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Specifications

For the more technical-minded, here are some detailed

specifications for the iMultiMix’s operating levels.

Input Channels

Mic In Sensitivity Range:

-60dBu to –10dBu nominal, +5dBu

maximum

Line In Sensitivity Range:

-40dBu to -+10dBu nominal,

+25dBu maximum

Mic/Line Gain Range:

+10 to +60dB

Equalization

High-Pass Filter:

75Hz, 18dB/octave

High Shelving:

12kHz, +/- 15dB

Mid Bandpass/Band Reject: 2.5 kHz, +/- 15dB

Low Shelving:

80Hz, +/- 15dB

Aux Sends

Aux Send A & B Gain Range: -

∞

to +10dB

Aux Returns

Aux Return A Gain Range:

∞

to +15dB

Effects Level/

Aux Return B Gain Range:

∞

to +15dB

Channel Levels

Channel Level Gain Range:

∞

to +10dB

Master Levels

Main Mix, Ctrl Room Gain

Range:

∞

to +10dB

1/4” Inputs

Stereo Aux Return Level:

+4dBu nominal, +20dBu maximum

RCA Inputs

Tape In Level:

-10dBV nominal, +5dBV maximum

1/4” Outputs

Main Mix, Ctrl Room,

Ext Aux Send Level:

+4dBu nominal, +20dBu maximum

Headphone Output:

75 ohm output impedance

>105mW into 75 ohms, >40mW

into 600ohms

RCA Outputs

Tape Out Level:

-10dBV nominal, +5dBV maximum

All measurements done over

a 22Hz – 22kHz range with a

1kHz sine wave at +18dBu

(-1dBFS) input. Impedances

are measured at 1kHz.

Содержание IMULTIMIX 8

Страница 1: ...Reference Manual ...

Страница 2: ...This page intentionally left blank 10 20 30 40 50 60 70 80 90 100 ...

Страница 3: ...Channels 1 4 9 Line Inputs Channels 5 8 10 PHONE Jack 10 AUX RETURNS 10 AUX SENDS 10 2 TRACK 10 MAIN MIX OUT 10 CTRL RM OUT 10 Channel Strips 11 Level Control 11 PAN or BAL 11 PEAK LED 11 Aux 11 EQ 12 Master Section 12 Main Mix 12 2TK iPod To Mix 12 2TK iPod To Ctrl Room 12 Mix To Ctrl Room 12 HDPH CTRL RM 13 AUX RETURN A LEVEL 13 EFFECTS AUX RET B LEVEL 13 LED Meters 13 POWER Indicator 13 48V Ind...

Страница 4: ...18 Chapter Four Applications 19 Simple Recording Setup 19 Recording to iPod 19 Simple Live Setup 20 Using Additional External Audio Sources 20 Using the Multimix USB with a Computer 20 Sending and Receiving Audio Data 21 Precautions when using the USB connection 21 Connection instructions for Windows XP 2000 ME and 98 Second Edition 21 Connection instructions for Macintosh OS X only 21 Chapter Fiv...

Страница 5: ... with all kinds of capabilities if no one explains how to use them So we try to write our manuals as carefully as we build our products The goal of this manual is to get you the information you need as quickly as possible with a minimum of hassle We hope we ve achieved that If not please drop us an email and give us your suggestions on how we could improve future editions of this manual We hope yo...

Страница 6: ...itar inputs on channels 1 2 these high impedance inputs are specifically designed for electric guitars and basses 2 stereo line inputs great for line level instruments Integrated iPod dock allows you to record your mix directly to your iPod iPod Limiter ensures that your iPod recordings are always clean crisp and never distorted Internal digital effects processor with 100 preset effects and an eas...

Страница 7: ...by the on board digital effects processor If you want to know what a certain effect will do to your sound before you select it this is where you should look Chapter 4 Applications outlines a number of scenarios in which you can use the iMultiMix 8 USB including some tips on what goes where when you re hooking everything up Chapter 5 Troubleshooting can give you a hand if you re experiencing proble...

Страница 8: ...oid that with this manual True enough you will find all the technical lingo and specifications you can handle in here but we do our best to make this accessible to you Beginners will find several elements of this manual especially useful Keep your eye out for the tips found in the gray boxes on the right side of the page Be sure to check out the hookup diagrams on page 7 which will give you some i...

