Question about Alesis Sr 16 Stereo Drum Machine

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Alesis SR-16 distorted sounds

I got this machine off ebay.Looks great sounds bad.All the drum tones sound distorted and scratchy.followed the manual instructions on turning down the volume on the individual drums that didn't help.The volume control knob has a lot of background static and some other sites mentioned problems with the volume control.I have a yamaha drum machine and it works fine using the same connections.Thanks in advance for your suggestions.

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  • kada80 Nov 23, 2008

    My SR16 has the same problem,distorted sounds at a low volume and scratchy sounding volume knob.Have replaced the volume pot to no avail,could be a faulty chip on the circuit.



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The distorted and low volume output plus noise is usually caused by using the wrong power supply adapter. The Alesis SR-16 takes a 9V "A/C" supply not "DC". The A/C supply provides a negative voltage swing which wouldn't exist with a DC supply. So check and make sure you have 9V A/C output supply not DC.

Posted on Apr 04, 2012

  • David Martinez Guillen Nov 25, 2013

    Thanks for the info, I have the same problem and I was using an 9V DC converter, with the 9V AC adapter it works perfectly.


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I've heard from other users the same complaint. This problem would have to be caused by one of the op-amp chips on the output side. Probably not worth the trouble, you'd have to put a scope on it to nail it down. Before you give up on it, get a magnifying glass and look for bad solder, cracks or breaks in the foil. Good luck.

Posted on Dec 05, 2008


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Here is a link:

Apr 10, 2011 | Alesis Sr 16 Stereo Drum Machine

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Scratchy volume potentiometer

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Aug 11, 2010 | Alesis Sr 16 Stereo Drum Machine

1 Answer

Drum sound distorted

Try a factory reset:

alesissr16logo53x41.jpgrmidialesissr16logo53x41.gif Performing a 'Reset' on your Sr16 will will 'clear' it's memory and re-initialize all of it's parameters to the original factory settings. This implies that:
  • All of your User Patterns will be erased.
  • All Songs will be erased.
  • All drum assignments you have made will be erased.

  • None of the above actions should be an issue to you as:
  • It is assumed that at some point you have Download And Save A Copy Of The Sr16's Current State.
  • It is assumed that at some point you have Export any 'User' Patterns you may have programed into your Sr16 and imported them into your _rMidi installation.
  • It is assumed that at some point you have Export any 'User' Kits you may have programed into your Sr16 and imported them into your _rMidi installation.

  • Perform The Reset
    To perform a 'Reset' on your Sr16:
  • Turn the pwer off and wait a few seconds.
  • Press and hold the PLAY and ERASE buttons while turning in the power.
  • Continue holding down these buttons for at least three seconds after turning on the power.

  • If this doesn't fix it, check power adapter. If that is OK then service is required

    Jun 06, 2010 | Alesis Sr 16 Stereo Drum Machine

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    Sound output is heavily distorted.

    Check following things:

    1. The master volume control on the SR16 is at least half way up. Turn down the amp as needed. Running very low output of the SR16 and high amp gain is sure to get distortion.

    2. Check power adapter is the original and is producing correct voltage.

    3. Check that audio cable is high quality instrument cable and not consumer or speaker cable.

    May 05, 2010 | Alesis Sr 16 Stereo Drum Machine

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