Phonic AM844D USB User’s Manual

AM844DUSB

English Deutsch Español Français Português

AM844D USB

User's Manual

Benutzerhandbuch

Manual del Usuario

Mode d'emploi

Manual do Usuário

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

AM844D USB

8-Mic/Line 4-Stereo 4-Group Mixer with DFX & USB Interface

Mezcladora con DFX & Interfase USB de 8- Mic/Línea, 4-Estéreo 4 Grupos

8 / 4


ENGLISH	.....................................I
ESPAÑOL .....................................	II
.....................................	III

V1.0 09/2/2011

USER'S MANUAL
CONTENTS
INTRODUCTION.....................................................................	1
FEATURES..............................................................................	1
SYSTEM REQUIREMENTS....................................................	1
BASIC SETUP..........................................................................	1
MAKING CONNECTIONS.......................................................	2
CONTROLS AND SETTINGS..................................................	4
SPECIFICATIONS...................................................................	7
APPENDIX
DIGITAL EFFECT TABLE.........................................................	1
APPLICATION.........................................................................	2
DIMENSION.............................................................................	4
BLOCK DIAGRAM...................................................................	5

Phonic preserves the right to improve or alter any information within this document without prior notice.

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

INTRODUCTION

Congratulations on choosing one of Phonic’s many quality compact mixers. The AM844D USB compact mixer – designed by the talented engineers that, in the past, have created a variety of mixers fantastic in style and performance – displays similar proficiency that previous products have shown; with more than a few refinements, of course. The entire AM series features full gain ranges, amazingly low distortion levels, and incredibly wide dynamic ranges – just showing the dominance these small machines will have in any venue. The AM844D USB also offers a USB interface for making stereo recordings on any modern

Windowsor Mac-based computer.

We know how eager you are to get started – wanting to get the mixer out and hook it all up is probably your number one priority right now – but before you do, we strongly urge you to take the time to look through this manual. Inside you will find important facts and figures on the setup, use and application of your brand new mixer. If you do happen to be one of the many people who flatly refuse to read user manuals, then we just urge you to at least glance at the Basic Setup section. After glancing at or reading through the manual (we applaud you if you do read the entire manual), please store it in a place that is easy for you to find, because chances are there is something you missed the first time around.

FEATURES

•Stereo USB interface for PC or Mac recording

•Eight Mic/Line mono channels with direct outs, 3-band EQ and compressor

•Four stereo channels (two with microphone inputs)

•Eight direct outputs for multi-track recording

•3-band EQ with swept-mid range plus low cut on each mono channel

•18dB/oct, 75Hz Loc Cut Filter on each mic channels

•Four AUX sends, AUX 1 & 2 with Pre/Post selector

•32/40-bit digital stereo multi-effect processor with 100 programs, tap-delay and test-tones

•Four stereo AUX Returns

•Solo selector on each input channel

•CTRL RM Phones with multi input source matrix selector

•Eight subgroups with fader control and L-R assign buttons

•2T/USB return with control level and TO MAIN L/R assign button

•Built-in switching power supply with universal connector, 100-

240VAC, 50/60Hz

•12V BNC connector for gooseneck lamp

•Solo switch pre/post selector for AUX Returns

SYSTEM REQUIREMENTS

Windows

•Windows™ XP SP2, Vista™ or 7

•Intel™ Pentium™ 4 processor or better

•512 MB RAM (1 GB recommended)

Macintosh

•Apple™ Mac™ OSX 10.5 or higher

•G4™ processor or better

•512 MB RAM (1 GB recommended)

BASIC SETUP

Getting Started

1.Ensure all power is turned off on the AM844D USB mixer. To totally ensure this, the AC cable should not be connected to the unit.

2.All faders and level controls should be set at the lowest level and all channels switched off to ensure no sound is inadvertently sent through the outputs when the device is switched on. All levels should be altered to acceptable degrees after the device is turned on.

3.Plug all necessary instruments and equipment into the device’s various inputs as required. This may include line signal devices, as well as microphones and/or guitars, keyboards, etc.

4.Plug any necessary equipment into the device’s various outputs. This could include amplifiers, active speakers or monitors, signal processors, and/or recording devices.