Страница 9: ...sonal preference and on whether you re performing live or recording For example you ll see below that the MAIN MIX OUT can be routed to a recording device for recording or to a PA system for live performance Be sure to follow the guidelines for which cables to use further down this page and the procedure for setting levels on the next page before you begin mixing ...

Страница 10: ...g different audio sources with your iMultiMix you must set the level for each channel you re using This helps to prevent distortion and clipping The idea is to get the strongest signal possible without clipping Here s how 1 Turn the channel level control to the 12 00 position 2 Turn the AUX SEND and GAIN controls all the way down and turn the EQ knobs to the center detent you ll feel a click 3 Con...

Страница 11: ...te this switch all frequencies below 75Hz are cut from the signal This is useful for mic or line signals that don t have much bottom end such as vocals snares cymbals and electric guitar You ll want to leave this inactivated for instruments like basses and kick drums Line Inputs Channels 1 4 The line inputs marked LINE IN are balanced 1 4 jacks that offer the same 50dB of preamp gain and the high ...

Страница 12: ...on AUX SENDS And these are the 1 4 jacks where you connect the lines that are going into the input of an external effects processor The aux sends give you 10dB of gain that can be controlled in the AUX section of each channel input 2 TRACK The 2 TRACK IN and OUT jacks are standard RCA jacks You ll use the OUTs for mixing to a tape deck or other recorder With the INs you can bring in a signal which...

Страница 13: ...x bus The balance controls do it by controlling the relative balance of the left and right channel signals being sent to the left and right main mix buses PEAK LED This indicator lets you know when the channel s signal is clipping This light plays an important role in setting channel levels by helping you know when to reduce the channel s gain Aux Here you ll find knobs that control the levels of ...

Страница 14: ...our computer through the USB connection an external source through the 2 TRACK IN or an iPod attached to the dock get blended and routed to the MAIN MIX joining whichever other signals are already part of the main mix Used this way this channel effectively becomes another stereo channel but without all the extras like pan EQ etc 2TK iPod To Ctrl Room When you engage this switch the signals coming ...

Страница 15: ...is the level control for the signal returning to the mixer via AUX RETURN A EFFECTS AUX RET B LEVEL If you are using one of the iMultiMix 8 USB s internal effects this knob controls the effect level If AUX SEND B is connected to an external device this knob controls the level for AUX RETURN B LED Meters These are the two rows of yellow green and red lights you see in the master section of the mixe...

Страница 16: ... still possible to overdrive the Limiter circuit with too hot of a signal resulting in an unpleasant pumping sound or at the extreme distorted recording It is important that you avoid this by listening to the iPod Rec Monitor signal and adjusting the iPod RECORD LEVEL knob so the recording is loud yet still retains a good dynamic range iPod control buttons These buttons are used for your iPod s na...

Страница 17: ...this one on and your mixer has power Switch it off and it doesn t Make sure that all master output knobs are turned all the way down when powering your mixer up or down Phantom On This switch activates and deactivates the phantom power described in Mic Inputs Channels 1 4 page 9 This switch controls phantom power for all four mic inputs USB port This port allows you to connect the Multimix to a co...

Страница 18: ...2 A Tour of the iMultiMix USB 16 This page intentionally left blank ...

Страница 19: ... to activate the selected effect LED Display This display shows you the number of the current program CLIP Indicator When lit this LED tells you that there is a signal clip at the internal effects input This means that you should reduce the signal via the EFFECTS AUX RET B LEVEL control SIG Indicator When lit this LED indicates that the effects processor is receiving a signal Effect Descriptions H...

Страница 20: ...create a sweeping swooshing sound effect that you will probably recognize DELAY These effects are based on a discreet repetition or echo of the input PITCH These effects transpose the pitch of the input signal and blend the effect signal with the original to create harmonies MULTI MULTI 2 These are combinations of two or more of the above effects ...

Страница 21: ...ly plug headphones into the PHONES jack Recording to iPod The iMultiMix allows you to record your mix directly to an iPod This means that anything routed to your Main Mix such as instruments microphones and even audio from your computer can be recorded and played back instantly from your iPod Note that the iPod will record your Main Mix as a stereo file so it is important to get your levels right ...

