Alesis MultiMix 12 FireWire, 16 FireWire, 12, 16 User Manual

Size:
3.29 Mb
Download

Troubleshooting: non-Firewire6

External effects aren’t working.

LED meters not working.

Computer does not see the MultiMix.

Computer sees the MultiMix FireWire, but no sound is received and/or transmitted.

Firewire audio has crackling or glitches, or audio plays/records at incorrect pitch.

No power.

Effects processor is not plugged in or turned on.

Aux outputs of mixer aren’t connected to inputs of processor or processor’s outputs aren’t connected to mixer’s inputs (or aux return).

Mixer’s effects return signal is too low.

Make sure unit is plugged in and turned on.

Make sure the mixer’s aux outputs are connected to the processor’s inputs and that the processor’s outputs are connected to the mixer’s aux inputs.

Turn up the output of the effects processor or turn up the mixer’s AUX RET A RETURN or EFFECTS / AUX RET B RETURN in the master section.

Nothing is routed to the HDPH/CTRL RM output.

FIREWIRE connection must be established.

Press the desired MIX, ALT ¾ or 2 TK button.

Unplug the FIREWIRE cable and turn off the MultiMix. Turn the MultiMix back on and plug the cable 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.

MultiMix FireWire is not set

In the computer’s Control Panel,

as primary sound device.

go to the Sounds/Multimedia

 

area. In the Audio section, set

 

the default sound recording and

 

playback devices to MultiMix

 

FireWire.

Computer configuration may be incompatible with Firewire audio.

Certain Firewire chipsets have design limitations or IRQ assignment restrictions that must be resolved before audio can work correctly on them. See your Firewire chipset documentation for further information if required.

Incorrect or defective power

Replace with correct power

supply.

supply (only use Alesis-

 

recommended AC output power

 

supply).

49

6 Troubleshooting:non-Firewire

This page intentionally left blank.

50

7 Troubleshooting: Firewire

Computer or audio application does not see the MultiMix FireWire

Basic troubleshooting

First, check that the MultiMix is seen by the computer: Under “Sounds and Audio Devices” (Windows) or “Audio MIDI Setup” (Mac), look for the MultiMix FireWire to be listed as an available device.

If the MultiMix FireWire is not seen, check that the Firewire cable is properly connected. Power the MultiMix FireWire off, wait a few seconds, and then power it on again. Repeat this process until the MultiMix FireWire is found.

For instructions for checking on this basic connectivity, see page 28 (Windows) or page 36 (Macintosh).

Advanced troubleshooting under Windows

The best way to see that your MultiMix is connected and operating properly is through the Windows Device Manager. This is a powerful Windows component that requires some navigation but yields very detailed information.

1.Start by finding the “My Computer” icon either on your desktop or from the Start menu.

2.Right-clickthe “My Computer” icon and select “Properties.”

51

7 Troubleshooting: Firewire

3.The active tab at the top of this window is now the “General” tab. Click the “Hardware” tab. Then, click the “Device Manager” button.

4.Finally, expand the “Sound, video and game controllers” section. “MultiMix Audio” should appear.

52

Troubleshooting: Firewire 7

No connection

If “MultiMix Audio” does not appear, Windows does not see the mixer as being connected to the computer. Check your Firewire cable and try powering the mixer off and on again.

Expand the “IEEE 1394 Bus host controllers” section. Check that your Firewire card is listed as properly working.

As a last resort power your computer off and on.

Faulty connection

If “MultiMix Audio” appears, but there is a yellow question mark or exclamation point attached to it, the drivers are improperly installed. Right-clickon the MultiMix Audio listing, choose “Uninstall…”, and uninstall the device. The next time you connect the MultiMix to your computer, you will need tore-installthe drivers from scratch.

When restarting your computer, turn it off all the way. Pull out the AC power cord, keep it out for a few seconds, and then plug it back in again before you restart your computer.

This step helps reset your computer’s PCI cards, including any Firewire cards.

Audio playback or recording is at the wrong speed

Adjust the buffers in the ASIO control panel or through your WDM application’s audio setup options.

It is impossible to say which buffer settings are perfect for each system, but generally buffer sizes around the middle or low-middleof the available range provide the best results.

Audio playback or recording stutters or drops out

Again, work with the buffer settings in the ASIO control panel or through your WDM application’s audio setup options in order to find the most reliable setting.

Many audio applications include advanced setting dialog boxes where pre-fetchand other parameters can be set. Explore those options.

Audio echoes during recording

Either turn your software direct monitoring off or—ifyou want to monitor your incoming audio through yoursoftware—puttheMIX TO CTRL RM button in the UP position.

Be sure to attach your monitoring speakers to the CTRL RM OUT jacks, not the MAIN MIX OUT jacks.

Help on the web

Most major recording programs are supported by lively user forums. The odds are that, if you’re having problems, someone who posts at these forums has already experienced them and found solutions.

Don’t be shy about visiting these forums and posting your questions.

53

7 Troubleshooting: Firewire

This page intentionally left blank.

54

8 Specifications

For the more technical-minded,here are some detailed specifications for the MultiMix’s operating levels.

Input Channels

-60dButo–10dBunominal, +5dBu

Mic In Sensitivity Range:

Line In Sensitivity Range:

maximum

-40dButo-+10dBunominal,

Mic/Line Gain Range:

+25dBu maximum

+10 to +60dB

Equalization

75Hz, 18dB/octave

High-PassFilter:

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

- to +15dB

Aux Return A Gain Range:

Effects Level/

- to +15dB

Aux Return B Gain Range:

Channel Levels

- to +10dB

Channel Level Gain Range:

Master Levels

 

Main Mix, Ctrl Room Gain

- to +10dB

Range:

1/4” Inputs

+4dBu nominal, +20dBu maximum

Stereo Aux Return Level:

RCA Inputs

-10dBVnominal, +5dBV maximum

2-TRACKIN Level:

1/4” Outputs

 

Main Mix, Ctrl Room,

 

Aux 3/4, Ext Aux

+4dBu nominal, +20dBu maximum

Send Level:

Headphone Output:

75 ohm output impedance

 

>105mW into 75 ohms, >40mW

 

into 600ohms

RCA Outputs

-10dBVnominal, +5dBV maximum

2-TRACKOUT Level:

S/PDIF and Firewire digital outputs

Bit depth:

24 bit

Sample rate:

44.1kHz, 48kHz (switchable in

 

software)

All measurements done over a 22Hz – 22kHz range with a 1kHz sine wave at +18dBu (-1dBFS)input. Impedances are measured at 1kHz.

55

8 Specifications

Mechanicals

(W x L x H)

MultiMix 12 FireWire:

13.0” x 13.4” x 3.2” /

 

331mm x 340mm x 80mm,

 

7.0lbs / 3.2kg

MultiMix 16 FireWire:

13.0” x 15.2” x 3.2” /

 

331mm x 386mm x 80mm,

 

9.7lbs / 4.4kg

56

9 Block Diagrams

57

9 Block Diagrams

58