Shure AMS28 User's Guide download pdf (Page 15)

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SPECIFICATIONS

Measurement Conditions (unless otherwise specified):

full gain; 1 kHz, one channel activated; with AMS26 micro-

phone; terminations: Line 10 k

W, Phones 300 W(tip-sleeve

and ring-sleeve), Direct Out 10 k

W; Auto mode, equalization

controls adjusted for flat response

Frequency Response (Ref 1 k Hz, c hannel controls cen -

tered)

80 Hz to 20 kHz ±2 dB; -3 dB corner at 50 Hz

Voltage Gain (typical, controls full clockwise)

Output

Input Mic Aux Line Head -

phone

Direct

Out

AMS26 mic

(72 dB SPL in)

-- 2 0

dBu

+20

dBu

— --38 dBu

Aux 4dB 29

52 dB —

Send/Return -- 2 0

5dB 20

28 dB —

Inputs

Impedance

Input

Designed

for use

with

Actual

(typical)

Input

Clipping

Level

Mic AMS Mics

only

400 W +132 dB

SPL

Aux

£2kW

10 kW +24 dBu

Send/Re-

turn

£2kW

100 kW +20 dBu

Outputs

Impedance

Output

Designed

for use

with

Actual

(typical)

Output

Clipping

Level

Line

³600 W

60 W +24 dBu

Headphone 8-200 W,

60 W recom-

mended

1kW +6 dBu

Direct Out >2 kW 1kW +18 dBu

Send/Re-

turn

>2 kW 1kW +18 dBu

Total Harmonic Distortion

<0.1% at +18 dBu output level, 80 Hz to 20 kHz (through 80

Hz-20 kHz filter; Input 1 and Master at 5, all other controls full

counterclockwise)

Hum and Noise

Equivalent Input Noise 27 dB SPL (A-weighted).........

Output Hum and Noise (through 20 Hz to 20 kHz filter; channel

controls full counterclockwise)

Master full counterclockwise -90 dBu...............

Master full clockwise -65 dBu......................

Polarity

Positive pressure on AMS microphone diaphragm produces

positive voltage on pin 1 (+) with respect to pin 2 (--) at Output.

Send inputs to all outputs are non-inverting. AUX input to all

outputs is inverting.

Input Channel Activation

Attack T im e 4 ms...................................

Hold Tim e 0.4 s (switchable to 1.0 s)...................

Decay Time 0.5 s...................................

Off-Attenuation

15 dB (switchable to ¥)

Overload and Shorting Protection

Shorting outputs, even for prolonged periods, causes no dam-

age. Microphone inputs are not damaged by signals up to 3 V;

Line and Monitor inputs by signals up to 20 V.

Equalization

Low-frequency 6 dB/octave cut, adjustable..............

corner from 50 to 300 Hz

High-frequency ±6 dB at 5 kHz, ±8dBat................

10 kHz, shelving

Limiter

Type Peak.........................................

Threshold Switchable: off, +4, +8, +16.................

(dBu at output)

Attack T im e 2 ms...................................

Recovery Tim e 300 ms...............................

Indicator Lights red when limiting occurs................

Input LEDs

Green on channel activation, red at 6 dB below clipping

Operating Voltage

AMS8100: 100--120 Vac, 50/60 Hz, 200 mA

AMS8100E: 220--240 Vac, 50/60 Hz, 100 mA

Temperature Range

Operating 0° to 60° C(32° to 135° F)..............

Storage -30° to 70° C(-20° to 165° F)................

Overall Dimensions

44.5 mm H x 483 mm W x 317 mm D

x19x12

inches)

Net Weight

4.3kg(9lb9oz)

Replacement Parts

Knob, Channel Gain & Phones (white) 95A8238.......

Knob, Master (gray) 95C8238.......................

Line (Power) Cord (AMS 8100) 95A8762............

Line (Power) Cord (AMS8100E) 95A8247............

Link Cable 95A8889...............................

Three -Terminal Block Connector 95A8580...........

Certifications

AMS8100: UL and cUL listed under UL813, CSA C22.2 No.1

AMS8100E: Conforms to European Union directives, eligi-

ble to bear CE marking; VDE GS-Certified to EN 6 0 065;

meets European Union EMC Immunity Requirements (EN

50 082-- 1, 1992).

CE Certification Note: The extreme sensitivity of the Direc-

tional Intellimix circuitry may allow some channel gating due

to static discharge or abnormal electrical disturbance to the

power or signal lines. The unit will not be damaged: normal

operation will resume after the disturbance ceases.

Service Statement

For additional service or parts information, please contact

Shure’s Service department at 1-800-516-2525. Outside the

United States, please contact your authorized Shure Service

Center.

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