Sound Devices 442 Manuel

Sound Devices, LLC

300 Wengel Drive

Reedsburg, WI 53959 USA

Voice +1 (608) 524-0625

Fax +1 (608) 524-0655

www.sounddevices.com

442

Field Mixer

User Guide and Technical Information

for 442 and 442 Nordic Field Mixers

backside - front cover

Table of Contents

Quick Start Guide . . . . . . . . . . . . . . . . . . . . . . . .3

Powering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Input Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . 3

Output Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Headphone Monitoring . . . . . . . . . . . . . . . . . . . . . . . 3

Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Limiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Front Panel Descriptions . . . . . . . . . . . . . . . . . . 4

Input Panel Descriptions . . . . . . . . . . . . . . . . . . 6

Output Panel Descriptions . . . . . . . . . . . . . . . . .7

Input Channels . . . . . . . . . . . . . . . . . . . . . . . . . .8

Mic/Line Level Selection . . . . . . . . . . . . . . . . . . . . . . 8

Gain (trim) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Channel Fader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Phantom and T- Microphone Powering . . . . . . . . . . . 8

High-Pass Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Pan Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Input Limiters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

LIM LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Peak LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Polarity Reversal - Channel 2 . . . . . . . . . . . . . . . . . . 10

Stereo Linking ON - Channels 1 and 2 . . . . . . . . . . . 11

Stereo Link MS - Channels 1 and 2 . . . . . . . . . . . . . 11

PFL (Channel Solo Monitoring) . . . . . . . . . . . . . . . . . 11

Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Master Gain Control . . . . . . . . . . . . . . . . . . . . . . . . . 11

Master Outputs - XLR and Hirose Multi-Pin . . . . . . . 11

Secondary Balanced Outputs . . . . . . . . . . . . . . . . . . 12

Tape Outputs (Mix Output) . . . . . . . . . . . . . . . . . . . . 12

Mono Mic Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Output Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . .12

LINK vs ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Mix Input (linking mixers) . . . . . . . . . . . . . . . . . .13

Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Meter Ballistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Ballistics Lock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Headphone Peak LED . . . . . . . . . . . . . . . . . . . . . . . 15

Headphone Monitoring . . . . . . . . . . . . . . . . . . . .15

Headphone Source Selection . . . . . . . . . . . . . . . . . . 15

Headphone Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Return A and B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Powering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Internal Powering . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

External Powering . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Power Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . 16

Tone Oscillator / Slate Microphone . . . . . . . . . .17

Tone Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Slate Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Accessing the Setup Menu. . . . . . . . . . . . . . . . . 18

Enter the Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . 18

User Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

442 Nordic Information . . . . . . . . . . . . . . . . . . . . 19

Setup Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Setup Menu Firmware v 5.07 . . . . . . . . . . . . . . .20

Setup Menu Firmware v 3 & 4. . . . . . . . . . . . . . .21

Setup Menu Firmware v 2, (442 only). . . . . . . . .22

Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . .23

System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Block Diagram - Inputs and Outputs . . . . . . . . . 26

Block Diagram - Monitoring . . . . . . . . . . . . . . . . 27

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

CE Declaration of Conformity . . . . . . . . . . . . . . 29

Warranty and Technical Support . . . . . . . . . . . .30

FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . 30

442/442N User Guide and Technical Information

v. 5.07 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

Welcome

Developed with insight from the industry’s top audio engineers, the 442 Field Mixer encompasses

the audio performance, feature set, and mechanical construction demanded by those who rely

on audio gear for their livelihood. The 442 contains four high-performance microphone preampliﬁers,

multiple outputs, and ﬂexible monitoring. Its inputs and outputs, including direct outputs on each

channel, make the 442 at home in small “run-and-gun” applications as well as large, multiple input

productions.

The 442 incorporates a complete feature-set into a compact, functional design. With no hidden controls,

the 442's parameters are accessible from the three main surfaces. The highly efﬁcient circuitry allows the

mixer to be powered by either four internal AA batteries or external 5-18 VDC.

The 442, like all Sound Devices professional audio products, is designed to withstand the physical

and environmental extremes inherent to ﬁeld production. Its compact construction strikes the perfect

balance between performance, accessible controls, and durability.

