Need to disable Bass on Alesis SR18

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How can I permanently disable the base on my Alesis SR18?
I have no knowledge of nor do I want to use Midi. I use the machine as a stage drummer for my Duo.
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Patrick Foster

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Posted 3 years ago

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Didier St Victor

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I believe you can only mute the bass!

Hold down the [Bass] button and then while holding press [Mute]
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Didier St Victor

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Or, as found online (not from me): « How to permanently turn off BASS on an Alesis SR18! This lets you globally set the volume level for bass and percussion.

From the default / opening screen:

-> Press BASS
-> Press DRUM SET
-> Page Up/Down to get VOLUME
-> Press DEC (or rotate dial) until volume is zero
-> Press + Hold SAVE/COPY
-> Press REC (ENTER) to get SET SAVED

Done! The "random bass line in a random key" gremlin is gone! Same procedure works for percussion, too. It is not in the manual, and Alesis support seems unaware of it.»
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Corey S, Official Rep

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Thanks for sharing!
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Patrick Foster

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Thanks, I tried this but it seems to reinitialise itself when you turn it back on.
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Jim Lancaster

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This did not work. Changed to another drum pattern and the volume comes back on. Didn't even have to turn it off and back on.
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Easy Street Band Ohio

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It comes right back on as soon as you restart the machine
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ripley howe

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There is a way to do it! Do not despair! I posted the instructions on this forum somewhere, I'll see if I can track them down. It is a little tricky.
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Easy Street Band Ohio

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That would be nice.
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Easy Street Band Ohio

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Again how do we disable the bass permanently? It really is annoying. There are some features I like better than the SR 16 but this makes it more of a pain in the butt to use. Let me know if there's a way.
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Bill R., Employee

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In order to mute the bass, you will first need to save the pattern to a user bank. To do this:
1. Make sure you're in PATTERN MODE by pressing PATTERN/SONG. The display will say PATTERN at the top.

2. Press and hold the SAVE/COPY button. You'll notice the REC LED blink.

3. Select the user bank where you want your pattern to save. You can change the value by rotating the value dial, using the INC/DEC arrow buttons, or simply typing in the number of the user bank using the number keys.

4. While still holding the SAVE/COPY button, press the REC/ENTER button to confirm.The display will read SAVE DONE. Release both buttons to exit.

After this, you'll need to erase the instrument events from the user pattern that we just saved. To do this:

1. Again, confirm you're in PATTERN MODE, and make sure the playback is stopped.

2. Press PRESET/USER to navigate to the user bank. Your display will say USER.

3. Press and hold ERASE. The display will read PATTERN ERASE?

4. While holding down ERASE, press and hold the layer you'd like to erase (BASS, in this particular case) The display will read BASS ERASE?

5. While holding down BASS and ERASE, press REC (ENTER) to confirm. The display will read BASS ERASED.

After performing these steps, you should notice the bass will not play back with the drum pattern.

Note: The above steps can be performed to mute the drum or percussion sounds as well. To do this, simply press and hold the DRUM or PERC button in step 4 above.
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ripley howe

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HI, I'm back. There IS a way to permanently, globally disable the "random bass line in a random key" feature. Both my keyboard player and I have done it on separate machines. We just can't remember how we did it. But it was NOT in the steps described above by Bill R. The bass stays off, on all drum kits.

I think this is it, with some edits from above.
From the default / opening screen:

-> Press BASS
-> Press DRUM SET (Display should say ChRattle / BAS000 and USER)
-> Page up once for Page 2, VOLUME
-> Rotate dial counter-clockwise until volume is down to 00
-> Press + Hold SAVE/COPY
-> Press REC (ENTER) to get SET SAVED

Works for me, but as always, YMMV. Good luck!
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Peter Miller

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Hide Alesis Bass by assigning MIDI CHANNEL 16 to the Bass !
Who ever uses CH 16 ?
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Jim Lancaster

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This only worked temporarily. As soon as I switched patterns, the bass volume was back up.
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Jim Lancaster

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Would someone from Alesis please step in and answer this question definitively? Can we disable the bass at the system level and save it so that we don't have to bother with turning it off every time we change patterns or reboot the device? If so, how? If not, why not?
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ripley howe

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OK,this works for me, the bass stays off on all patterns, drum sets, reboots, etc. It has stayed off for years. But as always, YMMV. So, to turn off the bass:

Turn on the SR18. From the default / opening screen:

-> Press BASS
-> Press DRUM SET
-> Rotate the dial to the left to get ChRattle (or ChorHarm) / BAS000
-> Press + Hold SAVE/COPY to get SAVE SET / 00
-> Press REC (ENTER) to get SET SAVED
-> Turn off SR18, then back on again (this step may not be necessary).

Likewise, to turn off Percussion:

Turn on the SR18. From the default / opening screen:

-> Press PERC
-> Press DRUM SET
-> Rotate the dial to the left to get Ambient / DRM000
-> Press + Hold SAVE/COPY to get SAVE SET / 00
-> Press REC (ENTER) to get SET SAVED
-> Turn off SR18, then back on again (this step may not be necessary).

Please let me know if this works!? Thanks -