5.Plug the supplied AC cable into the AC inlet on the back of the device ensuring the local voltage level is identical to that required on your device.

6.Plug the supplied AC cable into a power outlet of a suitable voltage.

7.Turn the power switch on.

Channel Setup

1.To ensure the correct audio levels of each input channel is selected, every channel should first be switched off and all faders set to 0.

2.Choose the channel that you wish to set the level of, and ensure that channel has a signal sent to it similar to the signal that will be sent when in common use. For example, if the channel is using a microphone, then you should speak or sing at the same level the performer normally would during a performance. If a guitar is plugged into that channel, then the guitar should also be used as it normally would be.

3.Press the Solo button of the channel, and ensure the Pre /

Post button is pushed-in, allowing you to see the audio level in the master level meter.

4.Set the gain of the selected channel to a level that ensures the audio level is around 0 dB, as indicated by the level meter.

5.This channel is now ready to be used; you can stop making the audio signal.

6.To activate the channel, release the Solo button and engage the channel’s ‘ON’ button and press the 1-2, 3-4 or L-R routing buttons, allowing the signal to be sent to the corresponding destinations.

7.You should now select the next channel to set and go back to follow steps 1 through 6.

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

AM844D USB

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

Computer Connection

By simply connecting the USB cable provided along with your

AM844D USB to the device and your Personal Computer or

Laptop, you are able to send CD quality (16-bit stereo, with a 44.1 kHz sampling rate) signal to and from your mixer. By doing this, you are actually turning your AM844D USB into a highly useful plug’n’play soundcard for your computer.

The USB sends an audio stream of the Main Left and Right

(record out) signal of your mixer to the computer. You can use almost any dedicated Digital Audio Workstation (DAW) software to record the signal from the AM mixer. You can also set the mixer as your default audio device.

The USB interface also returns the audio signal from your computer back to the 2T Returns, the signal of which is controlled by the 2T / USB Return control. If there are input signals from both the USB interface and the 2T Return, the two signals are combined and controlled simultaneously by the 2T return control.

Windows

1.Turn both the AM844D USB and the computer on.

2.Connect the AM mixer to the computer via the provided USB cable.

3.Let Windows find the device and install an appropriate driver.

4.Enter the Control Panel and select Sounds and Audio Devices.

5.When here, go to the Audio tab and select the “USB Audio Codec” as your default sound recording and playback device.

6.Depending whether you have Windows XP, Vista or 7, this may differ slightly but the setting can always be found within the Control Panel’s audio menu.

7.If you don’t want to use the AM844D USB as your default audio device, you can simply enter your DAW or other audio program and select it as your default device in the program only.

8.Be sure to set your minimum buffer settings to 64 samples as to avoid clicks and pops.

Mac

1.Turn both the AM844D USB and the computer on.

2.Connect the AM mixer to the computer via the provided USB cable.

3.Enter the AUDIO MIDI SETUP menu.

4.Select the “USB Audio Codec” as your input and output device.

5.The AM844D USB is now your default audio device.

6.Alternatively, enter your DAW software (or other relevant audio program) and select the “USB Audio Codec” in the device preferences.

7.Be sure to set your minimum buffer settings to 64 samples as to avoid clicks and pops.

MAKING CONNECTIONS

Channel Inputs

1. XLR Jacks
These jacks accept XLR inputs for balanced	1
signals. They can be used in conjunction	1
with microphones – such as professional
condenser, dynamic or ribbon microphones
– with standard XLR male connectors. With
low noise preamplifiers, these inputs serve	2
for crystal clear sound replication.

NB. When using an unbalanced microphone, please ensure phantom power is switched off. However, when using condenser microphones the phantom power should be activated.

2. Line In Jacks

These inputs accept 1/4” TRS and 1/4” TS line inputs for the addition of various music instruments – such as keyboards, drum machines, electric guitars, as well as a variety of other electric instruments.

3. Stereo Channel Inputs	3
The AM844D USB features 4 stereo input	3
channels (channels 9 through to 16), the
inputs of which differ slightly to the mono
channels. The 3-pin XLR inputs on the
first two stereo inputs are for the addition
of microphones with typical XLR male
inputs, where the Line 1/4” TRS jacks
can be used for various stereo line level
input devices, such as keyboards. If you
wish to use a mono device on a stereo

return input, simply plug the device’s 1/4” phone jack into the left

(mono) stereo input and leave the right input bare. The signal will be duplicated to the right due to the miracle of jack normalizing.