Quick Start Guide

For those familiar with ﬁeld mixers or mixing consoles, this "Quick Start Guide" highlights basic

functionality to begin operating the 442.

Powering

1. For internal powering, insert four AA batteries with the positive (+) side ﬁrst into the battery

compartment.

For external powering, connect the external DC power (5–18 VDC) to the 442's DC connector.

2. Slide the power switch in the direction of the intended power source (INT or EXT).

3. Press the battery check button to view voltage levels.

Input Channel Setup

1. Connect a signal source (microphone or line level signal) to a channel's XLR input connector.

2. Select the input type to MIC or LINE level.

3. Engage Phantom or T-power, if required by the input source.

4. Set the Channel Fader to the 0 (unity) position.

5. Adjust the Channel Pan to the appropriate position.

6. Adjust the High-Pass ﬁlter as needed.

7. Place the Master Gain control to the 0 (unity) position.

8. Adjust the Channel Gain/trim control to the required level.

9. Verify that signal is present on the Output Meter.

Output Connection

1. Connect the outputs of the 442 to the inputs of the receiving device.

2. Select the output type - MIC, -10, or LINE level.

3. Verify that the receiving device is getting signal.

Headphone Monitoring

1. Connect headphones to the either one of the headphone connectors located on the Output Panel.

2. Turn the Monitor Selection Switch the ST position to listen to stereo mixer program.

3. Monitor the stereo mix in the headphones.

Metering

1. View the master output level on the LED Output Meter.

2. Toggle between VU, PPM (Peak), or combined VU/PPM metering with the PK/VU button.

3. Adjust the meter brightness among its intensities with the LED Brightness button.

Limiting

1. Activate the input and output limiters by engaging the front panel switch - either stereo linked (LINK)

or dual mono (ON).

2. Note the limiting activity on the limiter LEDs and the output level.

3. Adjust the output limiter threshold and input limiter availability in the Setup Menu (see Appendix).

442/442N User Guide and Technical Information

v. 5.07 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

Front Panel Descriptions

+15

16 17 18 19 20 22

13467910 12

11 13 14

1) Channel Fader

Primary control for adjusting the input

level of each channel during operation.

Ranges from Off to +15 dB. Nominal

setting is in the middle (0 dB).

2) Channel Pan

Controls the Left/Right balance of the

input signal to the outputs. Signal is 3

dB greater when panned hard left and

right.

3) LINK LED

Indicates that channels 1 and 2 are

linked as a stereo pair, set via the Link

Switch on the input panel.

4) Channel 2 Polarity Reverse

Reverses the polarity of input channel 2.

5) PFL (Solo)

Pre-fade Listen. Sends the selected

channel's post-gain/pre-fade signal

to the headphone monitor for

troubleshooting and gain staging. Does

not affect master output signal.

6) Peak LED

Indicates that the input signal is 3 dB

from clipping. If the LED illuminates,

gain is set too high.

7) Input Limiter LED

Illuminates orange when the Input

Limiter is active, LED intensity signiﬁes

amount of limiting. If signiﬁcant

limiting occurs, reduce the level of the

Gain Trim.

8) Output Meter

40 segment output meter. For Peak

setting, the markings indicate output

level (at line-level) in dBu. For VU

setting, markings indicate Volume Units.

See Appendix A for 442N scale.

9) Slate Mic / Tone Oscillator

Activates the slate microphone in the

left position (momentary) and activates

the tone oscillator in the right position

(latched).

10) LED Brightness Button

Toggles between the four LED

brightness settings.

11) PK/VU Button

Toggles between the available output

meter ballistics—VU, PPM (Peak),

combined VU/PPM, or VU-PPM Hold.

See Metering Hold down the PK/VU

button while powering on the mixer to

access the Setup Menu.

12) Battery Check Button

Views the battery level on the output

meter. Left (top) meter indicates internal

battery level, right (bottom) meter

indicates external battery level. See

Powering.

13) Power LED

Illuminates when unit is powered.

Flashes when power supply is low. With

external DC supply the LED ﬂashes at

select voltage. See Powering.

14) Power Switch

Three-position switch, selects between

internal battery power or external DC

sources, middle position is Off.

15) Gain (Trim)

Coarse input gain control. Sets the

initial input sensitivity level so that the

Channel Fader can be used for ﬁne gain

adjustments. Range is from +22 dB to

+60 dB.

