Shure 53A8253 User's Guide

The

Shure Model signed for use in a wide variety of applications. concept by

behind the FP410E. It delivers flawless automatic

combining three unique functions:

FP410E is an automatic microphone mixer de

multi–microphone speech pickup

Shure IntelliMix

•

Noise–Adaptive

•

MaxBus

•

Last Mic Lock–On

is the remarkable new operational

Threshold,

, and

mixing

Noise–Adaptive Threshold distinguishes between constant background sound tivation ground

noise (such as

air conditioning) and rapidly changing

(such as speech).This function continuously adjusts the ac

threshold so that only speech levels louder than the back sound will activate an FP410E channel.

MaxBus eliminates the poor audio quality that results when a talker is picked up by more than one microphone. It does this by controlling the number of microphones that may activate for a

sound source. With MaxBus, one talker will

single

activate only one FP410E channel, even if multiple microphones are “hearing” that talker.

Last Mic Lock–On maintains a seamless audio mix by keeping the most recently activated microphone open until a newly activated microphone takes its place. Without Last Mic Lock–On, a long pause in conversation may allow all microphones to turn off, and it may sound as if the audio signal has been lost. Last Mic Lock–On

ensures that background ambience will always be pres

ent.

Multiple miking situations—with a number of talkers participating—have too

few mics are used, the coverage of each talker may vary, with one Talkers as

very little of the direct sound from their mouths reaches the mi

always presented problems for the audio technician. If

talker (nearest the mic) being louder and clearer than the next.

farthest

from the mics will sound “echoey” and

reverberant,

crophones. If too many mics are used, there’s more background noise and reverberation pickup, as well as less gain before feed-

if a sound reinforcement (P

back

It’s

somewhat like

the

same subject. If these camera signals are combined, the result

having multiple video cameras all focused on

A) system is used.

is a blurred image. When multiple microphones are open for a single talker, the result is a blurred audio signal. But it’s often not practical

for someone to turn mics on when

they are needed and of when they are not. The answer is the FP410E automatic microphone

mixer

The FP410E automatically attenuates (turns down) any microphone not being used, greatly reducing the excess reverberation and feedback problems associated with the use of conventional

Shure

Brothers Incorporated

222 Hartrey A

venue

Evanston IL 60202-3696 U.S.A.

Model FP410 User Guide

multiple microphone and mixer techniques. When a new talker

to speak,

starts vates

the most appropriate microphone. signal processing enables the FP410E to provide clear, natural voice pickup. The FP410E significantly reduces the problems of “boomy” or “muddy” sound, insufficient sound level (because of feedback are

virtually eliminated because the FP410E needs no operator or technician for continual adjustment—once set up, it is self–sufficient.

The

FP410E has numerous applications in video production audio recording, broadcasting, and sound reinforcement. In any speech pickup application where multiple microphones are re-

the FP410E dramatically improves audio quality

quired, from manual to automatic operation allows an individual talker’s

to rise above

voice come

clearer and more intelligible.

Each

FP410E handles up to four microphones or line–level sig nals. Any high quality, low–impedance, balanced microphone using a dynamic or condenser* transducer (including wireless and shotgun terconnected eration

is also available using a front–panel selector switch..

The

FP410E is supplied with optional bumpers (feet) horizontal surfaces, a short cable for linking two FP410E mixers, and a rack–mounting kit for installation in a standard 483 mm (19–inch)

The

FP410E is supplied for 230 V

and

its line cord is terminated by a Schuko ac plug.

*Self–powered

Features

• Reliable,

matically

• Front–panel

ventional mixers

• Selectable

in speech

•

Selectable Of

• Automatic gain adjustment as additional microphones are acti-

vated

• Defeatable

phone on at all times—maintains acoustic ambiance and prevents

the FP410E immediately selects and silently acti

Shure IntelliMix

or “howling”), and operator errors. In fact, operator errors

the background noise and reverberation to be

types) can be used. Additional FP410E mixers can be in

using the rear–panel link jacks. Complete manual op

audio equipment rack..

ac operation (line fuse 0.05 A)

or operable on 14 or 48 Vdc phantom power

quick–acting, noise–free microphone selection––auto adjusts to changes in background room noise

channel gain

and master controls operate as in con

hold time keeps microphones on during short pauses

f–Attenuation control for seamless operation

“Last Mic Lock–On” circuit keeps at least one

confusing background sound changes

electronic

completely

and

. Switching

for use on

micro

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27A8319

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Printed in U.S.A.

