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USER MANUAL Monitor One Active ALESIS
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Black and silver ALESIS M1Active USB audio speaker with visible sound grille and control buttons (no text beyond branding)
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Black and silver ALESIS M1Active USB audio speaker with visible sound waves (no text or symbols on body)QUICKSTART OWNER'S MANUAL
(ENGLISH) 1 - 8
Make sure that the following items can be located in the box:
■ M1Active 320 USB Speakers
■ Power Cable
■ USB Cable
■ 1/8" Cable
■ Quickstart Manual
■ Safety & Warranty Information
READ THE SAFETY & WARRANTY INFORMATION BEFORE USING THIS PRODUCT!
INTRODUCTION
Thanks for choosing the Alesis M1Active 320 USB desktop monitors – the perfect audio monitoring solution for desktop based audio systems.
Our M1Active line of speakers were engineered from the ground up to be the perfect studio monitor. The biamplified design, active crossover, and carefully matched woofer/tweeter combination ensures perfectly accurate and uncolored playback of your music. These speakers are like a “sound microscope” that will allow you to hear every nuance of your mix and help you make better mixes.
In addition to their superior speaker design, the M1Active 320 USB monitors feature a USB1.1 2in/2out computer audio interface. Simply plug the speakers into your computer and you are ready to go. Play audio from your computer or record into your computer from external sound devices connected to the inputs on the rear of the speakers – no additional audio devices necessary!
We've made this quick start guide as short as possible, but please read it carefully in order to get the most out of your monitors.
We hope your new M1Active 320 USB monitors will serve you well for many years.
Sincerely,
The People of Alesis
HOOKUP DIAGRAM
Refer to the possible connection scenario for hooking up the M1 Active 320 USB speakers.

flowchart
graph TD
A["LAPTOP"] --> B["USB"]
B --> C["CD PLAYER OR OTHER DEVICE"]
C --> D["POWER SOURCE"]
D --> E["TURNTABLE OR OTHER DEVICE"]
E --> F["KEYBOARD OR SOUND MODULE"]
F --> G["UPP"]
style A fill:#f9f,stroke:#333
style B fill:#ccf,stroke:#333
style C fill:#cfc,stroke:#333
style D fill:#fcc,stroke:#333
style E fill:#cff,stroke:#333
style F fill:#ffc,stroke:#333
style G fill:#fcc,stroke:#333
FRONT PANEL OVERVIEW

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ALESIS M1Active 320USB 1 2 100 FANERRIGHT SPEAKER
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VOL/POWER – This knob is used to turn the speakers on and adjust their volume. To turn on, simply turn up the knob; you will feel a click when the speakers turn on. A blue LED light on the left side of the speaker will illuminate. To turn off, simply turn the volume all the way down; the blue LED will turn off to let you know that the speakers are off.
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HEADPHONES – Connect your 1/8" headphones to this output to hear the mix through your headphones. Note that while the headphones are connected, you will not be able to hear sound out of your speakers until the headphones are disconnected.
REAR PANEL OVERVIEW

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RIGHT SPEAKER OUTPUT TO LEFT SPEAKER 3 2 AC VOLTAGE SELECT POWER 1 USB 4 5 1/8" STEREO BASS BOOST ON OFF L R 6 L R 7 INPUT
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LEFT SPEAKER INPUT FROM RIGHT SPEAKER 3-
POWER – Use the included power cable to connect the speakers to a live power source. Make sure your AC Voltage Selector (see item #2 below) is set to the correct voltage for your country.
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AC VOLTAGE SELECTOR – This 2-position switch sets the AC input voltage for the speaker. US users should set this switch to “100-120V” whereas UK and most European users will need to set this to “220-240V.
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OUTPUT TO LEFT SPEAKER – This is the audio connection to the left speaker. Use the included 1/8" cable to connect the right speaker to the left speaker.
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USB (1.1) – Use the supplied USB cable to connect the speaker system to your computer. Note that the M1Active 320 USB speakers are Plug-and-Play so there is no additional driver installation necessary; the speakers should be ready to use as soon as they are plugged in.
If you experience problems when connecting the speakers through a USB hub, we recommend connecting the speakers directly to your computer.
- 1/8" STEREO INPUT – Use a 1/8" stereo cable (not included) to connect external sound sources to this input.
All three input options are mixed together as a stereo pair when recording your external sources into your computer.
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1/4" TS INPUTS - Use 1/4" TS cables (not included) to connect external sound sources to these inputs.
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RCA INPUTS – Use a stereo RCA cable (not included) to connect external sound sources to these inputs.
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BASS BOOST – This 2-position switch allows you to boost the speakers' bass frequencies.
SPEAKER PLACEMENT
The placement of your speakers has a huge impact on how well they will perform in your studio.
Although nearfield studio monitors are designed to be more forgiving when it comes to placement, you should do your best to make sure they form an equilateral triangle relative to your head. In other words, make sure that each speaker is equally distant from both your head as well as the other speaker. Once each speaker has been placed, rotate the speakers slightly so that the drivers are pointing toward the engineer.
Take a look at the diagram on the right. Notice that the distance from the engineer's head to each speaker is the same as the distance between the left and right speakers. Also note that the speakers are turned slightly so that the drivers are facing the engineer.
This is an ideal setup but if it is not practical (or possible) to do this, try to match this setup as closely as possible.

