Rane 1S User's Manual

DATA SHEET / MANUAL MS 1S

MICROPHONE STAGE

General Description

The Rane MS 1S 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 1S provides 48 V switchable

Phantom Power with an indicator LED, continuous rotary Gain trim between 15 dB and 60 dB, Signal/Overload LED, and

XLR balanced Input & Output connectors. A Polarity switch and high-current cross-coupled output line driver round out the features.

The MS 1S 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 1S 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).

The MS 1S replaces the MS 1B Mic

Stage with a new internal universal power supply. The width increases by one inch, all other features are the same.

Features

• -127 dB Equivalent Input Noise

• Gain Control

• Signal / Overload Indicator

• Polarity Switch

• Switchable 48 V Phantom Power

• True Differential Input

• Cross-coupled Line Driver

• Internal 100-240 VAC Power Supply

Data Sheet-1

MS 1S

MICROPHONE STAGE

Features and Specifications

Parameter

Input Impedance

Gain Range

Phantom Power

..........Impedance

Max. Input Level

Equivalent Input Noise

Signal to Noise Ratio

Dynamic Range

CMRR

Frequency Response

THD+Noise (gain 60 dB)

THD+Noise (gain 15 dB)

Line Driver

Max. Output Level

Output Impedance

Signal Indicator

Overload Indicator

Output Cable Length

Unit: Agency Listing

Maximum Power

Universal Line Voltage

Power Cord

Unit Size

..........Weight

Shipping Size

..........Weight

Specification

2k

15 to 60

+48

6.81k

+9 / -35

-127

94

114 / 91

80

3 to 200k

.004 (Output=+20 dBu)

.0006 (Output=+20 dBu)

Active Cross-coupled

+18 / +24

94

-11

+20

1000 feet / 300 meters c/CSA/us

3

100-240

C5 cord to C6 inlet

1.64"H x 6.8"W x 4.26"D

1 lb 1 oz

3.6"H x 11.75"W x 7.2"D

4 lb

Limit Units Conditions/Comments typ.

typ.

typ.

typ.

typ.

1% typ.

Ω dB

Balanced

4%

1%

V

Ω

10 mA max.

Each leg min.

dBu Gain 15 / 60, balanced output typ.

typ.

dBu 20 kHz BW, Rs=150 Ω, Gain = 60 dB dB 20 kHz BW, Rs=150 Ω, Gain = 15 dB, re 4 dBu dB dB

Hz

%

%

Gain 15 / 60, 20 Hz to 20 kHz

Rs=150

+0, -3dB

Ω , 120 Hz, Gain = 60 dB

55 Hz to 20 kHz, 20 kHz BW, Rl=10 kΩ

50 Hz to 20 kHz, 20 kHz BW, Rl=10 kΩ min.

dBu Balanced, 2 kΩ load

1% Ω Each Leg typ.

typ.

typ.

dBu dBu

Balanced output, Green LED

Balanced output, Amber LED

Belden 8451 or equivalent

247105

W

VAC 50/60 Hz

IEC 60320-1

(4.2 cm x 17.3 cm x 10.8 cm)

(0.5 kg)

(9.5 cm x 30 cm x 18 cm)

(1.8 kg)

Data Sheet-2

MS 1S

MICROPHONE STAGE

Block Diagram

+48V PHANTOM

POWER

MIC

INPUT

3

2

1

RFI

FILTER

SIGNAL / OVERLOAD

+6 dB

INVERT

2

1

3

LINE

LEVEL

OUT

GAIN

12-60 dB

Application

Information

Uses and applications for the MS 1S should be obvious. But then again, it’s 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 1S might not be wasted.

BALANCED USE

The MS 1S 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 1S 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. Unbalanced lines are usually quiet under 10 feet (3 meters), but longer runs will introduce the hum and interference you are trying to avoid. When you must drive an unbalanced device with the MS 1S's balanced output, keep the cable short, and connect pin 2 to the “+” or “hot” lead, and tie pin 3 and ground

together at the shield.

MIXING

The MS 1S is designed to fill the need for adding a microphone channel to linelevel mixers, such as the Rane SM 26S or

SM 82S. 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 miclevel. In rides the MS 1S to the rescue.

DIGITAL RECORDING AND SAMPLING

Another handy use for the MS 1S 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 1S 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 and large input range of the MS 1S allows the use of virtually any type of microphone. True 48V phantom power guarantees the MS 1S works with every microphone. The better the mic, the better the MS 1S sounds.

Ah, the sound of the thundering hoofs is deafening.

Data Sheet-3

MS 1S

MICROPHONE STAGE

Front, Top & Rear Panel Dimensions

6.1"

4 6

2

MIN MAX

GAIN

8

SIG OL

ON

48V PHANTOM POWER

MS 1S

MIC STAGE

0.15"

MS 1S

100-240 V

50/60 Hz 3 WATTS

ACN 001 345 482

POWER

6.8"

MADE IN U.S.A. RANE CORP.

THIS DEVICE

COMPLIES WITH PART

15 OF THE FCC RULES

FOR A CLASS ‘B’

COMPUTING DEVICE.

NORMAL INVERT

POLARITY LINE OUT MIC IN

PIN 2: (+)

PIN 3: (–)

PIN 1:

0.35"

Architectural

Specifications

The microphone preamplifier shall be a single channel stand-alone unit with a removable IEC power cord. The unit shall accept voltages from 100 to 240 VAC.

The input and output shall be fitted with

XLR connectors. A polarity inverting switch shall be included. Phantom power of no less than 48 volts shall be provided in compliance with IEC 60268-15 and be controlled by a slide switch with an LED indicator. A gain control shall be provided with 18-66 dB adjustment range. Power, system signal and overload indicators 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 1S Microphone Stage.

©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 USA TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com

Data Sheet-4

All features & specifications subject to change without notice. DOC 104514