16) High-Pass Filter

Adjusts corner (-3 dB) frequency of

high-pass ﬁlter. Full counter-clockwise

position (de-tented) deactivates the

High-Pass Filter. Range is 80-240 Hz,

12dB/oct to 6 dB/oct.

17) Limiter Switch

Activates both Input and Output

Limiters. Input Limiters can be

defeated in the Setup Menu. When

ON is selected, the Output Limiters act

independently on each Left and Right

Outputs. When LINK is selected, the

Output Limiters are linked and limiting

is applied evenly across the Stereo

Outputs.

18) Master Gain

Controls the overall signal level of the

Left and Right Outputs.

19) Monitor Selection Switch

Selects the signal source in headphone

monitor. Options include: Off; Left

Output bus; Right Output bus; Mono

(summed left and right); STereo master;

Return A; Return B; Return A in the

left / Return B in the right headphone

monitor; MS-Left; MS Right; MS-stereo.

20) Headphone Gain

Adjusts the overall headphone gain.

21) Output Limiter LEDs

Illuminates orange when the Output

Limiter is active, LED intensity signiﬁes

amount of limiting. If signiﬁcant Output

Limiting occurs, reduce the levels of the

Channel and Master faders accordingly.

22) Return Monitor Toggle Switch

Sends the return audio signals to the

headphone monitor. Left position

latches and right position is momentary.

Return routing relative to switch

position can be modiﬁed in the Setup

Menu. Factory default is RTN A on the

left, middle is Off, and RTN B on the

right.

442/442N User Guide and Technical Information

v. 5.07 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

Input Panel Descriptions

3 4 67

1) XLR Inputs

Transformer-balanced channel inputs.

Pin-1 = ground; pin-2 = ‘hot’ (+); pin-3 =

‘cold’ (-). Unbalance by grounding pin-3

to pin-1 of the XLR connector.

2) TA3M-type Channel Direct Outputs

Balanced direct outputs. Signal is

pre-fader (post-trim, input limiter, and

high-pass ﬁlter). Output level is selected

in the Setup Menu between Mic and

Line-levels. Pin-1 = Ground; pin-2 =

'Hot'(+); pin-3 = 'Cold' (-). Unbalance by

ﬂoating pin-3.

3) Phantom/DYNamic/T-Power

Selects the microphone powering

type of the associated channel. NOTE:

Use T-Powering ony for T-Powered

microphones.

4) Mic/Line Channel Switch

Selects the input level of its associated

input connector.

5) Phantom Voltage Selection

Selects either 48V or 12V phantom

voltage for the input channels.

6) 1 + 2 LINK

Groups channels 1 and 2 as a stereo pair.

ON selects a L/R stereo pair, MS selects

a Mid-Side stereo pair. See Stereo Link

for more information.

7) RTN A and RTN B Level

Adjusts the input sensitivity for the

Return A and Return B signals. Useful

for balancing levels when toggling

between program and return audio.

Output Panel Descriptions

7 9 11

810 12 13

12 4 63 5

1) Mix In

Designed exclusively to link another

442, 302, MixPre, or MP-2 to the 442

for additional inputs. Signal is sent

directly to the Output Stereo bus.

Pin-1 = Ground, pin-2 = Left, pin-3 =

Right. Shell of TA3 connector must be

grounded to pin-1 to open connection.

2) Mono Mic Out

Unbalanced mono mic-level output on

1/8-inch female connector, designed to

connect to wireless IFB transmitters or

transcription recorders. Tip = Hot, sleeve

= Ground.

3) Tape Output(s) / Mix Out

Unbalanced stereo outputs on 3.5 mm

and TA3-type connectors. TA3, pin-1 =

Ground, pin-2 = Left, pin-3 = Right. 1/8-

inch, sleeve = Ground, tip = Left, ring =

Right. Connect to the Mix In of another

442 for additional channels.

4) Hirose Multi-Pin Output (Return A)

Multi-pin connector includes second

master output (on separate winding

from XLR outputs) and unbalanced

stereo Return A. See Block Diagram for

pin conﬁguration

5) XLR Master Outputs

Transformer-balanced ouputs. Pin-1 =

Ground; pin-2 = Hot (+); pin 3 = Cold

(-). Unbalance by grounding pin-3 to

pin-1 of the XLR connector.