Master Section

4. 2T Return

The first of these inputs accommodates RCA cables from such devices as tape and CD players. These can accommodate CD players, MP3 players (such as the Apple iPod), as well as laptop computers. This may require a y-cord with 1/8” mini stereo jack on one end, and RCA connectors on the other.

5. Record Outputs

As with the Tape In ports, these outputs will accommodate RCA cables, able to be fed to a variety of recording devices.

4	5
6. Phones Outputs
These stereo output ports are suited
for use with headphones, allowing	7
monitoring of the mix. The audio level	7
of this output is controlled using the
Control Room/Phones control on the
front panel’s master section.

7. 12V Lamp

This BNC socket allows you to attach 6 a 12 Volt gooseneck lamp, allowing

better visibility in areas with poor light.

AM844D USB

Rear Panel

8. Direct Outs

These connections are for the direct output of the signals received by mono channels 1 through to 8, post-fader, post-EQ, post-HPF, post-mute. They are most commonly used to connect Multi-track recorders, allowing the AM844D USB to be used as an 8-track studio mixer.

9. Insert Jacks

The primary use for these TRS phone jacks is for the addition of external devices, such as dynamic processors or equalizers, to the corresponding mono input channel. This will require a Y cord that can send and receive signals of the mixer to and from an external processor.

10. Auxiliary (AUX) Sends

These 1/4” phone jacks are the final output of line-level signal fed from the corresponding auxiliary send mixes, and are best suited for use with stage monitors. Feeding the output from the

Auxiliary outs to an amplifier - and possibly an equalizer - and then to a floor monitor speaker allows artists to monitor their own instruments or vocals whilst performing.

11. Main Outputs

These outputs will output the final stereo line level signal sent from the main mix. The primary purpose of the two XLR jacks is to send the main output to external devices, which may include power amplifiers (and in-turn, a pair of speakers), other mixers, as well as a wide range of other possible signal processors

(equalizers, crossovers, etcetera). The two 1/4” phone jacks are able to send the Main output to external devices that may run in parallel with the mixer. This may include additional power amplifiers, mixers, PA systems, as well as a wide range of other possible signal processors.

12. Main Insert

Located on the rear of the AM844D USB, the primary use for these TRS phone jacks is for the addition of external devices, such as dynamic processors or equalizers, to the main L and main R signals. This will require a Y-cable that can send (prefader) and receive signals to and from an external processor.

13. Control Room Outputs	12	13	14
These two 1/4” phone jack outputs	12	13	14
These two 1/4” phone jack outputs
feed the signal altered by the
Control Room level control on the
face of the mixer. This output has
extensive use, as it can be used to
feed the signal from the mixer to an
active monitor, for the monitoring of
the audio signal from within a booth,
among many other possible uses.

14. Foot Switch Jack

These ports are for the inclusion of a foot switch, used to remotely change the built-in digital effect processor between on and off.

15. Group Outs

These 1/4” phone jacks output the final feed from the Group

1/5, 2/6, 3/7 and 4/8 Faders on the main panel of the mixer. These outputs can be used to feed multi-track records, as well as an amplifier and speakers to be used along with the Main

Speakers.

NB. When sending unbalanced signals from this output, a 1/4” TRS stereo plugs must be used and have the ring-pin disconnected, as to avoid damaging this mixer.

16. AUX Returns

The 1/4” TRS AUX Return inputs are for the return of audio to the AM844D USB mixer, processed by an external signal processor. If really needed, they can also be used as additional inputs. The feed from these inputs can be adjusted using the AUX Return controls on the face of the mixer. When connecting a monaural device to the AUX Return 1, 2 and 4 inputs, simply plug a 1/4” phone jack into the left (mono) input, and the signal will appear in the right as well. This, however, does not work for the AUX

Return 3.

NB. When any device is plugged into the mixer’s corresponding EFX Return inputs (AUX Return 3), the mixer’s internal digital effect engine is then disabled.

17. USB Port

This USB connector can be used to connect the AM844D USB to any modern Windows or Mac-based computer. Doing so will allow users to get a stereo signal both to and from the computer.