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MODEL

FIGURE 1

The

FP410E has numerous applications in video production

and

audio

recording, broadcasting, and sound reinforcement.

any speech

are

required, the FP410E dramatically

Switching

pickup application where multiple microphones

improves audio quality

from manual to automatic operation

allows an indi vidual talker’s voice to rise above the background noise and reverberation

Each

to become clearer and more intelligible.

FP410E handles up to four microphones or line–level signals. Any high quality, low–impedance, balanced microphone using a dynamic or condenser* transducer (including wireless mixers Complete

and shotgun types) can be used. Additional FP410E

can be interconnected using the rear–panel link

manual operation is also available using a

jacks.

front–pa

nel selector switch..

The

FP410E is supplied with optional bumpers (feet) for use on horizontal surfaces, a short cable for linking two FP410E mixers, and a rack–mounting kit for installation in a standard 483

mm (19–inch) audio equipment rack..

The FP410E is supplied for 230 Vac operation (line fuse

0.05

A) and its line cord is terminated by a Schuko ac plug.

*Self–powered

or operable on 14 or 48 Vdc phantom power

Features

•

Reliable, quick–acting, noise–free microphone selection–– automatically

• Front–panel

adjusts to changes in background room noise

channel gain and master controls operate as

conventional mixers

• Selectable hold time keeps microphones on during short

in speech

pauses

•

Selectable Of

f–Attenuation control for seamless operation

• Automatic gain adjustment as additional microphones are

activated

–24 –20 –16 –12 –8 –4 0 +4 +8 +12 +16

–20 –10 –7 –5 –3 –2 –1 0 +1 +2 +3

BATTERY TEST MANUAL AUDIO LIMITER IN

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100%

PEAK

PHONES

PULL FOR MONITOR

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FP410E

• Defeatable

crophone

prevents

• Wide, flat frequency response and low distortion up +18

dBm

“Last Mic Lock–On” circuit keeps at least one mi

on at all times—maintains

acoustic ambiance and

confusing background sound changes

output

• Linking capability for systems containing over 25 mixers

and

over 100 microphones

• LED indication of microphone channel mix levels, output

level,

and limiter action

• Automatic muting prevents annoying thumps and loud-

speaker

damage when unit is turned on and of

• Transformer–balanced inputs and outputs switchable to

line–

or microphone–level

•

Separate monitor input and tape output (aux–level) jacks

•

Front–panel headphone monitor jacks with level control

•

Front–panel auto–disable switch for manual operation

•

Operates from ac mains voltage or two 9 V batteries

• Switchable 14 V or 48 V phantom powering for condenser

microphones

• VDE

Approved

monized with CENELEC HD 195 S6.

CONTROLS,

ure 1)

Microphone Channel Gain Controls crophone clockwise activates microphone channel and allows adjustment

Input Normal Green LED: Should flicker with normal speech levels.

channel is removed from operation. T

of microphone level.

for safety under DIN VDE 0860/05.89, har

CONNECT

ORS, INDICATORS

1–4

: At “0” position, mi

OFF ON

(See

Fig

urning control

U.S. Patent 4,658,425; other patents pending

Printed in U.S.A.

3. Input High Red LED: Should flicker only on loud speech peaks.

Flat (—)/Low–Cut (

cy rollof

f to reduce undesirable low–frequency signals such as

wind

noise.

5. MASTER bined input signals at Mic/Line, Tape and Phones outputs. PULL tor

(tone level is determined by Master control setting). Oscilla signal appears at all outputs. When oscillator is not in use,

tor knob

6. PEAK/VU adjacent ter indicates peak signal levels. In VU position, it indicates av erage

BATTERY TEST

7. junction with PEAK/VU Meter to indicate battery condition.With sition, new set of batteries lights all green LEDs. Number of green LEDs lit indicates approximate battery life remaining when flashing green

8. MANUAL/AUTO microphone ates as a conventional microphone mixer. In AUTO position, unused

LIMITER IN

9. ponding limiter circuit to cut overload distortion during loud program intervals without affecting normal program levels. The

red limiter LED indicates limiting action.

10. PHONES toring mixer output through most stereo or mono headphones. PULL FOR MONITOR switch applies signal from rear–panel MON IN 3.5 mm phone jack to headphones amplifier. When switch is activated, mixer output signal does not appear in headphones output. PHONES rotary control determines headphone

11. POWER circuitry. in

battery operation, flashes when total

to 10 Vdc..