Страница 22: ...is setting up for a live show The AUX RETURNS can be used as additional audio inputs when you are not using them for effects Using the Multimix USB with a Computer Your Alesis Multimix mixer comes with a Full Speed USB port which you can connect to a computer This USB connection allows you to send CD quality stereo 16 bit 44 1 kHz audio between the computer and your Multimix mixer This feature all...

Страница 23: ...nserting the USB cable into the computer When powering up both your computer and the Multimix turn on the Multimix first and the computer second When powering down your computer and the Multimix turn off the computer first Wait to turn off the Multimix until the computer has shut down Connection instructions for Windows XP 2000 ME and 98 Second Edition Upon first sensing the Multimix s USB input W...

Страница 24: ...4 Applications 22 This page intentionally left blank ...

Страница 25: ...s turned off or down Turn amplifier on or up Bad cable Check all cables substitute cables with known good ones Audio signal is distorted Channel level is too high Set channel levels using the procedure on page 8 Channel input is too high Turn down your instrument to a normal volume and then set channel levels using procedure on page 8 AUX RET level is too high Lower the level of AUX RET A or B in ...

Страница 26: ...he instrument by plugging headphones into the instrument s phone jack Gain is too low Adjust the channel s GAIN control Internal effects aren t working Effects level is too low Turn up the level using the EFFECTS AUX RET B LEVEL control in the master section of the mixer An effect hasn t been selected Press the EFFECTS knob on the desired effect and make sure the SIG indicator is lit I cannot reco...

Страница 27: ...le back in If this does not work leave the Multimix on turn off the computer do not use restart but instead actually turn off the computer and then turn it on again Computer sees the Multimix USB but no sound is received and or transmitted Multimix USB is not set as primary sound device In the computer s Control Panel go to the Sounds Multimedia area In the Audio section set the default sound reco...

Страница 28: ...5 Troubleshooting 26 This page intentionally left blank ...

Страница 29: ...Gain Range to 10dB Aux Returns Aux Return A Gain Range to 15dB Effects Level Aux Return B Gain Range to 15dB Channel Levels Channel Level Gain Range to 10dB Master Levels Main Mix Ctrl Room Gain Range to 10dB 1 4 Inputs Stereo Aux Return Level 4dBu nominal 20dBu maximum RCA Inputs Tape In Level 10dBV nominal 5dBV maximum 1 4 Outputs Main Mix Ctrl Room Ext Aux Send Level 4dBu nominal 20dBu maximum ...

Страница 30: ...6 Specifications 28 This page intentionally left blank ...

Страница 31: ...7 Block Diagram 29 ...

Страница 32: ...7 Block Diagram 30 This page intentionally left blank ...

Страница 33: ...file formats condenser microphone A type of high quality microphone that produces a weak signal usually requiring an external power source like the ones provided by your iMultiMix 8 USB s XLR mic inputs dB decibel A common unit of measure for audio detent A point of resistance in the path that a mixer knob or fader travels Detents are used to mark important settings As you turn the knob or slide t...

Страница 34: ... level of the signal being sent to the left channel as opposed to the right phantom power A way of providing power to condenser microphones Called phantom because the power isn t apparent to dynamic microphones when you connect them to an input that provides phantom power post fader Describes an aux send that sends a signal that already has passed through the channel fader pre fader Describes an a...

Страница 35: ...mpted repairbyunauthorized personnel and is limited to failures arising during normalusethatareduetodefects in materialorworkmanshipintheproduct THEABOVEWARRANTIES AREIN LIEUOF ANYOTHER WARRANTIES OR REPRESENTATIONSWHETHER EXPRESS OR IMPLIED OR OTHERWISE WITH RESPECT TO THE PRODUCT AND SPECIFICALLYEXCLUDEANYIMPLIED WARRANTIES OF FITNESS FOR A PARTICULARPURPOSE OR MERCHANTABILITYOROTHER IMPLIED WAR...

Страница 36: ...lesis com iMultiMix 8 USB Reference Manual Revision 1 0 by Edwin Erdmann Fred Morgenstern Stephan Vankov Copyright 2007 Alesis LLC All rights reserved Reproduction in whole or in part is prohibited iMultiMix 8 USB is a trademark of Alesis LLC Specifications subject to change without notice 7 51 0237 C 7 06 2007 7 51 0237 C ...

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