18. Power Connector and Fuse Holder

This port is for the addition of a power cable and supply, allowing power to be supplied to the mixer. Please use the power cable that is included with this mixer only. The fuse holder (located above the AC Power connector) is for the AM844D USB’s fuse. If the fuse happens to blow, open the holder cover, and replace the fuse with a suitable replacement (as indicated below the power connector).

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

AM844D USB

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

CONTROLS AND SETTINGS

you to select a center frequency between 100 Hz and 8 kHz.

Rear Panel

Changing middle frequencies of an audio feed can be rather

difficult when used in a professional audio mix, as it is usually

more desirable to cut middle frequency sounds rather than boost

19. Power Switch

them, soothing overly harsh vocal and instrument sounds in the

This switch is used to turn the mixer on

audio.

and off. Ensure you turn all level controls

The stereo channels of the AM844D USB mixer feature a High-

down before activating.

Mid and Low-Mid control instead of the typical controls described

20. Phantom Power Switch

above. They provide a peaking style of boost and cut to middle

frequencies, where the frequencies are set at 3 kHz and 800 Hz

When this switch is in the on position,

for the Highand Low-Mids respectively.

it activates +48V of phantom power for

all microphone inputs, allowing condenser microphones (well,

26. Low Frequency Control

the ones that don’t use batteries) to be used on these channels.

This control is used to give a

Activating Phantom Power will be accompanied by an illuminated

shelving boost or cut of ±15 dB to low

LED above the left channel Level Meter. Before turning Phantom

frequency (80 Hz) sounds. This will

Power on, turn all level controls to a minimum to avoid the

adjust the amount of bass included

possibility of a ghastly popping sound from the speakers.

in the audio of the channel, and bring

NB. Phantom Power should be used in conjunction with balanced

more warmth and punch to drums

microphones. When Phantom Power is engaged, single ended

and bass guitars.

(unbalanced) microphones and instruments should not be used on the

27. AUX Controls

Mic inputs. Phantom Power will not cause damage to most dynamic

microphones, however if unsure, the microphone’s user manual should

These four AUX controls alters the

be consulted.

signal level that is being sent to the

Channel Controls

aux 1 to 4 mixes, the signal of which

is suitable for connecting stage

21. Compressor Control and Indicator

monitors, allowing artists to listen to

This controls the onboard compressor

the music that is being played. AUX 1

function on mono channels. Turning

and 2 feature a Pre/Post button, which alternates the feed to the

this control up towards the 12 o’clock

AUX mix between a post and pre-fader feed. AUX 3, on the other

position will adjust the threshold and

hand, acts as an EFX send, the signal of which can be used

ratio of the compressor at varying

in conjunction with external signal processors (which can be

degrees.

Once you reach

the 12

returned to the mixer via the AUX return input), or simply as an

o’clock position, the control will then

Auxiliary output. Both the AUX 3 (EFX) and AUX 4 controls are

post fader and are sent directly to the corresponding outputs.

adjust the

compression

settings

along with an onboard expander (or,

28. Pan / Balance Controls

in other words, a compander). The

This alternates the degree or level of audio that the left and

LED that accompanies this control

right side of the main mix should receive. On mono channels,

will light up when the compressor is

the PAN control will adjust the level that the left and right should

triggered.

receive (pan), where as on a stereo channel, adjusting the BAL

22. Gain Control

control will attenuate the left or right audio signals accordingly

This controls the sensitivity of the

(balance).

input signal of the Line/Microphone

29. On Button and Indicator

input of mono channels, and the

This turns the channel on, allowing the

Microphone

input

only

stereo

input channels. The gain should be

user to use the feed from the channel’s

inputs to supply the MAIN L/R, GROUP

adjusted

a level

that

allows the

1/2, GROUP 3/4, AUX and EFX buses

maximum use of the audio, while still maintaining the quality of

(as

specified by the

user, of

course).

the feed. This can be accomplished by adjusting it to a level that

The

corresponding

indicator

will be

will allow the peak indicator occasionally illuminate.

illuminated when turned on.