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LEFT SPEAKER RIGHT SPEAKER LISTENER The speakers and listener should be at the three corners of a triangle having equal length sides.SPEAKER HEIGHT
The ideal height for M1Active 320 USB speakers is so that the speaker is parallel to the ground and that the midpoint of the woofer and tweeter is at ear-height.
The diagram below demonstrates the ideal placement height of the speakers relative to the engineer. Notice that the engineer's ears are directly between the woofer and tweeter.
WOOFER/TWEETER MIDPOINT

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Audio Mutter mutter Audio Mutter mutterIf possible, use speaker stands and move the monitors off of your desk (or meter bridge, if you are using a mixer). This usually results in better imaging since the monitor is decoupled from your desk and there is less chance reflected sound from the desk (or mixer) reaching your ears and smearing the imaging of your studio monitors.
The M1Active 320 USB speakers are plug-and-play under Windows XP/Vista so there is no special driver installation necessary. Simply power on the speakers, connect them to your computer's USB port and all the necessary drivers will be automatically installed.

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Found New Hardware USB Audio CODECWhen you first plug the speakers into your computer, you will see a few messages similar to the one shown on the left. Allow the process to complete.

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Found New Hardware Your new hardware is installed and ready to use.Once the process has completed, you will see the message displayed on the left. Your speakers are now ready to use.

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Sounds and Audio Devices Properties Volume Sound Audio Voice Hardware Sound playback Default device USB Audio CODEC Volume... Advanced... Sound recording Default device USB Audio CODEC Volume... Advanced... MIDI audio playback Default device Microsoft GS Wavelength SW Synth Volume... About... Use only default devices OK Cancel ApplyYou may choose to use the M1Active 320 USB speakers as the default audio output for your computer. To access your computer's default audio preferences, go to Start ▶ Control Panel ▶ Sounds and Audio Devices and click on the Audio tab.
You will see the screen displayed on the right.
To select the speakers as the default playback device, choose USB Audio CODEC under Sound Playback.
To select the speakers as the default recording device, choose USB Audio CODEC under Sound Recording.
Tip: While in Sounds and Audio Devices, we recommend turning off Windows system sounds so they do not interfere with your audio while in the middle of a session. You can do this by clicking on the Sounds tab and selecting No Sounds under the Sound Scheme pull-down menu.
ABOUT LATENCY & THIRD-PARTY ASIO DRIVERS
“Latency” is the delay between the moment when audio is generated and the moment when you actually hear it. Higher latency means a longer delay.
The M1Active 320 USB speakers feature zero latency direct monitoring so you don't have to worry about latency when monitoring input sources connected to the rear of the speakers. However, latency may become an issue when using software synths and instruments.
Generally, you want to keep latency as low as possible while still allowing your equipment to operate without glitches. Latency and buffering is usually adjusted in your software's Preferences settings.
If you still experience too much latency or “lag” when using software synths and instruments, you might want to download one of the free and widely available ASIO (Audio Stream Input/Output) drivers from the Internet. In general, ASIO drivers may perform better and with lower latency since they create a more efficient communication between audio devices and software. You may download and install the free ASIO4ALL driver (PC) by visiting www.asio4all.com.
CONFIGURATION UNDER MAC OSX
The M1Active 320 USB speakers are plug-and-play under Mac OSX so there is no special driver installation necessary. Simply power on the speakers, connect them to your computer's USB port and the speakers should be ready to use immediately.

