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CS70



Joined: 26/11/12
Posts: 402
Loc: Oslo, Norway
Alesis Multimix 2.0 USB and gain levels
      #1067540 - 24/09/13 08:05 PM
Hei! I'm going to use the Alesis mixer/digital interface to experiment with recording some multimiked drums. In the manual - when it talks about what essentially is gain staging for recording - it states clearly to "adjust the gain knob until the LED meter remains at or very close to 0" (page 12, point 7 - the PDF manual is online here). I don't have the mixer yet in my hands, but I find it strange to record so hot with what is essentially a digital interface. Normally when I record on the PC I set preamp gain levels so that I get a -18dBFS average and peak at -12 or -10 in the DAW and the results so far have been remarkably good. The Alesis' preamps have apparently 50dB of gain, which is not crazily much but should work fine with modern condenser mics. So I'm a bit puzzled.

As anyone used the mixer? (and yeah, there's certainly better equipment and preamps but I want to have individual mic tracks to the DAW, the Alesis passed the SOS review and this is my experimenting budget , so it'll have to do.. )

Surely there's something I'm not getting..

Cheers,

-Cris

--------------------
http://www.silver-spoon.org - It's just music
..and the FB page


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hollowsun



Joined: 20/01/05
Posts: 5582
Loc: Cowbridge, South Wales
Re: Alesis Multimix 2.0 USB and gain levels new [Re: CS70]
      #1067545 - 24/09/13 08:53 PM
I have one and it's very good (for the money). It's not a Trident or Neve or SSL, whatever, but serves a purpose (I use mine as a monitor mixer, much like those stupidly and horribly overpriced 'summing mixers' . . . they are just mixers FFS!). But anyway...

It's an analogue mixer and you can run the inputs hotter than you might on a digital thing or audio I/O, whatever. In fact, to obtain maximum signal-to-noise, it's a good idea to run as hot as possible. There may be some distortion but analogue distortion is more graceful than digital - might actually add some 'character' ... and if there IS some distortion on the analogue side of the system, back things off a tad with the input GAIN controls. And for getting it into you 'puter over USB, if it's a bit hot, back off the master output on the MultiMix.

Damned handy little mixer for a silly price and not a bad spec. And the pre-amps are actually very good (I did work for Alesis some years ago and knew the designer).

--------------------
Website / Music Lab Machines / Blog


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CS70



Joined: 26/11/12
Posts: 402
Loc: Oslo, Norway
Re: Alesis Multimix 2.0 USB and gain levels new [Re: hollowsun]
      #1067580 - 25/09/13 08:13 AM
Sounds good and all clear. Just got it in my hands, looking forward to a test run this afternoon.

Thanks Hollowsun!

--------------------
http://www.silver-spoon.org - It's just music
..and the FB page


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James PerrettModerator



Joined: 10/09/01
Posts: 10658
Loc: The wilds of Hampshire
Re: Alesis Multimix 2.0 USB and gain levels new [Re: CS70]
      #1067584 - 25/09/13 08:53 AM
When you use dB you always need to specify a reference level. If you add the FS after the dB then you know that 0dB is full scale and signals can't go any higher. The mixer's 0dB level is different - that's the standard working level for the mixer and it should have quite a few dB of headroom above that. You'll have to read the manual in depth to work out how the mixer's reference level translates to external levels.

--------------------
JRP Music - Audio Mastering and Restoration.
http://www.jrpmusic.net


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