12. 230 V nection

13. OUTPUT one

or two amplifiers, recorders or other mixers. Output levels are individually switchable to Line level or low–impedance Mic level by adjacent individual MIC/LINE slide switches. are electrically isolated.

14. T feed

unbalanced aux–level inputs of most tape recorders and

amplifiers.

Rotary Control: Determines

FOR 1 kHz T

should be pushed in.

Output Level Meter: Meter function

PEAK/VU slide switch. In PEAK switch position, me

signal levels, simulating a true VU meter

POWER switch on and switch

alkaline batteries are used. N

when total battery supply voltage drops to 10 Vdc (one

LED lit).

operating mode. In MANUAL

microphones automatically turn of

1/4–inch and 3.5

level in either case.

Slide Switch: Applies ac

Adjacent green LED indicates

AC, 50/60 Hz 8W

to 230 V

3–Pin Male XLR Connectors: For connection to

Both

APE OUT

) Slide Switches: Provide

ONE position activates 1 kHz tone oscilla

Momentary Slide Switch: Operates in

in momentary–on po

OTE:

Slide Switch: Selects manual or automatic

Slide Switch: Activates fast–acting, peak–res

mm Phone Jacks: Permit moni

or battery power to mixer

power–on status and,

battery voltage drops

3–Pin Power Connector: For con

ac, 50/60 Hz power outlets.

jacks provide the same signal information but

3.5 mm Phone Jack: Provides output signal to

low–frequen

the level of the com

is selected by

con

POWER LED

position, unit oper

begins

signal

15. LINK IN/OUT 8–Pin miniature DIN Jacks: Using link cables, these jacks permit virtually unlimited number of FP410E mixers to be stacked to achieve additional input capacity.

Jacks carry

information.

16. MON IN level

source to headphones amplifier without interrupting other

mixer

functions. Jack is

FOR MONIT

17. PHANT 14 Vdc phantom power for condenser microphones to all inputs.

With

switch on and INPUT MIC/LINE switches in MIC po

+14 Vdc is applied to pins 2 and 3 of each input XLR con

sition, nector.

NOTE: Phantom power can be internally set

(see

Modifiable Functions

Shure

condenser microphones, verify that voltage and source

resistance

18. INPUT 1–4 Female 3–Pin XLR Connectors: Permit con- nection vel match source levels.

19. mote er

failure.

This product is not completely disconnected from the mains supply

requirements are compatible (see

to balanced, low–impedance microphones or line–le

sources. Adjacent MIC/LINE

Battery Compartment: Accepts two 9–volt

operation or as automatic backup in the event of ac pow

when the power switch is Of

INSTALLATION

audio signals, MaxBus and Last Mic Lock–

3.5 mm Phone Jack: Sends external Aux or Line–

activated by pulling front–panel PULL

OR knob outward.

OM ON/OFF

Slide Switch: Controls application of

to 48 Vdc

section). When using other than

Specifications)

slide switches adjust inputs to

batteries for re

PLEASE

AND OPERA

NOTE

TION

Mixer Installation

Install

the FP410E as follows. horizontal ners

If (19–inch) screws position at the sides (rack–mount holes facing forward), and secure the ears with the previously removed Phillips head screws. should access audio equipment rack and secure it with the four supplied rack– mount screws.

Make electrical connections as follows.

1. For battery operation, compress

battery

drawer from the compartment. Observing battery polarity

markings, insert two fresh 9–volt batteries in the drawer

slots.

to the right to determine battery condition. IMPORTANT:

Battery operating life is reduced when microphones are

phantom–powered—especially

ing. For ac operation, connect the power cord to a 230 V

50/60 Hz source.

2. Connect the

surface, attach the four supplied bumpers to the cor

of the chassis bottom to prevent marring the surface.

the FP410E is to be rack–mounted in a standard 483

audio equipment rack, remove the

from each FP410E

NOTE: The rack ears are asymmetrical; the

on your right (as you face the front panel) to permit

to the battery

equipment rack. Install the rack–mounted FP410E in the

drawer with thumb

With the Power switch on, slide the Battery T

the Mic Input connectors

compartment while the FP410E is in the

microphones and/or line–level signal sources

If the unit is to be placed on a

two Phillips head

side panel, place the rack “ears” in

wider

ear

the release latches of the

and forefinger

by 48 Vdc phantom

(use conventional 2–conductor

, and withdraw the

est

switch

power

ac,

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