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Audio MIDI Setup Audio Devices Mali Devices System Settings Default Input: USB Audio CODEC Default Output: USB Audio CODEC System Output: USB Audio CODEC Properties For: USB Audio CODEC Clock Source: Default Configure Speakers Audio Input Master Stream Source: Default Format: 44100.0 Hz 2ch-16bit Audio Output Master Stream Source: Default Format: 44100.0 Hz 2ch-16bit Ch Volume Slider Value dB Mute Thru M n/a n/s □ 1 n/a n/s □ 2 n/a n/s □ Ch Volume Slider Value dB Mute M n/a n/c □ 1 1.00 0.00 2 1.00 0.00You may choose to use the M1Active 320 USB speakers as the default audio output for your computer. To access your computer's default audio preferences, go to Applications ▶ Utilities and double-click Audio MIDI Setup.
Under the Audio Devices tab, select USB Audio CODEC as the default system input and output.
CONFIGURING YOUR DAW
Below are some tips on configuring your DAW to work with the speakers.
PLAYBACK
You may need to make sure that the speakers are enabled as an audio output device in your DAW, if you have not set them to be the default system audio output. This is usually done in the application's Preferences dialog.
RECORDING
As you may have noticed, there are several inputs on the rear panel of the left speaker. These inputs allow you to record external sound sources directly into your computer. Note that the three sets of inputs are summed together before entering your computer as a stereo track. Therefore, it's important to ensure that the volume of the input signal does not clip when using multiple external devices simultaneously.
To record from the inputs, make sure that the speakers are enabled as an audio input device in your DAW. This is usually done in the application's Preferences dialog.
IMPORTANT: Make sure that software monitoring is turned off when recording from external sound sources. Otherwise, you may get feedback and distortion. To turn off monitoring on the recording channel, you can simply mute the channel in your software.
TROUBLESHOOTING
Please refer to the following list of common troubleshooting scenarios if you run into problems.
| PROBLEM CAUSE SOLUTION | ||
| Speakers do not work. | Speakers not plugged in. Make | sure that the speakers are connected to a live power source. |
| Speakers not turned on. Make sure | sure that the speakers are turned on. The blue LED will be illuminated while the speakers are on. | |
| Speakers not connected to computer. | Make sure that the speakers are connected to a functioning USB port on your computer. | |
| Problem is caused by use of a hub. | We strongly recommend that you avoid using USB hubs and connect the speakers directly to your computer. | |
| Headphones are plugged in. Remember that while the headphones are plugged in, the speakers will not output audio. Disconnect the headphones if you would like to listen through the speakers. | ||
| Volume is all the way at minimum.. | Turn up the volume knob on the front to a suitable level. | |
| I am only hearing audio from the left speaker. | Right speaker not connected. Make sure that the right speaker is connected to the left speaker with the included 1/8" cable. | |
| I am experiencing distortion when recording from external sources. | Gain levels of your input sources are too hot. | Turn down the audio level of your input sources. This is extremely important when using multiple sources, as the inputs on the rear panel of the speakers will be summed together before entering your computer. |
| Software monitoring has not been tuned off and is causing a feedback loop. | Make sure that your software monitoring is turned off when recording from external sources to avoid feedback and distortion. | |
| I am experiencing a lot of latency or "lag". | Buffer size in your software is set too high. | Set the buffer size to a lower value. This is usually done in your software's Audio settings or perferences. |
| The class-compliant audio drivers are insufficient. | Download the free ASIO4ALL driver from www.asio4all.com. It may help achieve better results under extremely low latency settings. | |
| I am experiencing audio dropouts and glitches. | Buffer size in your software is set too low. | Exteremely low buffer sizes can result in your computer working harder than it can, causing unwanted dropouts and glitches. Select a higher bugger size in your software to avoid this. |
| My software DAW is not "seeing" the speakers. | Speakers were connected after the software was started. | Some configurations require that audio and MIDI devices are connected prior to starting any software applications with which you may wish to use the devices. Try restarting the application with the speakers plugged in and powered on. |
TECHNICAL SPECIFICATIONS
Woofer: 3" lightweight, magnetically-shielded,
polypropylene cone with rubber surround and high power handling voice coil. 4 Ohm impedance.
Tweeter: 1" silk dome
Frequency Response: 80 Hz – 20 kHz
Bass Boost: 4.8dB at 100Hz
Power: 10 W per channel RMS
Signal-to-Noise Ratio: 88dB weighted
Inputs: 1/4" TS, RCA, 1/8" Stereo, USB1.1
Input Impedance: 20k ohms
DAC/ADC 16 bit delta sigma, 44.1kHz or 48kHz sampling rate
Dimensions (W x H x D): 6.0" x 5.0" x 7.5" / 15.3 cm x 12.7 cm x 19.0 cm
Net Weight (total): 7.5 lbs / 3.4 kg