23. Low Cult Filter (75 Hz)

30. 1-2, 3-4 and L-R Buttons

This button, located on channels 1 through to 12, will activate a

These handy buttons allow you to decide

high-pass filter that reduces all frequencies below 75 Hz at 18

the audio path of the corresponding

dB per Octave, helping to remove any unwanted ground noise

or stage rumble. On stereo channels 9-10 and 11-12, the low

channel. Pushing the “1/2”

or “3/4”

buttons allows the signal to be sent to

cut filter affects only the XLR Microphone inputs (and not the

the Group 1/2 or 3/4 mixes respectively,

line inputs).

where the “L-R” allows it to be sent to the

24. High Frequency Control

Main L/R mix.

This control is used to give a shelving boost or cut of ±15 dB to

31.

Peak Indicator

high frequency (12 kHz) sounds. This will adjust the amount of

This LED indicator will illuminate when the channel hits high

treble included in the audio of the channel, adding strength and

peaks, 6 dB before

overload

occurs. It is best

to adjust the

crispness to sounds such as guitars, cymbals, and synthesizers.

channel level control so as to allow the PEAK indicator to light

	25. Middle Frequency Control	up on regular intervals only. This will ensure a greater dynamic
		range of audio. This indicator also doubles as a Solo indicator,
	This control is used to provide a peaking style of boost and cut
		when the SOLO button is engaged.
	to the level of middle frequency sounds at a range of ±15 dB.

	The AM844D USB mixer also provides a sweep control, allowing

AM844D USB

32. Solo Button			Master Section
The Solo button is pushed to allow the
signal of the corresponding channel to			38. AUX Return 1 and 2 Controls
be sent to the Control Room / Phones		29	These controls adjust the signal level of audio fed through to the
mixing bus (pre or post fader, depending			stereo AUX Return inputs. The “To AUX Send 1” and “To AUX
on the properties selected by the pre /			Send 2” controls adjust the pre-fader level of the signal from the
post button, located by the Control Room			AUX Return controls to the corresponding AUX mixing buses for
/ Phones source buttons), for use with			effect-to-monitor sends.
either headphones or studio monitors.		30
This button also allows for easier		30	39. EFX Return Control
This button also allows for easier			39. EFX Return Control
isolation of individual channel signals,			This control adjusts the signal level of audio fed through to stereo
ensuring setting of the input gain or			AUX Return 3 inputs. If no device is plugged into the AUX Return
tracking of audio by sound engineers is		31	3 inputs, it then acts as the final level control of the built-in Digital
made simpler. The Peak indicator above		31	Effect Engine.
the Solo button also doubles as a Solo
Indicator, illuminating whenever the Solo			40. Main L/R - Group Buttons
function is activated.			40. Main L/R - Group Buttons
function is activated.			The first of these buttons changes the destination of the signal

33. Channel Level Control (Fader)	33	32	sent from the AUX Return 3 mix between the Main L/R and Group
33. Channel Level Control (Fader)			mix. The second button works when the user selects to send the
This control will alter the signal level that
is sent from the corresponding channel			signal “To Group”, allowing the signal to be sent to either Group
is sent from the corresponding channel			1-2 or Group 3-4.
to the corresponding mixing buses.			1-2 or Group 3-4.
to the corresponding mixing buses.

	Digital Effect Engine	41. AUX Return 4 Control
	Digital Effect Engine	This control adjusts the signal level of audio fed through to the
	34. Digital Effect Display	stereo AUX Return 4 inputs. The accompanying “C-R Phones
	34. Digital Effect Display	Only” button allows users to send the signal to the Control Room
	This 2-digital numeric display shows the program number that	/ Phones mixing bus for monitoring purposes.
	is currently applied to your EFX audio signal. When you rotate
	the Program control, you can scroll through different program	42. Solo Returns Button
	numbers; however the display will revert back to the original	42. Solo Returns Button
		Pushing this button allows you to SOLO the signal from all AUX
	program if a new program is not selected within a few seconds.
		Returns, sending the signals to the Control Room / Phones mix.
	For a list of available effects, please observe the Digital Effect
		When the Returns are soloed, the corresponding LED indicator
	Table.
	Table.	will illuminate.
		will illuminate.

35. Sig and Clip Indicators

Located within the Digital Effect Display are Clip and Sig LEDs.

