.5 dB gain, Rs=150 ohms 20k BW, 21.5/60dB gain -3 dB @ 130/90 kHz, 21.5/60 dB gain +20 dBu, 20-20 kHz, 21.5/60 dB gain 60 Hz/7 kHz, 4:1, +20 dBu Fully symmetrical Balanced out, 600 ohms Balanced Belden 8451 or equivalent National Electrical Code Exempt Class 2 equipment EMC directive 89/336/EEC Exempt per Art. 1, LVD 73/23/EEC Class 2 Equipment File no. E88261 File no. LR58948 EMC directive 89/336/EEC LV directive 73/23/EEC Japan only Rane RS 1 supplied with MS 1 (4.2 cm x 13 cm x 10.8 cm) (0.45 kg) (9.5 cm x 30 cm x 18 cm) (1.8 kg)

Specification 1k +21.5 to +60 +48 0/-38 -130/-117 102/75 (re +4 dBu) 20-20 kHz 0.007/.03 0.008 6 +20 50 1000' (305 m) Class 2 Equipment UL & CSA CE-EMC CE-Safety UL CSA CE-EMC CE-Safety Built to JIS 18 VAC w/center tap 220 1.65" H x 5.1" W x 4.25" D 1 lb 3.6" H x 11.75" W x 7.2" D 4 lb

10%

Vrms mA

Data Sheet-1

MS 1
MICROPHONE STAGE Block Diagram

Application Information
Uses and applications for the MS 1 should be obvious. But then again, its obvious to us our taxes are too high and nothing is being done about that. With this in mind, perhaps a few words on using the MS 1 might not be wasted. BALANCED USE The MS 1 provides a true cross-coupled balanced Output. This is equivalent to an electronic simulation of a transformer output. Rane follows the AES standard of pin 2 = hot. When running a long cable back to the mixer, run a line level balanced line rather than a mic level line. The compact MS 1 can mount closer to the microphone, provide a local volume control (or not, just pull the knob off), while the stronger signal minimizes RF and hum irritations. UNBALANCED USE Balanced use is recommended to minimize noise. When you must drive an unbalanced device with the MS 1's balanced Output, connect pin 2 to the "+" or "hot" lead, and tie pin 3 and ground together at the shield. MIXING The MS 1 is designed to fill the need for adding one or two microphone channels to line level mixers, such as the Rane SM 26B or SM 82. Many installations using either of these products invariably wind up with one unused input that would do the job perfectly if only it could operate at mic level. In rides the MS 1 to the rescue. DIGITAL RECORDING AND SAMPLING Another handy use for the MS 1 is in recording applications. Many popular products do not have a high enough quality mic preamp to suit the resolution of the digital processing electronics! Such irony. Using the ultra low noise MS 1 to bring the mic inputs up to extremely high quality line level is an easy and affordable solution for this dilemma. No garbage in; no garbage out. Clippity-clop; clippity-clop.

MICROPHONE TYPES The available gain range of the MS 1 allows the use of virtually any type of microphone. True 48V phantom power guarantees the MS 1 works with every microphone made. The better the mic, the better the MS 1 sounds. Ah, the sound of the thundering hoofs is deafening.

Architectural Specifications
The microphone preamplifier shall be a single channel stand-alone unit with remote power supply. The power supply shall be U.L. listed, C.S.A. certified, and CE certified. The input and output shall be fitted with XLR connectors. A polarity inverting switch shall be included. Phantom power shall be provided in compliance with DIN 45596 & IEC 26815 and be controlled by a slide switch with an LED indicator. A gain control shall be provided with 21.5-60 dB adjustment range. A power indicator and a system overload indicator shall be provided. High current cross-coupled active output line driver shall be standard, as well as input RFI filter protection. The unit shall be a Rane MS 1 Microphone Stage.

CHASSIS GROUNDING Units with outboard power supplies do not ground the chassis through the line cord. Make sure that these units are grounded either to another chassis which is earth grounded, or directly to the grounding screw on an AC outlet cover by means of a wire connected to a screw on the chassis with a star washer to guarantee proper contact. Please refer to RaneNote 110, "Sound System Interconnection" (supplied in your manual and available on request separately) for further information on system grounding.

İRane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 TEL (425)355-6000 FAX (425)347-7757 WEB http://www.rane.com

Data Sheet-2

All features & specifications subject to change without notice DOC 103169 PN 08037 2-98