6) Battery Compartment

Holds four AA batteries required for

internal powering. Accepts Alkaline,

Lithium, or NiHM rechargeable cells.

7) Headphone Outputs

1/4-inch and 3.5 mm stereo connectors,

drive headphones from 8-2000 ohm

impedances to required monitoring

levels.

8) Return B Inputs

Unbalanced stereo TA3-type or 3.5 mm

input connectors for Return B audio.

TA3: pin-1 = Ground, pin-2 = Left, pin-3

= Right. 1/8-inch: sleeve = Ground, tip

= Left, ring = Right.

9) Multi-Pin Hirose Output Level

Selects output level for the Hirose Multi-

Pin Output to Mic, Tape, or Line Level.

10) Left XLR Output Level

Sets the nominal output level for the

Left XLR Master Output to Mic, Tape

(-10), or Line levels.

11) TA3M-type Master Outputs

Mic- or Line-level selectable in the Setup

Menu. Pin-1 = Ground, pin-2 = Hot (+),

pin-3 = Cold (-), ﬂoat pin-3 to unbalance.

12) Left XLR Output Level

Sets the nominal output level for the

Right XLR Master Output to Mic, Tape

(-10), or Line levels.

13) DC Input

Accepts DC voltages from 5–18 V for

mixer powering. 4-pin Hirose connector

is wired pin-1 negative (–), pin-4 =

positive (+). Ext DC is completely

isolated (ﬂoating) from the rest of the

circuitry. Early 442 models (s/n < 0303)

use coaxial DC power connectors. Tip =

(+) and sleeve = (–).

442/442N User Guide and Technical Information

v. 5.07 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

Input Channels

The inputs of the 442 consist of four, full-featured microphone preampliﬁers. Each channel has a wide

gain range to accommodate nearly all signal types. The 442 accepts signals ranging from low-sensitivity

dynamic and ribbon microphones to medium-level wireless and condenser mic-level outputs, and to

"hot" line-level signals.

442 input channels are transformer-balanced. The isolation characteristics of transformers are superior

to other balancing techniques for the hostile and uncontrolled environments of ﬁeld production.

Transformers provide galvanic isolation from the driving source, meaning there is no direct electrical

connection. Signals are "transformed" magnetically. The input transformers in the 442 use premium

magnetic core material to achieve high signal handling capability (especially at low frequencies)

while keeping distortion to a minimum. Because of their inherently high common mode impedance,

transformers are unrivaled by any other type of input for common-mode noise rejection.

The XLR input connectors of the 442 can be used with either balanced or unbalanced connections.

When unbalancing, ground pin-3 to pin-1. There is no change in gain between unbalanced and balanced

connections into the 442.

Mic/Line Level Selection

The Mic/Line switch is used to select the input level of the respective channel. The 442 has up to

84 dB of available gain from mic-input to line-output. When in the LINE position, the input channel

sensitivity is reduced by 40 dB.

Gain (trim)

Like traditional mixing consoles, the 442’s input sensitivity is set with the Gain (trim)

potentiometer. With the Channel Fader set to unity gain (0 dB or 12 o’clock), make the appropriate

adjustments with the Gain (trim) pot. Make coarse gain adjustments with the Gain (trim) pot during

setup. Once the gain is set to the desired level, recess the Gain (trim) pot to hide it from the 442’s mixing

surface.

Channel Fader

The Channel Fader is the primary level control used during mixing operation. Use the

Channel Fader to make ﬁne level adjustments during operation. The fader can be attenuated from Off

(full counter-clockwise position) to +15 dB above the set Gain (Trim) level (full clockwise position).

Phantom and T- Microphone Powering

This switch selects the type of power that will be applied to the adjacent input XLR. The 442

provides both Phantom and T-power on each channel respectively. If neither Phantom or T-power are

required, for instance with dynamic microphones, it is best practice to turn Off microphone powering

(DYN position). Phantom power can capacitively couple noise into the mic inputs with poor mic cables.

The DYN (dynamic) position does not apply any voltage to the microphone input. Do not apply power

to ribbon microphones, improperly wired cables can permanently damage the microphone.

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