The Sig LED will light up when any signal is received by the effect processor, and the Clip LED will light up shortly before excessive signals are dynamically clipped. If the Clip LED lights up too often, it may be advisable to turn down the AUX 3/EFX control on one or all input channels to ensure the signal level is not excessive.

36. Program Control

This control is used to scroll through the various effects. Turning the control clockwise will allow users to ascend into higher program numbers, and turning it counter-clockwise will allow users to descend into lower program numbers. Pushing this control will apply the new effect. When a tap-delay effect is selected, pressing this control will allow users to select the tapdelay time.

By pushing the button several times, the effect processor interprets the time between last two pushes and remembers this as the delay time – until the button is pushed again. This is kept even after the power is turned off. When the tap delay effect is selected, a small LED will flash within the digital effect display window at the selected intervals.

37. Effect On Button

This button is pushed to turn the corresponding effect panel on or off. When effects are bypassed, there will be 2 flashing LEDs in the effect display.

34 35 36

38	38
39
	40
	42
	41

43. AUX Send 1, 2 and 3/4 Master Controls

These controls adjust the final level of the AUX1, 2, 3 and 4 signals (as taken from the appropriate AUX level controls on channel strips) before being sent to the AUX sends. These mixes can be sent to the Control Room / Phones mix by pushing the corresponding SOLO buttons.

43 44

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

AM844D USB

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

44. AUX Send Solo Buttons

Push these buttons to send the signals from the corresponding AUX Sends mixes to the Control Room / Phones mix. The AUX

3 mix will be sent to the left of the Control Room / Phones stereo mix, while the AUX 4 will be sent to the right.

45. Solo Control

When one or more solo buttons are activated on any channel, this control adjusts the signals’ levels before sending the amplified signal to the Control Room / Phones mixing bus. This enables the user to be able to switch between monitoring the Main L-R (or other selected signals) and the solo signals without being overwhelmed by the difference in signal levels.

46. 2T / USB Return Controls

Turning the 2T Return level control adjusts the signal level of the feed from the 2T Return inputs, as well as the return signal from the computer through the USB interface. The “To Main L-R” button that accompanies this control allows users to send the 2T/

USB return signal to the Main stereo mix. When this is done, the return signal is not sent to the Record Out, as to avoid producing a feedback loop when recorded signals are fed back into the 2T return.

47. Control Room / Phones Controls

These two controls are used to adjust the audio level of the Control Room and Phones feeds, for use in the monitoring and tracking of audio. The Control Room control adjusts the final level sent to the C-R outputs on the rear of the AM844D USB mixer, whereas the Phones control adjusts the final signal sent to the

Phones A and B jacks on the top of the mixer’s face.

48. Control Room / Phones Source Selection

These four buttons allow users to select the various possible sources for the Control Room and Phones outputs. By simply pushing one of these buttons, users have the ability to monitor the Group 1-2, Group 3-4, Main L-R and 2T Return (by the Ctrl Rm / Phones only button) signals, either together or individually.

51. Level Meter

This dual 12 segment level meter gives an accurate indication of when audio levels of the Main L/R signal reach certain levels.

The 0 dB indicator illuminates is approximately equal to an output level of +4 dBu (balanced), and the PEAK indicator illuminates about 1.5 dB before the signal is dynamically clipped. To make the maximum use of audio, set the various level controls so that it sits steadily around 0 dB to make full use of audio, while still maintaining fantastic clarity.

When the Solo indicator, located beside the Level Meter, is illuminated, one or more Solo buttons has been pushed; therefore the Level meter will display properties of the Solo signal, which is helpful with setting of channel properties. If Solo indicator illuminates green, this means the Solo feed is a pre-fader signal.

If the solo indicator illuminates red, the feed is post-fader. If no

Solo buttons are activated, the Control Room / Phones selected sources (Main L-R, Group 1-2, Group 3-4 and/or 2T Return) signal properties are displayed by the Level Meter. In this case, the Level meter will display the sum of the selected signals.

52. Group 1/5, 2/6, 3/7 and 4/8 Controls

These four faders are the final level control for the Group 1 to

4 audio feeds (the signals of which are doubled in the 5 – 8

Group outputs), sent to the corresponding Group outputs on the rear of the AM844D USB to feed external devices such as effect processors, and, most commonly, multi-track recorders. These faders can be fed a signal from the various mono and stereo channels, as well as the AUX Return 3, depending on your selections. When pushed all the way up, these faders provide 10 dB of gain to the signal, and, when set all the way down, effectively mute the signal.

The Group Controls also feature individual left and right buttons, which allow you to send the various Group signals to the Main

Left and Right. This can be handy when wanting to combine the signals from different signals and control their input levels simultaneously, then send them to the Main L/R signal (eg. When multiple inputs are used for drums, you can combine these inputs together to be controlled much simpler by a single fader).

Priority	Signal
High	From Solo

Low	Selected Source(s)

49. +48V Indicator

This indicator will illuminate when Phantom Power is activated.

50. Power Indicator

The Power Indicator will light up when the power of the mixer is on; in case you weren’t too sure.

53. Main Fader

This fader is the final level control for the Main Left and Right audio feeds, sent to the Main L and R outputs. When pushed all the way up, the Main L/R fader provides 10 dB of gain to the signal, and when set all the way down, the signal is effectively muted. This will also adjust the final output level of the signal sent through the USB interface to the computer.

49 50

	46
48	51
	45

AM844D USB

SPECIFICATIONS

Inputs

Total Channels	12
Balanced Mono Mic / Line Channel	8
Balanced Mic / Stereo Line channel	2
Balanced Stereo Line Channel	2

AUX Return	4 stereo
2T Input	Mini stereo and stereo RCA
Outputs
Main L/R Stereo	2 x 1/4” TRS, Bal. & 2 x XLR
Group	8

Rec Out	Mini stereo and stereo RCA
CTRL RM L/R	2 x 1/4” TS
Phones	2
Channel Strips	12
EFX Send	4
Pan/Balance Control	Yes
Volume Controls	60mm fader
Inserts	8
Master Section
Phones Level Control	Yes
Main L/R Level Control	60 mm fader
Level Meter	13-segment
Phantom Power Supply	+48V DC
Frequency Response (Mic input to any output)
20Hz ~ 60KHz	+0/-1 dB
20Hz ~ 100KHz	+0/-3 dB
Crosstalk (1KHz @ 0dBu, 20Hz to 20KHz bandwidth, channel in to
main L/R outputs)
Channel fader down, other channels at unity	<-90 dB
Noise (20Hz~20KHz; measured at main output, Channels 1-4 unit
gain; EQ flat; all channels on main mix; channels 1/3 as far left as
possible, channels 2/4 as far right as possible. Reference=+6dBu)
Master @ unity, channel fader down	-86.5 dBu
Master @ unity, channel fader @ unity	-84 dBu
S/N ratio, ref to +4	>90 dB
Microphone Preamp E.I.N. (150 ohms terminated, max gain)	<-129.5 dBm
THD (Any output, 1KHz @ +14dBu, 20Hz to 20KHz, channel inputs)	<0.005%
CMRR (1 KHz @ -60dBu, Gain at maximum)	80dB
Maximum Level
Mic Preamp Input	+10dBu
All Other Input	+22dBu
Balanced Output	+28dBu
Impedance
Mic Preamp Input	2 K ohms
All Other Input (except insert)	10 K ohms
RCA 2T Output	1.1 K ohms
Equalization	3-band, +/-15dB
Low EQ	80Hz

<![if ! IE]>

<![endif]>Português Français Español Deutsch English

AM844D USB

<![if ! IE]>

<![endif]>Português Français Español Deutsch English




Mid EQ		100-8k Hz, sweepable
L-Mid EQ		800 Hz
H-Mid EQ		3 kHz
Hi EQ		12 kHz
Low Cut Filter		75 Hz (-18 dB/oct)

USB Audio		Stereo In/Out
Connector Type		USB Type B
Bitrate		16-bit
Sampling Rate		48 kHz
Digital Effect Processor		100 effects with tap delay control and test tones

Footswitch		EFX on/off
Power Requirements		100-240 VAC, 50/60 Hz
Weight		5.9 kg (13 lbs)
Dimensions (WxHxD)		418 x 149.5 x 420 mm (16.45” x 5.88” x 16.53”)

AM844D USB

support@phonic.com http://www.phonic.com

+ 28 hidden pages